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Time Travel Twists

29 October, 2007

tardis.jpgRyan from 14 Giants has posted recently about an article he found on time travel paradoxes. The article basically states that the old paradoxical problem of killing your father before you were born, thus preventing your own birth, is according to a new model, no longer possible.

The article says:

“Researchers speculate that time travel can occur within a kind of feedback loop where backwards movement is possible, but only in a way that is “complementary” to the present. In other words, you can pop back in time and have a look around, but you cannot do anything that will alter the present you left behind.

The new model, which uses the laws of quantum mechanics, gets rid of the famous paradox surrounding time travel.”

So, no more popping back to Mr & Mrs Hitler and suggesting that an early night isn’t a good idea!

The article goes on to say:

Quantum behaviour is governed by probabilities. Before something has actually been observed, there are a number of possibilities regarding its state. But once its state has been measured those possibilities shrink to one – uncertainty is eliminated. So, if you know the present, you cannot change it. If, for example, you know your father is alive today, the laws of the quantum universe state that there is no possibility of him being killed in the past.

It is as if, in some strange way, the present takes account of all the possible routes back into the past and, because your father is certainly alive, none of the routes back can possibly lead to his death.

Iteresting stuff, there are those who postulate that if time travel were possible, then why are we not seeing evidence of time travellers here and now? There are those who say, why would they come here at this time? there are more interesting things to observe in history such as the Big Bang, the anhilation of Pompeii, the deep impact event that started the extinction of the dinosaurs, Ancient Egypt, the fall of the Roman Empire, Who shot JFK? was Marylin Monroe murdered? or indeed, was Diana’s crash deliberate?

In any event, sometimes the theory is more interesting than the reality and in the case of time travel, sometimes fiction isn’t as strange as the truth. As with most mysteries in this world, only time will tell.

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