Ping pong or table tennis, whatever—this is about how to get off your phone. It's about how you face and laugh with a person ten feet away whom you may not know. They might vote differently than you.
We all know ping pong. It is in the club, the summer camp, the home garage, basement, the startup ad agency. It’s next to the couch where the coders sleep.
Now it goes public. In ancient Greece they called the public space the agora.
It's where you got a feel for what's going on.