>>14105549here is an analogy that might help you understand what i'm getting at: our biology is like a car, our will is like a person in that car.
theoretically, we control the car; it goes the speed we accelerate it, it stops when we pull the breaks, it'll play music if we put a cassette into the cassette player...etc
but the car controls us without even realizing it; the car tells us what pedal to press to accelerate, tells us where we must sit. it has trained us to think of it whenever we want to travel somewhere.
there is a joke among paleoanthropologists, it goes something like this: we are wont to think that humans domesticated wheat, but the reality is that it's wheat that managed to domesticate humans, for we look after it and have guaranteed that it will survive forever.
all of these things are directly analogous to each other: the wheat gets humans to spread it globally and reproduce it. the car gets humans to sit in its seats, to drive it and feed it casettes. the body hosts the will, and manipulates it to make choices so the body may survive.