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A New Time-Travel App, Reviewed

We all know by now that the time-reversal invariance governing statistical mechanics at the microlevel maps by a simple equation onto the macroworld, making “time travel” a wholly unsurprising possibility … but damn! The first time you go back there’s just nothing like it.

I know all these first-person accounts of ChronoSwooping have become a cliché here on Substack, where, let’s face it, anyone can write pretty much whatever they want no matter how self-indulgent and derivative. Nonetheless I think I have some unusual insights to share, which derive from my own experience but which may offer some general lessons as to the nature and significance of time travel, both the original and long-prohibited “body-transit” method as well as the newer and more streamlined ChronoSwoop.

This is not only because I spent some years in the archives of the Stadzbybliotiēka of the Margravate of East K****, poring over the notebooks in which Quast first landed on the Quast equation, while in parallel jotting down sundry philosophical reflexions about the nature of Divine Tempus—as he called it—that have largely been neglected by other researchers. It is also because I have used the ChronoSwoop app in ways that are expressly prohibited by its makers, and indeed by the federal government. In light of this, while I am writing this product review for Substack and in the emerging “Substack style,” until the law changes or I depart permanently from the chronological present, I will be posting this piece only on the Hinternet-based Substack oglinda (Romanian for “looking-glass,” a hacking neologism supposedly coined by Guccifer 3.0), which I’m told is undetectable, remaining entirely unknown even to the original company’s founders. Fingers crossed.

Perhaps some readers on this oglinda will appreciate a brief summary of what’s been happening in the world of time travel since Quast first came up with his equation in 1962. I don’t know what sort of information has been circulating down here, and I don’t want anyone to feel left behind.

The early 1960s witnessed great leaps forward not just in time-travel technology, but in the technology of teletransportation as well—which is to say dematerialization of the body, and its rematerialization elsewhere, but without any measurable “metachrony.” By late 1966 poorly regulated teletransporters had begun to pop up on the state fair circuit, tempting daredevils into ever more foolish stunts. But this practice was curtailed already the following year, when, expecting to reappear kneeling before his sweetheart Deb at the stables with a ring in his hand, Roy Bouwsma, aka “the Omaha Kid,” got rematerialized instead with the stable door cutting directly through the center of his body from groin to skull—one half of him flopping down at Deb’s feet, the other half falling, like some neat bodily cross section carefully made for students of anatomy, into the stable with Deb’s confused horse Clem.

But while this atrocious moment, broadcast live on KMTV, nipped the new craze in the bud, the technology underlying it had already been adapted for use in what was then called “Tempus-Gliding,” which had the merely apparent advantage of concealing from those in the present any potential accident in the rematerialization of the voyager to the past. Of course, accidents continued to happen, and news of them eventually made its way back from past to present, bringing about all sorts of familiar paradoxes in the spacetime continuum. Tempus-Gliding, like any metachronic technology relying on body-transit, was a door thrown wide open to all the crazy scenarios we know from the time-travel tropes in science fiction going back at least to H. G. Wells: adults returning to the past and meeting themselves as children, meeting their parents before they were even born, causing themselves never to have been born and so suddenly to vanish, and so on. By the end of the 1960s people, and sometimes entire families, entire lineages, were vanishing as a daily occurrence (just recall the 1969 Harris family reunion in Provo!). You could almost never say exactly why, since the traveler to the past who would unwittingly wipe out all his descendants often had yet, in the present, ever to even try Tempus-Gliding.

A campaign to end the practice quickly gained speed. By 1973 the “Don’t Mess With Spacetime” bumper stickers were everywhere, and by the following year Tempus-Gliding was outlawed—which is to say, as is always the case in such matters, that only outlaws continued to Tempus-Glide. Scattered disappearances continued, public outcry against illicit Tempus-Gliding became more widespread. In 1983 Nancy Reagan made an unforgettable guest appearance on Diff’rent Strokes to help get out the message about the dangers of illegal body-transit. (“More than 40,000 young lives are lost each year to illegal Metachron gangs.” “What you talkin’ ’bout Mrs. Reagan?”) By the late 1980s a combination of tough-on-crime measures and transformations in youth culture largely ended the practice, and time travel would likely have remained as dormant as moon-travel if it had not in the last decade been so smoothly integrated into our new mobile technologies, and in a way that overcomes the paradoxes and inconveniences of Tempus-Gliding. It does so, namely, by taking the body out of the trip altogether.

This is the mode of time travel, of course, that has shaped a significant subcurrent of science fiction scenarios, notably Chris Marker’s La Jetée (1962), later adapted into the better known Bruce Willis vehicle 12 Monkeys (1995). While these films might seem exceptional, they also share something important with the great majority of what may be called time-travel tales avant la lettre, in which, typically, a man such as Rip Van Winkle goes to sleep for a very long time and wakes up in “the future.” The “zero form” of time travel, we are reminded, is simply to live, which is to say to travel forward in time at a slow and steady rate that only appears to be sped up or “warped” through deep sleep.

Be that as it may, when the new app-based time-travel technologies began to emerge in the late 2010s—relying as they did on a loophole in the 1974 law against time travel that defined it strictly as “metachronic body-transit”—they were all confronted by the hard limit on innovation already predicted by Quast, who remained committed until the end to the impossibility in principle of future-directed time-travel. “If you want to get to the future, you’re just going to have to wait,” Quast wrote in an entry in his Hefte dated 6 October, 1959 (SB-1omk 21.237). “To live in time is already to travel in time. So be patient” [ In der Zeit zu leben, das ist schon in der Zeit zu reisen. Hab also Geduld ]. Rumors of future-transit apps downloadable from ultra-sketchy oglindas have been circulating for years, but I’ve never seen any, and having studied Quast’s work I have come to believe that they are a theoretical impossibility.

The earliest apps, popping up mostly from anonymous sources, were mostly perceived as too dangerous and illicit to gain widespread appeal. “We’ve got that legal cannabis here in California now,” Whoopi Goldberg said on an episode of The View in September 2019. “If I want to take a little trip, I’m sorry but there’s edibles for that. I’m not messing with spacetime [ audience laughter ].” In an echo of the panic leading to the prohibition of Tempus-Gliding in the early 1970s, the government began to issue PSAs sensitizing the public to the serious psychological trauma that a return to our own pasts can trigger. “This is not lighthearted fun,” the messaging went. “Metachronism can ruin your life.”

The campaign against these new technologies would probably have killed them, or at least pushed them so far down into the oglindas as to occlude them from the public’s consciousness, if in 2021, at the worst moment of the pandemic, the ChronoSwoop company had not appeared as if out of nowhere and dropped its addictive new app with its signature “Swoop left/Swoop right” functions. Key to ChronoSwoop’s success was the discovery that users will draw significantly more pleasure from being cast into random moments in the past (Swoop left) than from being permitted to choose particular moments they have deemed significant in the post-hoc construction of their autobiographical self-narrative. And if you find yourself thrown back into an unpleasant or dull moment, then a single swift Swoop right will bring you immediately back into the present. You can of course go into your settings and laboriously reconfigure the app to permit you to choose your precise dates, but the great miracle of ChronoSwoop’s success is that almost no one bothers to do this. The people want their time travel to come with streamlined, easy interfaces. They want to move through the past like they move through their feeds: going nowhere in particular, with no clear purpose.

Quast had remained agnostic as to the possibility of body-less time travel, though he always insisted that, if it turns out to be possible, this will amount to an empirical proof of body-soul dualism. If the “self” can easily be inserted into the body it possessed at an earlier stage of life, while retaining all the memories of experiences from after that stage, this means, he believed, that the memories, as well as consciousness itself, cannot be dependent on the physical substrate of the brain that supposedly hosts them. When people first started ChronoSwooping, there were rumors of “headaches,” which were supposed to have resulted from the transit back in time of the more fully developed neurological structure of the time traveler—essentially cramming, say, a 38-year-old’s brain into the cranium of his 10-year-old past self. But of course no such thing occurs, for what travels back, as Quast predicted, is the immaterial self alone, and the fact that this is possible does indeed demonstrate, whether the scientific establishment is ready to admit it or not, that we do not need to remain anchored to any parcel of matter at all in order to exist as conscious beings.

