Thinking like a scientist does not mean you need to own a telescope or a microscope, but that you favor humility over pride and curiosity over conviction: You know what you don’t know, and you’re eager to discover new things. You don’t let your ideas become your identity. You look for reasons why you might be wrong, not just reasons why you must be right.

You listen to ideas that make you think hard, not just the ones that make you feel good. And you surround yourself with people who can challenge your process, not just the ones who agree with your conclusion.

The whole point of rethinking is to change your mind in the face of better logic or stronger evidence—not to just roll the dice and say, I’m going to pick a random new opinion today.

An attitude of wisdom as acting on the best information you have while doubting what you know. And for that you need humility.

But people misunderstand what humility is. Confident humility is being able to say, “I don’t know and I might be wrong,” or “I haven’t figured it out yet,” which is essentially believing in yourself but doubting your current knowledge or skills.

This means that when you form an opinion, you make a list of conditions that would change your mind.

That keeps you honest, because once you get attached to an opinion, it’s really hard to let go. But if you identify factors that would change your mind up front, you keep yourself flexible.