ATS1835 Lecture Notes - Lecture 1: Goback

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It is logically impossible that we can travel in time but some people think that it is possible. It is a contradiction to claim that any of these could actually happen given the laws of nature of our universe. In order to be physically possible it needs to be logically possible. If something is logically impossible then it is impossible in every other sense. In physics there are papers that say it may be physically possible for time travel to be possible. Loosely our question is if time travel is logically possible to travel ot the past or futu re faster than we normally do. Arguments for the logical impossibility of time travel: grandfather paradox. If you killed your grandfather before you were born, then the following would both be true: You exists (there you are, killing your grandfather) You do not exist (because you killed your grandfather before you were born: but that is a contradiction.

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