In the late 1970s I assisted in a two-part documentary for German TV on the Egyptian pyramids. In part one we sort of made a pretty convincing case for how it was impossible that human beings, four and a half thousand years ago, could have built such gigantic edifices with such incredible accuracy. One had to assume that the Egyptians had had alien assistance. Then, in part two, we explained exactly how each of the architectural feats was achieved, indeed by human beings, at the time. https://frederic-38110.medium.com/picking-a-fight-with-astrologers-54ccda0d9631