If you don't regularly take public transit, you may not have the daily experience of bounded slices of time where you have nothing to do but sit and briefly wait. If you do, you'll notice that most people are looking at their phones.

If you don't regularly take public transit, you may not have the daily experience of bounded slices of time where you have nothing to do but sit and briefly wait. If you do, you'll notice that most people are looking at their phones.