 PM1 is plausible. Woodrow-minus seems to have everything that it takes to be a desk: it looks like a desk, it’s shaped like a desk, it’s got a flat writing surface, and so forth. Accordingly, it seems arbitrary to suppose that Woodrow but not Woodrow-minus is a desk. Moreover, if Molly were removed, Woodrow-minus would certainly then be a desk. But since Woodrow-minus doesn’t itself undergo any interesting change when Molly is removed (after all, Molly isn’t even part of Woodrow-minus), it stands to reason that Woodrow-minus must likewise be a desk even while Molly is attached to it.