Introductory Logic
Quiz #2
September 16, 2005

R. Hammack
Score _________

DIRECTIONS. Two deductive arguments are given. For each one, say if it's valid or invalid, and sound or unsound. If it's invalid, prove this using the counterexample method.

(1) If animal species are fixed and immutable, then evolution is a myth. Therefore, evolution is not a myth, since animal species are not fixed and immutable.











(2) The Theory of Evolution is correct, since George Bush says it's true, and he's never wrong about anything.