Moving Pictures

I was riding on the subway this morning on the way to orientation, blankly staring into space while attempting not to fall over the man crushed against my side, when I was suddenly surprised by the view outside the window. Now normally we all know that the view outside of a subway window is either blackness or a blank wall, and this is what surprised me: instead of boring cement, a commercial was playing in the subway tunnel. I guess it was like those little flip books of Disney scenes that you could buy as a kid, but these were painted on the wall of the subway tunnel and were brought to life by the movement of the train as it passed the pictures. What exactly it was advertising I couldn`t tell, but I was impressed nonetheless.