Mark Zuckerberg recently shared his hiring philosophy, stating that he would only hire someone he'd be comfortable working for in an alternate universe. Reflecting on his early days at Facebook, he admitted, “When I started the company, I thought I should hire people who had a lot of professional experience. It just didn't click.” He also recalled advice from an investor who told him, “You should probably hire people” who challenge him. The full context is available in the linked tweet.