Ok, gents - now I have plenty counter-arguments to work with! I’ll try to answer just two points that several of you have raised with a very schematic historical scenario (or fairy-tale, if you prefer not believe it):
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How can a monetary system be created without the prior existence of a system of exchange?
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How can the creation of a taxation system precede the creation of a system of exchange, or even a monetary system?
Once upon a time, somewhere in the near-east, there were two tribes - A and B.
Tribe A lived in the valley, close to the river. They were a pretty sedentary bunch, although they raised a few cattle and sheep they lived mostly from agriculture.
Tribe B lived up on the mountain. They were a more active and mobile bunch, raising mostly cattle and sheep, tilling the occasional plot of land.
Occasionally Tribe A would trade the odd sheep for some grain from Tribe B, but this never amounted to much - mostly they just argued about who got to use the side of the valley. Tribe B claimed it was part of the mountain and wanted to graze it, Tribe B that it was part of the valley and wanted to plough it. One day this conflict escalated and B ended up getting the upper-hand, and that’s how the story begins.
Having conquered Tribe A the first thing that B does is to start taking things from A that are useful. This would usually start with food and would probably be by direct personal extortion under the threat of violence. But pretty soon two things start to happen:1. B will stop producing the things it can just take from A, which means that B becomes dependent on A for these. 2. Direct personal extortion is a pretty unstable way to obtain these things, so B will enforce some kind of formal tribute system to try and stabilize this relationship.
A tribute system usually involves a specified delivery at specified time. B can’t consume all of this stuff at once, so it will start to demand tribute in some kind of storable form - typically grain.
This tribute system is now a system of domination that B needs to perpetuate - in the long run, to do this it’s going to need to monopolize the use of weapons. So B starts to also demand the raw materials to manufacture weapons from A, and metals (to start with copper and tin, but this might easily be extended to gold once our system gets going, as described below) get added to the tribute list.
So now every member of A has to deliver so much wheat and so much metal to B, say once a year. But the problem with metal - as against wheat - is that the amount easily available in any given area is pretty much fixed and finite, so soon the members of A start to have difficulty laying their hands on the required metal to pay the tribute. The only source of the metal demanded by B is B itself (is this starting to sound horribly familiar), so A has to exchange a yet further amount of wheat with B, in return for the metal required to meet B’s demands.
Notice that at this point the system is entirely self-sustaining - the exchange is motivated purely by the tribute system, and B is guaranteed to get back the metal it gave A. In principle B could dispense entirely with the wheat tribute and simply demand the metal. B can exchange the metal for wheat (or potentially anything else B needs) any time it needs it. I concede that historically this would happen gradually.
Note also the possibility of loaning the metal at the time the tribute is required for even more wheat at a later date. One of the peculiarities of near-eastern monetary history is the emergence of interest payments prior to an obvious commercial need for the loan of capital.
Note also that a weapon-making metal like copper (which incidentally was the earliest known metallic currency in the near-east) might easily be substituted for something with similar properties of scarcity and durability. Ideally yet scarcer and more durable - like gold.
So we now have a rudimentary gold-based monetary and taxation system, without anything more than the incidental exchange a few sheep!
Just a fairy story? If you read a few books on early near-eastern history you might be surprised how familiar they seem!
M.