Consider the following line of reasoning. Let p be the proposition "Ronald was born in New York." From p, we can infer q: Ronald was born in the United States. From q, we can infer r: It is possible that Ronald was born in New Jersey. On the other hand, from p we can infer s: It is not possible that Ronald was born in New Jersey. We have arrived at a contradiction. What is wrong? Note: To answer the question, familiarity with modal logic is not needed.
-- Lotfi A. Zadeh Professor in the Graduate School, Computer Science Division Department of Electrical Engineering and Computer Sciences University of California Berkeley, CA 94720 -1776 Director, Berkeley Initiative in Soft Computing (BISC) Tel.(office): (510) 642-4959 _______________________________________________ uai mailing list uai@ENGR.ORST.EDU https://secure.engr.oregonstate.edu/mailman/listinfo/uai
