The difference between an economist and an entrepreneur:
Entrepreneur is walking along and sees a $10 bill. He picks it up and puts it in his pocket.
The economist is walking along and sees a $10 bill. He thinks to himself “this can’t be possible in an efficient market” and continues walking.
Such are the responses of Rustico and Econ Prof.
Both are right. If you look carefully at specific deals, there are some that will work. I suspect, though, there will be more deals that work in a couple years.