I suspect millions of people from my generation probably have comparable stories to tell: if not of sports simulations then of Dungeons & Dragons, or the geopolitical strategy of games like Diplomacy, a kind of chess superimposed onto actual history.

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.

Legendary innovators like Franklin, Snow, and Darwin all possess some common intellectual qualities—a certain quickness of mind, unbounded curiosity—but they also share one other defining attribute. They have a lot of hobbies.

One of the stories I love is how Gutenberg’s printing press set off this interesting chain reaction, where all of a sudden people across Europe noticed for the first time that they were farsighted, and needed spectacles to read books (which they hadn’t really noticed before books became part of everyday life); which THEN created a market for lens makers, which then created pools of expertise in crafting lenses, which then led people to tinker with those lenses and invent the telescope and microscope, which then revolutionized science in countless ways.

In a peer network, no one is officially in charge. It doesn't have a command hierarchy. It doesn't have a boss. So, all the decisions are somehow made collectively. The control of the system is in the hands of everyone who is a part of it.

The patterns are simple, but followed together, they make for a whole that is wiser than the sum of its parts. Go for a walk; cultivate hunches; write everything down, but keep your folders messy; embrace serendipity; make generative mistakes; take on multiple hobbies; frequent coffeehouses and other liquid networks; follow the links; let others build on your ideas; borrow, recycle; reinvent. Build a tangled bank.

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