Yes, that's why I said that there can be discussion about how the Egyptians did it with their technology. There is no question that e.g. the Romans could do it quite easily, and that that technology has not been lost again afterwards (look at the cathedrals and so on). And of course with current technology we can go far beyond what the Egyptians have done, but there's no real need for that when building something except in extreme circumstances (for scientific experiments or so).

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