The Random Walker then Heads Towards the Hills

Here is a sign that you know you're tired: You are looking at a description of a random-walk model, and it looks like the text says "the walker then heads towards the hills". (It actually says "tills" rather than hills, as we're modeling shopper trajectories.)

But this gave me a wonderful mental picture of an exhausted random walker leaving a network in disgust and heading off towards the hills. My picture also has a sunset in it.