The lower graph is more in line with how societies operate. Skewing the distribution on some trait means the expectation when dealing with a stranger is skewed and for a society to function beyond the smallest of scales strangers have to interact. 1/2
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A few responses: 1) India is unique on Earth in that the whole country is structured around endogamous mating groups so there's varying levels of trust within those groups but almost none overall 2) India is a bit more populous than Iceland - Iceland is under the pop threshold.
End of conversation
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