{"id":27532,"date":"2026-04-21T04:00:00","date_gmt":"2026-04-21T02:00:00","guid":{"rendered":"https:\/\/www.thebrokernews.ch\/?p=27532"},"modified":"2026-04-19T13:55:10","modified_gmt":"2026-04-19T11:55:10","slug":"when-models-fail-the-death-of-economics","status":"publish","type":"post","link":"https:\/\/www.thebrokernews.ch\/en\/when-models-fail-the-death-of-economics\/","title":{"rendered":"When Models Fail: The Quiet Death of Economics"},"content":{"rendered":"
When models fail because a system no longer resembles the theory.<\/span><\/div>\n\n\n\n

What if not only money and energy lose their stability, but also the theories we use to explain the economy? The article traces why classic economic models are reaching their limits in a world of debt, fiat money, energy shortages and permanent intervention and why economics itself is increasingly losing its grip.
<\/strong>
Last week, I argued that money is quietly losing something essential, not its function as a medium of exchange, nor its liquidity, but its reliability as a stable store of value. Before that, we examined how energy, the physical foundation of all economic activity, has grown less stable, less predictable, and more expensive.<\/p>\n\n\n\n

Taken together, these shifts point to a deeper, more uncomfortable conclusion: it is not only the economy that is being repriced. It is the very framework we use to understand it.<\/p>\n\n\n\n

For more than two centuries, economics has presented itself as the science of equilibrium. The labels have changed, classical, Keynesian, monetarist, neoclassical but the underlying architecture remains reassuringly familiar: supply meets demand, prices adjust, markets clear. Shocks arrive, but the system, given time and the right policies, returns to balance.<\/p>\n\n\n\n

The canonical names still command authority: Adam Smith\u2019s invisible hand, John Maynard Keynes\u2019s demand management, Milton Friedman\u2019s monetary rules. Different eras, different prescriptions. The same core belief: the system is intelligible, manageable, and ultimately self-correcting.<\/p>\n\n\n\n

That belief is now under severe strain.<\/p>\n\n\n\n

Not because these thinkers were fundamentally wrong in their time, but because the world they described no longer exists.<\/p>\n\n\n\n

A System That No Longer Resembles the Theory<\/strong><\/h6>\n\n\n\n

Classical economics assumed real scarcity, fiscal discipline, and hard external constraints. Money could not expand indefinitely without consequences. States could not borrow endlessly without risk. Energy remained abundant enough to fade into the background as a mere input.<\/p>\n\n\n\n

Those conditions have dissolved. Money is now created inside the system, by the system, primarily to stabilize the system. Central bank balance sheets, which once hovered near 6% of GDP in the pre-2008 era for major economies like the US, expanded dramatically and remain elevated around 21\u201322% of US GDP as of early 2026, even after partial normalization. Debt has shifted from a temporary bridge to the permanent operating condition. And energy has re-emerged as a binding, often volatile constraint rather than a reliable constant.<\/p>\n\n\n\n

The models did not fail through internal error. The world moved beyond their assumptions. Adam Smith never modelled central banks holding assets equivalent to 20%+ of GDP. Keynes did not envision permanent structural deficits routinely financed by monetary expansion. Friedman did not anticipate a financial architecture where meaningful contraction of the money supply risks systemic fracture.<\/p>\n\n\n\n

Yet we persist in interpreting today\u2019s realities through yesterday\u2019s lenses.<\/p>\n\n\n\n

A Small Island, a Few Apples, and Three Economists<\/strong><\/h6>\n\n\n\n

There is a simpler way to test whether our theories still map to reality.<\/p>\n\n\n\n

Imagine a quiet Greek island: a butcher, a farmer, a baker, a caf\u00e9 owner. Everyone owes everyone a little, the usual web of small obligations that keeps commerce flowing.<\/p>\n\n\n\n

One day, a tourist places a \u20ac100 note on the hotel counter. The hotelier pays the butcher, who pays the farmer, who pays his supplier, who pays the caf\u00e9 owner, who settles his tab at the hotel. The \u20ac100 completes its circuit and returns to the starting point.<\/p>\n\n\n\n

No new goods were produced. No extra pigs, apples, or bread appeared. Yet all debts feel lighter. The system breathes easier.<\/p>\n\n\n\n

Adam Smith might praise the elegant circulation that restored balance. Keynes would emphasize the initial injection that unlocked dormant activity. Friedman would note that nothing real had changed, only the velocity of money.<\/p>\n\n\n\n

All three, in this simple case, are right. Now alter the experiment.<\/p>\n\n\n\n

Instead of one tourist\u2019s \u20ac100, the central bank distributes \u20ac1,000 to every resident. The number of pigs, apples, and rooms stays the same. Only the quantity of money increases. Prices adjust upward, more currency chasing the same goods.<\/p>\n\n\n\n

