Trump’s U-turn on chip-export controls could be a boon
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China has top-flight models. But export controls left it struggling to run them
Officials want to lead the world in the new technology but are still wary of disruption
How worried should OpenAI and other labs be?
America has better technology. But will China adopt it more quickly?
They are pushing tools to the edge, scaling up and relying on fuzzy maths
Its concerns include jobs, security and beating America
