Logic / Unit 2 Logic 050 short lesson, about 20 seconds
Precising Definitions
Captions available
The idea
A precising definition reduces vagueness by drawing a line for a purpose.
In practice
"Legally blind: corrected acuity of 20/200 or worse." The law needs a cutoff; ordinary usage doesn't have one.
Where people slip
The line's placement is a decision, defensible or not — it isn't discovered.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
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