Central bank and monetary policy

For monetary policymakers, a Ph.D. in economics-by itself-is not enough; in fact, a formal degree in economics is not even the decisive criterion. The issue is not the title but the mastery of the craft. The current Federal Reserve Chair, Jerome Powell, is not an academic economist in the traditional sense like several of his predecessors, yet his effectiveness rests on a deep command of financial markets, institutions, and the transmission mechanisms of policy.
To understand why technical competence is a prerequisite, one must look at the architecture of modern central banking. Every credible central bank operates within a disciplined two-stage framework. First, it must anchor its final objectives-price stability, financial stability, and sustainable growth. Second, it must navigate the mechanical transmission chain that links intermediate targets, such as credit conditions and liquidity, to operating instruments, such as the overnight interbank rate and balance-sheet tools. When these layers are confused, policy becomes performative rather than effective. The result is a form of "zombie policy"-measures that appear active in press releases but are mechanically disconnected from macroeconomic outcomes. It is at this point-where institutional design meets market judgment-that the question of technical courage becomes decisive.
Whether the regime is inflation-targeting or exchange-rate-anchored, it demands a very specific form of technical courage. When monetary policymakers lack the accumulated craft to distinguish between demand-side overheating and a supply-side shock, policy quickly degenerates into political theatre. The backbone of the entire process is the yield curve-the price map of time. A central bank can move short-term rates by decree, but the rates that matter for mortgages, investment, and corporate balance sheets are set at the long end. That long end is governed by the market's judgment of the policymaker's credibility and the government's fiscal discipline. Without a clear grasp of this structure, a central bank may tighten at the short end while the long end rebels, producing higher borrowing costs, balance-sheet stress, and potential instability in the banking system. So, monetary policy cannot be understood as a static administrative function; it is a continuous exercise in forward risk management.
Monetary policy is a forward-looking exercise in influence, designed not to record what has already happened but to shape what will happen-whether through timely policy activism or through a deliberate decision to wait when conditions demand restraint. A central bank leader is, in essence, the risk manager of an entire macroeconomic ecosystem, constantly assessing where pressures are building and how expectations are evolving. To lead such a system requires a clear understanding that monetary policy is the most difficult "public lever" to pull. It does not move the economy by administrative order; it works through the psychology of expectations, the plumbing of the interbank market, the volatility of asset prices, the credit channel, the exchange rate, and ultimately the yield curve that prices time itself.
Furthermore, monetary transmission is a distributed journey through conduits: the credit, expectations, exchange-rate, and balance-sheet channels. In developing economies, these "pipes" are often clogged by non-performing loans or low financial inclusion. The policy makers are without economic expertise is like a plumber who doesn't know where the pipes go. They may pull a lever-such as raising a rate-and find that nothing happens because the transmission is blocked. Monetary policy makers must master unconventional tools-sterilised foreign exchange interventions and macroprudential limits-to clear these blockages. Without a deep understanding of these failure modes, the use of instruments becomes purely mechanical, and the governor is left governing in the dark.
Beyond technicalities lies the reality of distributive consequences. Monetary policy is never neutral; it redistributes wealth. Every rate shift transfers income between borrowers and savers and between the formal and informal sectors. Tightening may stabilise inflation while crushing small borrowers; easing may support growth while widening wealth inequality through asset bubbles. When a governor improvises without a framework, these shifts become arbitrary and regressive.
Monetary policymakers are trained to manage what may be called "sympathetic resonance." In a macroeconomic system, once public confidence in the currency begins to oscillate in the wrong direction, expectations amplify the movement into a self-fulfilling spiral. Central banking, therefore, is the art of preventing that resonance from locking onto instability. Stagflation is the most severe test of that craft. When output is weak while prices continue to rise, tightening policy can deepen recession, yet loosening can accelerate currency depreciation and unanchor inflation expectations. In such a dilemma, the only viable anchor is technical credibility. Without it, the management of macroeconomic pathologies degenerates into a sequence of loud announcements, while the wage-price spiral proceeds beyond the reach of policy.
Macroeconomies are patient while errors accumulate, but they become unforgivingly brutal the moment confidence snaps. A central bank must read the economy's stress signals before they surface in financial markets and transmit anxiety to investors. If policymakers gamble with delays in taking appropriate action, the first casualty is the real wage of their own citizens. A nation may industrialise through the grit of its entrepreneurs, but it cannot stabilise its currency through improvisation. Leadership must act in time and send clear signals of price stability through credible policy activism; otherwise inflation becomes contagious, and the foundations of economic stability and political existence begin to crumble.
These dynamics are not theoretical. In Turkey, the prolonged refusal to tighten in the face of rising inflation convinced markets that price stability was no longer the anchor. The lira fell in waves, inflation surged, and nominal wage increases were overwhelmed by the collapse in real purchasing power. What had accumulated gradually turned, at the moment confidence snapped, into a full macroeconomic penalty. Argentina represents the chronic form of the same disease: repeated stabilisation announcements without credibility drove citizens out of their own currency, entrenched the wage-price spiral, and ensured that every adjustment fell first on real wages. Zimbabwe marks the extreme boundary, where the loss of monetary credibility destroyed money itself and reduced economic life to a sequence of hourly price revisions. In each case, industrial or entrepreneurial activity did not disappear overnight; what disappeared was the unit of account that makes modern economic coordination possible.
The counterexamples confirm the same law in reverse. In the United States (US) at the end of the 1970s, inflation had become embedded in expectations and real wages were stagnating until the Volcker Federal Reserve restored credibility through decisive and technically coherent tightening, breaking the wage-price spiral and re-anchoring the system. Brazil's Real Plan achieved a similar stabilization: chronic inflation that had silently eroded real incomes collapsed only when policy moved ahead of expectations and created a believable nominal anchor.
Macroeconomic systems can live with policy errors for years, storing pressure beneath the surface. When confidence finally gives way, the adjustment is immediate, regressive, and political. Stabilising a currency is therefore not an act of improvisation but an exercise in credibility, timing, and technically informed leadership.

Dr Abdullah A Dewan is professor emeritus of economics at Eastern Michigan University in the USA. His specialty is monetary and macroeconomics. Formerly, a Physicist and a nuclear engineer at BAEC.
Email: aadeone@gmail.com