LessonsThe First Figure: Conditions of Validity and Four Productive MoodsQuiz

In the first figure the middle term is the minor premise’s predicate and the major premise’s subject. The two production conditions are an affirmative minor and a universal major.

Of sixteen possible combinations, twelve are unproductive and four productive:
1. A minor + A major → A conclusion.
2. A minor + E major → E conclusion.
3. I minor + A major → I conclusion.
4. I minor + E major → O conclusion.

The goal is not just to remember their names, but to test term position, premise conditions and entailment in unfamiliar arguments. The next lesson begins the conditions and productive moods of the second figure.

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Consolidated summary of the first figure

The First Figure: Conditions of Validity and Four Productive Moods

In the first figure the middle term is the minor premise’s predicate and the major premise’s subject. The two production conditions are an affirmative minor and a universal major.

Of sixteen possible combinations, twelve are unproductive and four productive:
1. A minor + A major → A conclusion.
2. A minor + E major → E conclusion.
3. I minor + A major → I conclusion.
4. I minor + E major → O conclusion.

The goal is not just to remember their names, but to test term position, premise conditions and entailment in unfamiliar arguments. The next lesson begins the conditions and productive moods of the second figure.