The most highly paid hedge fund manager made $1.7 billion in 2006, according to the New York Times. That's 28,333 times more than the roughly $60,000 that the median U.S. family made in 2006.

Hedge funds are a good business to be in if you can attract lots of capital and earn high returns from investing it. That's because hedge fund managers take 2% of the assets under management as an annual fee. And they earn 20% of the profits they make for their investors. James Simons, the 69-year-old former math professor, who pulled in $1.7 billion, uses complex computer-driven mathematical models to make bets on stocks, bonds and commodities at his fund Renaissance Technologies. Simons fee is 5% of assets under management and 44% of profits. But he beats the competition regularly. In 2006, the $6 billion Medallion fund posted gross returns of 84%; 44% after fees.

A doctor asked me why, if he was such as hot shot, these money people made so much more than he did. The answer is fairly simple. Doctors get paid on a per patient basis. No matter how many patients the doctors take on, there are only seven days a week and 24 hours in a day. And if a doctor takes some time off from work, that further limits the available hours. And the pay for many of the procedures doctors perform is limited by government regulations.

Ours is a society that rewards making money. And hedge fund and private equity managers make more of it for their investors than anyone else. As they love to say, if you pay peanuts, you get monkeys.

Peter Cohan is President of Peter S. Cohan & Associates, a management consulting and venture capital firm. He also teaches management at Babson College and edits The Cohan Letter.