That 'we are our brain' doesn't establish freedom will.
Free will is established by every case where we choose for ourselves what we will do, while free of coercion and undue influence. This is operational free will, a deterministic event which is used to assess a person's responsibility for their actions.
Free will is, just like all other events, a causally necessary event. But the fact of causal necessity plays no meaningful role in understanding free will (or anything else for that matter).
Coercion and other extraordinary influences can impair or remove our free will on a cases by case basis. When a guy with a gun forces us to subjugate our will to his, then we do not have free will in that case. When our brain is injured or mentally ill, such that we are unable to perform a rational choosing operation, then we do not have free will.
Everything that has a brain can only act according to whatever their brain architecture produces, not their will. Will is not free, it plays its determined behavioral role.
The brain causally determines will by choosing what we will do. Will I have an apple or will I have an orange? I had an apple this morning, so I will have an orange now. That is how will is causally determined.
Trick Slattery said:
The ''selfhood'' argument fails to establish freedom of will.
''Some
compatibilist might say that our brains changing are “us” (a sort of “selfhood” argument), but they neglect the fact that our brains do not just change through an internal process alone ...
What our brain does, it does. What the environment does, it does. Both our selves and the environment are part of the real world.
But the choosing process happens entirely within our own brains. And it is the choosing process that actually alters the brain, creating the will to do something, and it is then that will to do something, that motivates and directs our subsequent actions, as we carry out our chosen intent.
Trick Slattery said:
... and even if it did, why wouldn’t a tumor be considered an internal process?
Assuming the tumor interferes with our ability to decide for ourselves what we will do, then it is indeed a part of the internal process, but only as an extraordinary influence that disrupts the normal process.
Trick Slattery said:
Why are abnormal processes excluded from such “selfhood” here? Again, the normal/abnormal distinction is arbitrary, when people have as much control over their incremental brain changes than they do a quicker change due to a tumor.
Abnormal internal process are not excluded at all. They are treated as extraordinary influences that either impair or remove a person's ability to decide for themselves what they will do. The distinction between a normal process and an abnormal process is quite important. If there is significant mental illness then that will be treated medically and psychiatrically. If there is no mental illness, then there is no need for medical or psychiatric remedies.
Despite the significance of of this distinction, hard determinists try to bury it. They instead insist that we abandon such distinctions because they can both be chalked up to causal necessity. The absurdity of this argument is that all
all meaningful distinctions can be removed by the same argument, because all events are equally causally necessary, without distinction.
If causal necessity can be used to bury one distinction, then it can bury them all. And half of intelligence is the ability to make distinctions and the other half is the ability to infer generalities. So going along with the hard determinists would make us all half wits.
Trick Slattery said:
I think these ideas stem from slow, incremental brain changes giving people an illusion of control, where as fast changes drop that illusion.
Imagine, if you will, that 10 years from now your brain will be configured as very different from what it is today. Your environmental and biological conditions lead to someone with many different beliefs, ideas, and the way you decide on things is drastically different. Now imagine that your brain took a leap from one state to the other in an instant. To others around you it would appear you are behaving entirely differently. That you were no longer “you”. Something happened to change your brain, and you had no control over that happening. Your “programming” was changed and you had no say over the change! The main difference between than brain state and the one that took ten years to get to is the time and causal process.''
Ironically, one of the things that has not changed over the past 60 years, is the simple solution to the determinism "versus" free will paradox. There is no conflict between the notion that my choices are both reliably caused (determinism) and that they are reliably caused by me (free will).
People do not have an "illusion" of control. People empirically observe themselves controlling things, whether it be walking to the kitchen, driving a car, or choosing for ourselves what we will do. There is no illusion here.
On the other hand, the hard determinists have this delusion in which an entity called "determinism" is controlling everyone's choices from before they were even born. They view reliable cause and effect as a constraint, when actually reliable causal mechanism are the very things that enable every freedom that we have to do anything at all.