Discussion Questions

I. Introduction to the Square of Opposition
(1) How does learning the square of opposition help a student to understand the implications of a priori truths?
(2) How are inference and implications used to help logically evaluate and analyze propositions?
(3) Why is this learning tool called the square of opposition?
(4) How can the use of grid-based, deductive logic puzzles help illustrate how to navigate through determining AEIO propositional truth and falsity?

II. Contradiction
Describe the colloquial misuses of the term “contradiction,” and then describe how you intend to explain logical contradiction.

III. Contrariety and Subcontrariety
Compare/contrast the definitions “contrary” and “contrariety.” Be prepared to explain the subtle differences between the two. These are commonly confused terms.

IV. Subimplication and Superimplication
(1) Explain why all blueberries are berries, but not all berries are blueberries.
(2) Why does the truth of universals flow to the corresponding particulars, but the truth of particulars does not flow to the corresponding universals?
(3) Explain why the falsity of particulars flows to the corresponding universals, but the falsity of universals does not flow to the corresponding particulars.