Logic / Unit 3 Logic 071 short lesson, about 20 seconds
I Statements
Captions available
The idea
I statements — Some S are P — assert that at least one member of S is in P.
In practice
"Some doctors are pilots." One suffices.
Where people slip
In logic, "some" means at least one — never "several," never "some but not all."
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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