Maybe they undertook pyramids too fanatically altogether, and that that was their downfall. The thought-leaders thought pyramids were the best investment, inst

Maybe they undertook pyramids too fanatically altogether, and that that was their downfall. The thought-leaders thought pyramids were the best investment, instead of astronomy. The downfall may have been an effect of the great thing. Pyramids, sweet! There's a drought coming. I wouldn't go for the moon landing, not because it wasn't great, but it wasn't an all-consuming investment by civilization. There are a lot stronger modern candidates.