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6 Cards in this Set

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Valid argument

An argument whose premises are positively maximally relevant to the conclusion

Invalid Argument

a deductive argument whose premises are not maximally relevant (positive) to the conlcusion

Sound argument

An argument which is valid hand has all true premises

Unsound Argument

A deductive argument which is either invalid or has false premises

Deductive argument process

1. If the premises were true, would the conclusion be guaranteed to be true?


1a. YES: Go to step 2


1b. NO: Invalid, Unsound



2.Are all the premises in this line of argument true?


2a. YES: Sound


2b. NO: unsound

Rational Dilemma

A situation where reason seems to pull you in two inconsistent directions.