What can last forever, waiting: geometry, the edge of the universe, making shapes out of shapes. Wave forms written over eternity.
What do you think of the idea that some of the objects you see in the night sky ceased to exist long ago? Their light is still streaming out like a ghost.
You just defined ‘fractals’.
At the time I was visiting a radio telescope facility. Something about the shape of, and shapes in, the telescopes struck me.