PHIL 24320 Lecture Notes - Lecture 2: Agnosticism, Validity, Fair Coin
Document Summary
4 features of a good argument continued . Logical validity: no possible way that the premise is true but the conclusion is false. If the argument is valid, then assuming that the premise is true, the conclusion will inherit the truth. Ex: john flipped a fair coin 5 times, so it landed on heads at least once. Not logically valid because even assuming the premises are true, it does not insure that the conclusion would happen as a result. (it could have landed on tails all 5 times. ) John flipped it 300 times; therefore, it"s incredibly likely that it landed on heads at least once. It"s logically valid (meaning assuming all the premises are true, so is the conclusion). So an argument is sound if all the premises are true and also because all the premises are true the conclusion is true. So if the premises are false but the conclusion is true, not sound.
