MUST READ WELL started nine or ten years ago with a stray thought I scribbled on a scrap of lined paper and tacked to a bulletin board in the room where I do my writing. I have six bulletin boards in here, all of them always in leaf with dozens of fluttery little notes of this kind. Some of them are memos of ideas for a novel or personal essay I might write one day. (Or, much more likely, will never write.) Here’s one I recorded on lined paper so long ago that the sun has faded the lines on the paper to near invisibility: The Sarahs Two women who have worked together in public for decades call it quits. The weariness and repulsion one feels looking at the other after years yoked together.   Tacked on top of that one, on an index card, is a slightly more recent afterthought: The Susans Singing duo Radio hosts Sisters! One still lives in (ancient) mother’s apartment. Possible new tour.   Another story idea I’ve had tacked up for many years: A man from Montana who is terrified of flying is unexpectedly elected to Congress. Something like this actually happened to a…