The Sacrificial Principle

“A banker is a fellow who lends you his umbrella when the sun is shining, but wants it back the minute it begins to rain.”
— Mark Twain

6. February 2026

Peter Senner co-created with Claude

Why one must fall so the others can continue

Munich, 1872. Adele Spitzeder promises 10% interest—per month. Thousands invest. The "Dachauer Volksbank" grows exponentially. Two years later: collapse. Spitzeder convicted of fraud. Four years imprisonment.

The verdict stated: She took deposits, paid interest from new deposits, collapsed when inflow stopped.

The same principle operated simultaneously in every bank.

Fractional reserve banking functions structurally identically: deposits are lent out, interest paid from new business, stability depends on continuous trust. The difference? Banks had licenses. Spitzeder didn't.

Not the behavior distinguished them. The institutional position.

The Acceleration Loop

Spitzeder's system had a feature that made it particularly lethal: she paid interest immediately upon deposit.

Not monthly. Not annually. Immediately.

People would stand at the counter and run the loop in real time:

• Deposit 100 → receive 10 interest instantly
• Deposit 10 → receive 1 interest instantly
• Deposit 1 → receive 0.10 interest instantly
• Continue until the smallest coin

A self-reinforcing loop with no time delay.

Structurally, this meant:

Immediate escalation. No lag between deposit and growth. The system accelerated itself. Every visit multiplied the capital.

Mathematical inevitability. The system could only grow through external money. Internally, it was a zero-sum game with exponential illusion. Collapse wasn't probable—it was arithmetically guaranteed.

No exit possible. Those who didn't participate lost relatively (others were "really" earning). Those who participated strengthened the bubble. Rational actor = trapped in the loop.

Spitzeder created a machine that fed itself—until external money dried up.

The Acceleration Loop

Spitzeder's system had a feature that made it particularly lethal: she paid interest immediately upon deposit.

Not monthly. Not annually. Immediately.

People would stand at the counter and run the loop in real time:

• Deposit 100 → receive 10 interest instantly
• Deposit 10 → receive 1 interest instantly
• Deposit 1 → receive 0.10 interest instantly
• Continue until the smallest coin

A self-reinforcing loop with no time delay.

Structurally, this meant:

Immediate escalation. No lag between deposit and growth. The system accelerated itself. Every visit multiplied the capital.

Mathematical inevitability. The system could only grow through external money. Internally, it was a zero-sum game with exponential illusion. Collapse wasn't probable—it was arithmetically guaranteed.

No exit possible. Those who didn't participate lost relatively (others were "really" earning). Those who participated strengthened the bubble. Rational actor = trapped in the loop.

Spitzeder created a machine that fed itself—until external money dried up.

The Tempo Problem

Here's the crucial insight: She just did it too fast.

That's the actual difference. Not the principle. The tempo.

If Spitzeder had:

• Promised 3% annually instead of 10% monthly
• Scaled over 20 years instead of 2
• Slowly built institutional legitimacy

She might have become a bank.

Fractional reserve banking is the same principle—just normalized over centuries.

Banks do it slowly enough that:

• Trust accumulates
• Regulation emerges (which then protects the system)
• