Every skill is different from every other qualitatively.

Skills are not related by any natural ranking from their intrinsic attributes.

Their distribution across society is not a natural consequence of their intrinsic attributes, but rather results from processes that are social, relating to accessibly and desirability for individuals receiving training.

Social processes are not natural, because they occur in society, not in nature.

I am sorry that you are feeling confused as you try to follow, but further simplification would be impossible.