On Twitter this weekend I noted a little bit of geographical trivia: Rome — and by “Rome” I mean the famous city in Italy — is farther north than Chicago. Yes, you heard me right: Rome is at 41.9000° N; Chicago is at 41.8500° N. This tweet of mine generated some very interesting responses about how our geographical and temporal imaginations diverge from the realities:

All of us carry around in our minds timelines and maps by which we orient ourselves to history and place — and almost all of these mental constructs are wildly inaccurate. A somewhat sobering thought.