In a capitalist society, the human perception that "the market" is an independent, sentient entity, is how buyers, sellers, and producers naturalise market exchange (the human choices and decisions that constitute commerce) as a series of "natural phenomena ... that ... happen of their own accord". Such were the political-economy arguments of the economists whom Karl Marx criticized when they spoke of the "natural equilibria" of markets, as if the price (value) of a commodity were independent of the volition and initiative of the capitalist producers, buyers, and sellers of commodities.