On engagement, we're already seeing that mobile users are more likely to be daily active users than desktop users. They're more likely to use Facebook six or seven days of the week. ↗
The real story of Facebook is just that we've worked so hard for all this time. I mean, the real story is actually probably pretty boring, right? I mean, we just sat at our computers for six years and coded. ↗
There is also this benefit in brag, that the speaker is unconsciously expressing his own ideal. Humor him by all means, draw it all out, and hold him to it. ↗