What Is Valid vs. Invalid? | Deductive Reasoning

It can be difficult to recognize what is valid vs. invalid reasoning. Here you'll learn how to identify deductive arguments as valid or invalid—the measure of quality of deductive reasoning.

Deductive validity is a difficult concept. And invalid arguments can seem convincing. So pay careful attention! Deciding whether an argument is valid vs. invalid is an essential skill in logic, critical thinking, philosophy... and everyday life.

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Further Reading

Paul Herrick, Introduction to Logic, Chapter 4, “How to Evaluate a Deductive Argument” (Recommended companion textbook for this channel.)

Internet Encyclopedia of Philosophy, "Validity and Soundness"
https://www.iep.utm.edu/val-snd/

Mental Floss, "13 Furry Facts about Bobcats"
https://www.mentalfloss.com/article/8...