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pestapokalypse t1_j1cw4mi wrote

For starters, it’s not possible and never will be possible. If it were, what kind of physical mechanism would cause a hypothetical traveler to be invisible and intangible, but also allow them to observe? Unless we’re talking about multi-dimensional stuff, but that’s going far beyond the initial hypothetical.

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Perseverxnce OP t1_j1cwa4b wrote

What if the only mechanism that allows us to travel to the past is this though, wouldn’t it solve the paradoxes?

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pestapokalypse t1_j1cx9bg wrote

Hypothetically, I guess? But it’s not much of a solution if there is nothing to explain it physically or mathematically. You’d have a better shot arguing divergent timeline theory than basically ghosts.

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muffinyipps13 t1_j1cxzgm wrote

Might be a reach but what about memory.

In memory we can be an invisible and intangible observer. If we really put a lot of effort into a moment, can't that memory almost be like a picture, even a video ?

This is the beginning of figuring out how to access a part of the timeline we are no longer apart of

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