Canada, let’s agree, has much to teach the world. Following the signing of its new trade deal with the European Union, its lessons on the future of Britain and Europe are especially timely. The Economist just celebrated Canada’s distinctive achievements with a cover and supporting articles. The magazine was full of admiration for Canada’s liberal, outward-looking centrism. Yet what …

  Earlier this year I suggested that there was a problem with the tools we use to measure economic productivity: “The way we capture formal productivity data hasn’t kept up with modern ways of doing business. As a result, I believe economists underestimate productivity increases.” I have since refined that conclusion: Productivity models don’t properly capture gains created by the …

  There was a brief but impressive show of new U.S. aircraft technology this week. The problem is that the planes belong to the Chinese military. Aided in large part by espionage against the Pentagon and U.S. firms, the People’s Liberation Army air force unveiled its new J-20 stealth fighter, which it says is a so-called fifth-generation fighter like the …