ChronoSwoop beat out its early competitors (remember TimeDig? 😂) not only by getting rid of the date-choosing option, but also by adding sensorimotor control to the package. The earliest apps only planted your consciousness into the body of your past self and permitted you to “ride along,” to see and feel everything your former self saw and felt, but not to exercise any control over any of this. Quast predicted that only such passive riding would ever be possible, in part because any will-driven intervention in the sequence of past events, such as ChronoSwooping now makes possible, seems to generate at least as many paradoxes for the spacetime continuum as old-fashioned body-transit.

It’s not clear how ChronoSwoop managed to pull it off, but we can at least affirm what the emerging scientific consensus says about this new option, namely that it demonstrates the truth of the so-called “Many Worlds” interpretation of quantum mechanics, where each new timeline created by a different course of action initiated by a time traveler through the vehicle of that traveler’s own former self simply places that self on a different timeline of a different world, of which there are in any case infinitely many. These worlds are all self-contained and non-interacting, unless you can call ChronoSwooping itself a form of interaction, so that, however strange it all is, we at least avoid the more awkward conundra of body-transit, as when, for the millionth time, some idiot gets it into his head to “kill baby Hitler,” which of course means that more or less everyone in the world from roughly 1933 on, being affected by different events of the world, also ends up having sex at different times, different spermatozoa end up fecundating different eggs, and virtually all of us children of the 20th century disappear, until someone else arranges to kill the idiot who killed baby Hitler and set us back on our course again.

As an early adopter, I first ChronoSwooped in November 2021. The particular experience might seem unremarkable when I describe it, but for me, beyond being an occasion to see my deceased father again, it was my initiation into a world from which I have not really returned. I ended up, at random, back in December 2003. It’s Christmastime, and I’m visiting with my dad in Little Rock, where, I quickly recall, he has recently relocated after some career difficulties in the wake of the dotcom crash. “Have you seen this guy called Crazy Frog?” he’s asking me, as we stand in front of his desktop. “He’s kind of dumb but he makes me laugh.” I look at the animated amphibian with the aviator glasses, singing his ringtone melody over a techno remix of Herbie Hancock’s “Rockit.” I had forgotten all about this. How many other fragments of lost culture, I wonder, lie dormant in me at every moment? Crazy Frog jumps on an invisible motorcycle and revs it along a Möbius-strip highway. “I like it,” my dad says, smiling childlike. I am filled suddenly with infinite love for him. I can’t bear it, and I Swoop right.

I go back again and ChronoSwoop tells me it’s June 21, 1998. I’m sitting on a barstool in a place I seem to remember, but only vaguely. I can tell immediately that it’s very late at night, and that the version of me I have just Swooped into was feeling considerable stress just seconds before. I don’t share his precise memories, or, rather, what happened for him just a moment ago is at a 24-year remove for me, but his cortisol levels are mine now too, and I can tell something’s wrong. After a minute or so my ex-girlfriend S**** bursts out of the men’s room, followed by some miserable low-life wearing a T-shirt with a dumb neon alien’s head on it. He wanders off and she comes sheepishly to me. “We were only doing lines, I swear.” She sniffs and rubs her nose. I am suddenly filled with rage. What a miserable time of my life this was, I think, and again I Swoop right.

I took a break for the next three days, believing I had already had enough. I found myself not quite traumatized, but far more melancholic than I usually am, and largely convinced that what the PSAs were saying was true. This is not lighthearted fun. And yet, for some reason, I went back. I landed this time on February 11, 1979. It’s morning, and I’m on the playground of my Montessori school with Jeremy. He’s wearing an Oakland Raiders windbreaker and has mushroom hair like Nicholas from Eight Is Enough. He’s holding his thumb up to his mouth like it’s a microphone and his hand over his ear as if he has a headset. “This is Howard Cosell,” he says in a funny voice—a “Howard Cosell” voice. I am staring at him confusedly. He sees that I’m not laughing at his imitation. Something in my face frightens him, and he begins to cry. I Swoop right.

What was that all about? Jeremy was always a crybaby, but not like this. What did he see in my face that frightened him so? I drink a Nespresso and I think about what to do next. Maybe I’ve had enough already? No, I Swoop left, and it’s August 18, 1975. I’ve just had a shower and I’m in my long red nightshirt. It’s a summer evening in Rio Linda, the windows are open, and the frogs and bugs are croaking and chirping. I’m lying on the couch, and Mom’s cutting my toenails. I have the strong sense that this entire composition and every being involved in it—the frogs, the bugs, Mom, the sun—is in fact only one being; or more precisely, that it is only one being, and that being is me . This is what life used to be like! Before what? Before things came apart. That’s what it is to grow up: to see the world come apart. It’s too much for me. I Swoop right.

I resolve to end my explorations here, and a good two weeks go by before I find myself quite unconsciously, lying on my back on the couch, moving through the well-hidden settings in my app. I click on “Set Target Date” and immediately I am taken to a screen requiring me to upload a scan of a state-issued ID, which will then confirm my date of birth and prevent me from choosing any target date preceding that all-important threshold. Once this formality has been handled, I aim it back to November 19, 1972, and I set the visit duration for just 30 seconds. (I presume that if I am not yet four months old, even if I have some sensorimotor control over my body as well as my usual 49-year old consciousness about me, I still might simply lack the coordination to Swoop right.) It’s hard to say what I experience when I arrive. It’s warm, it’s light, and all is one. I’m lying there next to a funny man who’s watching something on TV, but I don’t know it’s a TV, and the sound of laughter is coming out of it. “PB&J with pickles,” the man says, repeating what he has heard, laughing. Somehow I don’t understand what this means, but I’m thrilled that he finds it so funny. “Did you hear that one? PB&J with pickles !” he shouts to someone who is not in the room with us, but whose presence I can feel. Such joy. Such love. I disappear.

The block on pre-birth travel is ostensibly to prevent the risk of “ditching,” where someone gets permanently stuck in the past. But as long as we are able to preset the duration of the visit, this concern seems ill-placed, and we can only imagine that the real reason is the one that Quast foresaw: “If it ever becomes possible experimentally to prove the immateriality of the soul,” he wrote, “they will do everything in their power to prevent us from finding out about it” (SB-1omk 24.785).

I’m not the sort of person to break the law casually, but what I experienced in the autumn of 1972 was simply too powerful, and I wanted more. I went to the Pakistani mobile-phone shop down at the corner, and sure enough, what they always say about these places is true. Just as the agile shopkeeper will happily oblige any request to repair your touchscreen or to unblock some old battered phone, no questions asked, neither will he look surprised when you ask him, as the parlance has it, to “take away your birthday.”

When I got back home I drank a Diet Dr. Pepper and I pondered different dates and durations until one came to me as if in a message: 1 minute, July 30, 1971—exactly a year before my birth. I Swooped left. I cannot tell you how or why this is so, but I can tell you that exactly a year before I was born, I was floating in warm liquid, and although I had no eyes to see it, I can tell you that there was light. This scene too was charged up with love.

It was also, somehow, charged up with knowledge. Though I did not “know” anything—about PB&J sandwiches, for example, or about parents, or Howard Cosell, or Crazy Frog—it seemed to me after my return that this is only because I knew everything, and I knew it from a vantage where the sharp differentiation between these sundry things seemed a far greater error than their combination. Seeing them all as one, it seemed to me now, felt unmistakably like what is imagined under the idea of heaven. St. Augustine writes that in death the soul returns to regionem suae originis —to the region of its origin, and here he is adapting within a Christian context the broadly Platonic vision of a pre-life life spent in direct communion with the eternal and unchanging Forms. Is that what I was seeing in 1971? If so, then why was everything so wet? No Platonic philosopher, Christian or heathen, ever conceived “baby heaven” in precisely this way.

