If the questioner guesses the computer as often as she guesses the human, then the computer in effect wins. Leibniz who thought that the view that mind and body causally interact was absurd on the face of it. His equally problematic idea. Mind and body ran along causally independent, but parallel tracks, in a kind of harmony, pre-established by god. But there is no interaction between mind and body.
Bodily events cause bodily actions, mental events cause only other mental events.
There is no mind-body interaction. God does the causing. Whenever I choose to raise my hand, god makes it go up for me. My wanting it to go up is an occasion for god to show his grace. This is the view defended by Malebranche.