What we talk about when we talk about time travel: going back to kill Hitler, Back To The Future, treading on butterflies causing irreparable damage to history, Doctor Who, whether or not it’s ethical to use it to cheat on the lottery or sports gambling or whatever, Bill & Ted’s Excellent Adventure. What we don’t talk about when we talk about time travel: whether it actually exists. Or will exist. Or has existed.
The idea of being able to travel backwards or forwards through history has appeared in countless forms through pop culture, conversation and daydreams for ages, but how come we don’t discuss whether it’ll actually ever be real?
Is the the idea of time travel so beyond the realms of possibility that we don’t even consider that it could be real? Well, we’re here with good news! Not from the future, sadly, just in the grimly predictable present. A grimly predictable present that includes quantum physics, Higgs Bosons and other science-y things we don’t quite understand but apparently have something to do with a conceivable way for us to travel through time.
No less a genius than Stephen Hawking spent years looking for a reason that time travel couldn’t exist, only to find the concept didn’t contravene any laws of physics, eventually admitting “time travel may be possible, but it is not practical”.
Plus there’s that history of time travel in our culture has frequently strayed into the non-fiction – so long as you’re inclined to believe the possible crackpots that are discussing it – all of which adds up to some pretty compelling pieces of evidence that prove time travel is real.