There is a common complaint that I’ve heard by more than one free will believer: when asked to think about “if all events are caused (deterministic) and if we could bring back time to some point before a decision was made, could the person have decided differently?”, some people complain that “well we can’t do this”. They note that it is impossible to rewind time or to travel in time to before the decision. They note that we “cannot test this”.

This response, however, is one that misses the p...