Aidan McDonald

“I mentioned earlier that our sense of free will is very much about feeling we ‘could have done differently’. This counterfactual aspect of the experience of volition is particularly important for its future-oriented function. The feeling that I could have done differently does not mean that I actually could have done differently. Rather, the phenomenology of alternative possibilities is useful because in a future similar, but not identical, situation I might indeed do differently. If every circumstance is indeed identical on Tuesday as on Monday, then I can do no differently on Tuesday than on Monday. But this will never be the case. The physical world does not duplicate itself from day to day, not even from millisecond to millisecond. At the very least, the circumstances of my brain will have changed, because I’ve had an experience of volition on Monday and paid attention to its consequences. This, by itself, is enough to affect how my brain can control my many degrees of freedom when setting out to work again on Tuesday.‡ The usefulness of feeling ‘I could have done otherwise’ is that, next time, you might.”
― Anil Seth, Being You: A New Science of Consciousness