I guess for now I will have to go with the idea of a skilled work force. Seriously, the amount of labor goes down exponentially as the structure goes up and didn’t Jean Pierre Houdin reason the the first 1/3 or so have a standard ramp built as it was raised. That could have been a wide,no very wide, ramp being used with multiple tracks, some for fill some for face blocks and some for structural blocks. Just a thought.
The labor force putting the blocks in place would by necessity be smaller, but getting the blocks up to the right level would take longer and require more labor. It’s possible that the reason these things are pyramids in the first place is, to make something really tall required sturdy but heavy building materials, which in turn meant ramps, which in its turn meant a pyramidal shape. :’) While most of the mass was put in place in the first half of the height, that was still pretty high, OTOH there was more room to work. The lower part, though much larger, probably went into place much more quickly because there were more hands to do it.
http://www.freerepublic.com/focus/chat/3113134/posts?page=23#23