Men, Women, Sex And Darwin

"Article by Natalie Angier, adapted from her book Woman: An Intimate Geography, seeks to debunk accepted theories about differences between men and women; says hard-core evolutionary psychologists have got a lot wrong, especially when they describe yawning chasm that separates innate desires of women and men; says, for example, that in matter of sex, it is hard to insist that men naturally like greater amounts of sex, with more partners, than women do, until men are subjected to same severe standards and threat of censure as women are, and until men are given lower hand in so-called casual encounter from the start; drawings (L)"