"We're missing a nut," says a bemused Matt Hershenson, former Danger founder and now Google's director of hardware for Android, pointing at a vacant spot on an exploded photo of the Nexus Q. Its parts are strewn out across a white background, perfectly arranged in a linear pattern that starkly contrasts with the spherical nature of the thing. "Wow, you're right," agrees Joe Britt, engineering director at Google and another former Danger founder. "It's like the illuminators, you know, the monks who used to draw up the codexes." Hershenson picks up the reference without missing a beat: "Everybody needs to make at least one mistake. Nothing can be perfect."