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September 20, 2014

September 20, 2014

Posted by **Justin** on Sunday, March 30, 2008 at 8:07pm.

a.) If I study hard I’m sure to get an A in philosophy, but I haven’t studied at all; So I can’t get an A.

b.) If a number is greater than 7 then it is greater than 4. 8 is greater than 7, therefore it is greater than 4.

c.) If I want an A in philosophy I need to study for the exam, since I haven’t studied for the exam that means that I don’t want an A.

d.) No computers can feel pain. The human brain is a computer so no human brains feel pain.

e.) How do I know that Hillary Clinton is a liar? All politicians lie to get ahead and Hillary Clinton is a politician!

f.) If 4 is prime then it is divisible only by 1 and itself. 4 is not prime therefore it is divisible by numbers other than 1 and itself.

g.) Some doctors watch Lost and some people who like Lost are conspiracy theorist so some doctors are conspiracy theorists.

- Philosophy -
**Ms. Sue**, Sunday, March 30, 2008 at 8:17pma) isn't a valid argument because the conclusion doesn't follow from the two premises. There's a possibility that you could get an without studying hard.

b) is valid.

Check this site for a good explanation of validity.

http://www.jimpryor.net/teaching/vocab/validity.html

We'll be glad to check the rest of your answers.

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