The Misesian Socialist Calculation argument goes, approximately, thusly:
If a government monopolizes all of the means of production, it will have no way to rationally allocate resources. Monopolizing the means, means there is no longer a market for capital goods. Capital goods cannot be bought and sold for their subjective use values as perceived by entrepeneurs. The values which are assigned to capital goods as prices in an act of exchange are not random or arbitrary. They represent a capital goods’ worth in a certain chain of production, which ultimately produces consumer goods. They represent the worth of said good in said production-chain to all of the market’s entrepeneurs and thus, a pretty good guess. It follows then, that if the consumer demand for a certain product falls off a cliff, then the price of an imaginary capital good in that process, whose only use is in producing said consumer good, will also fall off the cliff. Completely socialist governments can assign prices to their capital goods for accounting purposes, but they will not be gaining any information about it’s subjective use value.
It seems to us then, that the problem of calculation in the socialist commonwealth is fundamentally tied to that connection between capital goods and consumer goods. We know that socialist countries, such as North Korea or CCCP, will be poor, even if the private sale of consumer goods is permitted, because the producers and employers of capital goods have no access to the information of said good’s worth in a parrallel “market universe”, where prices convey information. But what about National Defense? It is neither purchased with the money of economizing individuals, nor is it consumed. Its demand is not determined our archetypal consumer, choosing which needs to alleviate, but by some kind of national planning board.
Let’s pretend that a country’s defense industry is nationalized. Tanks, munitions, airplanes, large arms, defense systems and technology are produced by the government. The non-specific means which contribute to those processes remain private, but the use-specific ones are nationalized as well. The nation has a defense budget which is ammended every five years but remains fixed in between ammendments. The nation does not intend on going to war in the next 15 years and no one will declare war on them, meaning they won’t be using those weapons they have produced? Now can you say that this state of affairs will be problematic in regards to the calculation argument? From what source are all of these productive and final goods supposed to get their exchange value as they are not consumer goods? Is this a black hole of catallactics or am I utterly lost?