This is just further evidence to show that there’s some periodic reset of civilization. Perhaps sun forced(micro-novas triggered by the black hole at the center of our Milky Way flipping its magnetic field). The shedding of the sun’s outer convective layer throws a big disturbance to the earth’s tectonic plates causing plates to move(or poles to be perceived as moving if the tectonic plates were to be used as frame of reference). This is led by a period where earth doesn’t have a strong magnetic field(as it takes time to recover), and low solar output which sputters back up leading to an ice-age with intermittent blasts. This prolly forced humans to build large underground shelters(Gobekle Tepe, Cappadosia, etc) to live when there’s intense solar outbursts.

Our genome hasn’t evolved much since the last 150,000yrs meaning that all faculties have been the same for ancient man. What we’ve effectively achieved in 2000yrs must’ve been replicated a few times in history. Even if the silicon age never came, it is likely man had strong agriculture, pottery, understanding of nature, evolution of animals(wolves were effectively bred into dog companions 40,000yrs ago), etc that would’ve surely lead to vast amounts of knowledge being gathered. And with high CO2 concentrations, it is likely that agriculture produce and access to energy(coal, firewood, nutrition, etc) was abundant to support fairly complex civilization that could support occupational specializations.

There’s evidence across the world in anthropologic, natural history and other evidence left behind. However, the full interpretation lies behind a series of walls of resets where we can only guess, but not fully understand the context of how things were. Imagine a 10,000yrs from now, someone finds a portion of a fossilized city dump with no direct access or lineage from present day. There’s not much that can be gleaned of things there. And some of these events are so catastrophic that they move oceans/atmospheric currents at supersonic speeds and cover large swathes of land under miles of slurry.