I don't think it had ever occurred to me that man's supremacy is not primarily due to his brain, as most of the books would have one think. It is due to the brain's capacity to make use of the information conveyed to it by a narrow band of visible light rays. His civilization, all that he had achieved or might achieve, hung upon his ability to perceive that range of vibrations from red to violet. Without that, he was lost.
One of the best gifts you can give to someone, is a wider perspective. It's also one of the best gifts you can receive. So if you have given someone a wider perspective, don't feel bad about it (about taking their blindfolds off and having to watch them cringe in the newfound sunlight); I know it's hard, but you're doing them a lasting favor. And a wider perspective can be difficult for you yourself to accept, in the beginning (during the time that you squint while the sunlight stings your own eyes), but later you'll find yourself coming back to it, even if you abandoned it as something worthless; you'll look for it, one day. Or it will grow on you. Perspective.