Keeping up--or not

This weekend, Philadelphia is changing the way it labels its commuter trains. (This does connect to writing, I promise. Stick with me.) For decades, the regional rail lines have been labeled "R" and paired with a number. For as long as I can remember, the airport train has been the R1, the Paoli train has been the R5, and so on. But now they're doing away with the numbering.

And being a writer, I couldn't help but be grateful that I haven't written a novel set in Philadelphia that's currently ...