I was awake at stupidly early this morning because a small cat decided daylight meant breakfast time at 5.40am BST.
Once fed, she went back to sleep, but that's okay, because bits of the work in progress meshed together in an interesting and useful way as I sat idly drinking tea.
When something goes 'click' like that, it can be like the first domino falling to reveal one of those pictures that covers a gymnasium floor. Even when it's not quite that dramatic, it's very satisfying.
@JulietEMcKenna heeeheee I liken it to being an archaeologist moving a piece of dirt and seeing the first tesserae of a mosaic.