@Amperage,
the terms cause, effect, determined, predetermined, determinism, free will and so on are all rationalist terms in the context of this discussion.
Suppose you go to a football match and sit down to watch the game. The person next to you asks 'who do you support?' and you answer "oh no one, i just enjoy the game". 'right, so you don't support either of these two teams, but which football team do you support?' .... you reply "i don't support any football team". 'so why are you here' - "i just enjoy the crowd and the colours and the athletes and the songs and the hot dogs .... everything". 'right. but why don't you support a football team?' ...... "i always like both sides i suppose". 'yeh, but why don't you support one and still like the rest?' ......
i get that vibe reading this thread. The football supporter (logic supporter) can't understand what the other person is doing there from what they are saying. The football watcher doesn't commit to the narrative necessary to be a football supporter.
The rationalist game with regard to cause, effect, free will and history has a relatively new thing to consider. Probability waves. Within the game they ask 'how can probability waves explain free will differently to classical cause and effect?' They conclude that it can't. The reason being that probability waves do not offer an explanation for free will any more than classical determinism. Therefore it doesn't exist.
So why would anyone who enjoys rationalism turn up for the game not wearing a scarf for one of the rationalist philosophies that denies free will? For exactly the same reason that the football watcher turned up. You don't have to be a supporter.
QM does not offer an explanation for free will, but it does offer a gap for a force of will outside physics to operate ...... for someone who takes rationality seriously but who is not a
full on supporter that is. It does no such thing for those that are supporters. Nevertheless that gap has been the bane of many a prominent scientist who is a full on supporter. They are willing to recognise that if there are areas of a particular knowledge game and power of prediction that are
fundamentally reduced to statistics, then it means that such a knowledge game is incomplete. That allows for all kinds of other 'games' to fill in the gaps.
Free will is
necessarily not understandable within the language game of scientific rationality, except as non existent. The reason is that rationality is 'post event' analysis leading to 'pre event' prediction. Free will is by definition inherent within events as they take place. It is in the 'now'. You won't understand it by 'post event' scientific analysis. All you could possibly do is find 'its illusion' (rationalist supporter) or possible trace (rationalist watcher) by such a method.