It's an interesting look into the mind of Robert McNamara, but ultimately it's just an attempt on his part to whitewash all of his “mistakes” through sophistry. It's particularly sad that even after all his apparent character growth and introspection, he continues to subscribe to beliefs like:
> “How much evil must we do in order to do good?”
> “We have certain ideals, certain responsibilities. Recognize that at times you will have to engage in evil, but minimize it.”

And that was right after saying:
> “Human beings must stop killing other human beings.” And that's a belief that I shared. I shared it then and I believe it even more strongly today.

Conveniently, McNamara is not questioned about his Project 100,000 (pejoratively known as the “Moron Corps”) which was an attempt to (allegedly) elevate low-IQ people out of poverty by filling his ranks with cannon fodder for the Vietnam War.

How ironic that the title of the documentary “The Fog of War” is given an alternative definition as “War is so complex it's beyond the ability of the human mind to comprehend all the variables” while there is no mention of the tremendous financial/political interests of the military-industrial complex that drive America's permanent war economy.