The optimism in America stood in stark contrast to gloom elsewhere, as it does today. Japan’s economy had slipped into deflation in 1997. Germany was “the sick man of Europe”, its firms held back by rigid labour markets and other high costs. Emerging markets, having soared ahead, were in crisis: between 1997 and 1999 countries from Thailand to Brazil saw their currencies crash as foreign capital fled and dollar-denominated debts proved unpayable.