Thursday, April 2, 2009

MORE TOK NOTES!

You cannot say an argument is true/untrue, only whether it is valid or invalid.

Truth is a property of a statement
Truth is Public, Eternal, and Independent

Arguments-
Does the conclusion follow the premise?
If so, valid

Validity of the argument is independent from the truth or falsity of the premise.

All ostriches are teachers
Mr. Steedman is an ostrich
Therefore, Mr. Steedman is a teacher

3 words used twice (check 1) Quantifer (check 2)\
IT IS VALID

Syllogisms do not create truth, but used properly valid argument in syllogism form can PRESERVE truth.

All A's are B's
Some A's are C's
Some B's are C's

VALID

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