There is a romantic idea about conversation, learning, and open-mindedness: “Joe and I don’t agree on much, but we respect each other, and learn a heck of a lot from each other.” If you want to learn and grow, get out of your comfort zone and spend time talking to people who disagree with you and who will challenge you. Right?
Wrong. In fact, you learn more from people who mostly agree with you.
The premise: Rarely is your worldview turned upside down in a single conversation over lunch. Rarely is your mind truly blown in an hour. Instead, most learning happens on the margins. A nugget here, a nugget there. Brick by brick you assemble a house of knowledge; you iteratively form and evolve a worldview.
The question: With what kinds of people do you have conversations that lead to an iterative, valuable insight?
The answer: People with whom you agree on 99.9% of issues already.
In order to even have a coherent conversation with someone, you need to share a language, basic values, assumptions, conversational norms. A Creationist learns little about the origins of the world from an Evolutionist. A lab scientist working on a vaccine doesn’t learn much from someone who thinks vaccines cause autism. Nobody learns anything if civility isn’t mutually valued. If these basic table stakes aren’t met — 98% of the game, in my view — there’s no productive conversation to be had.
When you have broad foundational agreement, learning in conversation happens best when there’s still further agreement on the next 1% of possible agreement. Two internet company CEOs who both speak English who are both convinced of technology’s wonders will have no problem at all breaking bread and having a lively conversation. But for learning’s sake, it’d be even better if they agreed on a number of industry-specific beliefs. If they’re aligned on the booming future of mobile devices, for example, then they can dive deep and explore possible disagreement on how to, say, best serve ads to users on an iOS device.
As Weinberger says, “It’s how culture advances. It’s how knowledge advances.” And it’s how individual intellectual growth advances, too. Some of my best, most mind-expanding conversations have occurred with good friends who agree with me on almost everything–but not quite everything.
Bottom Line: Want to learn and get smarter by talking to people? Seek out those who agree with you on 99.9% of things, and then push, push, push at the niche-y, hyper-specific areas of disagreement. It’s not about groupthink; it’s not about confirmation bias. It’s about learning on the margin.