Male Descendants- the Violation

Enough with the hints. It’s apparent I will just have to cut to it.

It was first posited that a paternal family tree, which Zachriel posted as having a father, alone at the top level as the patriarch, is a nested hierarchy.

It was then shown that a patriarch does not consist of nor contain his male descendants. That wasn’t enough.

Now that has evolved to the top level being whoever you choose, as well as all of that person’s male descendants. Each subsequent level has some male descendant(s) occupying it. D(x):x={x, all male descendants of x}.

All along I have dropping hints.

blipey spewed that I was saying “fathers have fathers” so it isn’t a nested hierarchy. So close and yet so far

I kept hinting at the female side of the equation. That has fallen of deaf ears. Not my fault.

So here it is:

If all sons have mothers, and all mothers have fathers, how many hierarchies does Sam’s son- D(sam)->D(sam’s first son)- belong to?

HINT: He is the descendant of two potentially unrelated men- his father and his mother’s father.

Maybe your tree has your father and your mother’s father as the same guy. Otherwise you have a violation as the sets are no longer contained.

Can one soldier belong to two different squads or two different divisions at the same time?

Can a human belong to two phyla?