"The mainstream scientific belief has always been that evolution was an unidirectional mechanism – that is, once organisms develop new evolutionary traits, they don’t get to go back to their previous state. This idea has been so pervasive in the scientific community that it has even made into law – the Dollo’s law: "that evolution is not reversible; i.e., structures or functions discarded during the course of evolution do not reappear in a given line of organisms.” The hypothesis was first advanced by a historian, Edgar Quinet. "
info@als-alexander.org or interalex1@yahoo.com