Some notes on syllogisms

Please read this:

Richard Feldman on “Simple Moral Arguments”: http://sites.google.com/site/nobisphilosophy/feldman-simple-moral-arguments.pdf

BELOW WE COMPARED MAKING THESE ARGUMENTS LOGICALLY VALID BY WAY OF ADDING A GENERAL PREMISE, TO FORM A SYLLOGISM, VERSUS ADDING A PREMISE TO MAKE A MODUS PONENS ARGUMENT. 

Please make these arguments logically valid:

1.     Socrates is a man. If Socrates is a man, then Socrates is mortal.

2.     All men are mortal. = Any man is mortal. = If someone is a man, then that someone is mortal. = If X is a man, then X is mortal [ALL, ANY , IF-THEN]

3.     Therefore Socrates is mortal.

4.     Suzy is a Spelman student. If Suzy is Spelman student, then Suzy plays PP.

5.      All Spelmanites play PP. If Suzy goes to Spelman, then she plays PP. Anyone who is a Sp.. plays PP.

6.     Therefore, Suzy plays ping pong.

7.     Running is a sport. IF running is a sport, then running is dangerous.

8.     All sports are dangerous. Any … If activity X is a sport , then X is dangerous.

9.     Therefore, running is dangerous.

10.  Onions are fruits.All fruits are healthy. Anything that’s a fruit is healthy. If something is a fruit, then it’s healthy (If a food is fruit, then it’s healthy)

11.  Therefore, onions are healthy.

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1.     Homosexual sex is not reproductive.

2.     All sex that is not reproductive is wrong. = If a sexual behavior is not reproductive then it’s wrong. = Any sexual behavior that’s not reproductive is wrong . F

3.     Therefore, it’s wrong.

Homosexual sex isn’t reproductive. T

All (any) sexual behavior that is not reproductive is wrong =

If a sexual act is not reproductive, then it’s wrong. F

Therefore, homosexual sex is wrong.

1.      

2.     Socrates is a man.      If Socrates is a man, then he’s mortal.

3.     All men are mortal. =

If X is a man, then X  is mortal.

            Therefore, Socrates is mortal

4.     Suzy is a Spelman student. If Suzy is a Spelman student, then she plays PP.

5.     All Spelman students play ping pong.

Therefore, Suzy plays ping pong.

6.     Running is a sport [?]. If X is a sport, then X is dangerous. F If running is a sport, then it’s dangerous.

Therefore, running is dangerous.

7.     Onions are fruits (f). All / any  / if -> then (all?) (some?) Fruit is healthy ??

8.     If onions are fruits, then they are healthy to eat­­.

Therefore, onions are healthy to eat.