The Certainty of Donald Rumsfeld (Part 1)

I was often struck by the difference between Rumsfeld and Robert McNamara. McNamara said that he never answered the question he was asked but rather the question that he wanted to be asked. Rumsfeld, on the other hand, would never answer the question he was asked or any other question — Ask Rumsfeld a question, and all you get is evasions. But are they just evasions or do they reveal a lack of substance? And McNamara expressed regret