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Remember, it is not an argument; it is an open exploration of what's true.

Radical open-mindedness and radical transparency are invaluable for rapid learning and effective change. Learning is the product of a continuous real-time feedback loop in which we make decisions, see their outcomes, and improve our understanding of reality as a result. Being radically open-minded enhances the efficiency of those feedback loops, because it makes what you are doing, and why, so clear to yourself and others that there can't be any misunderstandings.

radical open-mindedness, which is motivated by the genuine worry that one might not be seeing one's choices optimally. It is the ability to effectively explore different points of view and different possibilities without letting your ego or your blind spots get in your way.

Open-minded people seek to learn by asking questions; they realize how little they know in relation to what there is to know and recognize that they might be wrong; they are thrilled to be around people who know more than they do because it represents an opportunity to learn something.

Having open-minded conversations with believable people who disagree with you is the quickest way to get an education and to increase your probability of being right.

I have found it helpful to think of my life as if it were a game in which each problem I face is a puzzle I need to solve. By solving the puzzle, I get a gem in the form of a principle that helps me avoid the same sort of problem in the future. Collecting these gems continually improves my decision making, so I am able to ascend to higher and higher levels of play in which the game gets harder and the stakes become ever greater.

treasured thoughtful disagreement with them as a way of learning and raising our odds of making good decisions,

almost all "cases at hand" are just "another one of those," identifying which "one of those" it is, and then applying well-thought-out principles for dealing with it.

Baseball Cards, which I mentioned in the first part of this book. Just as a baseball card compiles the relevant data on a baseball player, helping fans know what that player is good and bad at, I decided that it would be similarly helpful for us to have cards for all of our players at Bridgewater.

classify these situations into types and have good principles for dealing with them, we will make better decisions more quickly and have better lives as a result. Having a good set of principles is like having a good collection of recipes for success.