Joined: Jan. 2007
One more time Joe:
It depends what you mean by "patriarchal family tree", typically we use shorthand to represent the nested hierarchical structure that descent from a common ancestor leads to, and we simply write "X" at each node of a tree. This is for many reasons, one of which is simplicity of notation. That the relationship of "descended from" forms a nested hierarchical structure is not, I believe, in dispute, so what you appear to be arguing over is notation. Do we agree that we can sort the descendents of a person into a nested hierarchy, and that with slight change of notation this structure is identical to the colloquial "family tree"?