I think it is pretty clear that neither extreme is desirable. Of course someone with book smarts may not really understand the world if it is not coupled with common sense/street smarts. However, I disagree that advanced learning does not assist a world leader, such as a US president, in making better decisions. Do you really want a high school drop out making decisions about Americas economic policy? Or how about foreign policy from a president whos grasp of history is rudimentary at best?