Doc was the last surviving member of the young Turk faction that had named, then rubbished, "the TOT lot." They were called the GID, or Get It Done, school. Their leader had been Leuk Markov, who himself had been over a hundred years old when he had become Doc’s teacher. Obviously from his name (which was taken from the surname of Eve Dinah’s boyfriend Markus), Leuk had been a Dinan, but Doc and most of his followers were Ivyns, which gave them an air of seriousness and credibility that had proved useful in pressing their agenda. They had formed a partnership with mostly Moiran philosophers who had begun questioning the TOT lot’s premises, pointing out that re-creating simulacra of Old Earth biomes, in addition to taking an unreasonably long time, reflected a basically sentimental way of thinking about nature. It was an expression of a sort of post-traumatic stress disorder that the human races had carried on their backs ever since the Hard Rain. It was time to discard that. The old ecosystems would never return. Even if it were possible to bring them back, it would take so long as to not be worth it. In any event—and this was the nail in the coffin, supplied personally by Doc—it would fail anyway because the forces of natural selection were unpredictable and uncontrollable.