Judith Mackrell talks about counteracting the powerful forces of discipline/submissiveness, competition, ego, and tradition with Royal Ballet artistic director Kevin O’Hare (“We had issues with one guest coming in recently who was behaving in ways that we aren’t used to any more”) and Scottish Ballet artistic director Christopher Hampson (“We have 40 dancers, and there are still about 15 who would rather I shouted at them and tell them what to do.”).