Disproving implications with Counterexamples

Counterexamples are one of the most powerful types of proof methods in math and philosophy. When you give a counterexample, you are demonstrating that some claim if false. For instance, if I say that every prime number is odd, I can disprove that claim by observing that 2 is a prime which is even. In this video we're going to talk about when you can use counterexamples, the structure of that type of proof, and see some examples.

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