If we know the state of a rolling ball (position, direction, velocity, mass, and coefficient of friction) we can precisely predict where it will be at any given time from now. We can do this with a billion balls in a really big lab if we have enough time or do it with a computer.
If every thought and choice you make is from a chain of cause and effect events and people have no power to influence their thoughts, then theoretically we can predict someone's next thought the same way we can predict the state of a billion balls if we can measure the state of their brain and we know how the brain works.
If a person is instructed to always choose the opposite choice of the one he knows he will make in the future, and something instantly calculates and tells him what decision he will make next, then if A is his next decision he will choose Z. But if Z is his next decision then A could not be his next decision because Z is his next decision. If A could not be his next decision then his next decision must be Z. If Z is his next decision he will choose A. But if A is his next decision then Z could not be his next decision because A is his next decision. If Z could not be his next decision then his next decision must be A. If A is his next decision he will choose Z. But if Z is his next decision then A could not be his next decision because Z is his next decision. If A could not be his next decision then his next decision must be Z...
<-----internets button is over there thx.
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