To those of you who deny the possibility of a cyclic or nonlinear history, give me one good reason we don't build like this anymore. You want to know what I think? I think we can't. I think the knowledge and skill is long, long gone, if "we" ever had it to begin with. I think it has nothing to do with economics, despite all of our machinery, if we wanted to even replicate, much less match the marvels of the past. We would find we couldn't.

Prove me wrong.

https://www.youtube.com/watch?v=nqVs_dUgTKM