We watched Déjà Vu (Wikipedia/IMDB) tonight – and I’d have to say it’s one of the best movies I’ve seen in awhile. It’s a science fiction crime thriller, which is my favourite genre of film. I always spend ages afterwards reading about the movie and about the concepts contained in it. For me, it gives somewhat of a glimpse into what technologies may be available to us in the future – the concept of using these technologies to fight crime excites me.
I’ve just spent a substantial amount of time reading about time travel, wormholes, and predestination paradoxes.
Time travel is theoretically impossible, right? If you were to go back and time and kill your father before he met your mother, you wouldn’t exist. Therefore, you wouldn’t have been able to go back in time and kill your father, thus your father wouldn’t have been killed and you would have existed, therefore being able to go back in time and kill him (the grandfather paradox).
If time travel is possible in the future, then perhaps it will only be possible in a segment of time that needs to be warped in the right shape. If we can’t create a segment like this until the future, then travel into the past (past when we were able to develop this segment) would be impossible.
The whole idea of time travel seems very sci-fi and impossible to imagine. But some part of me says that one day, we’ll discover a way to do it. Just think, two hundred years ago, the concept of a small device emitting an invisible ray of light to instruct another device 10 metres away to perform a particular action was probably thought impossible. Yet we use the remote control every day now without a second thought.
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