Research reveals that the higher you score on an IQ test, the more likely you are to fall for stereotypes, because you’re faster at recognizing patterns. And recent experiments suggest that the smarter you are, the more you might struggle to update your beliefs.

How do you know? It’s a question we need to ask more often, both of ourselves and of others. The power lies in its frankness. It’s nonjudgmental — a straightforward expression of doubt and curiosity that doesn’t put people on the defensive.

Part of the problem is cognitive laziness. Some psychologists point out that we’re mental misers: we often prefer the ease of hanging on to old views over the difficulty of grappling with new ones. Yet there are also deeper forces behind our resistance to rethinking. Questioning ourselves makes the world more unpredictable. It requires us to admit that the facts may have changed, that what was once right may now be wrong. Reconsidering something we believe deeply can threaten our identities, making it feel as if we’re losing a part of ourselves.

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Shapers” are independent thinkers: curious, non-conforming, and rebellious. They practice brutal, nonhierarchical honesty. And they act in the face of risk, because their fear of not succeeding exceeds their fear of failing.

Humility is often misunderstood. It’s not a matter of having low self-confidence. One of the Latin roots of humility means “from the earth.” It’s about being grounded — recognizing that we’re flawed and fallible. Confidence is a measure of how much you believe in yourself. Evidence shows that’s distinct from how much you believe in your methods. You can be confident in your ability to achieve a goal in the future while maintaining the humility to question whether you have the right tools in the present. That’s the sweet spot of confidence.