I totally agree with you Jim. Human civilization couldn't have happened with out specialization of labor. There's always going to be somebody who does some task a little better because they like it. By the same token, somebody else may hate doing that because they find it boring. I think this may have been the case all the way back to the cave. It's human nature.
Some people will learn to knap flint better than the next 20 people, but they may hate dealing with leather and making shoes and such. I'd imagine a couple guys sitting around the cave by the fire, getting ready for the big mastidon hunt the next day. There's Gronk, knapping away, and he makes the best spear points anyones ever seen. Nobody comes close to a Gronk made spear point. But over there, is old Blonk, and he's making a bad job of it. After he's cut himself for the third time, he looks over at Gronk, chipping away like a pro. But Blonk has an ace up his hide kilt. He makes the best moosehide boots around. Loves the leather work.
"Hey Gronk. You make me a spear point and I'll give ya a brand new pair of moosehide boots to wear on the hunt tomarow."
Gronk thinks this over for a few seconds. He'd been worrying over the fact that his boots had a hole in one sole and the other wasn't to good either.
"Deal!" he says. Bth men spit in palm and slap hands in the seal.
Next day Blonk's happy as a pig at the slops because he's carrying a new spear made by the best maker around and will go clean through a mastadon hide, and Gronk's happy because his feet are warm and comfortable in new moosehide boots stuffed with nice dried grass fr insulation.
Both men got what they wanted with a simple deal.
Human nature hasn't changed in 100,000 years, and it never will. The very fact that our civilization advanced is due to our ability to adapt, and deal and work at specilization of labor.