Wow, the size of the post, you have been working. I've got no hope of getting through all that in the time that I have.
I figured that if you were going to throw Gazzaniga at me, I had better go over the notes I had taken while reading his book.
Choosing is choosing. Selection does not necessarily equate to free will. 'Free will' is not necessary as an explanation for what is essentially a matter of information processing.
Right. The notion of free will is not intended to explain how the brain works.
'Free will' is usually applied to describe whether the person was free to decide for themselves or not. Based upon their control of their choice of action, the person is either held responsible for their actions, OR, someone or something else is held responsible.
In matters of free will and responsibility, we don't really need the details of how the brain works, except when the brain is not working normally. But the person, specifically their normally functioning brain, chooses what they will do. We empirically observe people making choices, so we know that this is not an illusion. Any illusions the person may have as to how their choices came about, that their brain constructs for them while modeling the self, is irrelevant to the notion of free will. All that society cares about is whether their normal adult brain decided to perform the act or not. When that is the case, society holds them responsible for those actions.
Whether the decision was calculated unconsciously and then passed to consciousness as reportable experience, or whether consciousness was informed by the more unconscious processes more frequently during the process of deliberation, is not a significant problem. As long as conscious intent was present at the time of the action, the person is held responsible. How the brain managed to form that conscious intent is a matter for neuroscience, not jurisprudence. Jurisprudence only cares about whether the brain was functioning abnormally, in a way that could reasonably be said to remove the person's normal control of their actions.
The same is true for the notion of free will outside of the legal system. The person is held responsible for what they deliberately chose to do. This may be a good thing, something worthy of praise to encourage others to copy that behavior. Or, if it is a bad thing, it may be worthy of blame, to discourage others from copying it.
A system that has the capacity to process information and categorize has the ability to select an option based on a set of criteria.
And that is what we call "choosing".
It is the state of the processor and the given criteria that determines the option that is taken.
Of course. Choosing is a deterministic function. At the macro description level, we speak of the person's goals and reasons, their thoughts and feelings, as the reliable causes of their selecting the option. And thus we retain the notion of reliable causation at the macro level.
The outcome is not being willed, freely willed or chosen in the sense that an alternate action could have been possible.
You're still dismissing the role of volition and intention (synonyms for will) which keeps the brain motivated and directed to complete a specific task. It is this intention that moves the brain to enter the choosing operation and see it through to completion. Processing the menu, and deriving from it a single dinner order, takes
work. The work must be motivated and directed by something, otherwise we would simply sit there staring at the menu forever. The brain
attends to the work at hand, ignoring other stimuli until the work is complete. People who are unable to do this are said to have an Attention Deficit Disorder, which makes it difficult for them to concentrate on the work at hand and finish it.
Determined actions are not freely chosen (no possible alternative), and once determined, proceed as determined without restriction or impediment. Freedom of action (as determined) but not freedom of will.
In the restaurant, it is clearly
determined that each customer will face a menu containing
many alternative possibilities, and it is also
determined that each will have to select from that menu a single dinner order or they will go without any dinner.
All events are always causally determined. So, we
cannot dismiss those events where we are
necessarily faced with
many possibilities, and must
choose what we
will do.
If multiple possible alternatives are
causally necessary, then they will show up exactly at that time and place. They are unavoidable. It is
impossible to avoid these multiple possibilities.
We will, of course, process those possibilities in a deterministic manner, resulting in an inevitable dinner order. But the multiple possibilities were just as inevitable as the choice. And our
making that choice for ourselves was also just as inevitable as the choice.
And what do we call it when we are free of coercion and undue influence while choosing what we will do? It is called free will. So, you continue to be incorrect in your claim that determinism implies no free will. It was
inevitable, from any prior point in eternity, that we would make that choice for ourselves while free of coercion and undue influence.
In terms of 'free will' it makes a world of difference that actions are determined unconsciously, with no possible alternate action because nothing is being willed, it's a process of acquired information acting upon the system, with its sets of criteria determining actions which are reported consciously milliseconds later.
Everything the brain does is motivated by biological needs. Without those drives to do what is necessary to survive, thrive, and reproduce, we would sit motionless, just like a rock, and we would have become extinct. Quite possibly there were many variations in species that lacked these drives and did immediately die off. So, we may generalize these drives, figuratively, as a "will to live", and suggest that such a
will is the driving force within the brain and all of the other systems in the body. As Mark Solms suggests, it is the affects produced by mechanisms in the brain stem that originate conscious awareness. He suggests that the key characteristic of feelings is that they are felt, that they are the earliest things of which we are aware.
So, I'm going to suggest that will is the driving force for the whole mechanism.