" Why do teenagers make bad decisions?” he asks, not waiting for an answer “Because all the neurons are there, but they are not fully insulated. Until the whole circuit is insulated, that circuit, although capable, will not be instantly available to alter impulsive behavior as it's happening. Teens understand right and wrong, but it takes them time to figure it out. "

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