When China joined the World Trade Organization at the start of this century, its surging exports rattled US manufacturing. Prices fell, jobs became less lucrative, and communities that relied on these jobs were hit hard. President Donald Trump seems determined to bring those jobs back to the US. Is that realistic or even desirable? The FT’s chief economics commentator Martin Wolf speaks to MIT economics professor David Autor about the \"China shock\" and the (potentially more significant) AI challenge that lies ahead.