Once, years back, when I was living in D.C., I walked out of a movie theater, and instead of heading home, I decided on a whim to go stop by a bookstore. It was a bookstore that I rarely ever went to, one sorta out of my way — and so I took a train I rarely ride on. When I got to my stop, I literally — physically — bumped into an old friend of my sister’s while getting off the train. This occasionally can happen, sure, but in this case, she did not live in D.C. at the time. Yet in that moment, she not only happened to be in town, but apparently in the same metro station, and entering the same train car I was exiting. At the exact same time. Weird.