" Wandering across a city — walking often quite alone, down dark alleys, through unfrequented districts and debouching suddenly onto main thoroughfares where for a spell one follows the main stream, is adopted by a group " he has come where we come from, wants to go where we want to go" . For a while it is true but the side streets are there. Pause in one of them for a moment, and the stream has moved on. So, as there is no catching up with the group, there is no more reason to return to the main street than to wander away from it... more alleys... more thoroughfares... Where shall we be sleeping tonight? And those odd encounters of eyes in lonely alleys... "