[laumars]

I think the GPs point is that the decision is less about free will and more about programming that has taken place through the lifetime of the host.

For example if someone asks me if I want tea or coffee and I know I don’t like coffee then I’m always going to choose tea irrespective of my free will.

This is just a crude example though, our psychology is infinitely more subtle. We are a subject to our experiences and those experiences start out against our control (due to us being kids). We are also a subject to our biology. If your body produces too much of one chemical or not enough of another then our moods could be drastically affected. We have cravings that are often chemical. Diet also plays a part too.

So much of what we think of as “free will” is actually circumstance that happened before the decision and biological states happening elsewhere in your body.