Casuistic methods of reasoning in medical ethics have been criticized by a number of authors. At least five main objections to casuistry have been put forward: (1) it requires a uniformity of views that is not present in contemporary pluralistic society; (2) it cannot achieve consensus on controversial issues; (3) it is unable to examine critically intuitions about cases; (4) it yields different conclusions about cases when alternative paradigms are chosen; and (5) it cannot articulate the grounds of its conclusions. (...) Two main versions of casuistry have been put forward, and the responses to these objections depend in part on which version one is defending. Jonsen has advocated a version modeled on the approach to casuistry used by moral theologians in the 15th and 16th century, involving comparison of the case at hand with a single paradigm and a lineup of cases. The present author has advocated another version, drawn from experience with cases in clinical ethics, which involves comparing the case at hand with two or more paradigms. Four of the five objections are unsuccessful when directed against Jonsen'sapproach, and all of them are unsuccessful when directed against the approach involving comparison with two or more paradigms. (shrink)