Including “incidental” is pretty generous too. 14% had “more than incidental” which is the data I was using.
As for the Nambikwara—very cool, and very interesting. Very proscribed, though. I don’t think a single counterexample provides a very convincing contradiction of the overall claim, that heterosexuality is the default. In each of these cultures, homosexuality occurs under very specific rules and the men still have “traditional” marriages with women.
37% includes “incidental” and is definitely a maximum as far as I’ve seen. I think it’s probably safe to say statistically under half. A reanalysis of the same data put that down to 30%. More modern data has that rate much lower. https://kinseyinstitute.org/research/publications/historical-report-diversity-of-sexual-orientation.php
Including “incidental” is pretty generous too. 14% had “more than incidental” which is the data I was using.
As for the Nambikwara—very cool, and very interesting. Very proscribed, though. I don’t think a single counterexample provides a very convincing contradiction of the overall claim, that heterosexuality is the default. In each of these cultures, homosexuality occurs under very specific rules and the men still have “traditional” marriages with women.