This morning I read a tweet from an SCBWI colleague, who posted (at midnight) that she was in bed with her manuscript. And I understood completely, since I was up too early and pondering the same book mapping exercise that she is undertaking. We're all slaves to a homework assignment posed by Cheryl Klein, editor extraordinaire at Arthur A. Levine books (and she of Harry Potter continuity editing fame). I ordered a copy of her book Second Sight on revision, and it has once again been a paradigm shift of an exercise (and I've only just begun). I guess that is the good thing about revision. Every time I think I have the ms done, I'm back to the drawing board. But the book gets better every time too which, after all, is surely the point.