I use the same line of thought, but without any modeling. Suppose you could go back in time to a major decision in your life and make it over. But you arrive at

I use the same line of thought, but without any modeling. Suppose you could go back in time to a major decision in your life and make it over. But you arrive at that same point in time, with all of the same information you had, no new information about the future, with all of the same hormonal and biochemistry etc. Is there any way you could have chosen differently than what you did? I don't see how. Unless you want to introduce randomness, but that's also not choice.