I wait on platform 7 of Berlin Haustbahnoft, the central train station in Berlin. Mathias, for whom I am waiting, has already left, from Berlin Ostbahnoft, to the conference we were planning on going to.

Deciding, after an hour, that he won't come, and forgetting the name of the town that the conference was in, I go home and read Harry Potter.

Apparently, Ostbahnoft was called Haustbahnoft before the wall came down, and to this day, this still causes endless confusion.