Notes on the Evolution of Systems of Rules of Conduct: The Interplay between Rules of Individual Conduct and the Social Order of Actions

This file is a single theoretical essay in eight sections. Hayek’s scope is conceptual and methodological: he moves from animal societies to markets, psychology, jurisprudence, and scientific method to explain how rule-governed conduct produces orders no one has designed.

The purpose of these notes is to clarify the conceptual tools with which we describe facts, not to present new facts.

The thesis is the separation of two levels: rules followed by individuals and the order generated by their interaction. A rule need not be consciously known; it may be innate, learned, genetic, or cultural. Hayek’s target is the assumption that visible social order must be either deliberate organization or explicit agreement.

That the systems of rules of individual conduct and the order of actions which results from the individuals acting in accordance with them are not the same thing should be obvious as soon as it is stated, although the two are in fact frequently confused.

Sections I-II draw the implications. The same order may arise from different rules, and the same rules may fail under changed circumstances. Rules restrain impulses rather than mechanically cause action, while evolutionary selection tests not isolated rules but the viability of the whole pattern they help form. Sections III-IV then use geese, buffaloes, insects, kinship, marriage, property, and succession to show patterned coordination without any actor grasping the entire pattern.

The whole task of social theory consists in little else but an effort to reconstruct the overall orders which are thus formed, and the reason why that special apparatus of conceptual construction is needed which social theory represents is the complexity of this task.

Economics is Hayek’s chief example of such reconstruction: market theory explains an order generated by regularities of action, though economists often leave obscure which rules are tacit, enforced, alterable, or evolved. Linguistics is a parallel case. This makes the essay a foundation for Hayek’s mature theory of spontaneous order: social science must not confuse designed organization with self-maintaining order.

Sections V-VI contrast monocentric and polycentric order. A brain may model actions for an organism, but society is not a super-brain; its coordinating relations are among the same actors who act. Hayek’s anti-centralist point is informational, not merely political.

Such a non-hierarchic order dispenses with the necessity of first communicating all the information on which its several elements act to a common centre and conceivably may make the use of more information possible than could be transmitted to, and digested by, a centre.

The methodological claim follows: complex orders may obey general principles while owing their existence to unique evolutionary sequences. Social theory therefore resembles biology, geology, or cosmology more than mechanics. Its mode is “conjectural history,” a model of a possible process rather than a chronicle of particulars.

Conjectural history in this sense is the reconstruction of a hypothetical kind of process which may never have been observed but which, if it had taken place, would have produced phenomena of the kind we observe.

Section VII permits functional or “teleological” explanation without design: rules may be explained by the survival-conducive orders they sustain, though that order is no one’s intention. Section VIII turns to culturally transmitted norms, enforced through imitation, rank, acceptance, and exclusion. Normativity arises before explicit command, from the need to remain within predictable paths in a partly unknown world.

Norms are thus an adaptation to a factual regularity on which we depend but which we know only partially and on which we can count only if we observe those norms.

The closing analysis of taboo and conscience gives the essay its anthropological force. People do not normally calculate all consequences; they fear disorientation when they leave established procedures. Hayek’s relevance lies in this integrated account of spontaneous order: tacit rules, environmental fit, social learning, and evolutionary selection generate orders more complex than deliberate design can command.