You probably have some idea of what I did next. I scrolled back to the earliest transit date possible—January 1, 1900. I would have gone back far earlier, to 500 BCE, to 50 million ybp, to God knows when, but the drop-down calendar made its cutoff the beginning of the 20th century. So that’s where I went; nor did I set a duration for the visit.

I can’t tell you what happened after that, or whether I’m still there, or what is even happening anymore. If you think I’ve been spending my days watching mustachioed men on velocipedes going to the beach and changing there into comical striped one-piece bathing suits to play beach-croquet with ladies in bloomers, you really haven’t understood what pre-birth ChronoSwooping is like. I set the thing for 1900, but the human calendar doesn’t mean very much when you’ve shed your body, and your senses, and any trace of your connection to the world of particulars.

I would not recommend doing what I have done. It is not a question of being able “to handle it”; we “handle” whatever comes our way, even or perhaps especially the most impossible things. Unlike the world I saw in 1971, here it’s not even wet or light, but neither is it dry or dark. I know everything, if by “everything” we mean the timeless and universal truths, but as for individuals, facts, things that come and go, contingent beings and the ever-vanishing traces of events, I just can’t make anything out anymore.

“God made time to prevent everything from happening at once,” the diminutive Billy ponders, while looking up at the bright North Star like some junior magus in a Family Circus cartoon circa 1988 that somehow remains vivid to me in its particularity, like the answer to a riddle I never meant to pose, even as almost all other particulars recede from my consciousness. This too is a cliché, of course. Albert Einstein said something similar; so did many other people in fact, and they were all drawing broadly on a theory of temporal idealism that runs through many philosophical systems, including, on at least one understanding, that of Augustine. But no matter, it’s Bil Keane’s cartoon version that sticks with me. I love the Sunday funnies: so stupid; so comforting; so warm. I love TV. I love memes. They’re kind of dumb but I love them.

On these and other such small things was I trained up, like some innocent AI that knows no temporal flow at all, so that the dim outlines of them still move across memory’s stage even after I have used my app against the rules and withdrawn from Time altogether—before Time was yet able to withdraw from me.

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Is time travel real? People are flipping out over this 1860 painting that appears to show an iPhone

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs.

This time next week, Apple will be hosting its annual developer conference — WWDC, which is always one of the most anticipated technology industry events of the year. Among other things, Apple will show off the next generation of the operating software that powers its family of products including the iPhone, iPad, Mac, Apple Watch, Apple TV , and much more. And even though this will be a virtual event once again because of the coronavirus pandemic , the content of the conference as well as the volume of reportage from the scores of journalists and media outlets tuning in to cover the event will make clear just how central Apple’s products are to so many people’s lives.

In fact, the iPhone is baked so deeply into so many people’s daily existence and understanding of the world, that … well, let’s just say that people sometimes imagine the handset to have shown up in places where the otherwise ubiquitous smartphone shouldn’t. Like images of the iPhone supposedly being visible in multiple centuries-old paintings.

Before we answer, let’s take a look at another painting that attracted a similar bit of scrutiny, even once catching the attention of Apple CEO Tim Cook himself:

Man Handing a Letter to a Woman in the Entrance Hall of a House (1670) Pieter de Hooch (Dutch,1629-1684) Rijksmuseum pic.twitter.com/u435zTUWbS — John A Carollo (@JCarollo9) August 18, 2016

Focus on what the person on the far right in that image is holding in their hand — it sure looks like an iPhone, doesn’t it? In fact, what this person is holding in artist Pieter de Hooch’s more than 350-year-old painting Man Handing a Letter to a Woman in the Entrance Hall of a House even threw Cook briefly for a loop when he saw this painting in a museum during a trip to Amsterdam. “Do you happen to know, Tim, where and when the iPhone was invented?” former European Commissioner Neelie Kroes asked Cook during a question-and-answer session at the time, according to CNBC .

According to some authoritative sources, of course, it’s not an iPhone that these people are holding above but rather, in the case of The Expected One , a religious tract of some kind such as a hymn book. In the Pieter de Hooch painting, the answer would seem to be right there in the title of the painting (a letter). Having said that, of course, it’s nevertheless so revealing about the modern world that technology is ingrained so deeply into our lives that we’re starting to imagine we see traces of it even in the world of long ago. Go figure.

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This article talks about:

Andy Meek is a reporter based in Memphis who has covered media, entertainment, and culture for over 20 years. His work has appeared in outlets including The Guardian, Forbes, and The Financial Times, and he’s written for BGR since 2015. Andy's coverage includes technology and entertainment, and he has a particular interest in all things streaming.

Over the years, he’s interviewed legendary figures in entertainment and tech that range from Stan Lee to John McAfee, Peter Thiel, and Reed Hastings.

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May 15, 2023

Is Time Travel Even Possible?

Two SciAm editors duke it out to see if wormholes and multiverses could in fact exist.

By Lee Billings , Clara Moskowitz , Alexa Lim & Tulika Bose

Warp to planet Earth.

Nickpanya/Getty Images ; Elements provided by NASA; Title animation by Kelso Harper

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Clara Moskowitz:  We’re here today to talk about time travel. A perennial – dare I say, timeless–topic of science fiction, but is it possible? Is there any chance at all that it could actually happen?

Lee Billings: No. No, no no no no. (laughs). Well, kinda. Not really. ARGH. I’m Lee Billings.

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Moskowitz: I’m Clara Moskowitz, and this is Cosmos, Quickly , the biweekly space podcast from Scientific American . 

[Clip: Show theme music]

Moskowitz: We’re going to have a little friendly debate.

Billings: Really? I came for a throwdown.

Moskowitz: Well, a wrangle. A parley. A confab. Lee, what do you have against time travel?

Billings: So I love the idea of time travel! And in fact I do it all the time—like most everyone else I’m traveling into the future at one second per second. I’m less of a fan, though, of more speculative time travel, which is good fodder for goofy sci-fi stories, but in the real world it’s an implausible distraction.

Moskowitz: But really, we can stay within plausible physics and still see how more extreme versions of time travel are possible. See, Einstein’s special theory of relativity shows that the rate time flows at depends on how fast you’re moving. 

Billings: Einstein strikes again, what a rascal.

Moskowitz: If you’re traveling in a starship at close to the speed of light, you’ll still experience the familiar one-second-per-second ticking of a clock– but an observer back on Earth would see your clock moving glacially slow. To them, you’d be moving through time at a snail’s pace. That means that when you finally got back,  maybe only a year would have passed for you, but a century could have gone by for your friends on Earth. Ergo, you just traveled to the future! 

Billings: Right, right, no one’s disputing any of that! We can even measure this sort of “time dilation” right now on Earth, not with starships, but with subatomic particles. Some of those particles have very short lifetimes, decaying almost instantaneously. But if we drastically speed them up, like in a particle accelerator, we find they endure longer in proportion to how fast they’re going. So riddle me this, though, Clara: How can we travel into the past? That’s something so hard to do–effectively impossible, almost–that it’s scarcely worth thinking about.

[Clip: Back to the Future : “This is what makes time travel possible. The flux capacitor!”]

Moskowitz: I get it—no one has yet conceived of a way to journey to the past. But the crazy thing is it’s not impossible. Time is one of the four dimensions in the universe, along with three dimensions of space. And we move through space in all directions just fine, and according to physics, travel through time should be just as possible.

One way that people have looked into is via a wormhole—a shortcut bridge through spacetime that was predicted by general relativity. Wormholes can connect distant points in spacetime, meaning you could conceivably use one to bridge not just the gap between here and a distant galaxy, but the span between 2023 and 1923. 

[CLIP: Interstellar : “That’s the wormhole.”]

