The results of the Ming collapse were devastating. Between 1580 and 1650 conflict and epidemics reduced the Chinese population by between 35 and 40 per cent. What had gone wrong? The answer is that turning inwards was fatal, especially for a complex and densely populated society like China’s. The Ming system had created a high-level equilibrium – impressive outwardly, but fragile inwardly. The countryside could sustain a remarkably large number of people, but only on the basis of an essentially static social order that literally ceased to innovate. It was a kind of trap. And when the least little thing went wrong, the trap snapped shut.

Some [Soviet] state enterprises were actually subtracting value from the raw materials they processed. Just as Hayek had warned, in the absence of meaningful prices, resources were misallocated; corrupt officials restricted output to maximize their own illicit gains; workers pretended to work and, in return, managers pretended to pay them.

What if history is not cyclical and slow moving but arrhythmic -- at times almost stationary, but also capable of accelerating suddenly, like a sports car? What if collapse does not arrive over a number of centuries but comes suddenly, like a thief in the night?

As we saw in the last chapter, Western civilization in its first incarnation – the Roman Empire – did not decline and fall sedately. It collapsed within a generation, tipped over the edge of chaos by barbarian invaders in the early fifth century. Comparably swift collapses have been a leitmotif of this book. In 1530 the Incas were the masters of all they surveyed from their lofty Andean cities. Within less than a decade, foreign invaders with horses, gunpowder and lethal diseases had smashed their empire to smithereens. The Ming dynasty’s rule in China also fell apart with extraordinary speed in the mid-seventeenth century. Again, the transition from equipoise to anarchy took little more than a decade. In much the same way, the Bourbon monarchy in France passed from triumph to terror with astonishing rapidity. French intervention on the side of the colonial rebels against British rule in North America in the 1770s seemed like a good idea at the time, but it served to push French finances into a critical state. The summoning of the Estates General in May 1789 unleashed a political chain reaction and a collapse of royal legitimacy so swift that within four years the King had been decapitated by guilotine, a device invented only in 1791. At the time of the Young Turk movement, which came to power in 1908, the Ottoman Empire still seemed capable of being reformed. By 1922, when the last Sultan of the Ottoman Empire departed Istanbul aboard a British warship, it was gone. Japan’s empire reached its maximum territorial extent in 1942, after Pearl Harbor. By 1945 it too was no more.

The sun set on the British Empire with comparable suddenness.