I’m Low on Magnetite…or, Why I Didn’t Make It to the Dentist This Morning

See that map up there? It’s a map that Sheryl printed for me this morning with walking directions to my dentist appointment. Getting to my dentist used to be so easy even I could get there: take the train to Bryn Mawr, get off the train, and there was the dentist. Then they moved.
To say [...]