Billings : Ah yes, wormholes—the last refuge of scoundrels and desperate physicists. The trouble with wormholes Clara, is that, unlike a DeLorean, we have no evidence they actually exist—and, even if they did, it seems the only ways to make them traversable and stable involves using negative energy or negative mass  to prop them open. And, guess what, just like wormholes themselves, we have no evidence these weird forms of matter and energy actually exist, either. And let’s just beat this dead horse one more time—even if wormholes exist, as well as the means to make them traversable, to go back in time seems to require anchoring one end in a region of very warped spacetime, like around a black hole, or accelerating it to nearly lightspeed. Are you sensing a theme here, Clara?

Moskowitz:  Yeah, yeah. All I can say is that just because there’s no evidence any of these things exist, there’s also no evidence they don’t or can’t exist. Wormholes are real solutions to the equations of general relativity, and even negative energy and mass are concepts that come up in the math and aren’t prohibited.

Billings: Well how about some more practical arguments, then? If time travel were possible, wouldn’t we have met some time travelers by now? Wouldn’t someone have gone back and killed Hitler—or at least prevented me from wearing that ridiculous outfit to my high school prom? You know there’s a famous story about physicist Stephen Hawking, who invited time travelers to come to a party he was holding. The trick was the the party happened in 2009, but the invitation came out in a miniseries that was broadcast in 2010—thus, only time travelers would have been able to attend. 

[CLIP: Stephen Hawking Time Travel Party: “Here is the invitation, giving the exact coordinates in time and space. I am hoping in one form or another it will survive for many thousands of years.”]

Billings: Sadly, the hors d'oeuvres went uneaten and the champagne sat unopened, because, clearly, time travel to the past is impossible! 

Moskowitz: I admit a party with Stephen Hawking should have been pretty alluring to time travelers, if they were out there. But you’re forgetting about the International Clause of Secrecy that all time travelers probably have to swear to, making sure to hide their identities and abilities from those in earlier eras.  

Billings: Hmm, yes the clause of secrecy here. Feels like we’re really veering into science fiction territory special pleading here. And don’t forget all the paradoxes that we have to worry about too. There are lots of good reasons to think time travel might introduce insurmountable paradoxes in physics. The most famous being the grandfather—or grandmother—paradox. If time travel were possible into the past, so the thinking goes, then a person could go back in time and kill their own grandparents, thus making it impossible for them to be born and impossible for them to travel back in time to ever commit the murder, and so on and so on.

Moskowitz: I wonder if it could be like a many-worlds scenario, where each change a time traveler makes to the past spawns a whole new universe that carries on from that point. So if I went back in time and killed one of my forebears, then a new branch universe would begin where that whole line of descendents, including me, never existed. I mean, it sounds crazy, but then again, physics is pretty enamored with multiverses, and they seem to pop up for lots of reasons already. Maybe it’s not impossible? 

Billings: If not impossible, then I’d say, implausible.

Moskowitz: Well, I’m forever an optimist, Lee! Thanks for listening to the Cosmos, Quickly .

Billings: Our show is produced by Jeff DelViscio, Tulika Bose and Kelso Harper.  Our music was composed by Dominic Smith.

Moskowtiz: If you like the show, please consider rating or leaving a review. You can also email feedback, questions, and tips to [email protected] . 

Billings: For more spacetime hijinks and all your science news, head to SciAm.com. This has been Cosmos, Quickly . I’m Lee Billings. 

Moskowitz:  I’m Clara Moskowitz. Billings: And we’ll see you next time, in the future!

Apple TV Plus calls time on its reboot of a beloved 80s fantasy movie and cancels Time Bandits after one season

Apple TV Plus won't turn back time for Time Bandits

The Apple TV Plus show Time Bandits has run out of time as one of the best streaming services has canceled the series after one season.

The fantasy show was added to Apple TV Plus in late July and despite getting a 78% score from the critics on Rotten Tomatoes, the streamer has decided not to renew the series adaptation of Terry Gilliam's 1981 cult classic movie for a second season.

It's no surprise that Time Bandits received positive reviews given the amount of high-quality content the streaming giant consistently puts out – just look at our picks of the best Apple TV Plus shows . The fantasy series, created by Taikia Waititi, Jemaine Clement, and Iain Morris, was praised for its nostalgic nod to the original blockbuster with The Guardian writing: "this remake of the 80s film is a confident, hilarious romp through history." However, this wasn't enough to save Time Bandits from being axed.

According to Deadline , the Lisa Kudrow-led show did not attract a large enough audience and didn't break into Nielsen's Top 10 streaming rankings. Now Time Bandits is just another canned series for fantasy fans to mourn, along with Prime Video canceling My Lady Jane and Netflix ending The Grimm Reality  from the producers of  Dark , despite filming being completed.

What is Time Bandits about?

Time Bandits is based on Gilliam's iconic 80s fantasy movie that follows 11-year-old history buff Kevin (Kal-El Tuck), who finds a time-traveling portal in his wardrobe and joins a gang of expert thieves. Led by Penelope (Kudrow), the bandits go on fantastical adventures while evil forces threaten their endeavours. As they travel through time and space stealing valuable treasure, the gang come across enchanting distant worlds and rely on Kevin to explain various situations.

The series also features Charlyne Yi, Rune Temte, Tadhg Murphy, Kiera Thompson, Roger Jean Nsengiyumva, and Rachel House with show creators Waititi and Clement also making guest appearances.

Time Bandits isn't the only show that Apple  TV Plus has dropped from its library, with the curtain being drawn on musical comedy  Schmigadoon! earlier this year and it also quietly canceling hit animated series Central Park that had 98% on Rotten Tomatoes. Despite its sad cancelation, there's still plenty to watch in the new movies and shows on Apple TV Plus that we can't wait to watch in September 2024.

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After graduating with a degree in Writing and Film Studies, Grace dived into the world of entertainment where she started writing all about the must-watch shows and movies at What To Watch. Now Grace is on her next writing adventure at TechRadar, where she uses her expertise to help readers keep up to date on the biggest TV shows and movies in the ever-changing world of streaming. If she’s not writing about her passion for entertainment, you’ll find her watching reality shows while feasting on chocolate. 

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Is Time Travel Possible?

We all travel in time! We travel one year in time between birthdays, for example. And we are all traveling in time at approximately the same speed: 1 second per second.

We typically experience time at one second per second. Credit: NASA/JPL-Caltech

NASA's space telescopes also give us a way to look back in time. Telescopes help us see stars and galaxies that are very far away . It takes a long time for the light from faraway galaxies to reach us. So, when we look into the sky with a telescope, we are seeing what those stars and galaxies looked like a very long time ago.

However, when we think of the phrase "time travel," we are usually thinking of traveling faster than 1 second per second. That kind of time travel sounds like something you'd only see in movies or science fiction books. Could it be real? Science says yes!

This image from the Hubble Space Telescope shows galaxies that are very far away as they existed a very long time ago. Credit: NASA, ESA and R. Thompson (Univ. Arizona)

How do we know that time travel is possible?

More than 100 years ago, a famous scientist named Albert Einstein came up with an idea about how time works. He called it relativity. This theory says that time and space are linked together. Einstein also said our universe has a speed limit: nothing can travel faster than the speed of light (186,000 miles per second).

Einstein's theory of relativity says that space and time are linked together. Credit: NASA/JPL-Caltech

What does this mean for time travel? Well, according to this theory, the faster you travel, the slower you experience time. Scientists have done some experiments to show that this is true.

For example, there was an experiment that used two clocks set to the exact same time. One clock stayed on Earth, while the other flew in an airplane (going in the same direction Earth rotates).

After the airplane flew around the world, scientists compared the two clocks. The clock on the fast-moving airplane was slightly behind the clock on the ground. So, the clock on the airplane was traveling slightly slower in time than 1 second per second.

Credit: NASA/JPL-Caltech

Can we use time travel in everyday life?

We can't use a time machine to travel hundreds of years into the past or future. That kind of time travel only happens in books and movies. But the math of time travel does affect the things we use every day.

