Some interesting fallout from the external examiner. It's raised some big questions, which when I examine them only get bigger. One of the big issues concerns the relationship between discipline and subject. The video (which has an improvisation which I'm really pleased with) shows me thinking through some of this stuff.
What to add here is something about the relationship between discipline, subject and identity. I think discipline may be an organising principle for identity, for the individual. As an organising principle, it affects all levels of regulation of the individual. Subject, on the other hand, may only be a set of dispositions (knowledge, skills) for engaging with a particular context. If the context changes, we learn a new subject. But we may hold to the same organising principle.