That’s the question. If you believe you could have chosen otherwise, then you have to explain how you could have chosen otherwise - given the fact that everything leading up to the choice on which road to take would have had to be exactly the same.
en.wikipedia.org/wiki/Two-stage_model_of_free_will
A two-stage model of free will separates the free stage from the will stage.
In the first stage, alternative possibilities for thought and action are generated, in part in deterministically.
In the second stage, an adequately determined will evaluates the options that have been developed.
If, on deliberation, one option for action seems best, it is selected and chosen. If no option seems good enough, and time permitting, the process can return to the further generation of alternative possibilities (“second thoughts”) before a final decision.
A two-stage model can explain how an agent could choose to do otherwise in exactly the same circumstances that preceded the first stage of the overall free will process.
Note- the word choose; “the agent could choose” to do otherwise.
P1. Either determinism or indeterminism is true
First this is non sequitur as it “neglects” to admit the possibility of supernatural design as been shown. The argument is based on evolution as the article indicates
Second- In the first stage, alternative possibilities for thought and action are generated, in part indeterministically.
NOTE: the words “in part”
Now watch…In the first “free” stage of the two-stage model, the "indeterminism is limited to the generation of alternative possibilities, (which again assumes genetic evolution)
Second- In the second “will” stage, the decision is not predetermined by events in the distant past, before the agent was born, indeed possibly back to the origin of the universe
In the second stage, an adequately determined will evaluates the options that have been developed.
And possibly back to the Word written in the heart and formation of conscience?
Culminates…“Identifying the source of indeterminism in the free stage, and locating it in the brain, has proved to be a challenge for philosophers and scientists. A random quantum mechanical event in the brain amplified to the macroscopic level might only do harm if it was involved directly in the decision.”
Sounds to me like they have fringe, vague theory, thus no fact or law to base there presumptions on? “has proved to be a challenge”
Your question…James was doing OK here…
James was the first thinker to enunciate clearly a two-stage decision process, with chance in a present time of random alternatives, leading to a choice which grants consent to one possibility and transforms an equivocal ambiguous future into an unalterable and simple past. There is a temporal sequence of undetermined alternative possibilities followed by an adequately determined choice where chance is no longer a factor.
James went beyond his pay scale here…
James also gave full credit to Charles Darwin for the core idea behind his own “mental evolution”, explicitly connecting spontaneous variations in the Darwinian gene pool with random images and thoughts in the human brain.
Course James and the rest fail to admit formation of conscience may have an outside cause.
The evolution conclusion…
The physiology of how this happens has been little investigated.