Logic / Unit 2 Logic 056 short lesson, about 20 seconds
Too Broad, Too Narrow
Captions available
The idea
A definition is too broad when it admits non-members, too narrow when it excludes members.
In practice
"Bird: an animal that flies." Too broad — bats get in. Too narrow — penguins are shut out. Both failures, one definition.
Where people slip
Always run both tests. Fixing one failure routinely creates the other.
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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