What has actually been achieved on this video call? It takes Jared Spataro just a few clicks to find out. Microsoft’s head of productivity software pulls up a sidebar in Teams, a video-conferencing service. There is a 30-second pause while somewhere in one of the firm’s vast data centres an artificial-intelligence (AI) model analyses a recording of the virtual meeting so far. Then an impressively accurate summary of your correspondent’s questions and Mr Jared’s answers appears. Mr Jared can barely contain his enthusiasm. “This is not your daddy’s AI," he beams.