Skip to main content

Mood and Figure

This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.

State

Mood is the three-letter sequence of statement forms; figure (1–4) is the middle term's position. Together they name all 256 possible syllogisms.

Show

All M are P; All S are M; ∴ All S are P — mood AAA, figure 1. The medievals called it Barbara.

Watch for

Of the 256, only 15 are valid on the Boolean reading. Naming forms is how you look violations up.