Donald Norman argues that a well-designed product should make functions visible and intuitive: users should be able to grasp how it works, what their options are and get feedback about the results of their actions. That is all very wise, but our modern devices have managed to become so intuitive and versatile by concealing from us how they really operate. Laying bare the true complexity of the supercomputers in our pockets would boggle the mind. We cannot be exposed to how these things really work, lest we lose our grasp on reality. (See also: ChatGPT.)