Lesson 23: Truth and Validity Flashcards
1
Q
When is a syllogism valid?
A
When the conclusion is necessarily true because the premises are true.
2
Q
When is a syllogism invalid?
A
When a syllogism has true premises and a false conclusion.
3
Q
What makes a conclusion true?
A
If the premises in a valid syllogism are true, the conclusion must be true.
4
Q
When is a syllogism sound?
A
When the syllogism is valid and the premises are true.
5
Q
Can the premises in a syllogism be false?
A
Yes, but that makes it an invalid argument. If the premises were true, that requires the conclusion to also be true.
