That the spirit or soul chooses was the standard definition of free will prior to materialists, evolutionists, atheists etc. You can look it up, most times referred to as metaphysical libertarianism. You all are denying freedom is real, you are rejecting subjectivity, that is the outlandish position if you ask me.
It is just unconsciounable that you dont have any theory whatever about how things are chosen in the universe, and that at the same time you pretend to be the defenders of science. You are the destroyers of science, leading to the cataclysimic fall of science in relation to social darwinism in germany, italy and japan in world war 2.
I don't really give a rat's *** about freedom or subjectivity or free will.
Irrelevant to my mindset, I'm a cruel human being, I do not care for others.
But I am the opposite of 99.99% of any evolutionary theorist you will ever find.
Science does not fall, it simply "is".
You can preform science be scrapping two rocks together or eating a steak.
Your very body is explained by science.
Diseases, the earth, the universe, and almost everything microscopic.
The explanations are not vague or half-assed like how your book might be.
It's is absolutely disheartening that people still believe in things such as souls and Gods and the like.
Childish is a better word, get a reality check, figure out where you are right now.
You are this insignificant piece of flesh that can talk, move, read, write, and halfway think.
Stuck out on some rock orbiting a somewhat bigger rock that is on fire, in the middle of nowhere.
Yet here you sit, complaining about things you
think you know about.
It would almost make me laugh if my pessimism wasn't present.