Some people, even very smart ones, have a slight medical problem similar to the dyslexia, only in a very mild form. They make mistakes in their speech when they try to think and talk at the same time, especially in public and under stress.
It is not as obvious as the stuttering or other major problems, so most stupid people do not realise it.
When faced with a man in a responcible position and great career who occasionally mispronounces a word but writes perfectly well, they prefer to think that such person is an idiot - it makes them feel better.
The most obvious examples are Dan Quale and GWB but lots of others suffer from that. Many of them shy people who do not choose public positions - scientists, mathematicians, ets.
I am known to forget a word in the middle of a sentence myself, even though my IQ is 130.
The fact that american public is so ignorant and likes to make fun of people's medical problems (hardly could call such a trifle a disability) tells a lot about your average american.
miko
