As I’m surrounded by software engineers in a conference room with no natural light, playing augmented reality games on an iPhone, I forget for a second that I’m in Seattle visiting Facebook. Not Amazon or Microsoft. Facebook, a company that’s evolved from a simple social network to a full-on technology behemoth. Here, inside the largest engineering hub outside its Menlo Park headquarters, Facebook says people are working on many of the projects that will impact its 10-year roadmap and mission of “bringing the world closer together,” including Games, Groups, Messenger and, of course, ads. But I’m there to talk about one particular emerging technology that the company believes will be key to its future: augmented reality.