Interaction is the fundamental building bock. All of existence, all matter, and all changes are driven by those Fundamental Interactions...gravity, electromagnetic, strong nuclear, and weak nuclear. In a way, neither life nor death exists, only interaction exists. There are simple interactions and there are complex interactions. It is those most complex of all interactions we call life and consciousness.
No matter how small you divide things up, you would still find that for those things to exist they must still interact in some way. There is always interaction. Interaction is fundamental.
How does animism fit into this? Everything is animated by those forces of nature. Everything in existence is moving, changing, dynamic, energetic. That to me IS animate. That animating "spirit" of everything that exists (rocks, trees, breathing creatures, the Sun, the Moon, our galaxy, the entire universe) is those Fundamental Forces. That is the "spirit" of all existence. Our most primitive, animistic ancestors were not wrong in thinking the way they did about nature. In fact, being as close to nature as they were they probably understood how it worked better than anyone...almost as well as modern physicists.
In a way, modern physics is the animism of the future.
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