Re:Paradox-free time travel is theoretically possible
by yrimaxi on Thursday January 21, 2021 @03:03PM
(#25863490)
This explains absolutely nothing. You time travel back and kill your former self. Paradox. How to resolve? Determinism.
That’s just invalid.
“Knowing” here just referred to the magical force that will keep time travel suicide from happening. But without a magical force you’re even more stumped!
Re:Paradox-free time travel is theoretically possible
by d1sxeyes on Saturday January 23, 2021 @06:36AM
(#25881525)
You are still thinking as though someone can 'choose' to go back in time and kill themselves. Choice has no bearing on it. Either something happened, or it didn't.
It is still consistent that a cause is needed for an effect, so an effect cannot eliminate a cause.
You're just describing something that can't/doesn't happen. There are plenty of rules that describe things that can't or don't happen in space.
You wouldn't have any concerns with me saying it's impossible for me to go to the bathroom in my own house and when I walk out, I am in your house.
How does the bathroom door magically know which house I am in?
It's got nothing to do with 'knowing' anything, it's just that we experience life as a vivid playthrough of causes and effects that could never have started or ended any differently.
Now, you might not agree with that explanation, but it can't be precluded, and it solves all of your concerns above.