If You Are So Smart, Why Aren't You an Entrepreneur? Returns to Cognitive and Social Ability: Entrepreneurs versus Employees

The smarter you are, the more money you earn -- so far not very surprising. The interesting result, however, is that this works better for entrepreneurs than for employees.

So, in effect, if you are smart, you should be an entrepreneur.

I wonder how much of that effect can be explained by selection, both self-selection and external selection by bankruptcy.