In class, our professor discussed the impossibility of time travel. He stated

In class, our professor discussed the impossibility of time travel. He stated

In class, our professor discussed the impossibility of time travel. He stated that if in the future, machines are made to travel back into time, then we would be seeing people from the future right now. His argument ended there but would this be true? Is this a valid argument to disprove the possibility of time traveling in the future?

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