Tor classifies areas in San Francisco by bicycle. I’d say that’s about right.
Also available in print.
If it seems like every day you log in to Facebook, it’s someone’s birthday, you’re probably not that far off.
When Americans had sex, moved in with someone, and so on. Often not average. Far from normal.
For every family get-together I go to, it seems there are more kids running around. I know that they are related to me somehow, but what do I call them? Maybe this chart will help next time.