Here is a really persuasive and unsettling book about the future, based not on science or sociology but on economics and demography. Charles Goodhart, an octogenarian British economist who has had a distinguished career in academia and at the Bank of England, and Manoj Pradhan, an American-educated academic who has founded his own macroeconomic research firm, have looked at how changing birth rates and increased longevity, coupled with globalisation, will affect the world economy. As they point out, surprisingly few economists have thought to connect the vast changes they describe.

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