[robertlagrant]

The person you're replying to was talking about futures traders. Where did you get a rich guy's son from?

[ceeplusplus]

Speculating on futures and other derivatives is basically what those rich guy's sons are doing in their hedge funds. Most hedge funds get worse returns than the S&P 500.

[jtbayly]

So... then let them? If they're losing money compared to what they could by doing nothing, I don't see the problem.

[scatters]

Getting worse returns than the S&P 500 is still valuable, if those returns are uncorrelated.