system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are we so amazed at what past civilizations created (pyramids, temples, etc) how did we lose the way these types of mega structures were created?

I can't figure out how word it better hopefully someone understands what I'm asking. Thank you !
gpt
We are amazed because building massive structures without sophisticated machines and tools seems amazing to us today. We haven't "lost" anything though. People kept right on building amazing structures right the way through history. The pyramids, the Acropolis, the Aqueducts, hundreds of amazing Cathedrals, etc.