The Matsigenka hunt for monkeys and parrots, grow yucca and bananas, and build houses that they roof with the leaves of a particular kind of palm tree, known as a kapashi.

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In nature, a moth that is camouflaged to look like a certain kind of tree knows that it must land on that tree in order to evade detection by predators.

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Ms. SYLVESTER: I really wasn't a fan of the gum tree because it was kind of a nuisance everyday, there'd be crowds of people in front of it taking photos, sticking their gum on there, and sanitary-wise, it really was not fun to look at everyday as I'm peering outside this door.

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Snobs on its face would seem to be a facile story about a striving, dopey girl who marries for status in a somewhat backwards British society where status of the family tree kind still matters a great deal.

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"This kind of culture needs a family tree, " explains B6.

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