"I feel a deeper understanding of the theorem shows rather that it constrains what hidden variables could exist and that the conventional understanding is impos

"I feel a deeper understanding of the theorem shows rather that it constrains what hidden variables could exist and that the conventional understanding is impossible, not that hidden variables in all senses are completely impossible." That was my conclusion too: I've been meaning to write about it, but time constraints keep getting in the way. The thing I like about the Free Will theorem is that it highlights the importance of the experimenter's choice, as opposed to in Bell's theorem, where demonstrations mostly take this as given. There's room for 'hidden variables' of a certain type in the decision making process of the experimenter and the state and process of the measurement apparatus. Having blind faith that important state is located there is perhaps unwise, and certainly it is hard to demonstrate, but assuming that the experimenters are entirely un-entangled and uninfluenced causally, that there's no interesting modified state in the experimenters or measurement apparatus at all, would, to my mind, also be a mistake.