Every leader should routinely keep a substantial portion of his or her time—I would say as much as 50 percent—unscheduled. … Only when you have substantial ‘slop’ in your schedule—unscheduled time—will you have the space to reflect on what you are doing, learn from experience, and recover from your inevitable mistakes. Leaders without such free time end up tackling issues only when there is an immediate or visible problem. Managers’ typical response to my argument about free time is, ‘That’s all well and good, but there are things I have to do.’ Yet we waste so much time in unproductive activity—it takes an enormous effort on the part of the leader to keep free time for the truly important things.