Reply to post: Re: The glaring philosophical issues of time travel

I'll be back (and forward): Hollywood's time travel tribulations

Hans 1 Silver badge

Re: The glaring philosophical issues of time travel

Well, I believe we can travel into the future, it's what we do on a daily basis, but we cannot travel back into the past - the main reason being universal uniqueness of matter. The first thing somebody with a time machine that could go back and forth would do, would be to get all gold/diamond/whatever from the future. Imagine, you get your car from tomorrow at noon, you would now have two same cars, made of exactly the same matter - what happens when you reach noon the next day. Are both gone ?

Time travel into the past makes absolutely no sense, in physics, it violates the First Postulate of the principle of relativity (You can only be in one spot in a four dimensional world "space/time", at any given time). I thought we had a lot of physics experts on here, where are they when you need them.

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