What Is Logic?

Image by Frits Ahlefeldt, Flickr, Creative Commons    By Dr. P.D. Magnus (left), Dr. Cathal Woods (right), and Dr. J. Robert Loftis (not pictured) Magnus: Professor of Philosophy and Department Chair, University at Albany, SUNY Woods: Professor of Philosophy, Virginia Weslayan College Loftis: Associate Professor of Philosophy, Lorain County Community College Introduction Logic is a part[…]

An Introduction to Basic Logic

Image by Thebiologyprimer, Wikimedia Commons By Dr. James Fieser / 04.01.2016 Professor of Philosophy University of Tennessee at Martin Introduction In ancient Greece, a group of traveling teachers called Sophists had the reputation of being able to argue for any point, no matter how absurd. One Sophist offered this argument: (1) Fido is Joe’s dog. (2) Fido[…]

Logic: Categorical Propositions and Syllogisms

Image via Shutterstock By Dr. Garth Kemerling / 11.12.2011 Professor of Philosophy Capella University Categorical Propositions Now that we’ve taken notice of many of the difficulties that can be caused by sloppy use of ordinary language in argumentation, we’re ready to begin the more precise study of deductive reasoning. Here we’ll achieve the greater precision[…]

Logic: Arguments, Language, Meaning, and Fallacies

Photo by JacoTen, Wikimedia Commons By Dr. Garth Kemerling / 11.12.2011 Professor of Philosophy Capella University Arguments and Inference The Discipline of Logic Human life is full of decisions, including significant choices about what to believe. Although everyone prefers to believe what is true, we often disagree with each other about what that is in[…]