Knowledge Problems and Their Solutions: Some Relevant Distinctions

This file is a single-author theoretical chapter in Austrian economics and social philosophy. Its scope is conceptual rather than historical: Kirzner reexamines Hayek’s “knowledge problem” and asks whether Hayek’s account of market coordination can legitimately be extended to the evolution of law, language, money, measurement, and other institutions. The main thesis is that Hayek’s analogy between markets and spontaneous institutional evolution is only partly valid, because the market knowledge problem contains two different problems with different solutions.

In the present chapter I shall join Hayek's critics in questioning the asserted parallelism (between the achievements of free markets within a given institutional setting and the spontaneous evolution of institutions themselves) which has formed the foundation for Hayek's work in recent decades.

Kirzner’s first move is to divide dispersed-knowledge failure into two kinds. Knowledge Problem A concerns disappointed expectations: agents overestimate what others will do, make plans accordingly, and are corrected by failure. Knowledge Problem B concerns unperceived opportunities: agents are too pessimistic or unaware, so mutually beneficial exchanges never even come into view.

Both arise from the circumstance of dispersed information, but consist in distinctly different kinds of error.

This distinction lets Kirzner reinterpret market equilibrium. A market-clearing price solves not only the problem of avoiding frustrated plans, but also the deeper problem of ensuring that no mutually advantageous trades remain unnoticed. Yet these two achievements arise differently. A-type errors tend to be exposed by disappointment. B-type errors require entrepreneurial discovery.

Knowledge Problem B does not result in disappointed plans; it results in failure to achieve potential gains (because they remain unperceived).

The specifically Austrian element of the argument lies here: entrepreneurs are not merely allocators but discoverers of unnoticed gain. In markets, unrealized exchange opportunities generate private profit opportunities, and this makes social coordination self-propelling.

Whereas Knowledge Problem A was self-correcting, Knowledge Problem B created an incentive for its solution by discovery in the activity of profit-alert entrepreneurs.

The crucial turn of the chapter comes when Kirzner applies this distinction outside markets. Institutions such as language, law, money, and common measurement require mutually sustaining expectations, but they do not require that the best possible institution be chosen. Their existence depends mainly on solving Problem A: people must reliably expect others to follow the same rule.

Spontaneous order, in the sense of the spontaneous emergence of a set of rules, such as rules of language, behaviour or law, requires only that some given set of rules come to be universally expected.

This is why Hayek is partly right. Stable institutions can emerge without design, through the same expectation-adjusting processes visible in markets. But Kirzner denies that this proves a tendency toward institutionally superior outcomes. Replacing feet and inches with the metric system may be socially beneficial, yet the gain is not automatically converted into a private entrepreneurial profit opportunity.

There appears no obvious way in which any private entrepreneur could be attracted to notice the superiority of the metric system – let alone any chance of it being within his power to effect its adoption.

Kirzner then uses Menger’s theory of money to refine, rather than reject, spontaneous-order theory. Money can emerge spontaneously, but not because an entrepreneur captures the whole social gain from creating money. Its emergence resembles a snow path: each user lowers costs for later users, producing cumulative coordination without centralized design. This shows that spontaneous processes exist outside markets, but also that they need not work like market entrepreneurship.

The chapter’s relevance is thus methodological and political. It preserves Hayek’s insight that dispersed knowledge makes centralized design deeply limited, while resisting an overbroad inference that evolved institutions are therefore generally welfare-improving. Kirzner’s conclusion is not anti-Hayekian but corrective: the market’s discovery procedure cannot simply be transferred to cultural evolution.

Such benign tendencies may well be powerful and important in some or many instances; but the spontaneous co-ordination which occurs in markets provides us with no basis for any extension of the welfare theorems relating to markets to the broader field of the theory of institutional evolution.