Nested Hierarchy for dummies, ie evolutionitwits:
A nested hierarchy is nothing more than a well defined(super) set which contains and consists
of other specified (sub)sets.
A good visual would be the Russian nested dolls
For example when discussing Living Organisms
we divide everything into Kingdoms. Humans are Homo sapien sapiens
being the Genus, with the species and subspecies- are in the Kingdom Anamalia
IOW the Kingdom Anamalia
consists of and contains every level below it. Anamalia
being the superset, with Chordata
a more refined subset and Primates
being a more refined set of Chordates so on down to the species level. Each level being a more refined level of the one above. Each level containing and consisting of the levels below it.
In the Army example we would be classifying the US Army
which is broken up into Field Armies, which contain and consist of Corps, which contain and consist of Divisions, which contain and consist of Brigades, which contain and consist of Battalions, which contain and consist of Companies, which contain and consist of Platoons, which contain and consist of Squads & Sections. Squads and sections contain and consist of soldiers. Each level, down to the soldier, has a well defined role and place in the scheme.
Here is the $64,000 question:
In a paternal family tree scheme does the top level, the father, consist of and contain the lower levels?
(If you answer "yes" you are a complete moron and if you answer "no" then you see why a paternal family tree is not a nested hierarchy. You are not a complete moron.)