Another way to put it is that there obviously exists an algorithm that can predict what you will choose. It just isn’t this one, but the opposite. The entire point of this exercise is to prove that you have free will. If there obviously exists an algorithm that can predict what you will do, you don’t have free will, do you?
Thus “random,” aka, 50% is the target: this algorithm cannot predict what you do; you have free will.
Thus “random,” aka, 50% is the target: this algorithm cannot predict what you do; you have free will.