Convincing other people to think again isn’t just about making a good argument — it’s about establishing that we have the right motives in doing so. When we concede that someone else has made a good point, we signal that we’re not preachers, prosecutors, or politicians trying to advance an agenda. We’re scientists trying to get to the truth. “Arguments are often far more combative and adversarial than they need to be,” Harish told me. “You should be willing to listen to what someone else is saying and give them a lot of credit for it. It makes you sound like a reasonable person who is taking everything into account.

When our commitment is wavering, the best way to stay on track is to consider the progress we've already made. As we recognize what we've invested and attained, it seems like a waste to give up, and our confidence and commitment surge.

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Character is often confused with personality, but they’re not the same. Personality is your predisposition — your basic instincts for how to think, feel, and act. Character is your capacity to prioritize your values over your instincts.

When we find out we might be wrong, a standard defense is “I’m entitled to my opinion.” I’d like to modify that: yes, we’re entitled to hold opinions inside our own heads. If we choose to express them out loud, though, I think it’s our responsibility to ground them in logic and facts, share our reasoning with others, and change our minds when better evidence emerges.

It’s more important to be good ancestors than dutiful descendants. Too many people spend their lives being custodians of the past instead of stewards of the future. We worry about making our parents proud when we should be focused on making our children proud. The responsibility of each generation is not to please our predecessors — it’s to improve conditions for our successors.

If you’re going to build a strong culture, it’s paramount to make diversity one of your core values. This is what separates Bridgewater’s strong culture from a cult: The commitment is to promoting dissent. In hiring, instead of using similarity to gauge cultural fit, Bridgewater assesses cultural contribution.* Dalio wants people who will think independently and enrich the culture. By holding them accountable for dissenting, Dalio has fundamentally altered the way people make decisions. In a cult, core values are dogma. At Bridgewater, employees are expected to challenge the principles themselves. During training, when employees learn the principles, they’re constantly asked: Do you agree? “We have these standards that are stress tested over time, and you have to either operate by them or disagree with them and fight for better ones,” explains Zack Wieder, who works with Dalio on codifying the principles. Rather than deferring to the people with the greatest seniority or status, as was the case at Polaroid, decisions at Bridgewater are based on quality. The goal is to create an idea meritocracy, where the best ideas win. To get the best ideas on the table in the first place, you need radical transparency. Later, I’m going to challenge some of Dalio’s principles, but first I want to explain the weapons he has used to wage a war on groupthink.

At its core, comedy is an act of rebellion. Evidence shows that compared to the norms in the population, comedians tend to be more original and rebellious — and the higher they score on these dimensions, the more professional success they attain.