For example, we use GPS satellites to help us figure out how to get to new places. (Check out our video about how GPS satellites work .) NASA scientists also use a high-accuracy version of GPS to keep track of where satellites are in space. But did you know that GPS relies on time-travel calculations to help you get around town?

GPS satellites orbit around Earth very quickly at about 8,700 miles (14,000 kilometers) per hour. This slows down GPS satellite clocks by a small fraction of a second (similar to the airplane example above).

GPS satellites orbit around Earth at about 8,700 miles (14,000 kilometers) per hour. Credit: GPS.gov

However, the satellites are also orbiting Earth about 12,550 miles (20,200 km) above the surface. This actually speeds up GPS satellite clocks by a slighter larger fraction of a second.

Here's how: Einstein's theory also says that gravity curves space and time, causing the passage of time to slow down. High up where the satellites orbit, Earth's gravity is much weaker. This causes the clocks on GPS satellites to run faster than clocks on the ground.

The combined result is that the clocks on GPS satellites experience time at a rate slightly faster than 1 second per second. Luckily, scientists can use math to correct these differences in time.

If scientists didn't correct the GPS clocks, there would be big problems. GPS satellites wouldn't be able to correctly calculate their position or yours. The errors would add up to a few miles each day, which is a big deal. GPS maps might think your home is nowhere near where it actually is!

In Summary:

Yes, time travel is indeed a real thing. But it's not quite what you've probably seen in the movies. Under certain conditions, it is possible to experience time passing at a different rate than 1 second per second. And there are important reasons why we need to understand this real-world form of time travel.

If you liked this, you may like:

Apple TV+ Is Rebooting The Most Outrageous Time Travel Comedy Ever

“It’s evil, therefore it’s serious.”

Rebooting Terry Gilliam's sci-fi classics is a tricky business. While the SyFy Channel’s 12 Monkeys ended up being a complementary successor to Gilliam’s 1995 film , who would dare mess with another (though very different) Gilliam cult hit? Why would it ever be a good idea to reboot Time Bandits ?

The answer is that if you hire Jemaine Clement, Iain Morris, and Taika Waititi to do a new version of Time Bandits for Apple TV+, then maybe they’ll not only do the original film justice but also make something fantastic in its own right. Starring Lisa Kudrow, the first trailer for the new Time Bandits series just dropped, and you’d have to have a very cold heart not to crack a smile.

Like the original 1981 film, the TV series will focus on a group of rag-tag thieves who accidentally pick up a young boy named Kevin who’s obsessed with history. Kudrow plays Penelope, the pseudo-leader of the Time Bandits, who fits in perfectly with the comedy crafted by Clement, Morris, and Waititi. The colorful, outlandish trailer gives off major Lemony Snicket vibes, and Apple is clearly hoping to make the show a crossover hit for families.

For sci-fi movie buffs, seeing Time Bandits resurrected is exciting simply because the original film represents a certain moment in speculative cinema that seems to have passed. In the 1980s, Time Bandits was part of an exciting sub-genre where young kids could get in on the action without delegitimizing it. From Labyrinth to The Goonies , The Explorers, and The Never-Ending Story , several sci-fi and fantasy films delivered a new kind of family movie that could be legitimately scary and have real stakes, yet still somehow sport an all-ages appeal.

The 21st-century spiritual successor to all of this is Netflix’s Stranger Things, although, unlike the streamer’s A Series of Unfortunate Events, you wouldn’t want to watch Stranger Things with a child. Based on the trailer, it seems like Time Bandits is poised to be more like the 2023 film Dungeons & Dragons: Honor Among Thieves, in that it’s a throwback-style narrative with a lot of laughs that offers good, clean genre fun. In that sense, Time Bandits seems poised to tackle a demographic Apple TV+ hasn’t quite cracked yet: a family-friendly genre series with the quality of a prestige show.

Time Bandits debuts two of its 10 episodes on Wednesday, July 24, on Apple TV+.

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Is time travel real? People are flipping out over this 1860 painting that appears to show an iPhone

This time next week, Apple will be hosting its annual developer conference — WWDC, which is always one of the most anticipated technology industry events of the year. Among other things, Apple will show off the next generation of the operating software that powers its family of products including the iPhone, iPad, Mac, Apple Watch, Apple TV, and much more. And even though this will be a virtual event once again because of the coronavirus pandemic , the content of the conference as well as the volume of reportage from the scores of journalists and media outlets tuning in to cover the event will make clear just how central Apple’s products are to so many people’s lives.

In fact, the iPhone is baked so deeply into so many people’s daily existence and understanding of the world, that … well, let’s just say that people sometimes imagine the handset to have shown up in places where the otherwise ubiquitous smartphone shouldn’t. Like images of the iPhone supposedly being visible in multiple centuries-old paintings.

Take a look, for example, at the image at the top of this post. Titled The Expected One , it’s a painting by 19th-century Austrian artist Ferdinand Georg Waldmüller, and it garnered some Internet virality a few years ago thanks to the fact that it looks, from a distance, as though the girl appears to be holding… is that… an iPhone?

Before we answer, let’s take a look at another painting that attracted a similar bit of scrutiny, even once catching the attention of Apple CEO Tim Cook himself:

Man Handing a Letter to a Woman in the Entrance Hall of a House (1670) Pieter de Hooch (Dutch,1629-1684) Rijksmuseum pic.twitter.com/u435zTUWbS — John A Carollo (@JCarollo9) August 18, 2016

Focus on what the person on the far right in that image is holding in their hand — it sure looks like an iPhone, doesn’t it? In fact, what this person is holding in artist Pieter de Hooch’s more than 350-year-old painting Man Handing a Letter to a Woman in the Entrance Hall of a House even threw Cook briefly for a loop when he saw this painting in a museum during a trip to Amsterdam. “Do you happen to know, Tim, where and when the iPhone was invented?” former European Commissioner Neelie Kroes asked Cook during a question-and-answer session at the time, according to CNBC .

“You know, I thought I knew until last night,” Cook said in reply, referencing the painting above. “There was an iPhone in one of the paintings. It’s tough to see, but I swear it’s there.”

According to some authoritative sources, of course, it’s not an iPhone that these people are holding above but rather, in the case of The Expected One , a religious tract of some kind such as a hymn book. In the Pieter de Hooch painting, the answer would seem to be right there in the title of the painting (a letter). Having said that, of course, it’s nevertheless so revealing about the modern world that technology is ingrained so deeply into our lives that we’re starting to imagine we see traces of it even in the world of long ago. Go figure.

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Understanding time travel on the apple watch.

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Today we want to talk about Time Travel. No, we don't mean actually going forward and backward temporarily. Rather, we want to talk about Time Travel as it pertains to the Apple Watch, what it is for, and what it does.

If you own an Apple Watch, then you might be wondering what the heck is going on when you spin the digital crown while it is showing a watch face. You'll notice that the time will shift forward and depending on which watch face you have showing,

Time Travel works in conjunction with each particular watch face's characteristics as well as any complications that may arise. Complications are simply things that happen during the course of a day, whether it's sunrise/sunset, weather events, meetings and appointments, or anything else that may occur and display on the watch face. You can even add third-party complications to your Watch so it is has further functionality.

Let's look at some examples of what different watch faces can display. One of the most comprehensive examples of Time Travel can be found on the Modular watch face.

In the example on the left, we see the current time and date but when we spin the digital crown ahead (or back) a little over 9 hours (you can see how far forward or backward in the upper-right corner), the watch face shows us the time at that point, that we have no more events, and what the temperature is expected to be.

Here is an example of the Astronomy watch face. Here we see the current phase of the moon and if we spin the digital crown ahead 23 days, the face shows us there will be a full moon on December 25th.

If we tap on the solar system view, we can view the alignment of the planets on this day, or at some point in the future.

The Solar watch face will display where the sun is in the sky now, and on the right we see where it will be in about seven hours at sunset.

