Ok, I get your distinction, but (and I'm a complete neophyte non-professional here, so bear with me), the layman's explanation for dark matter has been, "We don

Ok, I get your distinction, but (and I'm a complete neophyte non-professional here, so bear with me), the layman's explanation for dark matter has been, "We don't know what's causing it, but it acts like gravity, and the only thing we know of now that has gravity is matter, and it appears (hah) to be invisible to all of our known electro-magnetic radiation, so we call it "dark"". So I apologize if I've misunderstood, but based on that I don't think hypothosizing this unknown phenomenon as some sort of "dark matter" is entirely out of line. Thanks for your explanation.