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Oct 2

Of the Effect of a Change of Information

Suppose it is learned that
Any S is P
Not P is not S
Some P is S
Then S receives an addition to its comprehension
not S to its extension
P an addition to its extension
Any S is not P
not P receives an addition to its extension
not S receives an addition to its extension
Also S receives an indefinite addition to its extension

If are looking at an S find it to be P.
Some S is P
This adds to the extension of P - supposing we know what S
Any S is not P
This adds to the comprehension of S - supposing we know something of not P