leeneia> "level"

It's built in, sad to say:

* Hom Sap has difficulties with continuous change: remember what a journey of a thousand miles starts with.

* Hom Sap shows unidimensional thinking by default, cf "left" and "right" in politics [snip: the balance of that rant belongs elsewhere].

Add in the tendency to label abstract things to save having to think (I believe it's called "ontic dumping" in the linguistic trade), and ....