Agreed, but our understanding of the chronology of human achievement is limited by what has survived through the ages. Prehistoric does not mean rudimentary: Göbelki Tepi predates Stonehenge by 5000 years. More time passed between the time that site was active and flourishing and the construction of Stonehenge than between Stonehenge and now, and we have no idea who built (the much more complex) gobelki tepi or how or why.
https://en.m.wikipedia.org/wiki/G%C3%B6bekli_Tepe
Agreed, but our understanding of the chronology of human achievement is limited by what has survived through the ages. Prehistoric does not mean rudimentary: Göbelki Tepi predates Stonehenge by 5000 years. More time passed between the time that site was active and flourishing and the construction of Stonehenge than between Stonehenge and now, and we have no idea who built (the much more complex) gobelki tepi or how or why.