The compatibilist proposition is simply that free will is a meaningful concept within a deterministic world.
The proof is this:
P1: A freely chosen will is when someone chooses for themselves what they will do, while free of coercion and other forms of undue influence.
P2: A world is deterministic if every event is reliably caused by prior events.
P3: A freely chosen will is reliably caused by the person's own goals, reasons, or interests (with their prior causes).
P4: An unfree choice is reliably caused by coercion or undue influence (with their prior causes).
C: Therefore, the notion of a freely chosen will (and its opposite) is still meaningful within a fully deterministic world.
P1: A freely chosen will is when someone chooses for themselves what they will do, while free of coercion and other forms of undue influence.
What happens on a cellular level is not chosen. Cells process information and once readiness potential is achieved information, conscious experience is generated.
But what happens in the restaurant is chosen. We have a menu of dinners to choose from, and the chef is capable of preparing any one of them for us. So, each dinner on the menu is a real possibility. The only thing standing between us and dinner is that we must make a choice. No choosing, no dining.
Given determinism, the outcome is determined.
Of course. And one of the things that is determined is that we must make a choice before we can have our dinner.
There goes any real choice.
False. A real choice must be made or we'll have no dinner! It is causally necessary that we must make a choice in order to eat tonight.
Unconscious mechanisms processing information can hardly be called a free will choice.
Apparently they can, because we know that a lot of the brain's activity happens below conscious awareness, and, that conscious awareness itself is a product of specific functional areas of the brain, and, we also know that we must make a choice in the restaurant or we'll go without dinner.
Therefore, it logically follows that "unconscious mechanisms processing information" does not prevent us from choosing, but rather enable us to make choices.
Given determinism, the outcome is determined. There goes any real choice. 'Someone chooses for themselves' is misleading. Unconscious mechanisms processing information can hardly be called a free will choice.
"Someone choosing for themselves" is an empirically accurate description of what happens in the restaurant.
Sure, but still not a choice given the outcome is fixed. Which means no possibility of an alternate action.
The possibility of an alternate action was guaranteed by the choosing operation itself. In the same fashion that the logical operation of
addition requires at least two numbers, the logical operation of
choosing requires at least two real possibilities before it can begin. Without two numbers, addition cannot begin. Without two options, choosing cannot begin.
Fortunately, we have a literal menu of real possibilities in the restaurant. And it is possible for us to choose any one of them. Nothing prevents us from choosing the steak dinner. Nothing prevents us from choosing the lobster dinner.
"I
can choose the steak dinner" is true and "I
can choose the lobster dinner" is equally
true. These are two facts of which we have
certain knowledge. The only thing we are uncertain about is which one we
will choose. Will I choose the steak or will I choose the lobster? I don't know! But the waiter is standing there. Everyone else has already made up their mind and told the waiter what they will have. And if I cannot make up my mind, then I will have neither the steak nor the lobster!
So, it is really necessary that I make a choice, right now. So, I flip a coin. Heads, steak. Tails, lobster. "I will have the lobster dinner, please", I tell the waiter, and breathe a sigh of relief.
Would the punters be happy placing their bets on a fixed race? In fact the horse that wins is the only possible result in any race, just that nobody has deliberately fixed the race and punters do not know which horse must necessarily win.
Well, my first question was why only the kickers were betting on the horses. What about the quarterback or the tight ends? "America and England, two countries divided by a common language." Thank God for the OED.
The punters were uncertain which horse
would win. But they bet on their own horse because they were certain that their horse
could win.
Nevertheless, no other outcome was possible.
Sounds believable, doesn't it? But, no, the statement is literally false.
Because of the uncertainty at the beginning of the race, there was a real possibility that each of the selected horses could win. It was never "impossible" that any of those horses could win. It simply did not turn out that way.
The fact that a horse would not win does not logically imply that the horse could not win. In fact, the statement "my horse could have won if he had the right jockey" may be quite accurate. All uses of "could have" logically imply that (a) it did not happen and (b) things would have had to be different in order for it to happen. With those two implications already built into the term "could have", we get potentially true statements, like "he could have won".
The fact that the horse did not win never implies that it was impossible for the horse to win.
What happens within the brain determines outcome. You can call it a persons choice, but rather than the work of a 'person' it is specifically the brain that processes information and determines output, itself being determined by input, architecture, chemistry, etc. None of it open to choice.
Rather than the work of a 'person'? What do you think is the result of all that information processing, architecture, chemistry, etc., if not to function as a person?
The reductionist fallacy is to presume that having explained how something works that we have somehow "explained it away". But that is not what is happening. We are simply explaining how a 'person' works. The person is still there, right in front of us, flipping a coin to decide whether he will have steak or lobster for dinner.
Sometimes it sounds like hard determinists are carefully wording their terms in order to support their propositions and conclusions. Fortunately, compatibilists are pragmatic empiricists, so they can keep the facts straight.
Unless you want to challenge my definition of free will, P1 still holds true.