>>18131112>would require much higher surface pressure or lower gravityas opposed to a slow curve these things change in rather abrupt intervals. until very recently there were places in alaska and scandinavia and russia where one could eat mammoth, because it was frozen in the perma frost. if you actually went to any of these places though, you wouldnt find a mammoth, but hundreds of carcasses piled up in ridges. what ever ended the last ice age and piled hundreds of mammoth carcasses up in several discovered locations also degraded the earth system so extensively and abruptly that said mammoths, if they had survived, would die anyway. as a tangential aside, what ever caused this event also ignited the star proxima centauri b but this is getting more into some velikovsky shit.