Most species do their own evolving, making it up as they go along, which is the way Nature intended.
Terry PratchettReality is not digital, an on-off state, but analog. Something gradual. In other words, reality is a quality that things possess in the same way that they possess, say, weight. Some people are more real than others, for example. It has been estimated that there are only about five hundred real people on any given planet, which is why they keep unexpectedly running into one another all the time.
Terry PratchettHe was certain he was anorectic, because every time he looked in a mirror he saw a fat man. It was the Archchancellor, standing behind him and shouting at him.
Terry Pratchett