As a scientist (albeit, not a physicist) I sometimes ask myself “is time travel possible?”. The answer is, clearly, I have no idea. Perhaps it is.
There are numerous time travel theories. On one hand if it were possible to journey backwards in time, would we not be surrounded by millions of people from countless years into the distant future who have come to view us? Then again, why should they visit today when they have a virtually unlimited number of eras to visit instead.
Besides, 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 complex connection between cause and effect, past and future.
One very good example is the movie Timecrimes. Although a large percentage of it is predictable 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 begins asking questions that aren’t often explored: what is cause and what is effect? It does so in a very convincing and exciting way, and when I left the movie theater I couldn’t help but wonder why so few films deal with those interesting issues.
In most films that deal with time travel one of the following scenarios may occur:
(a) The protagonist may travel back in time and alter something and create a paradox (these stories often contradict themselves almost every single time).
(b) The protagonist may travel back in time only to find out he can’t change anything - he is a part of history.
(c) The hero may go back in time only to explore an historical era (in a sense, this needn’t be a sci-fi film).
(d) The protagonist may travel 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 thought provoking alternatives. Until they are resolved by science, I will enjoy whatever movies and books are created about the subject despite any (obvious) flaws.
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