To him blood hardly shows up at all against the leaves, whether they are dry and brown or fresh and green. My way of seeing is clearly superior. Yet even I, with normal human color vision, don t see things the way they really are. I too am colorblind. We all are.
Some flower petals reflect ultraviolet light in startling patterns.
Bees can see ultraviolet. Human beings are blind to it, however, so what to a bee is a variegated flower may look to us plain yellow. They have an extra pair of eyes the pits that give them the name pit viper that perceive infrared rays from warm-blooded animals. The snakes visual system superimposes the images from their pits on those that come through their eyes, so that mice glow bright against a background of cool debris where to us they would be thoroughly camouflaged. Considering the way bees and snakes make their living, these ways of seeing are clearly superior.