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Description: This is a pure abstract, with a 3D model made of mathematical expressions. It has something hidden in it. What could be that thing? Is it alive? So now, if you are using a normal screen (not mobile), zoom a little on the image, at the center of the thing, then focus on it long enough, especially look directly at this black center of the forefront model, and now try to look all around the spheres (while still focusing on the black center): you may see this thing becoming animated, or alive: it is a pure optical effect. Even when looking hard at it, you may see the spheres rotating, or morphing colors all around the center. Tricky, no? It also works when the image is zoomed out.