So, can it be affirmatively asserted that QM affirms the concept of having a 'free will'? — Posty McPostface
The freewill problem arose out of the discovery of Newtonian determinism and its LaPlacean implications. So quantum indeterminism definitely challenges the Newtonian/LaPlacean paradigm that gave the freewill debate all its sociological charge.
Noting of course that it was essentially a theistic issue anyway, as mind or spirit - representing organismic notions of autonomy or agency - were being opposed to science's mechanistic view of nature.
But anyway. QM demonstrates that nature is essentially spontaneous. However it also demonstrates that this spontaneity is subject to constraints. Randomness or unpredictability always occurs in a context that is imposing some degree of limitation.
So the deeper message of QM is not that nature is random and therefore nakedly free. It is that nature is the result of persisting constraints on such randomness. Thus if we are modelling something human like freewill, we should understand it in the same fashion - as the suppression of the unpredictable to the degree that it matters.
In that light, it becomes natural that individual human choices occur in socially and environmentally pragmatic contexts. It takes those contexts for individual action to have a definite meaning, and not merely be random and meaningless.
Now as a matter of freewill, you could choose not to wear matching socks. That might serve some sartorial purpose - one that means something, sends a definite signal to your social context. Or you might arrive at the same position by simply getting dressed in the dark and not checking. And that kind of sloppiness might also signal something to your social context.
So freewill is a term that targets the kind of action which is thoughtful and purposeful as a considered response within the constraints of some larger social or environmental context. It says being an "individual" is about having enough autonomy to go with the flow, or go against the flow. But that counterfactuality is itself wholly dependent on some understanding of context.
If you wear unmatched socks deliberately, you seek to signal your allegiance to some higher sartorial purpose. You definitely don't want to be mistaken for an actual, dress in the dark, rando. You most probably want to be granted the status of being such an autonomous being that you don't need to care that you might look like a rando. A complex game of social double bluff.
[This example sticks in my mind because David Chalmers chose to wear one red sock, one blue sock, when he gave his first big audience talk on the explanatory gap/quantum consciousness schtick. And he is one socially crafty dude.]
Moreover, human free choice would not be made possible by neuronal randomness in any case (and all the evidence so far seems to be against it) because no conscious human choice could ever operate to refashion neural networks directly at the neuronal level. Neural networks change through experience, not through will. — Heidi Ravven
This is still seeking some kind of mechanistic account - the "experiential" weighting of syntaptic connects that determine an output state.
Neural patterns need to seen as representing constraining contexts. They represent the information that limits the otherwise spastic operation of the body's many degrees of freedom.
This constraints-based approach to autonomy is what neuroscience finds when it studies the development of skilled action.
A beginner at a sport sends a confusion of control messages to their muscles. The result is a jerky and poorly timed action as the beginner winds up trying to push and pull at the same time. Skilled athletes have very quiet muscles when recorded with EEG. They are maximally efficient in limiting the spasticity or randomness in what their body would otherwise do.
It is the same kind of story when recording the brains of babies as they learn to make perceptual sense of their world. It is all about learning meaningful neural constraint. At first, a neuron in the visual pathway will fire wildly in response to pretty much anything. But quickly it learns to limit its firing to some very precise kind of stimulus - like a line slanted at some particular angle. It learns to shut up the rest of the time.
So brains - as neural networks - arrive at specific behavioural choices by evolving meaningful states of constraint.
You as an individual could be doing anything at any particular moment - and what that would look like is the chaos of an epileptic fit. Luckily neural networks do learn from experience. They form useful interpretive habits. They form contexts that constrain the chaos to a pragmatic minimum.
Randomness may still lurk. In nature, spontaneity is irreducible - as QM proves. But agency is about being able to suppress degrees of freedom to the point where any remaining variety is not a problem for the achieving of a goal. The irreducible spontaneity - the remaining quiver in the dart thrower's hand - is still suppressed enough that the goals are met. The bullseye gets hit often enough.