Simple. It is too much dependent on the feelings, emotions and cultural biases of the subject, and not enough on the mass of data available because a human brain cannot embrace that much data. That is the objective of meditation in the Buddhist philosophy. By meditating you erase your personal inklings and you concentrate on data outside yourself. And the subductive solution comes when you have collected enough data and that data moves you forward. the advantage of an AI device is the mass of data it can consider in one go.