Time Travel doesn't work with all watch faces including Motion, Timelapse, Photo Album, and X-Large. Moreover, some features will obviously not be available with all Time Travel compatible watch faces. So, it really all depends on which face you want to use and what you want to use it for. You may not need to know what events you have coming up or care what the temperature will be in the next 12 hours.

On the other hand, Time Travel is very useful for anyone with a busy schedule or who simply wants to be in-the-know about upcoming as well as previous complications.

As you can see, Time Travel is a very simple concept to grasp and utilize so if you find yourself wondering what the rest of your day or week holds in store for you, it's a great of staying abreast of your schedule.

We hope you found this article useful, if you have any questions or comments you would like to add, please contribute your feedback to our discussion forum.

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I Drank Apple Cider Vinegar Every Day for a Month, and I Noticed the Effects Right Away

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Apple cider vinegar—is it just another detox trend ? These days, anyone looking for a simple health booster is spoiled for choice. When it comes to superfoods, immune shots , and supplements, there seem to be an endless array of options. But apple cider vinegar stands out from the crowd. Why? When consumed daily, the fruity vinegar is said to have several positive effects—all of which sound pretty tempting.

That said, apple cider vinegar is hardly a new health trend—in fact, it has long been a staple in the kitchen and medicine cabinet. But while it may have ancient roots, it’s now experiencing something of a revival.

Be wary, though: It’s not a total cure-all. “Just as we do not eat one food alone, apple cider vinegar can be part of a healthy diet,” says Toby Amidor, MS, RD, CDN , an award-winning nutrition expert and the Wall Street Journal bestselling author of Health Shots: 50 Simple Tonics to Help Improve Immunity, Ease Anxiety, Boost Energy, and More . “But it shouldnt be considered a magic potion.”

Why I chose to do an apple cider vinegar test

I attach great importance to my health and well-being, which is why I’m a big fan of immune cures, supplements , and the like. However, it’s important to me that the things I give my body are of natural origin—and are relatively easy to integrate into my everyday life. Apple cider vinegar ticks all of my boxes.

For one thing, my sensitive stomach often gives me a hard time. Apple cider vinegar is said to have a special effect on the gastrointestinal tract. This was reason enough to incorporate vinegar into my morning routine for four weeks to observe the possible effects.

The results are seriously impressive.

Apple cider benefits

Apple cider vinegar is made from apple cider and contains valuable acetic acids in addition to a few nutrients from the fruit. These in particular are said to have several positive effects on our health.

• Due to its antibacterial properties, apple cider vinegar is said to be able to kill germs and bacteria in the body.
• Acetic acid in particular can boost our metabolism and thus keep all the important defense and regeneration processes in the body running.
• The bacteria it contains can balance our intestinal flora .
• Apple cider vinegar has a slightly alkaline effect and is said to be particularly good for heartburn as it can neutralize stomach acid.
• The vinegar can also have a regulating effect on blood sugar levels and thus counteract food cravings.
• Apple cider vinegar is also said to have a positive effect on cholesterol levels.
• Vinegar stimulates the production of gastric fluids and therefore digestion in general. This can counteract a bloated stomach and a feeling of fullness.
• The intake of apple cider vinegar is said to prolong the feeling of satiety after a meal. (However, others refute this claim .)

Your gut will thank you.

Some concerns about drinking apple cider vinegar

While the list of positive properties of apple cider vinegar is surprisingly long, there is still very limited research available. “Several health claims associated with apple cider vinegar include weight loss, blood sugar control, and reduction of cholesterol—however, there isn’t enough research to make any of these claims,” says Amidor.

Amidor adds that apple cider vinegar isn’t recommended for people with type 1 diabetes taking insulin, as it can reduce blood sugar levels to a dangerously low degree.

“There are several potential side effects of taking apple cider vinegar,” Amidor says. “This includes tooth enamel damage, per some published studies . Esophageal burns is another issue due to the high acidity of apple cider vinegar, which can result in ulceration and burning of the esophagus when drinking it undiluted or not diluted enough.”

It's a common ingredient in many anti-aging skincare products.

Another potential side effect: Amidor says it can result in slowed digestion because vinegar delays the emptying of the stomach, a condition called gastroparesis (or stomach paralysis). “People living with diabetes are at higher risk for this condition, so it should be kept in mind before taking it,” Amidor says.

And finally, drinking apple cider vinegar regularly can result in low potassium levels. “If you have been diagnosed with low blood potassium levels, it’s recommended to avoid taking apple cider vinegar as a supplement,” Amidor says. “Apple cider vinegar also interacts with a variety of medications and supplements. This includes Digoxin (Lanoxin), diabetes medications, diuretics, and herbal supplements. Always consult with your health care provider before taking apple cider vinegar in spoonfuls or in supplement form.”

How to add apple cider vinegar to your diet

“Although the evidence isn’t strong in taking apple cider vinegar, the recommended amount is 1 tablespoon if you choose to take it in liquid form,” Amidor says. “Always consult with your health care provider before taking it. If you choose to take supplements, make sure it is third party verified for quality and to ensure the amount listed is there.”

To find out how the regular intake of apple cider vinegar would affect my health and well-being, I drank it every morning on an empty stomach about 15 minutes before breakfast.

Because of the acidity, you should always do this with water and dilute about two teaspoons of vinegar in 200 ml of water. This is not only important for the taste, but also because it protects your teeth enamel from the acidity of the vinegar.

Beware: The taste of the apple cider vinegar is not a treat! However, I did quickly get used to the routine.

Could this be my new flat white?

My verdict:

The taste of the apple cider vinegar was definitely a hurdle for me. Nevertheless, I went through with the test, mainly because I noticed the effects of it after just a few days.

By drinking apple cider vinegar in the morning, I actually had the feeling that my entire body was able to get going more quickly. I felt fit and ready for the day much sooner.

I also had the impression that the breakfast I ate after was being digested better and faster. Due to my rather sensitive stomach, I usually have feel full or even bloated after breakfast. This feeling was completely absent whenever I regularly drank apple cider vinegar.

After four weeks of drinking apple cider vinegar every morning, I definitely had the impression that my intestinal health had improved. I also noticed that in the very month during which I carried out this test, some friends and family members in my immediate circle had a cold or even some kind of summer flu. I, however, was spared any infections or colds. Whether my strong immune system was due to the apple cider vinegar or something else, I can’t say for sure.

Tips for drinking apple cider vinegar

Protect your tooth enamel: When drinking the vinegar, it can be useful to use a straw to protect your teeth from the acid.

Sweeten your drink: Try adding a drop of honey, agave syrup, or maple syrup to help soften the sour taste.

Drink a glass of water right away: This helps lessen the biting sensation in the upper part of your nose.

Incorporate apple cider vinegar into your food: “Another way to take in apple cider vinegar is by adding it to meals, like as a vinaigrette dressing, in sauces, or in healthy shots ,” Amidor says. “This way you can dilute the acidity of the vinegar and incorporate it with other healthy foods.” So if you don’t want to drink it straight, you can easily incorporate your daily ration into delicious recipes. For example, you can replace the vinegar in any dressing with apple cider vinegar—its fruity flavor makes salads really tasty, especially in the summer. You can also add a tablespoon or so of apple cider vinegar to the dough in baked goods such as bread, rolls, or baguettes. The fruity vinegar mimics the taste of sourdough and gives a wonderful light acidity.

What you should look out for when buying apple cider vinegar

We add vinegar to our bodies in the hope that it’ll have positive effects on our health and well-being. So buying good quality apple cider vinegar is imperative because some very low-priced products are made only from apple scraps or even just concentrate.

You will get the fullness of nutrients and good vinegar bacteria if you make sure that the vinegar is made from whole fruit and has not been pasteurized or heated. It’s also advisable to choose naturally cloudy apple cider vinegar, as no valuable particles have been filtered out of it.

If you want to be on the safe side when it comes to quality, you should opt for an organic product.

This post was originally published in Glamour Germany with additional reporting by Glamour US deputy editor Anna Moeslein.

