It’s possible to subdivide this overarching model. In my experience, the single most powerful progression concerns learning objective. I spent the best part of twenty-five tears disliking and ignoring them, preferring to see myself as a creative and exploratory teacher and my lessons as places where surprising things happened. Even now I can’t avoid gloom and despair when I attend a training event which begins with a PowerPoint slide of the intended objectives for the day. I just know that, six hours later, I will be shown the slide again and told that I’ve met them.