Bests & Worsts Reviews from Amazon

I can't figure out why someone would pretend to put a prism up for sale that's not a prism. This has no prism-like qualities at all. You can't teach ROYGBV (the colors of the spectrum) with something which produces no color at all. So, is it some kind of Amazon lottery where you might get a prism or you might not? Did you think people wouldn't check to see if this was a functioning prism? Or, just some kind of sick, "Look at how that rat in a cage reacts to this totally bogus product." Ha ha. "Did you see how disappointed his kid's looked?" Ha ha. "Maybe he'll just keep it so people won't see how stupid he was for buying it." Ha ha. Thanks for nuttin' Mark Evensen