Re: Is free will ‘compatible with what we know about the laws of nature’? This physicist says no (AlterNet)
Note before we start: physicists, like anyone, use language and logic to communicate their ideas. One does not need to be a physicist to evaluate the logic of how the ideas are presented. It does help, of course, to follow the substance of an article if you have knowledge of the subject matter, even rudimentarily.
Problem of logic
The physicist, Sabine Hossenfelder, does not argue that free will is an illusion, but the first sentence of the article is: “Is free will real?” The article goes on to use Ms. Hossenfelder’s statement as support to argue “No,” and that “the concept of free will could be nothing more than an illusion generated in the human brain.”
I agree with the overall idea of the article that free will is an illusion, but not based on the fallacy of division, where the parts are assumed to have the same characteristics as the whole. They quote Hossenfelder as saying:
Free will is often described as the possibility that one could have done otherwise. But this description stopped being useful with quantum mechanics because it’d mean that single particles also have free will.
The first sentence says “one could have done otherwise”, where “one” we take to mean a human (a system whose parts work together to give rise to emergent properties); then in the following sentence, she disassembles “one” (system) to particles.
If the “one” assumes only human agency, then we have constrained our thinking to ourselves as the measure of all things. Quantum mechanics allows for indeterministic behavior at the level of particles, and humans are just one tiny system within cosmic systems. The assumption corrupts the logic by neglecting the broader context of cosmic systems.
Quantum mechanics tells us that particles can exist in multiple states at the same time and that they can do things that are not possible in classical physics. Some can come in and out of existence; and they can do things that are unpredictable or unconstrained by determinism. Free will might extend beyond human consciousness and decision-making to include the indeterministic nature of fundamental particles.
That seems like a good foundation for “free will” without being free will in itself. Looking for “free will” in particles was a logical thing to investigate.
But it is not logical thinking to say that a property of a system of particles working together must also be found in the individual parts themselves. Should we also look for consciousness in the individual neurons of our brain?
Re-thinking free will
To be fair, Sabine Hossenfelder simply points out that if free will exists at the level of human beings, then it cannot be explained by classical physics, which implies that it may have something to do with quantum mechanics. I still think she’s looking for machinery, not emergent properties. How do you recognize “free will” apart from the ability to choose “to do otherwise”? It’s not a thing — it’s an effect. Emergence.
Continue reading “Illusion of free will: same conclusion, different means”