All, some and none
Quantity words say how much of a group a claim is about. In logic "some" means at least one, the opposite of "all are" is "some are not", and an "all" claim can't be turned around.
Depth 1 · Foundation
You know what "some" means in logic, can state the opposite of an "all" claim, and can draw an "all" claim as one circle inside another and see why it doesn't turn around.
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- 1
Foundation
You know what "some" means in logic, can state the opposite of an "all" claim, and can draw an "all" claim as one circle inside another and see why it doesn't turn around.
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What's still between you and All, some and none, depth 1, in the order you can learn it.
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