It is a principal of evolution: things are the same now as they have always been. Only very very slow changes can be considered. So when the ancient Egyptians recorded that the Earth had two suns before the one we have now, and one of them was green, everybody supposed that ancient Egyptians were too f**king stupid to breathe because we know very well that we have a yellow sun so therefore we have always had a yellow sun.
You should read the history of the theory of evolution. It has been quite a pageant to force people to pretend to accept it.
This post was edited by Not Sure at April 10, 2018 5:47 PM MDT