Father, mother, son, daughter--all of these terms connote both being and doing. What does it mean to be a daughter or mother, father or son? Manager and leader are other words with the concepts of being and doing built into it: what is a manager/leader and what does he or she do? Luke is championing the term "Agilist" as a person who is and does Agile. When doing and being are aligned--in other words, when an individual is and does their role, whether father or leader--their output is better. Luke proposes what he calls "serious play" as a way to get individuals to be and do their roles. "When you're in a state of play," he shares, "your doing and being are more aligned. You're actually in a place mentally when you're fully engaged."