Critical Thinking, Fundamentals: Deductive Arguments
In this video,
Geoff Pynn follows up on his introduction to critical thinking by
exploring how deductive arguments give us reason to believe their
conclusions. Good deductive arguments guarantee their conclusions, and
so must be valid (i.e., it must be impossible for the premises to be
true while the conclusion is false) and have true premises.
Philosophers call arguments like these "sound". You can see whether an
argument is sound by trying to think of a counterexample to it, but to
see whether its premises are true, you need to do some research.
https://youtu.be/3jvQrpVQaYM