Thank you so much, forsnax5, for putting this into the record. It does not go, however, to the problem of whether Egyptian technology in 2600 BC would be capable of lifting and moving 20-ton blocks. For, pace general_re, some of the stones of which the Great Pyramid of Khofu (Cheops) have been estimated to weigh that much.
Thanks so much for writing.
Indeed, it doesn't. :)
However, it provides counterpoint to your argument from incredulity.
You mentioned common sense in an earlier post. Consider this: the Egyptians built over 60 pyramids. The order in which they were built is fairly well established. The first one was the small, "step pyramid" built around 2700 BC. The last one was built over 1000 years later.
Could the Egyptians of 2700 BC have built the great pyramid at Giza? Doubtful. But after practicing for 1000 years? I think that they had plenty of time to develop the necessary technology, even if it isn't obvious to us today...