Take two stones of similar roughness and rub them together for many, many hours. Eventually you'll have to flat surfaces that fit almost perfectly together. Beyond that, it's not hard to see how some skilled craftsmen with some knowledge of geometry (and lots of laborers and a royal mandate) could construct what the Inca did.

What they built is incredibly impressive, but you don't need to invoke magic woo to explain it.

“ spiritual access to directed free-energy at the magnetic equator for dustifying/liquifying”

What? These words are English yet carry no meaning to me. Ancient people had clever engineers, just like us. Fuck all to do with magnetic spirituality whatever the fuck that is.

Every time there’s a thread about ancient engineering someone insists on this woo or different woo involving aliens.

Fucking tired of the arrogance and sheer dismissal of ancient people’s achievements.

Free energy at the magnetic equator. Fucks sake.