Book reviewed in this article:Artificial Experts: Social Knowledge and Intelligent Machines, by H. M. Collins. Cambrige, MA and London, England: MIT Press, 1990, 266 + XIII pages, $19.95, hardback.Images of Issues: Typifying Contemporary Social Problems, edited by Joel Best. New York: Aldine de Gruyter, 1989, 258 pages, $34.95, hardback, $16.95, paper.An End to Shame: Shaping Our Next Sexual Revolution, by Ira L. Reiss with Harriet M. Reiss. Buffalo, NY: Prometheus Books, 1990, 287 pages, $21.95, hardback.Structures of Power and Constraint: Papers in Honor of Peter M. Blau, edited by Craig Calhoun, Marshall W. Meyer, and W. Richard Scott. Cambridge: Cambridge University Press, 1990, 495 pages, $65.00, hardback.Social Entropy Theory, by Kenneth D. Bailey. Albany: State University of New York Press, 1990, 310 pages, $54.50, cloth, $17.95, paper.Sociological Theories in Progress: New Formulations, by Joseph Berger, Morris Zelditch and Bo Anderson (eds.). Newbury Park: Sage Publications, 1989, 416 pages, $42.00.