Then a storm strikes. Fewer pigs. Fewer apples. Less bread. More money. Fewer goods.<\/p>\n\n\n\n

We still hear assurances that prices will eventually \u201creturn to target.\u201d<\/p>\n\n\n\n

At this point, sophisticated models give way to basic arithmetic. A child might ask the obvious: if there are more coins and fewer apples, why would apples become cheaper?<\/p>\n\n\n\n

Explanations then proliferate expectations, transitory effects, forward guidance, credibility. The language grows ornate. But the apples have not multiplied. Complexity stops being insight and becomes evasion.<\/p>\n\n\n\n

This is no longer a thought experiment confined to a quiet Greek island. It is the exact reality confronting central banks in the fiat era. They have flooded the system with trillions in new money while the physical and structural constraints on the real economy have tightened, energy costs, debt burdens, supply limits, demographics. More currency is chasing goods whose production has become harder and more expensive. Yet the response is the same as on the island: increasingly sophisticated explanations, revised forecasts, appeals to confidence, and ever more ornate language. The simple arithmetic refuses to cooperate, so the models are stretched, twisted, and ultimately abandoned in practice.<\/p>\n\n\n\n

From Policy to Improvisation<\/strong><\/h6>\n\n\n\n

Modern economics still speaks the confident language of control: raise rates to tame inflation; lower them to spur growth; expand the monetary base to boost demand.<\/p>\n\n\n\n

These relationships once held with reasonable predictability. Today they behave differently. Central banks have raised rates, yet inflation has proven sticky in many economies. Balance sheets shrink in rhetoric, only to stabilize or expand again when liquidity pressures emerge. Officials invoke discipline while ensuring the flow of credit never truly falters.<\/p>\n\n\n\n

This is no longer precision engineering. It is improvisation under constraint. The system has grown too indebted for genuine tightening and too fragile for real scarcity. Policy therefore oscillates tightening in language, accommodation in practice. Economics ceases to be a science of equilibrium and becomes the art of managing contradictions.<\/p>\n\n\n\n

The Arithmetic We Prefer Not to See<\/strong><\/h6>\n\n\n\n

Consider a comparison rarely made without qualification. In the corporate world, excessive debt triggers swift restructuring, creditors demand discipline, no ideology required.<\/p>\n\n\n\n

Nations operate differently; we are told. A country is not a company. True. Yet the distinction often obscures a harder reality. GDP measures activity, not free cash flow. Countries do not typically generate surpluses to repay debt; they run persistent deficits and refinance.<\/p>\n\n\n\n

Recent data illustrates the scale (as of late 2025\/early 2026 estimates):<\/p>\n\n\n\n

\u00b7 United States: 121\u2013125% debt-to-GDP, with structural deficits projected to remain elevated.<\/p>\n\n\n\n

\u00b7 France: 114\u2013118% debt-to-GDP, with ongoing structural imbalances.<\/p>\n\n\n\n

\u00b7 Italy: 135\u2013138% debt-to-GDP, carrying persistent fragility.<\/p>\n\n\n\n

\u00b7 Japan: 235\u2013250%+ debt-to-GDP, sustained by deep monetary dependency.<\/p>\n\n\n\n

\u00b7 Germany: 63\u201365%, acting as the relative anchor but constrained within the euro framework.<\/p>\n\n\n\n

When debt cannot be outgrown and austerity proves politically or economically intolerable, it is reduced through time via inflation that quietly erodes real value. Not the violent hyperinflation of textbooks, but persistent, grinding erosion: a de facto tax on holding money.<\/p>\n\n\n\n

Energy: The Constraint Economics Ignored<\/strong><\/h6>\n\n\n\n

Simultaneously, the physical world has reasserted itself.<\/p>\n\n\n\n

Global primary energy consumption remains dominated by fossil fuels, which still account for roughly 80%+ of the mix in recent data. Approximate shares (2024\/2025 figures):<\/p>\n\n\n\n

\u00b7 Oil: 30\u201332% – the backbone of transport and chemicals.<\/p>\n\n\n\n

\u00b7 Coal: 26\u201327% – still dominant in power and industry, especially in Asia.<\/p>\n\n\n\n

\u00b7 Natural Gas: 24% – key for industry, heating, and power.<\/p>\n\n\n\n

\u00b7 Renewables (including hydro and modern bioenergy): rising but 12\u201315% of primary energy (with stronger gains in electricity generation).<\/p>\n\n\n\n

\u00b7 Nuclear: 4\u20135% – stable baseload where deployed.<\/p>\n\n\n\n

Energy is not merely another variable in a production function. It is the thermodynamic prerequisite for all activity. When its cost or availability tightens, whether through geopolitics, depletion dynamics, or transition frictions, no amount of monetary or fiscal stimulus can conjure physical output.<\/p>\n\n\n\n

