• 𞋴𝛂𝛋𝛆@lemmy.world
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    22 hours ago

    Not even a little bit. That is only present cultural norms and is entirely arbitrary. Incest is historically common and even considered preferential and a right in the past.

      • stiephelando@discuss.tchncs.de
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        21 hours ago

        That article doesn’t support your argument. The effect isn’t based on relation but on being raised together before the age of 6.

        • chicken@lemmy.dbzer0.com
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          20 hours ago

          Well yeah, but that is still “biologically ingrained to avoid incest”, since being raised separately and then reintroduced as adults is an edge case. The effect is biological even if what it’s directly testing for isn’t genetics.