“Basically, there are two ways to build an organization,” a former Facebook employee explains. “You can be really, really good at hiring, or you can be really, really good at firing.” Zuckerberg has been really good at firing. “We made some hires that weren’t the right ones. And we were pretty good at correcting that quickly. Mark deserves the credit for identifying and following through with that.”
via Mark Zuckerberg’s Hidden Talent: Firing People - Business Insider