Thanks to Arthur Anderson for a thoughtful note. However, I wonder if there a ren't some semantic problems over this real museum/virtual museum issue. He mentions using WWW to "exhibit" things that don't involve "real" artifacts, such as the principle of "torque." It seems to me that you "exhibit" some concepts on the printed page, in books and magazines, with text, pictures, and diagrams, and that this is the sense in which anything is "exhibited" on the Web: a musem "exhibit" on the Web is more analogous to a catalog, or perhaps an illustrated exhibit script, than it is to an actual exhibit of "real" artifacts.