[KakArvid]

Reminds me of a story I stumbled across a long time ago (at least as measured by internet time) about a guy in Michigan that figured out a method to build Stonehenge with a small crew and simple tools:

https://www.youtube.com/watch?v=lRRDzFROMx0

[fit2rule]

Yeah, sure, we could build Stonehenge today, but Stonehenge is not really representative of the monolithic cultural artefacts we couldn't easily build today, and Stonehenge, while popular in the Anglosphere, is not nearly as fascinating from the monolithic perspective as Baalbek and Sacsayhuamán and Gobekli Tepe ..

These all have things we need to look into, before we make big leaping conclusions about how primitive other cultures were and how things proceeded to the superlatives of modernity.

I'm prepared to learn that the rock cultures used hand tools and it was all just a lot of back breaking labor, but I also would not be surprised to learn that a laser-cutting device was discovered in a temple somewhere, and which 'explains everything' without any hand waving alien haircuts - albeit opening too many doors.