Some Ideas On The Possibility Of Time Travel Being Possible
As a scientist (though not a physicist) I often ask myself "is time travel possible?". The answer is, obviously, I don't know. Maybe it is.
There are numerous time travel theories. On one hand if it were possible to journey in time, would we not be surrounded by thousands of people from many years into the far future who have come to view us? Then again, why should they come this year when they have a virtually unlimited number of eras to visit instead.
Regardless, maybe they are in fact here? Maybe it is possible to visit us, but there are limitations? Time travel movies often toy with these concepts, with the muddled link between cause and effect, past and future.
One great example is the film Timecrimes. Although a large portion of it is unsurprising and can be said to repeat the standard time travel genre, at some point during the middle of the movie it breaks from that and starts asking questions that aren't often explored: what is cause and what is effect? It does so in a very effective and mesmerizing way, and when I left the cinema I couldn't help but wonder why so few movies deal with those fascinating issues.
In most films that are about time travel one of the following scenarios may occur:
(a) The protagonist may travel back in time and change something and create a paradox (these stories often contradict themselves almost every single time).
(b) The protagonist may travel back in time only to discover he can't alter anything - he is a part of history.
(c) The hero may journey back in time only to investigate an historical era (in a sense, this needn't be a sci-fi movie).
(d) The hero may journey to the future - in many ways this is not a time travel movie but rather a futuristic film (think 'Buck Rogers' - an astronaut gets frozen for 500 years and wakes up in the far future).
All these are interesting alternatives. Until they are resolved by science, I will enjoy whatever movies and books are created about the subject despite any (major) flaws.
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