My understanding of what a nested hierarchy is is probably lacking. I like to think of the world's languages as nested hierarchies. God created different languages during the "Tower of Bable" incident (as you know) and they are distinct from each other. For example, German is distinct from Mandarin.
God created primates, which includes humans. Is this not a nested hierarchy?
You say "all life is a nested hierarchy", but apparently there are many creatures that don't fall into a nested hierarchy.
Edited by Dredge, : No reason given.