Physics_Math_Philosophy
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The Simple Proof Against Time Travel

1. David exists at time T = 2pm PST August 1, 2021.
2. David travels back in time to before time T.
3. Now there is the original David-O and a "copy" David-C.
4. David-C goes up to David-O and kills him.
5. Therefore, David-O is not alive at time 2pm PST August 1, 2021.
6. Therefore, David-O does not exist at time T.
7. And therefore, David-O does not travel back in time at all.

The Theory of Time Travel leads to a logical contradiction. Therefore, it is a bad and invalid theory.

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