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I'm partial to the idea that time travelers need a "gate" to arrive at, and until we have that, no traveling to the past. However the universe really likes avoi

I'm partial to the idea that time travelers need a "gate" to arrive at, and until we have that, no traveling to the past. However the universe really likes avoiding being forced to compute a paradox, so it may well be many timelines.

01HNNWZ0MV43FF 1y ago
I loved that about the film Tenet. It's very grounded compared to say Terminator (not that I don't like Terminator)
- Melatonic 1y ago
  Same Dark Matter (the TV show) also does this very well (plus multiverses)
- JKCalhoun 1y ago
  "Primer" is arguably the best time travel film made/written.
  - thedrexster 1y ago
    this!!
ryandvm 1y ago
Yeah, time travel probably isn't possible, but if it is, limiting the time traveler to only being able to go back to when the machine was invented at least solves the "why haven't we met a time traveler" problem.
- selcuka 1y ago
  It could also solve the "where will the extra atoms to instantiate a second copy of yourself come from?" problem if the machine uses some kind of filament to 3d-print the traveller.
  - warrenm 1y ago
    sounds akin to how the transporter works in Star Trek
croon 1y ago
Ted Chiang's "The Merchant and the Alchemist's Gate" does this pretty well. It's a fun read (and short).