Mark Zuckerberg was leading a meeting in the Aquarium, one of Facebook's conference rooms, so named because it's in the middle of a huge work space and has glass walls on three sides so everybody can see in. Conference rooms are a big deal at Facebook because they're the only places anybody has any privacy at all, even the bare minimum of privacy the Aquarium gets you. Otherwise the space is open plan: no cubicles, no offices, no walls, just a rolling tundra of office furniture. Sheryl Sandberg, Facebook's COO, who used to be Lawrence Summers' chief of staff at the Treasury Department, doesn't have an office. Zuckerberg, Facebook's CEO and co-founder and presiding visionary, doesn't have an office.
The team was going over the launch of Facebook's revamped Messages service, which had happened the day before and gone off without a hitch or rather without more than the usual number of hitches. Zuckerberg kept the meeting on track, pushing briskly through his points — no notes or whiteboard, just talking with his hands — but the tone was relaxed. Much has been made of Zuckerberg's legendarily awkward social manner, but in a room like this, he's the Silicon Valley equivalent of George Plimpton. He bantered with Andrew "Boz" Bosworth, a director of engineering who ran the project. (Boz was Zuckerberg's instructor in a course on artificial intelligence when they were at Harvard. He says his future boss didn't do very well. Though, in fairness, Zuckerberg did invent Facebook that semester.) Apart from a journalist sitting in the corner, no one in the room looked over 30, and apart from the journalist's public relations escort, it was boys only.