Risks are known unknowns. Uncertainties are unknown unknowns. - Josh Kaufman

Self-education is, I firmly believe, the only kind of education there is.

In Brain Rules, John Medina shares how he’s able to keep the attention of his students in classes that last more than an hour: he plans his class in modules that last no more than ten minutes. Each module starts with a Hook — an interesting story or anecdote, followed by a brief explanation of the key concept. Following this format ensures that his audience retains more information and doesn’t zone out. (That’s the primary reason this book is organized in short sections that take less than ten minutes to read.)

People who are “unconsciously incompetent” don’t know they’re incompetent — they know so little about the subject that they can’t fully appreciate how little they know. That’s why every barber and taxi driver you meet is an expert on the economy and international politics.