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Originally Posted by adfaffasfd
Time travel is NOT possible.
I've said it before and I'll say it again
If it were possible (as we think of it anyway), then we would have been visited by travelers from the future; or, if the creator of this thread is right and the merging of two times is catastrophic, then we would already have experienced this catastrophe, no?
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There are several possibilites that could account for the seeming lack of visitors from the future.
1. Time travel is possible but not practical (i.e. takes the total energy output of several Sol-type stars to do).
2. Time travel is possible, but no one ever came to our time for whatever reason.
3. Time travel to our time has occured, but we didn't notice it for whatever reason.
The first reason is the most probable, IMHO, but the latter two are quite intruiguing as well. They both lend themselves to "Time Patrol" like scenarios such as the ones that Poul Anderson has explored in his similarly titled series of short stories.