“ Unlike knowledge, which is infinitely reusable, ignorance is a one shot deal: Once it has been displaced by knowledge, it can be hard to get back. And after it’s gone, we are more apt to follow well-worn paths to find answers than to exert our sense of what we don’t know in order to probe new options.
— David Gray from “Wanted: Chief Ignorance Officer” Harvard Business Review, November 2003, 22-24
