Yup. And the mangling of the English language by the genius who started the Iraq war is one of the documented facts out there. From what I understand he was also a little less than stellar at running the businesses that were handed to him prior to entering public life. He got lucky with the Texas Rangers, but shattered the myth of the successful Texas oilman.   

He's also generally acknowledged to be one of the worst presidents in modern history.   

Not the brightest bulb in the marquee by my measure.