“The more scientists discover, the bigger the evolution puzzle has become. Tool-making itself has now been pushed back at least two million years, and modern tool kits emerged very gradually over 300,000 years in Africa. Meanwhile, Neanderthals are now known to have had brains that were bigger than ours and to have inherited the same genetic mutations that facilitate speech as us. Yet, despite surviving until 30,000 years ago, they hardly invented any new tools, let alone farms, cities and toothpaste. The Neanderthals prove that it is quite possible to be intelligent and imaginative human beings (they buried their dead) yet not experience cultural and economic progress.
“Scientists have so far been looking for the answer to this riddle in the wrong place: inside human heads. Most have been expecting to find a sort of neural or genetic breakthrough that sparked a “big bang of human consciousness,” an auspicious mutation so that people could speak, think or plan better, setting the human race on the path to continuous and exponential innovation.
“But the sophistication of the modern world lies not in individual intelligence or imagination. It is a collective enterprise. Nobody—literally nobody—knows how to make the pencil on my desk (as the economist Leonard Read once pointed out), let alone the computer on which I am writing. The knowledge of how to design, mine, fell, extract, synthesize, combine, manufacture and market these things is fragmented among thousands, sometimes millions of heads. Once human progress started, it was no longer limited by the size of human brains. Intelligence became collective and cumulative.”
. . .
“Trade was the most momentous innovation of the human species; it led to the invention of invention.”
Late last week we took a quick look at Matt Ridley’s new book The Rational Optimist: How Prosperity Evolves. Ridley further explores the ideas at the heart of his book in an excellent article on Humans: Why They Triumphed in the Wall Street Journal.