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The Paradox of Time Travel
The past pulls at us. We have appointments there. But it's just a beginning because as soon as people started imagining actual time travel into the past they came face to face with inescapable paradoxes. Here's a time here's an example of a time travel time travel or meeting themselves. On the right I'm sure many of you recognize Joseph Gordon Leveth. This is the 2012 movie looper by Ryan Johnson. Joe is a sort of time traveling hitman and on the left Bruce Willis is also Joe only older and wiser so they're meeting for the first time. Young Joe has a few questions as you can imagine and old Joe says I don't want to talk about