Many apologies to subscribers who received a notification of a new post earlier today. Unfortunately this was an error on my part. I was working on an upcoming essay and managed to hit the “publish” button in error well before the work was done.

So I’ve unpublished, and will try to get on with finishing up the post itself. It’s actually part of a big long-term project and it’s going to take some time to complete, I’m afraid – but since I’ve piqued your interest now, I’ll just put up the introduction as a bit of a teaser until the rest of the work is actually finished…