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What is your favorite paradox or conundrum? I am partial to can god kill god? (lemmy.world)

submitted 7 months ago* (last edited 7 months ago) by [email protected] to c/[email protected]

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The monotheistic all powerful one.

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[–] [email protected] 7 points 7 months ago (6 children)

Assuming time travel exists: is it possible to alter the past?

If an event occurs, and you decide to travel back in time to change/prevent that event: It has no longer occurred in the way that caused you to want to change it; thus you never travel back to change it, and it does occur...

[–] [email protected] 4 points 7 months ago (3 children)

I think that just shows that time travel doesn't exist.

[–] [email protected] 5 points 7 months ago (2 children)

Perhaps. Unless you consider multiverse theory: The idea that the act of traveling to the past splits the timeline into two realities. One containing the original (to your perspective) timeline with the event(s) that caused you to travel back, and a second where you've arrived in the past to alter those events and the results there of.

Not sure I believe it, but it's a theory none the less.

Or maybe it's only possible to travel forward in time. Closer to our current understanding of the universe.

[–] [email protected] 1 points 7 months ago

The multiverse conception of time travel is nice and fine for fiction, but in reality, if you think about what such a time machine would have to do, it would have to create an entire new universe, with all precise details exactly in place, and it would have to have a lower entropy than your origin reality. Good luck building such a machine

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