We are neurons

British Author Matt Ridley recently gave a stimulating and entertaining talk at TED. The central topic was about "mating ideas," but the talk (which was engaging all the way through) took an surprising turn toward the end when Ridley announced that he doesn't care whether some individuals have a somewhat higher IQ than others. Smart individuals don't necessarily make for a smart society--he suggested that Neanderthals were smart individuals, but they didn't last. What do we modern humans have the Neanderthals lacked? We exchange things and ideas (the evidence suggests that the Neanderthals didn't exchange items and didn't have any meaningful division of labor, not even a sexual division of labor). We function together and we are able to create things that nobody on earth knows how to make individually. Who knows how to make a computer mouse? Nobody. The "team" that makes computer mice includes the coffee-grower who provides coffee for the guy who works on an oil rig, who pumps out oil in order to allow a chemist to make plastic for the mouse. But there are 1,000,000 other members of this team. We are prolific exchangers of ideas, and that is what we have over all other species. Each of us functions like a neuron, networking incessantly, enabling the whole to be much greater than the sum of the parts. Smart individuals (despite how interesting they sometimes seem) are often dead ends. What really makes a society fly is when individuals have a propensity to exchange ideas, a built-in drive for mating their ideas, allowing their ideas to go where no smart individual (or even many groups of smart individuals) could have ever anticipated. For an interesting epilogue, consider the work of David Sloan Wilson, who suggests that humans are half-bee (we're not quite there), and that religion serves as the binding force.

Continue ReadingWe are neurons

The human edge: our ideas have sex

In the Wall Street Journal, Matt Ridley argues that human beings haven't flourished because of anything we do individually. Rather, it is our ability to share and to building upon previous ideas of others--it is our "collective intelligence":

The notion that exchange stimulated innovation by bringing together different ideas has a close parallel in biological evolution. The Darwinian process by which creatures change depends crucially on sexual reproduction, which brings together mutations from different lineages. Without sex, the best mutations defeat the second best, which then get lost to posterity. With sex, they come together and join the same team. So sex makes evolution a collective and cumulative process in which any individual can draw on the gene pool of the whole species. And when it comes to gene pools, the species with gene lakes generally do better than the ones with gene ponds—hence the vulnerability of island species to competition with continental ones.

It is precisely the same in cultural evolution. Trade is to culture as sex is to biology. Exchange makes cultural change collective and cumulative. It becomes possible to draw upon inventions made throughout society, not just in your neighborhood. The rate of cultural and economic progress depends on the rate at which ideas are having sex. . . . So here is the answer to the puzzle of human takeoff. It was caused by the invention of a collective brain itself made possible by the invention of exchange. . . . Prosperity consists of getting more and more narrow in what you make and more and more diverse in what you buy. Self-sufficiency—subsistence—is poverty.

Ridley concludes that this inexorable building upon prior ideas by sharing them is ultimately a "cheery" one (he points to reduced child mortality and increased per capita income worldwide), despite the occasional setbacks.

Continue ReadingThe human edge: our ideas have sex