Cologne has the shape that it does today because of the abilities and non-abilities of a Lancaster Bomber. It comes from what a Lancaster can do and what a Lancaster can’t do. What it cannot do is fly deep into Germany in the middle of the day and pinpoint-bomb a ball bearing factory. What it can do is fly to places that are quite near to England, that are five miles across, on a bend in the river, under moonlight, and then hit them with large amounts of H.E.. And if you do that, you end up with a city that looks like Cologne—the way the city’s shaped.