Socialism for class grades

Snopes.com says that the attributions in some versions of this viral email are wrong and there is no legitimate recorded instance of this actually happening. Nevertheless, this tale seems apropos:

An economics professor at a university said he had never failed a single student, but had once failed an entire class.

The students insisted that socialism worked since no one would be poor and no one would be rich, a great equalizer. The professor then said, "OK, we will have an experiment in this class on socialism."

"All grades will be averaged and everyone will receive the same grade so no one will fail and no one will receive an A."

After the first test the grades were averaged and everyone got a B. The students who had studied hard were upset while the students who had studied very little were happy.

But, as the second test rolled around, the students who had studied little studied even less and the ones who had studied hard decided that since they couldn't make an A, they also studied less. The second Test average was a D.

No one was happy. When the 3rd test rolled around the average grade was an F.

The scores never increased as bickering, blame, name calling, all resulted in hard feelings and no one would study for anyone else.

To their great surprise all failed. The professor told them that socialism would ultimately fail because the harder people try to succeed the greater their reward (capitalism) but when a government takes all the reward away (socialism) no one will try or succeed.