› On Sunday, Nvidia's board said it had full confidence in its chief executive, and in the same statement it opened an independent investigation into him.
› Three days later, according to The Wall Street Journal, the same board was preparing to remove him.
› This is not a piece about spies or about infidelity.
› It is about how a company worth trillions of dollars was built so that nobody knows who could take over when one man is no longer enough.