Logic Lesson 4: Rules of Inference for Dilemmas
Channel: For the Love of Wisdom
Date: 2011-06-07

Part of a series on logic, this video covers the rules of Constructive Dilemma and Destructive Dilemma, thereby completing a three-video overview of the Rules of Inference. It recaps the other rules, covers these two in detail, shows their relationship to Modus Ponens and Modus Tollens, demonstrates the validity of Constructive Dilemma with a truth table, and covers three ways of responding to dilemmas: Going Between the Horns of a Dilemma, Grabbing the Horns of a Dilemma, and constructing a Counterdilemma.

For a written summary of this video, go to my blog page on this video at:

http://wisdom.is-best.net/53/logic/dilemmas/

This video is part of a series on symbolic logic. For a more in-depth look at the other rules of inference, check out the earlier videos in this playlist:

https://www.youtube.com/playlist?list=PLB5DB5BBF7BCA64DF