The mental constructs of the evenly rotating economy and of specific factors of production are discussed. Distinguishing between interest and profits and a construct of slow change are revealed through the ERE as Rothbard considers the final state of rest.The ERE construct is simply a useful, unrealizable, mental tool.
Rothbard's approach to money prices is not as a barter exchange system. Instead, he made money prices the common denominator for all exchange ratios. You can now engage in economic calculation.
This middle chapter on production theory goes into detail on factor pricing and discounted marginal value product. The way Rothbard developed every aspect of production theory is unique. As the economy becomes more specialized and complex, the importance of this market process becomes greater.
Here Rothbard deals with the pure rate of interest, as determined by time preference. It's a ratio of prices between present and future goods. The interest rate is equal to the rate of price spread in the various stages of production. It pervades all time markets.
Direct exchange was limited. The pattern of indirect exchange led to the common medium of exchange: money. Maximization of psychic income always leads the seller of a good to seek the highest money price for it, and the buyer of a good to seek the lowest money price.
Leading Austrian Economists discuss Henry Hazlitt's classic book Economics in One Lesson. Interview 1 of 12.
Exchange is the foundation of the division of labor. Each party to an exchange must expect greater psychic benefit than what he is giving up. Thus, trades are not equal, they are win-win activities. Property and ownership are value-free and a pre-condition of a free market.
