Don Norman is the “Don” of Interaction Design, having written several of the most influential books, speaking, consulting, and leading design research at companies such as Apple and HP. The progression of his interests and insights over the years has led the path of HCI and interaction design. Every few years he turned the field’s attention in new directions, leading to new understanding and new practical potentials. To oversimplify, as we must for someone as productive and wide ranging, he has shepherded in and written key books on a series of perspective shifts …