Matt Ridley says people around the world have become healthier, happier, cleverer, cleaner, kinder, freer, more peaceful, and more equal in recent years. He’s written a book on the topic called The Rational Optimist.
Why have we seen all these improvements? Ridley discussed his notion of a “collective brain” during a Hayek Lecture this afternoon at Duke University. Click play below to watch the 1:00:33 event.
