I suggest to read that David Graeber book. Hes an anthropologist. Smith got it wrong and mainstream economics just followed Smith. So Smith created the myth of how money came into being
When presented w anthropological evidence most economists accept Graeber version
http://www.nakedcapitalism.com/2011/09/david-graeber-on-the-invention-of-money-–-notes-on-sex-adventure-monomaniacal-sociopathy-and-the-true-function-of-economics.html
I read your link, but there is no relation about how gold became a medium of exchange that we talked about.
What anthropologists have in fact observed where money is not used is not a system of explicit lending and borrowing, but a very broad system of non-enumerated credits and debts. In most such societies, if a neighbor wants some possession of yours, it usually suffices simply to praise it (“what a magnificent pig!”); the response is to immediately hand it over, accompanied by much insistence that this is a gift and the donor certainly would never want anything in return. In fact, the recipient now owes him a favor.
A "gift economy" as he calls it, is nothing but the invention of debt. You can call it a "favor", it does not change the meaning.
But as long as the concept of debt exists, it surprise me that your article does not talk about how actors of such economy could keep track of their debt without the need of money.
Money was created as a solution to the problem of keeping track of debt without any convenient writing system.
The only way to keep track of favor, without money, is ink and paper, both which was not yet invented.
Adam Smith advocated that money what invented because of coincidence of need problem of barter economy.
It does not contradict the fact that a "gift economy" after barter could be existing for a while, but I find it highly dubious because without money and convenient writing you can't possibly keep track of debt (or favor as he calls).
It is more believable that a socialist economy (where all actors share what they hunt) was existing in a tribe, than such gift economy.
Also they do not explain why, people have started to exchange ornament as money instead of continuing such a "gift economy", if it was not to solve the accountability problem.