Extraterrestrial Investors?

Megan McArdle has a series of posts defending the Efficient Market Hypothesis—the theory that human beings cannot consistently beat the market. On the other hand, there is Warren Buffett, who has a reputation for doing so anyway.

So… If human beings cannot consistently beat the market … would Warren Buffett be an extraterrestrial? (He might be a Monoid from the planet Functor.)

Maybe his remarks on taxes or population control are intended to soften us up for the invasion…