First, I want the terminology to reflect the way in which the strongest senses of "performativity" are subsets of a more general phenomenon: the incorporation of economics into the infrastructures of markets. … Second, the notion of "prophecy," whether self-fulfilling or self-negating, can suggest that we are dealing only with beliefs and world views. While beliefs about markets are clearly important, an aspect of economics that is incorporated only into beliefs "in the heads" of economic actors may have a precarious status. A form of incorporation that is in some senses deeper is incorporation into algorithms, procedures, routines, and material devices. An economic model that is incorporated into these can have effects even if those who use them are skeptical of the model's virtues, unaware of its details, or even ignorant of its very existence.

Donald MacKenzie, An Engine, Not a Camera, loc. 95