I don't know Kaplan, but it's pretty obvious that the plain difference between the two terms is:sufficiency - if X, then Y is possiblenecessity - if and only if X, then Y is possibleSo for instance:sufficiency--If I have a Ferrari, I can drive around(but I could do it with a Volksawagon, too)necessity--If and only if I have a Ferrari, I can get from 0 to 60 in 8 seconds(I couldn't do it with a Volkswagon or any other kind of car)

Quote from: not guyminuslife on November 20, 2006, 02:40:43 PMI don't know Kaplan, but it's pretty obvious that the plain difference between the two terms is:sufficiency - if X, then Y is possiblenecessity - if and only if X, then Y is possibleSo for instance:sufficiency--If I have a Ferrari, I can drive around(but I could do it with a Volksawagon, too)necessity--If and only if I have a Ferrari, I can get from 0 to 60 in 8 seconds(I couldn't do it with a Volkswagon or any other kind of car)This is completely, abjectly WRONG.It's like watching a hideous, lethal highway wreck.

This is how I figured it out and it works for me.Sufficient: What you get (result)Necessary: What you did/do (action)This doesn't work in every case, but it helped me.

is this okay?sufficient:if i boil an egg, i can make egg salad.neccesary:if i made egg sald, then i boiled an egg?