“A well-meaning team of people can sometimes make horrible decisions that no single individual would make. Groupthink, and an unwillingness to disagree with the bosses, was too often a problem at NASA... None of us is as dumb as all of us.”

“None of us is as dumb as all of us. It means that when you get a group of people together to make a critical decision, groupthink can set in. There's all this technical information, a critical decision needs to be made, and everyone starts marching in the same direction. There might be some people who think it's the wrong decision, but they don't say anything. They just remain a part of the group. We've learned that groups can make stupid decisions that no single individual in the group would make.”

“Sometimes the people who don’t know us very well make better mirrors. Too often, our friends feel they have to stand off to the side so they can protect us from the hurt of seeing our true selves.”

“If we all make systematic mistakes in our decisions, then why not develop new strategies, tools, and methods to help us make better decisions and improve our overall well-being? That's exactly the meaning of free lunches- the idea that there are tools, methods, and policies that can help all of us make better decisions and as a consequence achieve what we desire-pg. 241”

“What are the odds that people will make smart decisions about money if they don’t need to make smart decisions—if they can get rich making dumb decisions?”

“It means that the things that make us human often make us ill.”