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Use Time Travel on your Apple Watch

Time Travel is a feature of watchOS 2 and later which lets you see what's ahead in your day. When you rotate the Digital Crown while your watch face is displayed, compatible complications will show you their status at the time you select rather than the current time. As an example, if you use the Weather complication, it will show the current temperature. If you use Time Travel and scroll to one hour in the future, the complication will show you what the forecast is at that time. Note that not all complications are compatible with Time Travel. The complication icon will be faded if it does not support Time Travel. For example, with the Activity complication, you can scroll backward to see how much progress you had made earlier in the day, but the icon will dim if you scroll forward as it cannot predict your progress later in the day.

Time Travel in action

With Time Travel, you can go backward up to the beginning of the previous day, or forward up to the end of the following day.

In watchOS 2.0 - 2.2.2, Time Travel is always enabled. In watchOS 3.0 and later, you will need to turn it on. To do so, grab your iPhone, and go to Watch > Notifications > Clock > Time Travel, and turn it on.

Not sure what version of watchOS you have? You can find out by going to Settings > General > About > Version. If you'd prefer to check on your iPhone instead of directly on the watch, you can go to Watch > My Watch > General > About > Version.

Sep 13, 2016 3:32 PM

Great tip !!! 🙂

Sep 14, 2016 12:10 AM

Thank you 🙂

Mar 4, 2021 1:37 PM

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Apple Watch Time Travel vs. Pebble Time: Just how big a rip-off is this?

Pebble couldn’t have been pleased with the smartwatch portion of Apple’s Worldwide Developers Conference keynote last week.

Apple seemed to have taken a page straight out of Pebble’s playbook with an Apple Watch feature called Time Travel. Coming this fall in watchOS 2 , Time Travel will let users scroll the Watch’s Digital Crown to view information from the past or future, straight from their main watch face. A forward scroll, for instance, could show tomorrow’s weather forecast, and a backwards scroll could reveal the score of last night’s game.

Months earlier, Pebble had revealed a similar feature called Timeline as part of its new Pebble Time smartwatch. By pressing up or down on the watch’s buttons, users can jump into the past or future to see relevant bits of information. Pebble clearly saw Timeline as a crowning achievement in smartwatch software, with CEO Eric Migicovsky telling The Verge that it was unlike anything Apple or Google had come up with. “We’ve found a new framework to use as an interaction model on the watch,” he said in February.

Coincidence or not, Apple has taken a liking to this interaction model as well. But is the Apple version of time-based information a pale imitation, a shameless rip-off, or a clever iteration? Upon closer inspection, it’s a combination of all three.

The importance of time

Before we dive in, let’s back up and consider why Apple needed a feature like Time Travel in the first place.

In my experience, the Apple Watch has been a beautiful piece of hardware with deeply flawed software . While the design is sharper than any other smartwatch on the market—even on the basic Apple Watch Sport I’ve been wearing for two weeks—watchOS can seem awfully dumb.

Most reviews picked up on the obvious drawbacks, such as the confusing interface and the sluggish, non-native apps (the latter of which should also be addressed by watchOS 2). But my complaint is more fundamental: In regular use, I’m rarely compelled to do anything on the watch besides looking at notifications and checking the time. Everything else, from futzing with the app launcher to fiddling with Glances, feels like a waste of energy. I might as well just take out my phone.

The missing ingredient is context. With smartwatches, I’ve taken to saying that if you see an app launcher, they blew it . Sure, picking an app from a list makes sense in a handful of situations, but most of the time, I want my smartwatch to figure things out for me. Using context, it should know what information I need, and understand when to serve it. That way, the watch not only saves time, but provides valuable insight into my day.

It turns out that as a contextual tool, time is pretty important. It dominates so many aspects of our lives—time for the next appointment, time to water the plants, time to watch the game—that a smartwatch could become pretty clever just by organizing its information around time.

With Pebble’s Timeline feature, future events are always just a tap away.

That’s why Pebble’s Timeline and Apple’s Time Travel are such important features. Instead of just reminding us of important events through notifications, as our phones already do, these smartwatch features give us a quick high-level overview on demand. They’re much more powerful than notifications, yet faster than digging through apps or swiping through Glances. In other words, they’re a great interaction model for a smartwatch. Pebble’s Migicovsky was spot-on.

Pick a time, any time

While Pebble and Apple seem to have created similar systems, in some ways they are very different.

With Time Travel, Apple’s use of “complications” on the watch face could let users combine data points for better insights. Say, for instance, you have one complication for sports scores, and another for sports headlines. A quick scroll back in time might give you the score and a one-line recap. Apple’s watchOS 2 preview site gives an even simpler example: With calendar and weather complications, you could see the weather forecast for tomorrow’s meeting—just in case you’re thinking of having it outside.

The robustness of Apple’s platform also makes a huge difference. Let’s say you wanted to read more of that game recap. A tap on the complication would let you dive into the app for a lengthier description, and from there you might even be able to send the story to your iPhone with Handoff. Want to reschedule your meeting based on the weather? A quick chat with Siri could help you get that done. While you can also launch apps from Pebble’s Timeline, they’re not nearly as capable.

Combining multiple points of data could come in handy with Time Travel on the Apple Watch.

If there’s an advantage for Pebble, it’s that Timeline is less constrained in how much information it can reveal. Whereas the Apple Watch is limited by the number complications that fit on the screen—you can’t pack in more than five right now—with Pebble you can stuff as many points of data into the Timeline as you want,

The fact that Pebble’s Timeline is separate from the watch face is also beneficial, in a way that nicely suits Pebble Time’s always-on display. Right now, my Pebble Time review unit is rocking a picture of Mega Man on a blue background, and I wouldn’t have it any other way. With the Apple Watch, four out of 10 watch faces don’t support complications at all, and it looks like the upcoming Photo watch face won’t have complications either. Using any of these faces will mean missing out on Time Travel entirely.

Where Apple excels

Beyond these conceptual distinctions, there are some differences of execution to consider, and here it’s hard not to see Apple as the victor.

Right now, Pebble’s Timeline doesn’t have a lot of developer support—I count 21 apps that integrate with Timeline—and as a result it doesn’t feel like the game-changing feature that it could be. In fairness, it’s early days for the Pebble Time, but we can safely assume Apple is going to have less trouble getting developers on board. Even before launch, the Apple Watch accrued more than 1,000 apps—many from major brands that haven’t touched Pebble—and Time Travel gives them a chance to occupy prime real estate on users’ wrists.

Apple’s hardware also lends itself to a time-based interface, with the ability to scroll through time instead of having to tap repeatedly on buttons. I don’t get much use out of the Digital Crown now—usually it’s easier to just swipe on the screen—but Time Travel could finally make this hardware flourish seem essential.

That’s not to say Apple’s mimicry renders the Pebble Time obsolete. If you enjoy the original Pebble’s always-on display and multi-day battery life, the Pebble Time is a fine improvement. (My biggest complaints so far: The screen can look dim when it’s not in direct light, and the battery keeps falling short of the advertised week-long runtime.) I’ve ordered a Pebble Time Steel for myself, and don’t regret it.

At the same time, I don’t fault Apple for running with Pebble’s signature software feature. This is how competition works, and now it’s on Pebble to make its brilliant idea even better. May the smartest watch win.

Author: Jared Newman , Contributor

Jared has been a freelance technology journalist for more than 15 years and is a regular contributor to PCWorld, Fast Company, and TechHive, where he's written a weekly cord-cutting column since 2014. His Cord Cutter Weekly newsletter has more than 30,000 subscribers, and his Advisorator tech advice newsletter is read by nearly 10,000 people each week. Jared has a master's degree in journalism from NYU and specializes in making complex tech topics easy to understand, from streaming and cord-cutting to neat apps and useful tech tricks. He is based in Cincinnati, OH.

Recent stories by Jared Newman:

• Apple Watch sales estimate: 7 million after six months
• The Swatch smartwatch is more disappointing than anyone could have imagined
• Apple Watch apps won’t install? Here are some possible fixes

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The best images of time travellers from throughout history.

