The first rule of forecasting, the financial journalist Jane Bryant Quinn once , is this: give them a forecast or give them a date; just never give them both.

So, here¡¯s a not very bold forecast: Generative artificial-intelligence models like ChatGPT will revolutionize the economy. We just can¡¯t say when.

Nor can we say where. Among the lost amid the flurry of commentary on generative AI is which countries will benefit and which will not.