PHIL 164 Lecture Notes - Lecture 3: Modus Ponens, Lactose Intolerance, Axolotl
Document Summary
An example of a 2 premise argument in the modus ponens form. Premise 1: if an axolotl loses a limb it will regenerate it. An example of a 2 premise argument that is sound. Premise 1: if a lactose intolerant person eats cheese then they will get sick. Premise 2: a lactose intolerant person ate cheese. For an argument to be sound it must be both valid, and true. Validity is determined by the fact that if the two premises are assumed true then the conclusion must be made, which is the case in this argument. Truth is determined by if the two premises are actually true in this universe. A scenario in which the conclusion of the invalid argument from above could turn out to be false even if the premises are true (a counterexample to the argument). Just because all banks give loans and my sister happens to give loans doesn"t mean she has to be a bank.
