i think the people saying its a mystery just didnt want to admit it was slave labour
But it wasn't slave labour. It was constructed by highly skilled craftsman who seemingly enjoyed better living standards than their non-pyramid constructing equivalents.
They were paying their taxes to the state in labor, which is probably where the slavery misconception/interpretation comes from.
I assumed it was from the Moses story being one of the main cultural sources for ancient egypt
Nah, it's just good old fashioned legacy colonial racism.
https://www.sapiens.org/archaeology/pseudoarchaeology-racism/
https://www.discovermagazine.com/planet-earth/did-aliens-build-the-pyramids-and-other-racist-theories
Common misconception, the pyramids were built by workers who got paid in beer and food, after the fields were planted and they had nothing but idle time. They even had the first strike in recorded history
Khufu’s Pyramid at Giza was a massive undertaking, requiring approximately two million stone blocks weighing an average of 2.5 tons to be set into place, five every minute during the first years of construction [1]
mfs didn't even use wheels; they were just sliding those huge blocks up ramps! It is pretty amazing.
Was no one really smart enough to put wheels on the blocks? I guess it was probably an axle strength issue.
Axel strength, and I think I've heard they likely used loose sand as "lubricant". (Do not do this in other situations)