He attributes the failure of some cultures to explore to lack of curiosity or anti-intellectualism. But exploration of that scale in that era was incredibly dan

He attributes the failure of some cultures to explore to lack of curiosity or anti-intellectualism. But exploration of that scale in that era was incredibly dangerous. A sufficient explanation is that individual explorers didn't want to be killed by barbarians, drowned at sea, or eaten by cannibals. Continuing to send manned missions to the moon after 1976 didn't seem that useful. Personally, I think I got more out of Star Wars than yet another moon landing.