#2 Broken window theory. Very few people will want to be the first person to spray the floor. Yet many don't care if they are the hundredth. Very very few people will be the first to smash a window, yet if one windows is left smashed for a time, every window will be smashed eventually. Then the whole neighborhood is nothing but smashed windows and urban decay. If the store paints the floor black every time someone sprays it, the number of people that will spray the floor will soon drop zero.
#2 Broken window theory. Very few people will want to be the first person to spray the floor. Yet many don't care if they are the hundredth. Very very few people will be the first to smash a window, yet if one windows is left smashed for a time, every window will be smashed eventually. Then the whole neighborhood is nothing but smashed windows and urban decay. If the store paints the floor black every time someone sprays it, the number of people that will spray the floor will soon drop zero.
Poland, Warsaw, Tuesday, nothing unusual happend.
WTF?
... and made an awesome city center out of it with any kind of mini-bars and shops and whatnot. :)