But there are things that folks would be less used to, even if they do live in a big city. As I’ve described in previous posts, they’re everywhere and go in every direction. Any surface on which they can make progress toward their endpoint is useable. They sneak up on you, though. Most are electric and barely make a sound. They whir along at ungodly speeds in the tightest of spaces making hardly any noise. Heads must always be on a swivel.