Much to the contrary, every kind of labor is qualitatively different from another, and bound to skill that is qualitatively different from other skill.
Several other contributors to the discussion have conflated various measures related to investment for acquiring a particular skill, with the skill itself.
Skill is not a quantity, nor may it be quantified, nor emerges a natural ranking for skill of various kinds.
I already addressed your conflation of occurrence within a population for a skill versus its intrinsic attributes, in response to your previous comment.
It was not implied that all labor is equal.
Much to the contrary, every kind of labor is qualitatively different from another, and bound to skill that is qualitatively different from other skill.
Several other contributors to the discussion have conflated various measures related to investment for acquiring a particular skill, with the skill itself.
Skill is not a quantity, nor may it be quantified, nor emerges a natural ranking for skill of various kinds.
Removed by mod
I already addressed your conflation of occurrence within a population for a skill versus its intrinsic attributes, in response to your previous comment.