Lesson 8: Be Prepared to Re-examine Your Reasoning

If Lesson 7 shows us that is that we perceive, not see, reality, then his next lesson is how to fix that problem. We are not omniscient. We make mistakes. We can’t trust ourselves. If this is the case, then McNamara suggests we be prepared to re-examine our reasoning.

One part of re-examining our reasoning is remaining open-minded when making decisions. If we know we are not perfect, we should remain realistic about the chance of being wrong. Bring in people who disagree. Listen to them. If their questions can’t be answered, there is a good chance you are headed down a wrong path. This was certainly the case with the 2003 Invasion of Iraq when President Bush, Vice-President Cheney, Secretary of Defense Rumsfeld, and other national security advisors sidelined Colin Powell, Richard Armitage, and others in the State Department who disagreed that Saddam Hussein possessed weapons of mass destruction or links to Al-Qaeda.

Another part of this lesson is listening to our allies. McNamara’s belief is that the United States should never apply political, economic, or military power unilaterally. Continue reading

Lesson 7: Belief and Seeing Are Often Both Wrong

A common aphorism suggests that “seeing is believing,” suggesting that we shouldn’t believe everything we hear. Only when we see something with our own two eyes can we be certain of the truth. Of course, this is wrong. Instead, “believing is seeing.” Our minds are not blank slates that record data. Our biases and beliefs color our perception, changing our interpretation of what we see. McNamara’s advice is to understand that belief and seeing are often both wrong.

As an example, McNamara walks us through the Tonkin Gulf Incident. On August 2, 1964, the USS Maddox was attacked by North Vietnamese patrol craft. Two days later, the Maddox and the Turner Joy reported being attacked once again. In response, President Lyndon Johnson asked for, and was given by Congress, a blank check to combat the North Vietnamese.

As it turns out, we were not attacked the second day, although that’s not the point. Continue reading