Do you believe in free will?

[Anomalocaris]

It doesn't have to actually be predicted. But if your choice is in theory accurately predictable, then how is it free?

My choice is not predictable to you, when talking about general life situations.

I accept that if you locked me in a lab and gave me a choice of two buttons to press, and one meant certain death, you could predict which one I would choose.

It doesn't matter whether your choices are predictable by me personally. All it matters is whether it is in theory predictable at all. It's sort of like planets are constrained by newtonian gravity. If I personally can't predict orbits, that doesn't mean the orbit is thus free to change. So long as it is possible in any sense to predict it, that means the orbits are not free at all to break the theoretical prediction.

I think in theory will is predictable based on our current high level understanding of how the organ in which will is formulated is thought to work. The prediction might be extremely complicated, more complicated than could be attempted in the foreseeable future. But there is nothing that says in principle it can not be predicted. So there is no will, only an deficiency of understanding needed to spell out exactly how it is always coerced onto just one path in each circumstance.