Cain has a BS in Mathematics and a Masters in Comp Sci from back in '71 when even knowing how to operate a computer generally implied you were MENSA material, and was a ballistics analyst, which for the record means 'has a brain'. I don't think there's a lot of room to question his intellect, and his business experience and NRA time pretty much rule out Ivory Tower limitations. He sucks at foreign affairs and he's not well-polished for prime time limelight TV, and those are legitimate things to criticize him about as a candidate but one or both would also apply to 99% or more of the population. I lean toward Gingrich or Romney myself but most definitely not over any fears of Cain's intellect. Almost everybody who doesn't have a lot of practice looks basically like their IQ was converted from Fahrenheit to Celsius when they get on any stage where they don't benefit from a friendly and/or relaxed environment, and nobody looks good under a microscopic especially when they speak for hours and hours and there's someone sitting back reviewing it to find the worst fifteen seconds to put on air or write about.