The economic calculation problem (ECP) is a criticism of using central economic planning (rather than market-based mechanisms) for the allocation of the factors of production. It was first proposed by Ludwig von Mises in his 1920 article "Economic Calculation in the Socialist Commonwealth" and later expanded upon by Friedrich Hayek.
In his first article, Mises described the nature of the price system under capitalism and described how individual subjective values (while criticizing other theories of value) are translated into the objective information necessary for rational allocation of resources in society. He argued that central planning necessarily leads to an irrational and inefficient allocation of resources. In market exchanges, prices reflect the supply and demand of resources, labor and products. In the article, Mises focused his criticism on the deficiencies of the socialisation of capital goods, but he later went on to elaborate on various different forms of socialism in his book Socialism. He briefly mentioned the problem in the 3rd book of Human Action: a Treatise on Economics, where he also elaborated on the different types of socialism, namely the "Hindenburg" and "Lenin" models, which he viewed as fundamentally flawed despite their ideological differences.