In order to grasp the idea, a useful analogy is that of the different time scale between animals and plants. To us, plants look almost still because we live in a faster dimension, but whenever we watch footage of plants that has been sped up significantly, suddenly we can see them moving like animals in the way they crawl, test the space around them, bend towards the light, spread their roots to reach out for nutrients, etc.
In such cases, the movements of plants have been sped up to match the time scale of animals, therefore we see the similarity. The same way, when we speed up or slow down recorded sounds of various nature, we appreciate an inherent self-similarity of the phonosphere in which we are constantly immersed and by which we are shaped into being.
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