• Boomkop3@reddthat.com
      2·
      3 个月前

      Well, I suppose if you go backwards your family tree has circles. But nowadays incest isn’t particularly common is it?

      • Lifter@discuss.tchncs.de
        1·
        3 个月前

        Most cultures frown uppn it but cousin marriage is very common is some parts of the world. There is a great wikipedia article on Incest.

        But I was really talking about the former. The likelihood that not a single crossing has happened since the beginning of like is very small.