posted on Mar, 6 2006 @ 06:58 AM
Well, I have two reasons that I give for why Time Travel is either impossible, or irrelevant.
Reason 1: Straight Line theory leads to Paradox
If you consider Time to be a straight 1-dimensional line, then you can go forward and backwards on it. In this universe if you travel back in time and
change something, everything ahead of you will change.
The problem is though that FATE exists to stop you. If you try to change something, then you would be changing the circumstances under which you left,
and may never have left at all. Grandfather Paradox: You go back in time and kill your Grandfather. If you killed your Grandfather though, then you
should never have existed to go back and kill your Grandfather. Therefore, your Grandfather should exist - but that also allows you to exist and go
back and kill him again.
Thus, something must happen where, if you go back in time, FATE will prevent you from changing anything in time. Whatever you do back in time, you
already have done - it's just that it didn't matter.
Reason 2: Time is a cone leads to no paradox, but nothing useful.
In this reason, time can be considered a cone. At any quantum event and at any decision, all the different possible actions occur - and a seperate
universe exists for each. If you go back in time in this universe you can change things, and it won't result in a paradox - since there's another
universe (the one you're from) where you didn't change things.
However, changing things then makes it so that your universe still remains unchanged, and so upon returning to YOUR universe, nothing will be
However, you could travel forward back to your time in this ALTERNATE universe to see the fruits of your labour - but other quantum changes might
happen along the way (different decisions made by other people, and so on - since, as it's a different universe, different "spin-off" universes
will continue to form from the quantum events of that universe).
This means that you can't be sure that changing the past will change the future the way you want it to.
In the end it means that time travel is, from a "changing history" perspective, pointless - since you can't change your history, no matter what.
This means that conspiracies shouldn't be formed around Time Travel because it wouldn't make sense.
So, I'm not saying you can't time travel - just that doing so is useless.
Oh, and as for people aging slower in space - that happens all the time, not just in space. Any movement through space causes a distortion in time. If
you walk forward and your friend beside you stands still then you'll age slower than your friend. A baseball thrown forwards looks like it gains
mass, whilst time slows down for it, as it hurdles towards a catcher's glove.
It's happening all the time my friend - but I don't think it's uses are that great except at nearly light-speed, and for travelling to distant