If your economics class were graded on a curve and everyone agrees to study only half as much, everyone would get the same grade that they otherwise would earn. You, however, will earn an A if you study more than the others, a C if you study the same amount as others, and an F if everyone else studies more than you. You don't like studying, but you'd rather study and get an A than get a C without studying, or study and get a C than get an F without studying. If everyone else cuts back their studying, what is it in your best interest to do?