And yet, did the Chinese continue with their early expertise in flood prevention? Just as with Chang Heng’s seismic mastery, Li Bing’s expertise counted for nothing; year upon year, thousands of Chinese die in immense inundations in the great rivers that course across the country; some 400 dams sustained damage in this week’s quake.

Historians have long debated why the Chinese so signally failed to exploit their early promise. Lack of internal competition, some suggest. Others blame the long-held central ambition of every young Chinese man to become a Confucian mandarin, a bureaucrat, rather than an engineer or scientist.

Not a few others, however — admirers of China and optimists in the main — say that in the long sweep of Chinese history, a mere 400 or 500 dark, non-scientific years are a mere blip, a hiccup, and that China’s innovative energies are now roaring back, with the universities and scientific institutions brimming as they did back in the golden ages of the great dynasties.

That had better be the case. China, in its headlong attempts to modernize, has often demonstrated a dismayingly cavalier attitude toward the well-being of its people: skyscrapers are built with little attention to safety standards and are invariably far from earthquake-resistant; huge dams — not least the monstrosity that has so ruined the Three Gorges of the Yangtze — are erected in a slapdash fashion; subways, like the system burrowing through the waterlogged alluvium beneath Shanghai, are built with incautious haste; freeway tunnels are bored through earthquake fault zones.

... contd.