There are scientists that argue Chamelions evolved with the ability of changing their colour for a variety of different reasons. I don’t know why they should imagine a trait would have only one particular evolutionary advantage. But mostly I wonder at the remarkable biological sophistication that Chameleons demonstrate. Apparently these distant counsin’s of ours have skin cells where the pigmentation and nanocrystals are pulled together or apart to reflect different light frequencies. A relaxed Chameleon is green and blue, but when it becomes excited it reflects red, orange and yellow. As Darwin recognised in his second masterpiece; The Expression of the Emotions in Man and [other] Animals, every Chameleon’s motivations will be as complex as our own even if we share many of their other physical expressions. We have inherited some quite distinct expressions of our own, the fact that we uncover our teeth in rage, that the hair on our necks stands up when we are in fear, and that we sometimes blush would all seem remarkable to a Chameleon. But none of these can really compete with this remarkable ability to change colour… If ever evidence is required to reject the idea that humanity represents a peak of evolutionary progress then surely here it is.