Consider how long it took for "science" to figure out there were techniques older than the Romans used in constructing those massive buildings like the Pyramids. Egyptologists are still clinging to the hypothesis that o nowhere. Why? Because Egyptologist are no engineers.

This goes for many archeologists etc too. You really have to look at these issues from multiple angles. I mean, if you can postulate slave labor of millions of people to erect buildings like the P's , why not postulate frequency as method to transport? Or some other exotic non-provable hypothesis.

At the same time, those who propose doable hypothesis based on observable factors, are being excluded from the conversation. I guess, humility is inversely related to "being part of an exclusive group" .