David Sacks, on the other hand, was unmarried and unencumbered, and in 1999 he left politics, his law degree and a job at the consulting firm McKinsey & Company to join his Stanford Review friends at a technology start-up, because of “the desire to live on the edge, to fight an epic battle, to experience in a very diluted way what previous generations must have felt as they prepared to go to war,” he wrote at the time. For his generation, he wrote, “instead of violence, unbridled capitalism has become the preferred vehicle for channeling their energy, intellect and aggression.”