Abstract
I was amazed to read Crenshaw's demonstration that scientists do not know what they are talking about (Perspectives, June 1994, p. 148). His claim struck me as something that belonged rather in the National Enquirer. One gross error he makes is the assumption that scientists give real definitions, whereas they only give instrumental descriptions. His demand for a proof of the "force of gravity" requires science to deal with essences. It can't.