1.) not directly but the listing of their diet implies all of the food is locally sourced/eaten with only the processing available to a low technology society a

1.) not directly but the listing of their diet implies all of the food is locally sourced/eaten with only the processing available to a low technology society and no food stuff is traded/purchased with any other humans. The difficulty of the researchers on getting there implies no easy access to processed foods unless that, too, came on a canoe to the villagers or the villagers travelled via canoe to more advanced city and traded their hunter/gatherer food for modern food. The few photos indicates only a little bit of clothing made with sewing machines and not looking very new so more evidence for little contact with current tech villagers.