This might happen to you a lot, but to me, nearly never. Last night, tossing and turning with a Covid blocked nose, a thought came to me utterly unbidden: here’s how you should write that tricky bit in Chapter 15 that you’ve been puzzling about for a fortnight. Yikes! Silly me, I didn’t even think of leaping from bed to record this inspiration, but luckily, when I arose, the idea was still with me. And no, it didn’t turn out to be subconscious piffle, it was pure gold.