Logic / Unit 4 Logic 150 short lesson, about 20 seconds
Affirming the Consequent
Captions available
The idea
If p then q; q; therefore p. Invalid — always.
In practice
If it rained, the street's wet. The street's wet. "So it rained" — or a hydrant burst.
Where people slip
This is MP's evil twin, and it feels valid. Most real-world diagnostic errors are this form in a lab coat.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
- Nothing yet depends on this.
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