Coyne writes:
Ignorance of science. Riskin doesn’t realize that getting evidence for phenomena (e.g., evolution) is very often a step-by step-process: you have an initial hypothesis, and then you either reinforce or reduce the likelihood of its being true with new data.
How does she not realize this? Coyne never says, he just makes an unevidenced accusation.
This is a Bayesian approach, though often it’s implicit rather than specified using Bayes’s theorem. You don’t “prove” determinism or free will, you simply gather evidence that makes one of them more likely.
Right, the author does say that Sapolsky fails to “prove” his case against free will, so perhaps (supposing uncharitably) she thinks science “proves” stuff beyond any doubt whatsoever, and if so that would be wrong, but still and all it is an uncharitable reading of what she wrote, because Sapolsky certainly at the very least
implied that he had proved his case, and she is pointing out that he did not.
I would note that determinism should have high priors simply because our brains and bodies and environments, the source of our behaviors, affect our behaviors materially–usually through neuronal wiring. (That’s why Sapolsky concentrates so much on neurons.) And material objects universally obey the laws of physics.
First, in the above, Coyne slips up when he conflates determinism with hard determinism, when usually he is careful to append the “hard” modifier to his own brand of determinism. Remember, the compatibilist (whose position Coyne refuses even to entertain) does not deny determinism.
Second, he overlooks Sapolsky’s demand that in order for us to have free will, we should demonstrate free will in an neuron, which is as confused as saying that to demonstrate that water is wet, we should demonstrate wetness in water molecules. .
Third, compatiblist free will (which Coyne refuses to consider for whatever reason) has high priors as well, and as a biologist Coyne ought to know this. The biggest “high prior’ of all is that brains evolved to weigh competing options and make informed choices. If we really have no choice in what we do, what would be the selective advantage in complex brains that consume vast energetic resources which could be better allocated to simpler stuff like claws and muscles? A world of hard determinism would seem better suited to evolving P-zombies at best.
Fourth, what does he mean by “material objects universally obey the laws of physics”? This is a crucial issue, especially for the neo-Humean compatibilist, and it also goes to Riskin’s invocation of God and theology in the discussion, which, again, I will more fully analyze later. The initial point here, as has been discussed by Norman Swartz and others, is that when anyone says material objects universally “obey” the “laws” of physics, this claim is a
hangover from theology — the idea that God, the law giver, gave “laws” that “govern” the world. A more naturalistic take on this (and remember, Coyne is a naturalist) is that there are no laws of physics at all, but rather mathematical descriptions of universal regularities that we wrongly label as coercive laws.
Riskin WANTS determinism to be proved …
Ad hom.
More later. But, I would say that thus far, Coyne is doing really, really badly. His philosophical shortcomings, at the least, are glaringly obvious.