Timothy Geithner uses TurboTax?

According this song, he does.
.  
Putting the smartest people in charge of things is an interesting idea. It didn't seem to work with Herbert Hoover who seemed very competent at the time he was elected president. But who knows what would happened if Al Smith had been elected instead?

Contingency theory fits more with my experience of leaders. Of the bosses I have worked for, the ones who have been suited to a  particular job or role have done better than the ones who have had qualities that were believed to  be had by most good leaders.

Not that there is anything wrong with being smart.

Further Reading