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Re: Time Travel - should we?
Think of time like a switch... If we take your original example of a person discovering that a plane crash was about to happen and tries to prevent it.
Well, the more that person tries to prevent the plane from crashing the more he affects the future time line, in which case the person who came back to prevent the plane crash never came in the first place and thefore the crash happened anyway bacuase he was unable to prevent it.
Why? What actually happens is that the person who comes back to try to prevent the crash from happening starts to forget about the crash the more he tries to prevent it form happening and therefore the crash still happens but the traveller is none the wiser as he has already forgot all about it.
Which probably means he's standing around somewhere right now wondering what the hell he's doing.
You do get that feeling too sometimes dont you - you know - what he hell did i come in this room for etc...
Thats because you were going to prevent something from happenign that you had been warned about - but forgot all about it and it happened anyway.
Tara!
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