She pondered this for a moment, then nodded slowly, "It's like that a lot of places back home as well. Japan especially, and some of the American Indian tribes, where I come from."

She shrugged as she tied a knot in the end of each braid, flicking them back behind her shoulders once more, "Personally I've never seen the point of cutting out options like that. Strictly genetically speaking it thins the blood, leads to weaker and weaker generations that have a harder and harder time finding a partner who isn't related to them." She shook her head, "Just stupid."