In Pragmatic Thinking and Learning, Andy Hunt describes what he calls "second-order incompetence" (or, the Dunning-Kruger effect) in relationship to the Dreyfus model of skill acquisition. Not only are most worthwhile skills very difficult and time-consuming to develop (decades, not weeks or months), but most of us tend to overestimate our own skill level, thinking ourselves experts when really we're (at best) advanced beginners and often novices.
