Some things about war have changed. Its unpredictability has not. Its propensity to spiral out of control has not. Its tendency to grow beyond its planned scope has not. Its evil has not. These things are war and these things will never change. They only become more dangerous in a nuclear age.
“You make one mistake and you’re going to destroy nations,” Robert McNamara warned. Therefore, we must do everything in our power to avoid mistakes or situations in which mistakes can be made. Anything else will lead to unnecessary death and destruction.
Although the words are McNamara’s, the “lessons” are McNamara’s as perceived by Errol Morris. Even so, it is clear that Robert McNamara wished to pass along his knowledge to save lives and to save nations. McNamara has learned these lessons the hard way. Although the fog of war will shroud our vision and cloud our judgment, considering these lessons will help us minimize the consequences of our inevitable mistakes.
Jump to a lesson:
Lesson 1: Empathize with Your Enemy
Lesson 2: Rationality Will Not Save Us
Lesson 3: There’s Something Beyond One’s Self
Lesson 4: Maximize Efficiency
Lesson 5: Proportionality Should Be a Guideline in War
Lesson 6: Get the Data
Lesson 7: Belief and Seeing Are Often Both Wrong
Lesson 8: Be Prepared to Re-examine Your Reasoning
Lesson 9: In Order To Do Good, You May Have To Engage in Evil
Lesson 10: Never Say Never
Lesson 11: You Can’t Change Human Nature