Just a shower thought. Seeing how these structures took decades to build in their times, and that too entirely with manual labour, I was wondering how long these architectural marvels would take to be built in this post modern era with the help of our technological advancements.
Imagine the world has dedicated its focus and the entirety of its resources on building just one Pyramid as quickly as possible out of the same materials and in the same location as the original ones. The medium of construction has no constraints but the end result must be indistinguishable, structure and composition wise.
I would love to hear how the process would take place in addition.
Yes, I just checked again (~ 21:25), they claim to place one stone every 20 s which is supposedly three times faster than the ancient egyptians did. However, they did not place one stone at a time, but several at different positions.
Estimated for 20 year construction time: 2.6 million stones/(20 y × 365 d/y × 12 h/d) = 30 stones/h
Some claim it possibly took only 10 to 15 years.