PHI 1101 Study Guide - Final Guide: Soundness, Thrasymachus, Deductive Reasoning

• School: University of Ottawa
• Department: Philosophy
• Course: PHI 1101
• Professor: All

Document Summary

Arguments: an argument is a set of statements that claims that one or more of those statements, called the premises, support, or justify, or make it reasonable to believe that another of those statements, the conclusion, is true, logical strength, when the premises really do support the conclusion, the argument is logically strong, when they do not really support the conclusion, the argument is logically weak, soundness, an argument is sound if is logically strong and it has true premises. Inductive arguments: in virtue of the logical form of an inductive argument, the truth of its premises makes the truth of its conclusion probable, not as strong, badly constructed, deductive arguments, an argument is said to be deductively valid if and only if whenever all the premises are true, the conclusion must also be true, the premises, if true, guarantee the truth of the conclusion. Therefore, socrates is immortal (by p2) and mortal (by p3). (contradiction!)