I've been obsessed with time travel narratives ever since I was a kid, watching Back to the Future and Bill & Ted's Excellent Adventure. But it's an extraordinarily tricky trope to really pull off, and so writers will often avoid it given the thorniness of its philosophical implications.
Naturally, what inspired this post is my recent watchthrough (I'm one episode into the third and final season) of Dark, Netflix's teutonic time travel television show. One of my favorite movies is 12 Monkeys, which is itself removed from the giddiness of Back to the Future or the exploits of Theodore Logan and William S. Preston. Fringe, the less popular but ultimately more satisfying Bad Robot project that followed Lost, delved into its own time-travel and alternate-universes (and alternate history on top of that - as a separate thing from alternate universes) in a way that was ultimately quite bittersweet at best.
I was thinking, though, about how things seem to get more dire and serious the more seriously you take the rules of time travel.
Of course, the "rules" of time travel are little more than our own theories on a hypothetical scenario. In the massive finale to what had come of the MCU so far (obviously they're not stopping the movies, but the "first era" of them is firmly over,) Avengers Endgame, they have fun by making fun of people who claim to understand how time travel works because of the movies they've seen.
Einstein showed us (though I leave it to the reader to decide if you understand it) that time and space are related, and that our terrestrial notions of things like simultaneity are actually just false on large scales - depending on your reference point, events occurring in the universe don't have to happen in the same order they do if you're standing somewhere else, as long as there's no causal relationship between those events.
Basically, the universe is profoundly weirder than it looks from a human perspective. A great analogy comes, if I remember correctly, from Stephen Hawking's A Brief History of Time, where he explains that a lion understands Newtonian physics on an instinctive level, because it helps her hunt her prey. But none of us have an innate understanding of relativity, or of quantum physics, because it's just not relevant at the scale at which our brains evolved.
I don't know if time travel as conceived of in science fiction is possible. It seems likely it isn't, if for the very fact that nowhere in history do we have any confirmed examples of travelers arriving from the future. It's a lack of evidence, rather than evidence against, but it leaves the likelihood low.
And yet, there's something very compelling about the notion of returning to earlier times. Indeed, it's rare (though not unheard of) for a time travel narrative to include multiple futures at different points. Typically, we see various points in history - in Dark, for example, we get 1986, 1953, 1921, and 1888 - but we tend to just get one view of the future - 2052 in Dark's case.
Narratively, the future tends to be terrible, and this sets up a motivation for our protagonist to fix it.
But many narratives avoid the future entirely. From a writer's perspective, this can make things easier because you don't have to worry about extrapolating what will occur any number of years, decades, centuries from now (for example, in our current state, I wonder if a decade from now America will be a fascistic hellscape or will have grown and fixed some of the problems that our current "leadership" has caused.)
As I see it, time travel narratives often come in two scales - the personal and the historical. We can actually look to Bill and Ted and Back to the Future as examples for these.
Bill and Ted ludicrously decide to kidnap various historical figures so that they can pass their history class and go on to be the founders of a future utopia (one of the rare cases of a good future in a time travel story.)
Despite their meddling seeming to potentially change the course of history, the narrative is more about the amusing fish-out-of-water nature both of these two doofy teens from San Dimas in other historical eras as well as these figures of history going to a (then-) modern mall before safely being plopped back in their own times, apparently never thinking to share their memory of this experience with anyone.
Time travel of this historical scale can lead to major repercussions - consider the alternate history book the Guns of the South (written by my dad's college roommate, actually) in which apartheidists from 1980s South Africa go back in time and give the Confederates AK-47s so that they'll win the war and not pressure South Africa to end apartheid. The entire history of the US is changed, but the time travel element of this story (as far as I understand) is more of a jumping-off point than an ongoing element of the story.
Either way, the stakes are less personal than global in this case.
Back to the Future, however, gives us a narrower, personal story. Marty McFly goes back to the 50s and inadvertently prevents his parents from getting together. Not only is his own existence at stake (though by what mechanism the ticking clock is ticking is, I think intentionally, a question that remains ignored) but he's basically creating the grandfather paradox.
