Logic / Unit 3 Logic 092 short lesson, about 20 seconds
The Categorical Syllogism
Captions available
The idea
A categorical syllogism is two categorical premises and a categorical conclusion, built from exactly three terms, each appearing twice.
In practice
All M are P; All S are M; therefore All S are P.
Where people slip
Three terms, exactly. A fourth term — even one hidden by synonym-shuffling — breaks the machine.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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