Interesting post. These guys need to next show several practical methods of collecting this brackish water.
(Nice to see research with no obvious political agenda, too.)
I also wonder about the family feud period on the island, when the population was split into small groups and lived in hidden caves they controlled -- was that related to water collection as well? And drinking water is some fraction of the total water needs, there's also agricultural water needs, even in societies supposedly not reliant on any irrigation (all ag societies use it to some degree).
” These guys need to next show several practical methods of collecting this brackish water.”
Easter Island. Must have been either pottery or maybe soak it up with some kind of fibrous sponge material?
Easter baskets wouldn’t work.