Money cannot print physics.<\/p>\n\n\n\n

The Eurozone: Monetary Theory Completely Detached from Reality<\/strong><\/h6>\n\n\n\n

The eurozone offers the starkest example of modern monetary policy operating in open disconnection from underlying economic reality: one currency imposed over widely divergent economies and fiscal behaviours.<\/p>\n\n\n\n

\u00b7 Germany: 63 to 65% debt-to-GDP – the reluctant anchor, export-oriented and fiscally conservative.<\/p>\n\n\n\n

\u00b7 France: 114 to 118% – a weakening link with structural deficits.<\/p>\n\n\n\n

\u00b7 Italy: 135 to 138% – carrying systemic risk.<\/p>\n\n\n\n

\u00b7 Greece: 150%+ – contained but symptomatic.<\/p>\n\n\n\n

This is not a self-equilibrating system. It is a system that requires perpetual maintenance through accommodation, fiscal transfers, monetary support, or political forbearance.<\/p>\n\n\n\n

When theory collides with mismatched fundamentals, improvisation again fills the gap.<\/p>\n\n\n\n

Historical Precedents: Currency Unions That Failed<\/strong><\/h6>\n\n\n\n

History offers sobering precedents that should make us pause. We have seen this script before, in the very heart of Europe, and not just once.<\/p>\n\n\n\n

The Austro-Hungarian Empire: Collapse When Cohesion Broke<\/strong><\/h6>\n\n\n\n

The Austro-Hungarian Empire operated one of the most integrated currency unions of the modern era: a single Krone currency managed by the Austro-Hungarian Bank, spanning a vast, multi-ethnic territory with shared monetary policy, free capital flows, and a common payments system. For nearly fifty years after the 1867 Compromise, it delivered stability and growth; real incomes roughly doubled in many regions as trade and industrialization flourished under the shared monetary roof.<\/p>\n\n\n\n

But the union was built on political cohesion, not just economic theory. When that cohesion shattered in the fires of World War I and the empire\u2019s collapse in 1918, the monetary union did not gently unwind, it exploded. Successor states (Austria, Hungary, Czechoslovakia, Yugoslavia, Poland, Romania) inherited a hyper-devalued, war-inflated Krone. Desperate to assert sovereignty and control their own seigniorage, they raced to \u201cnationalize\u201d the currency: borders were sealed, old banknotes were stamped with national marks, and new currencies were issued under separate central banks.<\/p>\n\n\n\n

What followed was textbook monetary chaos. Without a single fiscal or political authority to enforce discipline, governments printed money to cover war debts, reconstruction costs, and deficits. The money supply in Austria surged dramatically in the postwar years (rising over 14,000% in key periods), driving prices up more than 11,800-fold by the early 1920s in Austria, with similar hyperinflations elsewhere. The competitive issuance of the old Krone by fragmented authorities turned the shared currency into a vehicle for inflation export. Banks that had operated across the old empire, most famously Vienna\u2019s Creditanstalt faced runs, illiquidity, and eventual collapse. The 1931 Creditanstalt crisis, triggered in part by these lingering imbalances, rippled across Europe and helped deepen the Great Depression.<\/p>\n\n\n\n

The Latin Monetary Union: Free-Riding and Fragility<\/strong><\/h6>\n\n\n\n

A parallel drama unfolded earlier, in the Latin Monetary Union (LMU) of 1865\u20131927, one of the clearest 19th-century forerunners to today\u2019s eurozone and a coinage-based experiment in shared monetary space without full political or fiscal integration. France, Belgium, Italy, and Switzerland (later joined by Greece) agreed to a union centered on the French franc, with mutual acceptance of gold and silver coins at a fixed bimetallic ratio of 15.5:1. Coins were to circulate freely across borders, promising lower transaction costs and easier trade much like the euro\u2019s architects envisioned decades later.<\/p>\n\n\n\n

Yet cracks appeared almost immediately, revealing the dangers of divergent incentives in a monetary union. Weaker or fiscally strained members engaged in free-riding and debasement. As early as 1866, the Papal States dramatically over-issued small silver coins with reduced precious metal content, equivalent in volume to Belgium\u2019s entire output that year, then exchanged the debased coins for full-weight gold and silver from stronger partners, pocketing the seigniorage profit. Italy suspended convertibility of banknotes early on and issued large volumes of inconvertible paper while pushing limits on silver coinage. Greece repeatedly reduced metal content in its coins, leading to suspensions and freezes.<\/p>\n\n\n\n

