lilhurk1985187 posted...
Incest is incest. This applies to everybody regardless of how much time goes by.
So we all have 2 biological parents and if there's no incest 4 grandparents and 8 great grandparents and so on. Going back 30 generations is 2^30 = 1,073,741,824. So if you and your mate both aren't committing incest and don't have incest in your past then 30 generations ago not only do you both need 1 trillion distinct relatives but those 2 lists can't have any overlap... and there aren't that many people... not now, not then... probably not in the history of humanity have we reached a sum of 2 trillion people yet.
You just can't count it as incest going back 30 generations unless all relationships are incest.