That's not very different from what I wrote except that I didn't mention language, since the topic was specialization. I assume that everybody in a given nomadic tribe spoke the same language, but even if there a few, I don't see that as a specialization issue unless it created a need for a subset to be translators. Also, you seem to be saying that even the shaman isn't a specialist. In my understanding, he's the medicine man and/or holy man, which is what I mean by a specialist - someone with a talent not possessed by all whose services are coveted by many.
That's also not a specialization issue to me. If anything, it represents a paucity of specialized talent. But it is an interesting phenomenon. How is it that so many great minds found one another to create the American government, but today, it seems like the worst rise to the top in politics, religion, and business. How is the current Republican party in power at all? Look at who rises to the top in religion - fraudsters. This is who people support and admire, but one, people like that were anomalous.
I wrote, "Astronomy and cosmology are falsifying examples. So is abiogenesis research" to your claim that, "any "science" without commercial, military, or political applications isn't even performed any longer."
That's an interesting claim. Didn't you want to develop that a little? Which aspects of cosmology do you propose is related to weaponry? If you mean nuclear weapons, I disagree that they are a child of cosmology. That's nuclear physics. Are you referring to determining the age and dimensions of the cosmos? Maybe you mean studying the cosmic microwave background or the distribution of filaments of galaxies and voids. I'm aware of no weaponry to come out of that science.
And what about the other counterexamples, astronomy and abiogenesis? Surely you don't believe that no work is done in those areas unless it serves one of those three (commercial, political, or political interests).
I don't know. That's never been an interest of mine. But that DOES refer to specialization following the arrival of civilization as does all architecture and much of construction.