The initial reaction in the US tech industry to the news that Jensen Huang, the head of Nvidia, was having an affair with a suspected Chinese spy seemed to be a great big shrug emoji. Elon Musk said it would be “an honour” to hire him. Bill Ackman, a billionaire hedge fund manager, stressed that “even incredible humans make mistakes,” posting on X: “Onward.” Donald Trump praised Huang as an “honourable guy” who has “done such an incredible job.”