Wrong Every Time, Hired Every Time: How Bad Advice Became a Durable Career

In the winter of 1348, as the Black Death was working its way through Europe with catastrophic efficiency, the medical faculty of the University of Paris issued an official explanation for the pandemic. Their conclusion, after careful deliberation: the plague had been caused by a conjunction of Saturn, Jupiter, and Mars in the fortieth degree of Aquarius, which had produced a corruption of the surrounding air. The recommended responses included avoiding cold, moist foods, refraining from baths, and burning aromatic woods.

The plague killed roughly a third of Europe's population anyway.

The Paris medical faculty remained the most prestigious medical institution on the continent. Its members continued to advise kings and nobles. Their fees did not decrease. Their social standing did not collapse. They were wrong in ways that contributed to mass death, and it cost them essentially nothing professionally.

This should bother you more than it probably does, because the mechanisms behind it are still fully operational.

The Accountability Gap Is Structural, Not Accidental

Before we get into the history, it's worth establishing that what we're describing isn't a bug in how expert authority works. It's closer to a feature — or at least an inevitable consequence of how credentialed expertise functions as a social institution.

When you hire an expert, you're not just buying their prediction or their advice. You're buying a transfer of responsibility. If the Paris faculty's recommendation fails, the failure belongs to the miasma, or to God's inscrutable will, or to the patient's constitution. It does not belong to the faculty. This dynamic is ancient and it is durable, and understanding it explains a remarkable amount about why certain professional classes seem immune to the normal consequences of being wrong.

Medieval court astrologers are a particularly instructive case study. These were not charlatans operating in back alleys. They were educated, often brilliant men who had mastered a sophisticated technical system with its own internal logic, its own literature, its own standards of practice. They advised on the timing of military campaigns, royal marriages, and diplomatic negotiations. When their predictions failed — which, operating on a system with no actual predictive validity, they did with regularity — the explanation was almost never "astrology doesn't work." It was "the calculation was difficult" or "the king didn't follow the advice correctly" or "divine intervention superseded the celestial indications."

The unfalsifiability of the framework protected the practitioner. Sound familiar? It should.

The Physician Who Couldn't Lose

Medieval and early modern medicine provides the richest case studies, partly because the gap between what physicians believed and what was actually happening inside human bodies was so enormous that almost any intervention had a roughly equal chance of helping and harming.

Galenic medicine — the dominant framework for roughly fifteen centuries — operated on the theory that health depended on balancing four bodily humors: blood, phlegm, yellow bile, and black bile. Bloodletting, purging, and dietary restrictions were the primary tools for restoring balance. The theory was coherent, internally consistent, and almost entirely wrong about human physiology.

Physicians trained in this system weren't stupid. Many of them were observant clinicians who noticed that specific interventions seemed to help or harm specific presentations. But the theoretical framework they'd been trained in provided an explanation for every outcome, including failure. If a patient died after bloodletting, the disease had simply been too advanced, or the wrong quantity had been removed, or the patient's constitution was unusually weak. The therapy wasn't implicated. The physician wasn't implicated.

Moreover, the ritual of medicine — the examination, the diagnosis, the prescription — provided genuine social value independent of its medical value. A wealthy patient who received a thorough examination and a detailed treatment plan from a university-trained physician felt cared for, felt that their suffering was being taken seriously, felt that expert authority was being brought to bear on their problem. That experience was worth paying for even when the treatment itself was useless or harmful. Patients kept hiring physicians not because the medicine worked but because the relationship worked.

The Modern Translation

Now think about the last major economic forecast that turned out to be spectacularly wrong. Think about the management consulting engagement that produced a report nobody implemented. Think about the political strategist whose candidate lost badly, who was on television the following week explaining what other people should do differently.

The mechanisms are identical.

Economic forecasters operate within theoretical frameworks that provide explanations for failure that don't implicate the framework itself. The model was right; the data was revised. The analysis was correct; exogenous shocks intervened. The forecast would have been accurate if policy had been implemented as recommended. Unfalsifiability is doing the same work it did for the court astrologer.

Management consultants sell the ritual as much as the advice. A company that hires McKinsey and implements their recommendations has done something legible to its board and its investors — it has demonstrated that it took the problem seriously, brought in credentialed expertise, followed a rigorous process. The outcome of that process is almost secondary to the signaling value of the process itself. When the recommendations don't work, the company rarely returns to McKinsey and says "you were wrong." More often, they return to McKinsey for the next engagement, because the relationship and the ritual continue to provide value even when the specific advice doesn't.

Why This Isn't Going to Change

Here's the uncomfortable conclusion the historical record points toward: expert authority that persists through failure isn't a temporary glitch waiting to be corrected by better information or more accountability mechanisms. It's a stable equilibrium that serves the needs of multiple parties simultaneously.

Clients need to feel that they've done due diligence. Institutions need credentialed validators for decisions they've already made. Experts need frameworks that protect them from the consequences of being wrong. All three needs are met by a system where advice is expensive, accountability is diffuse, and failure is always attributable to something other than the advisor.

The Paris medical faculty wasn't keeping its position through fraud or corruption. It was meeting a genuine social need for authoritative explanation in a terrifying situation — and it was doing so within a professional structure that made accountability for outcomes nearly impossible to assign. The modern equivalents — the economists who missed 2008, the strategists who confidently predicted election outcomes that didn't materialize, the consultants whose reorganization plans produced the opposite of what was promised — are operating in the same basic structure.

None of this means expertise is worthless. Some medieval physicians were genuinely skilled diagnosticians who helped patients despite their theoretical framework. Some economists do produce useful analysis. The point isn't that credentials are meaningless. The point is that credential-based authority is remarkably resistant to outcome-based accountability, and that this has been true for a very long time.

The plague doctor kept his practice. Plan accordingly.