Trust in Numbers: The Pursuit of Objectivity in Science and Public Life. Theodore M. Porter Princeton, NJ:Princeton University Press,1995, 310 pp. US$24.95 cloth. ISBN 0-691-03776-0. US$16.95 paper. ISBN 0-0691-02908-3. Princeton University Press, 41 William St., Princeton, NJ 08540, USA. - Quantification and the Quest for Medical Certainty. J. Rosser Mathews. Princeton, NJ: Princeton University Press, 1995. US$39.50. ISBN 0-691-03794-9. Princeton University Press, 41 William St., Princeton, NJ 08540, USA.