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Every now and then an image appears online which people claim shows a time traveller somewhere they shouldn't be. But are they just cases of people letting their imaginations run wild?

We've rounded up some of the best and most interesting images of time travellers throughout history. Some turned out to be plain fakes or cases of mistaken identities, but others are certainly intriguing.

Which have you seen before?

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The time travelling hipster

This photo was snapped in 1941 at the re-opening ceremony for the South Fork Bridge in British Columbia.

If you look carefully, on the right-hand side you can see an unusually dressed man in what appears to be modern clothing, sporting sunglasses at a time when most were wearing hats and smart jackets.

Many argue this is a time traveller, while others have countered that he's simply a man with a fashion sense ahead of his time. Snopes has shown his clothing is relevant to the time and the area, but it's still great to imagine.

World Cup celebrations

This photo comes from the 1962 World Cup and shows the celebrations as the Brazilian team lifts the trophy.

If you look closely though, you'll see in the bottom centre of the image what looks like someone with a mobile phone snapping a photo of the event.

Could this be a time traveller as well? A bit odd to think someone in the future might have a flip phone , but then they have been making a comeback recently and we know folding phones are about to be big too .

The time travelling sun seeker

This image from 1943 apparently shows British factory workers escaping to the seaside for a break during the midst of wartime. The clothes and beachwear of most people certainly fit the era, but in the centre of a frame appears to be a man dressed like Mr Bean checking his mobile phone.

Or maybe it's a time travel device? Likely a bit of a stretch or a case of overactive internet imagination, but we still enjoy the thought. Maybe there are no public beaches in the future?

Mohawk time traveller

This image from 1905 appears to show the usual happenings of the time - including workers and a banana boat delivering its goods.

However, if you look near the edge of the boat you can spy a man in a white shirt with what appears to be a Mohawk-style haircut. A very unusual haircut for the time and possible proof of a time traveller? Who can say?

Film footage captured during the recording of Charlie Chaplin's 1928 silent film "The Circus" appears to show a lady dressed all in black, wearing a hat and walking around the set talking on her mobile phone.

The footage is a little iffy as is the idea that anyone could be talking on a mobile device in the 1920s, but it's certainly got some suggesting it might be proof time travellers are among us.

The ancient astronaut sculpture

In Salamanca, Spain, there's a cathedral with multiple sculptures carved into its sides. One such sculpture appears to show the likeness of a modern-day (or perhaps futuristic) astronaut.

Considering the cathedral's construction dates back to 1513, people have taken this as proof that time travellers made their way back to that time. However, the truth is the astronaut is merely a modern addition to the artwork carried out by Jerónimo García de Quiñones during renovations in 1992.

Time travelling celebrities

There's an interesting trend of people who closely resemble folks from a bygone era. This could just be a spooky coincidence, but maybe it's proof that time travel is possible.

Perhaps these celebrities are living a double life in another century. Here, Marxist-Leninist Revolutionary Leader Mahir Cayan who was born in 1946 and died in 1972 is shown to bear a striking resemblance to TV star Jimmy Fallon. Is Jimmy Fallon living a double life as a revolutionary communist? Seems hilariously unlikely.

A man and his mobile phone

Some claim that this oil painting by Pieter de Hooch, which was lovingly crafted in 1670 appears to show a young man holding his mobile phone. In an age where such a thing would probably have seen him burnt at the stake, this one is hard to believe.

A description of the image also suggests the young man is a messenger and that's a letter in his hand, not a phone, but it's still nice to let your imagination run wild once in a while. We've often wondered what it would be like to be able to travel back to simpler times to see what life was like for ourselves.

The Adidas trainers mummy

A couple of years ago, an ancient mummy was unearthed by archaeologists digging in Mongolia. At the time, it was suggested the funky-looking footwear she was wearing bore a striking resemblance to Adidas trainers. More evidence of a time traveller visiting ancient times? Investigation of the body dated it around 1,100 years old. That's one heck of a blast through the past.

However, further unearthing showed the woman was more likely to have been a Turkic seamstress which might explain the fresh kicks. She was found with an ancient clutch bag, a mirror, a comb, a knife and more. But no mobile phone.

The time surfer

Another image of an out-of-place individual that people have latched on to as proof that time travel is a reality.

This image dates back over 100 years and shows some smartly dressed Canadians sitting on the side of a hill.

On the left-hand side though, sits a young man in what appears to be a t-shirt and shorts with ruffled hair. He was quickly referred to as the surfing time traveller due to how unusual his attire is. Others have suggested people in the photo appear shocked by his appearance, even pointing out the woman on the right who seems to be gesturing in his direction. Again, this a bit of a stretch as would a time traveller really go through time dressed like that?

A visitor to wartime Reykjavík

This photograph apparently shows a scene from downtown Reykjavík in 1943.

In the heart of wartime, soldiers and sailors can be seen everywhere in the streets among civilians. The man circled though, appears to be on a mobile phone.

We've really got a theme going with these smartphone using time travellers. Who is he calling? And how? And if he is a time traveller, why is he not in Berlin trying to assassinate Hitler?

The dabbing WWII soldier

There's an apparent theme to these time traveller photos that not only includes smartphone users, but also people visiting the second world war.

In this image, a young soldier is seen dabbing, a dance move that became popular around 2014, but certainly wasn't known in wartime.

Of course, it turns out this photo isn't an image of a time traveller, but rather just an image of some actors from 2017's blockbuster Dunkirk . The fact that most of the soldiers are smiling should also be a bit of a giveaway with this one.

Greta Thunberg

In 2019, the internet discovered a photograph from 1898 which showed three children working at a gold mine in Canada's Yukon territory.

The image seemed to show a girl with an incredible likeness to the young climate activist Greta Thunberg. Does this make Thunberg a time traveller who's come through time to save the planet? Weird year for her to choose, but it's a nice idea.

A woman clutching a smartphone (1860)

The painting " The expected one " from 1860, by Ferdinand Georg Waldmüller appears to show a woman walking along a rough path, about to be accosted by an adoring young man clutching a pink flower.

A close look though and you'll see she appears to have her attention firmly glued to a modern smartphone. Is this woman actually a time traveller?

Vladimir Putin

A few years back, a number of images surfaced online that seemingly showed Russian President Vladimir Putin snapped over various decades without ageing. Either proof that he's a time traveller or perhaps just immortal?

If true, he's incredibly patriotic, with each image showing him serving his country in one way or another. Though it's more likely to just be a strong likeness.

The AI time traveller

Here's a time traveller with a difference. Stelfie the Time Traveller has been using AI to travel through time. Or at least to give the illusion of doing so.

This creative individual has been using Stable Diffusion to insert the likeness of a modern man into ancient civilisations including Egypt when the pyramids were being constructed, Rome with the centurions and the land of the dinosaurs . It's fun to imagine these as being real, though if you look closely they're clearly AI-generated. As this artificial intelligence improves we'll no doubt get even better images like this. Interestingly even the character taking the selfies isn't real here, but is also made using AI.

Apple Vision Pro User Guide

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Get live captions of spoken audio on Apple Vision Pro

With Live Captions, you can get a real-time transcription of spoken audio. Use Live Captions to more easily follow the audio in any app, such as FaceTime or Podcasts, and in live conversations around you.

Important: Live Captions is not available in all languages, countries, or regions. The accuracy of Live Captions may vary and shouldn’t be relied upon in high-risk or emergency situations.

Set up and customize Live Captions

Tap Appearance to customize the text, size, and color of the captions.

By default, live captions are shown across all apps. To get live captions only for certain apps, like FaceTime, turn them on below In-App Live Captions.

Use Live Captions

With Live Captions turned on, Apple Vision Pro automatically transcribes the spoken audio in apps—or from dialogue around you. You can do any of the following:

Make the transcription window bigger: Look at the corner of the window, then pinch and drag it to a new size. See Move, resize, and close app windows on Apple Vision Pro .