Socialism will it work?

I was on Facebook the other day and I ran across this story.  It seems that a professor (I found out he was teaching at Texas Tech  from Snopes.com) had an interesting experiment with his class.  The story follows.

"An economics professor at a local college said that he had never failed a single student before, but had recently failed an entire class.

That class had insisted that Obama's socialism worked and that no one would be poor and no one would be rich - a great equaliser.

To counter this, the professor said, "OK, we will have an experiment in this class on Obama's plan".

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

After the first test, the grades were averaged and everyone got a B.

The students who studied hard were upset and the students who studied little were happy.

As the second test rolled around, the students who studied little, studied even less and those who had previously studied hard, decided they wanted a free ride. So they too studied little.

The second test average was a D!

No one was happy.

When the 3rd test rolled around, the average was an F.

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

All failed, to their great surprise, and the professor told them that socialism would also ultimately fail because when the reward is great, the effort to succeed is great but when government takes all the reward away, no one will try or want to succeed.

Couldn't be any simpler than that."

I thought this was a great example of how socialism would fail miserably.  But as I read some of the posts on Snopes.com I discovered that many of the posts said that the professor didn't understand what Socialism was.  I decided that perhaps I didn't understand what socialism is either.  I went to Wikipedia.com and looked it up.  As it turns out there are several different ideas all called socialism.  From my reading and my understanding I do believe that this professor was right with regard to what socialism means under some definitions and wrong under others.  All that aside the principle learned from this experiment is a valid strong argument against a socialist type society, wherein all work, and all profit or product produced from that work is divided equally among the entire population.  "You cannot multiply wealth by dividing it." 
Much the same as you cannot legislate morality, you cannot have people give their best and strive to achieve more and more if there is no reward.  If I had a job as a door greeter at Walmart, (nothing against that job) and I had all the same perks and benefits and money as a Neurosurgeon, who spent 8 years in college and medical school plus a seven year residency for a grand total of 15 years after high school, why on earth would I be a slave to an education for an additional 15 years?  Bragging rights?  That is a little too far fetched in my opinion.  In a nutshell, socialism cant work because human nature is to be lazy, and to want something for nothing.  Many overcome that tendency but many do not.  Until you can change the true nature of the human being you wont be able to pull off socialism of any type.  I am sure many will disagree with me and that is just fine.  It makes this country I live in a fantastic place to live because I can express my opinion and so can you.

That is all