(06/02/2024, 09:16)FantasticMR Wrote:
One problem with all of this though, it requires magic.
If we wanted to view our past, let's say 1000 years ago, we would have to travel 1000 light years away in an instance. Even if we could travel at the speed of light, by the time we get 1000 light years away to use a sci-fi telescope to view Earth, we would actually just be viewing Earth at the moment we left because we travelled with the light. We would need a way of traveling faster than light or teleportation, which according to general relativity, accelerating anything with mass past the speed of light is impossible.
Viewing the future is silly as well. Yeah we could view the future if we got a rocket and orbited a black hole for x amount of time, but you would be stuck in the future and you would have no way of telling people in the past their future. Even in this case you wouldn't actually be "viewing" the future, the world around your rocket would simply be experiencing time at an accelerated rate, you would have put the universe in fast forward mode. Technically it's still only the present.