Gresham\u2019s Law<\/a> operated relentlessly: \u201cbad\u201d (debased) money drove out \u201cgood\u201d (full weight) money. The global collapse in silver prices from the 1870s triggered massive arbitrage, members minted cheap silver into coins at the fixed ratio and drained gold from the system. France, as the dominant anchor, repeatedly stepped in to enforce discipline: imposing limits on small-denomination coinage and paper money, demanding redemption of excess coins in gold, threatening penalties or expulsion, and rewriting the rules through successive conferences. Silver minting was restricted, then suspended, forcing a de facto shift to gold yet tensions and improvisations persisted. The union survived through ongoing bargaining and French-led pressure, but it lacked the institutional depth to prevent national interests from undermining the collective. World War I delivered the decisive blow: suspension of gold convertibility, national war financing through printing, and fragmentation. Though formally dissolved only in 1926\/1927, the LMU had effectively ceased functioning years earlier.<\/p>\n\n\n\n

The Fiat Revolution: A Permanent Floating Bubble Economy<\/strong><\/h6>\n\n\n\n

These historical episodes occurred under metallic or semi-metallic systems with at least some external constraints. Today\u2019s reality is more radical: the system has fully transitioned to fiat currency money created by decree, unanchored from any commodity, backed only by trust in governments and central banks.<\/p>\n\n\n\n

In this environment, we inhabit a constant floating bubble of expanding credit, asset prices, and debt. Central banks can (and do) create unlimited liquidity to paper over imbalances, sustain deficits, and prevent tightening from ever becoming too real. The bubble inflates as long as confidence holds and energy\/physical constraints remain manageable.<\/p>\n\n\n\n

But without hard anchors, the system drifts\u2014prices, valuations, and expectations detach further from underlying output until a shock (energy spike, loss of reserve currency faith, or geopolitical rupture) pricks it. Then the bubble does not gently deflate; it risks abrupt adjustment or explosion, as seen in the uncontrolled printing that followed the Austro-Hungarian breakup or the rule-bending free-riding that eroded the LMU from within.<\/p>\n\n\n\n

Why the Parallels Matter: Monetary Policy Untethered from Reality<\/strong><\/h6>\n\n\n\n

The parallels to today\u2019s eurozone are direct and uncomfortable: one currency, multiple sovereign fiscal policies and economic realities; a strong anchor (Germany now, France then) bearing disproportionate enforcement burdens while subsidizing weaker links through liquidity and political forbearance; persistent temptation for peripherals to rely on shared monetary space rather than internal reform; and iterative rule-bending or accommodation when discipline proves painful.<\/p>\n\n\n\n

In both cases, theory promised equilibrium through fixed parities and free flows. Reality delivered free-riding, arbitrage, pressure on the centre, and quiet erosion, until external shocks exposed the structural cracks.<\/p>\n\n\n\n

We all know where experiments like this have tended to end; not in neat textbook self-correction, but in asymmetric adjustment devaluations (or their modern fiat equivalents via inflation or controls), capital flight, banking strains, and eroded public trust.<\/p>\n\n\n\n

The eurozone has so far avoided outright breakup through extraordinary ECB intervention and political will. But history whispers that such accommodations cannot last forever without deeper structural convergence or painful rupture.<\/p>\n\n\n\n

The arithmetic and the physics do not bend to theory indefinitely.<\/p>\n\n\n\n

When Economics Becomes Theology<\/strong><\/h6>\n\n\n\n

At this juncture, the language of economics persists, equilibrium, policy paths, 2% targets, soft landings but its tether to observable reality frays.<\/p>\n\n\n\n

When a framework survives by reassuring rather than describing, it risks becoming something else: a theology of continuity. We repeat that inflation will reliably decline, that policy remains restrictive, that normality lies just ahead. Not always because the data demand it, but because belief is necessary to sustain confidence.<\/p>\n\n\n\n

Conclusion: The System Did Not Break, It Moved<\/strong><\/h6>\n\n\n\n

The system has not collapsed in spectacular fashion. It has quietly evolved into something different: one where money expands to service debt, energy imposes hard physical limits, and policy consists of navigating contradictions rather than resolving them.<\/p>\n\n\n\n

In the age of fiat, this evolution feels especially weightless, a perpetual floating bubble kept aloft by central-bank liquidity and collective faith. The old economists are not disproven in their historical context. They simply analysed a different world, one of harder constraints, less financialization, and more tangible scarcity.<\/p>\n\n\n\n

The danger lies not in reading them, but in continuing to treat their models as timeless gospel while the ground beneath them has shifted.<\/p>\n\n\n\n

When models fail quietly, the consequences rarely announce themselves first in academic journals. They surface in the reliability of money, the cost and availability of energy, and the slow passage of time.<\/p>\n\n\n\n

By the time theory catches up, reality has already moved on, and the bubble, however long it floats, eventually meets its limits.<\/p>\n\n\n\n

Eric Lefebvre<\/p>\n\n\n\n

Read also: When money revaluates the price of time<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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