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[–] 1 point 2 years ago*

Does a line of contrast between 2 colors exist?

I'd say no. And even if it did, those colours are made out a material that consists of atoms that reflect light, both of which are "fuzzy" and 3D and can't make a proper line.

Does a movie projected at a wall exist?

Sure. There is photons bouncing of a wall and the information they carry we call "the movie". I guess that counts. But the relevant bit is the wall and again it's made out of atoms and therefore is not a proper flat 2D surface.

So yeah, I'd say not being 3D does mean something can't exist in the physical world.

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