But Back to the Future is far from depressing - it's a rollicking good time and a lot of fun (though as many have pointed out, how 1980s is it that the movie basically has a white kid invent rock and roll? I know it's more complicated than that, but still). So what of my thesis?
Dark is, perhaps in true German fashion, pretty depressing (they warn you about it in the title).
While the mechanism of the plot becomes more and more the show's focus over time - you could watch the first episode and not realize that it was even a time-travel show, but by the point I'm at, that's the whole thing - there is some thematic poignancy to be found in the use of time travel.
The 33-year cycle that the show (at least at first) uses to separate its time periods is sort of the perfect period of time for human nostalgia. When we are introduced to the world in 2019 (the show started in 2017, setting itself slightly in the future, which starts to look inaccurate once people are in the middle of 2020 with no masks on) we have a generation of adults with teenaged kids, but as we hop back to 1986 (my birth year, which is sort of a trip for me watching the show) we see those very same adults as the teenagers they once were.
Filled with trauma or peaceful happiness, our childhoods are crucially important to the way that we identify ourselves. Upsetting the way that works is a way to make a person feel untethered to their own self. (BIG SPOILER FOR SEASON ONE) So when one of our main characters discovers that his late father was actually his friend's little brother, having been lost in the 80s and getting back to 2019 the long way, it throws everything he thought he knew about himself into turmoil (not to mention the fact that the friend he's in love with is actually his aunt).
Invariably, the world when we are young appears simpler than it turns out to be - even a precocious kid who prides themself on having a nuanced view of the world will find that there are deeper problems and deeper complexities as they grow older (hell, the same is true for adults. I don't think I was quite aware how deeply rotten our police are as an institution until this year).
There's something melancholy about the idea of going back to the past, even as we yearn to do so. For example, I have a lot of nostalgia for the 1990s - a sort of triumphant period for our country, the decade after the Cold War ended but before 9/11, when it seemed obvious that progress would continue unabated (we had three Star Trek shows during that time, folks). Coming back as an adult would force me to confront some of the less pleasant aspects of that time, including rolling back the progress we've made as a culture in certain aspects, such as in fighting homophobia.
I also think that we sometimes forget the hardships we endured. Even if I have nostalgia for the 90s, I also remember that as a kid I was pretty unhappy a lot, feeling picked on in school and having a hard time establishing a real identity for myself.
Indeed, there might be bad things that we don't fully remember about that time, like parents who, over time, learned to be kinder and more empathetic, being reset to old ways.
And here is where the speculative-fiction type of existential angst - the fear of erasing yourself from the timeline, for example - meets a more real, more real-life version. By visiting the past, would we not then be forced to confront the notion that the past we imagined we came from was not as we remember it? Sure, we might not discover our father to be the gawky kid who goes to the same school we do, but in a similar way, we might find that the memory around which we built our identity is a false one.
There's a thing I heard about neurology, which is that every time we access a memory in our brains, we rewire the neural connections that are the recording of that memory, so each time we think of it, we are rewriting it. The consequence, then, is that the more we remember something, the less likely our memory is accurate. And if that's not a mindfuck, I don't know what is.
The truth is that the memories we have are only a copy that exists in the present. Time travel, then, suggests not simply recalling what it was like to be there, but to have the ability to form new memories from the same "master copy," aka actual reality.
So we have both an extremely appealing possibility (before we even get into the idea of fixing things that "went wrong" by changing the course of time) but also a terrifying notion that we might reveal our own memories to be false, the foundation of our identities and our sense of reality shown to be faulty.
Again, this is before we even get into the idea of whether time is a fixed course or if it can be bent (and the paradoxes that occur as a result.) In 2017, my mother died of cancer and a friend from college who was very important to me killed herself. If I had the capability, I'd try to prevent either from occurring (I'd hope that I could just go to my mom a few years earlier and say "hey, it's future me, get a hysterectomy asap") and obviously I'd also feel some responsibility to prevent larger disasters that go beyond my personal life's scope. And the potential obstacles to such tactics - an unchangeable timeline in which these tragic events are now simply foreknown - or just the unseen consequences of meddling with how things happen - worse thing happening despite good intentions - have the potential for angst.
Dark deals with all of these things.