The New Republic's Noam Sheiber:
Silicon Valley has become one of the most ageist places in America. Tech luminaries who otherwise pride themselves on their dedication to meritocracy don't think twice about deriding the not-actually-old. "Young people are just smarter," Facebook CEO Mark Zuckerberg told an audience at Stanford back in 2007. As I write, the website of ServiceNow, a large Santa Clara–based I.T. services company, features the following advisory in large letters atop its "careers" page: "We Want People Who Have Their Best Work Ahead of Them, Not Behind Them."