Those that regularly come into contact with people having diverse interests and viewpoints are more likely to come up with innovative ideas.

Good ideas may not want to be free, but they do want to connect, fuse, recombine. They want to reinvent themselves by crossing conceptual borders. They want to complete each other as much as they want to compete

Popular culture, on average, has been growing more cognitively challenging over the past thirty years, not less. Despite everything you hear about declining standards and dumbing-down, you have to do more intellectual work to make sense of today's television or games - much less the internet - than you did a few decades ago.

Keeping a slow hunch alive poses challenges on multiple scales. For starters, you have to preserve the hunch in your own memory, in the dense network of your neurons. Most slow hunches pass in and out of our memory too quickly, precisely because they possess a certain murkiness. You get a feeling that there's an interesting avenue to explore, a problem that might lead you to a solution, but then you get distracted by more pressing matters and the hunch disappears. So part of the secret of hunch cultivation is simple: write everything down.

We are often better served by connecting ideas than we are by protecting them.

It is extraordinary how safe flying has become. You are now statistically more likely to be elected president of the United States in your lifetime than you are to die in a plane crash. What an amazing achievement as a society! But what we end up focusing on are the catastrophic failures that are incredibly rare but happen every now and then.

How could so many intelligent people be so grievously wrong for such an extended period of time? How could they ignore so much overwhelming evidence that contradicted their most basic theories? These questions, too, deserve their own discipline: the sociology of error.