The idea brewing is still about walls. I am just not done with that yet. What's coming is "......sat on a wall". It is much too soon for statements, but there are a few things that make a difference: the height of the wall, the object on the wall, and is the object placed there like the tea cup (and from which side, i.e. which way does the cup face?), or is it happenstance like a bird. It is early days.