PHLA10H3 Study Guide - Final Guide: Deductive Reasoning, Logical Form (Linguistics), Mathematical Proof
Document Summary
When premises are true , then the conclusion is true. Non-deductive arguments have more information but have the risk of error. Only arguments are valid/invalid not statements or ideas. The conclusion can never add information outside of the premise(s) Invalid if premises are true but conclusion is false. Debate on validity of the logical form. Debate on the truth of the premise(s) A valid deductive argument is sound if all premises are true. You can deduce something from the conclusion. One that provides good enough reason for the conclusion to be true. A good argument requires true premises , however just because a premise is true, doesn"t. If a premise is true but irrelevant to the conclusion, then the argument cannot. Begging the question (circularity) arguments are valid but bad arguments. mean the argument/conclusion is correct be true. An argument that assumes the opposite of what you want to prove by finding something impossible or absurd.
