Is China like the US in 1890? Or is it more like Japan in 1980? If the parallel with America is right, China is likely to be the dominant power of the next century. If the Japanese comparison is more accurate, then the Chinese challenge to American hegemony could prove ephemeral.

The current mood in the US certainly feels like an exaggerated version of the “declinism” that set in towards the end of the 1980s, when the US was transfixed by the rise of Japan. A recent Pew opinion survey showed that a majority of Americans now believe that the Chinese economy is larger than that of the US. This is plain wrong. At the time the poll was taken, the Chinese economy was around half the size of America's.

It was this kind of scare that took hold in the late 1980s. Japanese investors provoked angst by buying the Rockefeller Centre in New York – and it was Japan that was the world's largest creditor nation.