Inspired by this: My simplistic view is that there should be no "forbidden" steps. Some movements are more important than others, sure. For a leader, learning to walk forwards is more important than learning to perform a perfect back sacada. But that doesn't mean you shouldn't learn how to do back sacadas - they're a good exercise in dissociation for the leader, and they help teach the follower to ignore the leader's weird leg movements. So I can't think of any AT movements which should never be taught - can anyone else?