Last month, I interviewed Sam Altman and Mira Murati of OpenAI. Now she is taking over his job. Who knew? Certainly not them. 

The ouster of OpenAI’s Altman, one of tech’s most visible chief executives, shocked the business and tech world on Friday. It also put the company’s chief technology officer, Murati, in charge of tech’s biggest and most daunting job: leading the AI pioneer without disrupting life as we know it.