How to use truth tables to narrow down the number of possible candidates for missing premise. and, how to use philosophical analysis to pick the most plausible candidate from among those. this activity is a nice capstone to a course in logic for it combines formal and informal procedures.

During the last third of the 20C, public discourse in the United States has become increasingly acerbic. Parallel to this development there has been an increasing enrollment in College level logic courses, courses that focus on arguments and their appraisal. Could there be a connection? A number of majorphilosophers do not just see arguments as either 100% correct or 100% incorrect. Notable in this regard are Plato, Aquinas and Hume. Their approach to “logic” and that of others is offered as (...) a palliative to the types of logic that we now teach. (shrink)