While the apostles of the new so-called "behavioral" theory present ample evidence of how often human beings make irrational financial decisions, it remains to be seen whether these decisions lead to predictable errors that create systematic mispricings upon which rational investors can readily and economically capitalize.

"Now you can trade the S&P 500 Index in real time" was the slogan in the newspapers for the first ETF. What kind of nut would do that?

Investing is not nearly as difficult as it looks. Successful investing involves doing a few things right and avoiding serious mistakes.

Surprise! The returns reported by mutual funds aren't actually earned by mutual fund investors.

I believe Washington should be a more active participant focusing on the issue of why corporate shareholders and mutual fund shareholders are not given fair treatment by corporate management and mutual fund management. We need to develop a national standard of fiduciary duty to ensure that these agents, if you will, are adequately representing the principles - pension beneficiaries and mutual fund shareholders - whom they are duty bound to serve.

While the apostles of the new so-called "behavioral" theory present ample evidence of how often human beings make irrational financial decisions, it remains to be seen whether these decisions lead to predictable errors that create systematic mispricings upon which rational investors can readily and economically capitalize.

But whatever the consensus on the EMH, I know of no serious academic, professional money manager, trained security analyst, or intelligent individual investor who would disagree with the thrust of EMH: The stock market itself is a demanding taskmaster. It sets a high hurdle that few investors can leap.