1. I feel like social and productivity are at two ends of a spectrum. Searc, at least in my mind, is closer to productivity. Still seems unlikely to me that the

1. I feel like social and productivity are at two ends of a spectrum. Searc, at least in my mind, is closer to productivity. Still seems unlikely to me that they'd build it from scratch rather than buy someone. 2. Interesting that you think of the stack that way. So you think Facebook will encroach onto Search at some point? What exactly is in the full stack? And an obligatory reference to Apple, is Apple a different full stack or are they a short stack without search? Now I want pancakes