In my view, once the peanuts start being used as money, they behave in a very debt-like manner.* Before money, barter is the exchange of wealth for wealth. Once money shows up, the same barter transaction is virtualized in time and space. One party gives wealth in exchange for a token that they expect to be able to redeem for wealth later. When they actually get around to redeeming it, the barter is completed.
One key to this system is the value of the money. In this hypothetical, peanuts-used-as-money are much more valuable than peanuts-used-as-food. This is a general result throughout history, by the way. If you don't see the peanut as a token representing a claim on wealth** you have to resort to silly handwaving to explain this premium in value. (Note that I said "explain", not "name".)
Absolutely not, and this is an essential point in understanding monetary value. There is no handwaving in the demand for store of value.
People find it hugely practical to use intermediate exchange: it allows you not only to split the barter trade into two steps (if I want eggs for apples, I do not have to find a single partner who is simultaneously interested in apples, and willing to offer eggs, but I can find a first partner interested in apples, and another partner interested in offering eggs) which reduces a N-square problem into an N-problem (N being the number of different kinds of commodities and services traded). But it allows for two additional aspects:
1) the trade can be separated in time *without having to resort to an explicit debt* (which is what you still call "a debt" I start to figure).
2) very important: I don't have to decide already right away what I will be wanting in the future. I can delay my choice for the second part of the trade to later.
These practical advantages of indirect trade make that people are having a DEMAND for storage of value, once the notion exists, and an asset allows one to do so (once money exists, in other ways). That demand didn't exist before, but like i-phones, there was no demand for i-phones as long as they didn't exist.
That extra demand for the commodity that became money makes that the price of the commodity rises. THAT is that premium value of money: the demand for storage of value.
There's no more handwaving in that than in the demand for i-phones once they exist.
The commodity working as an intermediate asset has a NEW USAGE, and that new usage goes with a new demand, and that demand engenders a price (especially against "sound money" where there is no or very small offer).
It is exactly what you find in the monetary formula:
P x Q = M x V when you re-write T as 1/V and B (the value of the monetary asset) as 1/P:
B = Q x T / M
The price of the monetary asset is determined by "the value one wants to store" (Q - the stuff one wants to buy) and "the time one wants to store that value" (T, the harmonic average holding time), divided by the amount of monetary assets that are in circulation.
In other words: the demand for storage of value is nothing else but Q x T: the amount of value one wants to store, and the time one wants to store it. That demand has to be satisfied with a finite amount of circulating monetary assets M.
I don't see what is so handwaving about that. It is crystal-clear.
Now, I can see what you will say: you will say that this is a "debt" Q over a time T. The point is: it is a GAMBLE. The *demand* for storage in a monetary asset is not related to what *really* be bought with it, but with what the demander THINKS he will be able to buy with it.
If it turns out that his money will not be accepted anymore next year, but he doesn't know this right away, and he still *speculates* onto the idea that people are going to be *willing* to accept his money, then he bases his DEMAND for money right now on that idea.
So that money now is going to be in demand, and will have a certain price right now, if those wanting the money speculate on being able to exchange it for goods in the future.
The demand is hence based upon the *desire to store value* and not on the actual value they will obtain when they will finally exchange it.
The important point is that the "price of money" is depending on this demand for store of value (in that particular monetary asset). That demand will vary according to the mood of people, and also according to the kind of monetary asset that is mostly "in" (that is, what people speculate that others will still want to accept, and at what price, later when they will want to get the value back).
As such, the value stored in a monetary asset is normally fluctuating. One day there may be a high demand for money, and money will be worth a lot ; the next day, there may be a much lower demand for that kind of money, and it may become almost worthless.
In a fiat system, this is mainly stabilized, essentially by imposing monetary monopoly (merchants are obliged to accept that type of money against their goods and services), and by introducing feedback mechanisms with the central bank, buffering the money offer against the money demand.
In a "sound money" system with open competition between monetary assets, one can expect much higher volatility in the value of money, especially if the competition is very open between different kinds of money.