Jane’s done some fast catch-up: one reason for our writing down the history was to pick up the threads of that universe where I’d left them some years back. So now we’re actively working. Jane’s input is invaluable: she started out in the sciences, as she says, counting muons, back in the day; I started out with an interest in astronomy and then drifted into linguistics and archaeology, which entails earth sciences, so we both have useful background; and between us, we’re having a ball finding our ‘viewpoints’ and figuring what they’re up to. The two of us spark ideas off each other and we write alike. Now and again we’re completely unsure which of us wrote a particular passage, simply because we’re back and forth with the editing as well as the writing, and we forget whose idea it was. This is a good thing. And it’s a lot of fun.