A Class Room Logic / Deductive and Inductive, with Special Application to the Science and Art of Teaching

by George Hastings McNair

(2) All men have the power of speech,

You are a man,

∴ You have the power of speech.

(3) Some men are wise,

All men are rational,

∴ Some rational beings are wise.

(2a) Illustrate by syllogism the fallacy of undistributed middle. An easy way is to use the middle term as the predicate of two A premises. This yields the fallacy because an A proposition does not distribute the predicate.

The illustration: distributed terms underscored.

All true teachers are students,

All scholars are students,