Animals can be driven crazy by placing too many in too small a pen. Homo sapiens is the only animal that voluntarily does this to himself.

- "Lazarus Long" (Robert A. Heinlein)

That probably says it all as to the differences between urban and rural manners. (Not that there aren't crazy people in rural areas. Just that they don't get brought into such close contact with others that the craziness starts to be the norm.)

Peter