However, I mean something more than this. I mean that human achievements are always and everywhere collective. Every object and service you use is the product of different minds working together to invent or manage something that is way beyond the capacity of any individual mind. This is why central planning does not work. Ten million people eat lunch in London most days; how the heck they get what they want and when and where, given that a lot of them decide at the last minute, is baffling. Were there a London lunch commissioner to organise it, he would fail badly. Individual decisions integrated by price signals work, and work very well indeed.
And here is the key insight from evolution. Our brains grew big long, long before we achieved civilisation. We’ve had 1,200cc of intelligence for half a million years: even Neanderthals had huge brains. For 99 per cent of that time we were just another hard-pressed species, as bottle-nosed dolphins are today, and around 75,000 years ago we teeter-ed on the brink of extinction.
What changed was not some bright spark of a new gene being turned on, but that we began to exchange and specialise, to create collective intelligence, rather than rely on individual braininess. To put it another way, dozens of stupid people in a room who talk to each other will achieve far more than an equal number of clever people who don’t. The internet only underlines this point. Human intelligence is a distributed, collaborative phenomenon
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