In 1971, when the last formal link between the dollar and gold was severed, more than a monetary system collapsed. Something more subtle, and more consequential, was quietly abandoned: the very idea of a limit—not a technical constraint subject to adjustment—but an ontological boundary separating what can be deliberately produced from what can only emerge through human action over time. Once that boundary disappeared, money ceased to resist and became, for the first time, fully administrable.
What had once functioned as a spontaneous institution, shaped by dispersed decisions and gradual adaptation, was recast as a policy variable.
A Misleading Opposition
The episode is often framed as a contrast between John Maynard Keynes, who legitimized monetary intervention as a tool of stabilization, and Milton Friedman, portrayed as the defender of discipline against discretion. Yet this contrast, while convenient, obscures more than it reveals. Friedman does not reject the central premise underlying Keynesian thought; he refines it.
Where Keynes relies on discretionary judgment, Friedman proposes rules. Where one endorses active management, the other seeks predictable management. Both, however, accept a presupposition that often goes unexamined: that money may legitimately be placed under the control of a central authority. The disagreement is methodological, not foundational.
The Elegance of Rules
Friedman’s proposal carries undeniable elegance. By advocating a constant growth rule for the money supply, he attempts to remove arbitrariness from monetary policy, transforming intervention into predictability and power into regularity. What was once a matter of decision becomes, in appearance, a quasi-automatic process.
Yet this solution rests on a far-reaching assumption: that the monetary phenomenon can be sufficiently understood to be governed by a simple rule, consistently applied over time, as if money were an isolated variable within a system whose complexity can be captured by a model. Furthermore, rules must be made by people and people can also change them. This is not merely a technical claim, it is an epistemological one.
The Problem of Knowledge
At this point, the critique developed by Ludwig von Mises in Human Action and by Friedrich Hayek in the “The Use of Knowledge in Society” reveals its full force.
The economy is not a system to be calibrated, but an order of interdependent human actions structured by expectations, interpretations, and irreducibly dispersed knowledge. Money, within this order, is not a neutral instrument but a coordinating element, one that does not merely circulate but conveys information, aligns plans, and reflects judgments that do not exist in aggregated form prior to their expression. To govern money by rule is therefore to perform a conceptual reduction: to treat a complex social phenomenon as a technical parameter.
What is at stake is not whether one rule performs better than another, but whether any rule can capture the type of knowledge that money embodies. That knowledge is not purely quantitative; it is contextual, tacit, fragmented, and time-bound, emerging through processes no central authority, regardless of sophistication, can fully anticipate. What cannot be fully articulated cannot be fully administered.
The Organization of Ignorance
Friedman recognizes the dangers of discretionary policy and seeks to replace it with a mechanism that constrains arbitrariness. Yet, in doing so, he preserves the institutional framework that makes such intervention possible. His solution does not eliminate ignorance; it organizes it.
The belief that rules can substitute for judgment reflects a residual confidence that limits of knowledge can be neutralized by procedural design. But rules do not operate in a vacuum. They are conceived, implemented, and revised by institutions subject to the very constraints they are meant to overcome. There is no neutrality when the criteria of neutrality are defined by those who hold authority.
Power as Method
From this perspective, the evolution of modern monetary policy acquires a different meaning. Inflation targeting, central bank independence, and increasingly-sophisticated models do not signal the disappearance of intervention, but its internalization within a technical language that renders it less visible and therefore less contestable. Power no longer presents itself as decision, it presents itself as method. And what presents itself as method is rarely perceived as choice.
The most enduring forms of control are not those that impose themselves openly, but those that become indistinguishable from necessity.
An Elegant Concession
Here lies the ambiguity of Friedman’s legacy. By rejecting discretion and advocating rules, he raises the standard of monetary debate. Yet, by accepting centralized monetary authority, he contributes—perhaps unintentionally—to its consolidation under a more refined and resilient form. His framework does not challenge the existence of power, it disciplines it. But allegedly disciplined power is still power.
The Question that Remains
In the end, the issue is not whether money can be well managed, nor whether rules are preferable to discretion. These distinctions remain internal to a framework that already assumes what ought to be questioned: the legitimacy of managing money at all.
The deeper question precedes them: Can monetary order be constructed, or can it only emerge? If the answer is the latter, then no rule, however elegant, can replace the kind of limit that once existed, and whose disappearance marked not only a monetary transformation, but a shift in what we believe can be known, and therefore controlled.
