Who is Bill Gates from The Accidental Billionaires: The Founding of Facebook: A Tale of Sex, Money, Genius and Betrayal and what is their importance?

When Bill Gates gave a lecture at Harvard's computer science school, Mark Zuckerberg was in attendance. As a member of the audience, Mark was intrigued by two things he learned during the lecture. First, Bill Gates had dropped out of college to develop his business; and second, the future was in AI and that the next "Bill Gates" might be sitting in the room.