Horowitz—who is the son of David Horowitz, the radical turned conservative polemicist—attributed Silicon Valley’s strain of libertarianism to the mentality of engineers. “Libertarianism is, theoretically, a relatively elegant solution,” he said. “People here have a great affinity for that kind of thing—they want elegance. Most people here are relatively apolitical and not that knowledgeable about how these large complicated systems of societies work. Libertarianism has got a lot of the false positives that Communism had, in that it’s a very simple solution that solves everything.” The intellectual model is not the dour Ayn Rand but Bay Area philosophers and gurus who imagine that limitless progress can be achieved through technology. Stewart Brand, now seventy-four, popularized the term “personal computer” and made “hacker” the tech equivalent of freedom fighter. His Whole Earth Catalog—a compendium of hippie products, generated by users, that is now considered an analog precursor of the Web—can still be found on desks at Facebook.