Yet what they do next is fixed, not chosen by free will, but set by antecedents in the form of inner necessitation.
First, choosing is the antecedent inner process that necessitates the choice, which fixes the will. For any deliberate action, the final prior cause of the action is the act of deliberation.
Nope, decisions are determined by information exchange between cells, networks and regions and fed into the experience of deliberation while conscious thought is active. Thought form as the information is processed and reported in conscious form.
The agency is not conscious deliberation itself, but underlying unconscious information processing feeding the conscious experience with fully formed thoughts.
The illusion of conscious agency - as pointed out - is revealed when something goes wrong within the underlying system, connectivity, memory function, etc.
Second, we presume a chain of perfectly reliable cause and effect, preceding the choosing, within the choosing, between the choosing and the action, and following upon the action. There is no break in the causal chain.
That is true of everything in the universe or world that is deterministic. It may even be true for QM;
''Wave functions - the probability waves of quantum mechanics - evolve in time according to precise mathematical roles, such as the Schrodinger equation (or its more precise relativistic counterparts, such as the Klein-Gordan equation). This informs us that
quantum determinism replaces Laplace's classical determinism Knowledge of the wave functions of all of the fundamental ingredients at some moment in time allows a ''vast enough'' [Laplace] intelligence to determine the wave functions at any prior or futures time.
Quantum determinism tells us that the
probability that any particular event will occur at some chosen time in the future is fully determined by knowledge of the wave function at any prior time.
The probabilistic aspect of quantum mechanics significantly softens Laplacian determinism by shifting inevitability from outcome-likelihoods, but the latter are fully determined within the conventional framework of quantum theory.'' Brian Greene, page 341 ''The Elegant Universe''
''Der Mensch kann zwar tun, was er will, aber er kann nicht wollen, was er will - A man can do what he wants, but not choose or select what he wants'' - Schopenhauer.
Dear Mr. Schopenhauer, a person chooses what they will do about their wants, needs, and desires. And that is what free will is about. It is about fixing our intention upon some specific action, whether it is deciding what we will have for breakfast or deciding how our property should be distributed after we die. That is what the "will" in free will is about: the intention to actually do something, whether we feel like doing it or not.
“It might be true that you would have done otherwise if you had wanted, though it is determined that you did not, in fact, want otherwise.” - Robert Kane
The will of the customer is determined by life and the world.
Lovely rhetoric but not at all realistic. Each person at the table will choose for themselves what they will order for dinner, without consulting with "life and the world" outside the restaurant.
Nothing happens in a vacuum. Each and every customer in the restaurant has antecedents;
''It is unimportant whether one's resolutions and preferences occur because an ''ingenious physiologist' has tampered with one's brain, whether they result from narcotics addiction, from 'hereditary factor, or indeed from nothing at all.' Ultimately the agent has no control over his cognitive states.
So even if the agent has strength, skill, endurance, opportunity, implements, and knowledge enough to engage in a variety of enterprises, still he lacks mastery over his basic attitudes and the decisions they produce. After all, we do not have occasion to choose our dominant proclivities.'' - Prof. Richard Taylor -Metaphysics.
The will of the customer is fixed by antecedents.
So, which of those antecedent events is the most meaningful and relevant prior cause, the big bang, or, the person's own choosing? Decide quickly, because the waiter needs to know who gets the bill for dinner.
Everything that has happened before brings you to this point and this action. There are no exclusions, clauses or exemptions.
''Each state of the universe and its events are the necessary result of its prior state and prior events. ("Events" change the state of things.) - Marvin Edwards.
''Causal necessity'' just refers to how the system works, its elements and how they interact deterministically.
Exactly. And each of us happens to be a system with elements that interact deterministically in a way that presents itself to us as a person.
Not only presents itself, but makes us who we are, what we do or do not like, enjoy, find meaningful, our thoughts, feelings and actions.
That is how determinism is defined.