The enduring mystery about William Henry Gates III is this: how did a precocious and sometimes obnoxious kid evolve into a billionaire tech lord and then into an elder statesman and philanthropist? This book gives us only the first part of the story, tracing Gates's evolution from birth in 1955 to the founding of Microsoft in 1975. For the next part of the story, we will just have to wait for the sequel. In a way, the volume's title describes it well. In the era before machine learning and AI, when computer programs were exclusively written by humans, the term "source code" meant something.

In celebration of New York Magazine's 50th anniversary, this series, which will continue through October 2018, tells the stories behind key moments that shaped the city's culture. In the summer of 1988, the hedge-fund manager Donald Sussman took a call from a former Columbia University computer-science professor wanting advice on his new Wall Street career. "I'd like to come see you," David Shaw, then 37 years old, told Sussman. Shaw had grown up in California, receiving a Ph.D. at Stanford University, then moved to New York to teach at Columbia before joining investment bank Morgan Stanley, which had a new secretive trading group that was using computer modeling. A neophyte in the ways of Wall Street, Shaw wanted Sussman, who founded the investment firm Paloma Partners, to look at an offer he had received from Morgan Stanley's rival, Goldman Sachs.

Computers and the internet are a part of all of our lives now -- and that means it can be hard to escape screens. If you're trying to limit both your and your kid's time online, maybe try some jokes about screens instead of staring at them. Here are some clean, kid-friendly computer jokes to share. They're so entertaining that your little computer addicts just might forget about all the internet fun they're missing out on. Where do computers go to dance?