This is pretty cool. At the risk of repeating myself, my view is that there is no *one* theory that accounts for all the pyramid construction methods. I see no reason why Houdin’s internal ramp theory cannot be working alongside a counterweight method, alongside a concrete method.
Can’t wait until some internet “researcher” finds the recipe for concrete in tablets given to humans by extraterrestrials! Those poor, stupid Egyptians. Can’t do anything without their alien nannies.