Contradictory and Contrary Statements

Question 1

Two Categorical Relationships

Answer 1

Opposition and Equivalence

Question 2

Four Types of Opposition

Answer 2

Contradiction, Contraries, Subcontraries, and Subalternates

Question 3

What’s the Rule of Contradiction?

Answer 3

Contradictories are statements that differ in both quality and quantity. So, A-O and I-E are examples of contradictories.

Question 4

What’s the First Law of Opposition?

Answer 4

Contradictories cannot at the same time be true nor at the same time be false. Could A-O or I-E be true or false at the same time? No, they cannot.

Question 5

What’s the Rule of Contraries?

Answer 5

Two statements are contrary if they are both universal but differ in quality. So, A and E are the only contraries.

Question 6

What’s the Second Law of Opposition?

Answer 6

Contraries can’t be true at the same time, but can be false at the same time.