In my Physics Lab, in the corner, was a paving slab, attached flat to the wall by a metal bracket, so that it was perfectly horizontal. I had no idea why there was such an unusual shelf. There hadn’t been one in the labs I was taught in, so why here in the one I was teaching in.
My colleague explained that it provided a platform to place equipment on, like the barograph, so vibrations from the floor would not affect it.
So, the sticking out, mis-placed piece of street was a kind of haven in the room. Though that wouldn’t be your first impression – it wasn’t mine!
Baby in a feeding trough. Crucified state criminal. Empty tomb.
Who’d have thought that those are the fixed features in the world that everything else revolves around.