This traditional relationship between “leaders” and “followers” is the opposite of what I believe is needed to be most effective, and being maximally effective is the most important thing a “leader” must do. It is more practical to be honest about one’s uncertainties, mistakes, and weaknesses than to pretend they don’t exist. It is also more important to have good challengers than good followers. Thoughtful discussion and disagreement is practical because it stress-tests leaders and brings what they are missing to their attention.