I had a dream: I was listening to a documentary about sea shells. Somebody was saying that there was only a very limited number of different kinds of sea shells in the world, that explorers had for a long time roamed seas and oceans trying to discover new types of shells, but to no avail.
You could forgive them for thinking there would be a wide variety given the amount or weird stuff you find in the sea! But whenever they would discover a new layer of the ocean, a body of water previously unexplored, the same dozen or so of sea-shells would turn up, no more.
In my dream I remember thinking of the time I spent in sand pits as a child, finding tiny shells, wondering how they had made it all the way to my playground in a parisian subburb, and I thought: when children all over the world play in the sand, they find the same shells. It's all a repeating pattern. It never changes.
There you go. It doesn't mean much. I'm not even confident it was a dream - maybe a daydream brought on by some actual show I was listening to. It was brought back to me this morning as I was cleaning out my desk with the intent of working on it and I found these: