RE: Does the Law of Conservation of Matter/Energy Disallow Time Travel?
March 22, 2016 at 1:17 pm
(March 22, 2016 at 10:06 am)Brian37 Wrote: I don't see right now how the si fi stuff of say going back and killing Hitler happening though. You are still talking about the problem of complexity at a quantum level and energy input vs output problems.Exactly. The first problem is that we don't know that time travel into the past is even possible. So far, it looks extremely unlikely.
Then, even if it is possible, we don't know that as a species we'll be around long enough to develop the tech for it. That's something Kaku keeps mentioning... If time travel is possible, no one has come from the future to tell us so, which looks pretty bleak.
The thing I do like is the "philosophy" about past time travel. Out of all the schools of thought, the one I tend to like the most for no particular reason (and for the life of me I can't remember what it's called
), is the idea that the past's history already includes people going back to try and change it. Like with Hitler, his history is "complete", and any attempt to travel back and kill him is already part of that history.
