by Rudofsky. Doubleday, $19.95 and $10.95 paper. Mr. Rudofsky’s ideas for the reform of furniture and plumbing are idiosyncratic, enthusiastically argued, and unsupported by any serious consideration of history, climate, relative convenience, or even the simple rule that cold air sinks. His engagingly kooky text is generously illustrated with pictures of the surprising or clever or ludicrous contraptions that humanity has devised to cope with life’s daily necessities. References, index.