ill Gates is the John McEnroe of the tech world: once a snotty brat whom everyone loved to hate, now grown up into a beloved elder statesman. Former rivals, most notably Apples Steve Jobs, have since departed this dimension, while the Gates Foundation, focusing on unsexy but important technologies such as malaria nets, was doing “effective altruism” long before that became a fashionable term among philosophically minded tech bros. Time, then, to look back. In the first of what the author...