As I see it, the decision is made unknowingly, but is that really making a decision? Because it's not meant to give a 50/50 chance. Plus, in reality, there's no chance at all, it's basically the force applied on the coin and where it was applied, added to the conditions of the world around you. It is 50/50 in the sense that you'll get either face up, but it is in reality letting the world decide (through its current state).
Did I go wrong somewhere?