Canadian Politics Today

Then there was that time many years later when I had some time to kill while transiting through Frankfurt and decided to do some sight seeing. That brought me to my first trip on the undergroundbahn. The train came into the station, came to a stop, and I positioned myself at one of the doors. I was alone at that particular door.  People got on and off at other doors, and then the train took off leaving me standing there since my door didn't open. Hm. Then a local, probably noticing my look of consternation, explained to me that individual doors on these trains don't open unless you wave your hand in front of a light thingy beside that door. So if no one is exiting or entering that particular door, it remains closed. Saves needless wear and tear I guess. I was then well prepared to negotiate the subsequent arrival and got on my way.