It can be limit process though, like a sigmoid, that eventually becomes stationary. That is a big assumption though. Evolution was punctuated by such seeming st

It can be limit process though, like a sigmoid, that eventually becomes stationary. That is a big assumption though. Evolution was punctuated by such seeming stable domains only to reset everything once conditions changed... Or push past previously known barriers. This including technical progress early in human history. The population function over long time is not exactly smooth either.