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Still, there is no paradoxon. You can not go back and kill your father. The reason is that when you go back with the above method, you also need to move in space - so you end up at a position so far from you father's location that you'd need a gun with a bullet faster than light to kill him. And this, according to relativity theory, is impossible.



What if it was a circular motion, wouldn't you then be closer to your father?