In the long run, as the Nobel laureate Paul Krugman has written, productivity is almost everything. But what drives productivity? The answer is know-how. It is because humanity has discovered, developed, deployed, and disseminated useful knowledge that an ever-rising proportion of the world’s population is at last escaping the “poor, nasty, brutish and short” lives of our ancestors, pithily described by the philosopher Thomas Hobbes in the 17th century.Knowledge is also somewhat paradoxical. It is most productive when freely available. But the incentive to create it depends on the ability to restrict its use. The former consideration justifies dissemination. The latter justifies control. How, then, is this balance working?The latest World Economic Outlook offers an illuminating chapter on how globalisation has been helping to spread useful knowledge. This analysis sheds light on the contemporary landscape of innovation, on the current diffusion of knowledge, on what is happening to productivity, on the role of global value chains and on the impact of competition on creation and use of knowledge.
Perhaps the most significant conclusion is on the shift in the location of innovation. If this is measured by what are called “patent families”, by which is meant patents filed in more than one jurisdiction (a measure of their significance), the US, Japan and the big three European economies (Germany, France and the UK) are still dominant. China is already second in terms of spending on research and development, only a little behind the US. In the aggregate stock of patents, China is also already ahead of the UK. Strikingly, the annual rate of patenting is stagnant in the big five advanced economies, while it is soaring in the emerging world, and above all in China. (See charts.)