" Great teachers focus on what the student is saying or doing,” he says, “and are able, by being so focused and by their deep knowledge of the subject matter, to see and recognize the inarticulate stumbling, fumbling effort of the student who's reaching toward mastery, and then connect to them with a targeted message. "

― Daniel Coyle , The Talent Code: Unlocking the Secret of Skill in Sports, Art, Music, Math, and Just About Everything Else