As one of the evolutionary biologists quoted in a recent article (R. Lewis, The Scientist, May 12, 1997, page 13), I must challenge Michael Behe's response (M. Behe, The Scientist, June 9, 1997, page 10) that scientists should confess to being "substantially in the dark" about the cause of evolution. Teaching evolution is already hard enough without feigning ignorance about a fundamental principle of life. Behe criticizes Lewis for "conflating different concepts under the single term of 'evolu

MACHINES AND INTELLIGENCE A Critique of Arguments Against the Possibility of Artificial Intelligence. Stuart Goldkind. Greenwood Press. Westport, CT, 1987. 138 pp. $29.95. MAN-MADE MINDS The Promise of Artificial Intelligence. M. Mitchell Waidrop. Walker and Company, New York, 1987. 288 pp. $22.95 HB, $14.95 PB. After 30 years, investigators and critics of artificial intelligence (AT) continue to differ in their definitions of the domain and the fundamental claim that AI is or is not possib