Exactly - the issue with Bush isn't that he's dense (which he is - frankly Intelligence is a big thing for me... and to go from a Rhodes Scholar to Bush is frankly quite sad) - the issue is as John Ford correctly said if he doesn't know about something he doesn't seem interested in learning about it.
Even if you don't have the most robust intellect - a healthy curiosity should be able to get you through. Bush doesn't even have that.
Ummm, Bush had a HIGHER average at Yale than Kerry, but a disgraceful like 76 to 74, but Bush's was two points higher. It's his accent that makes northerner elistist liberals think he is stupid, he actually is quite smart.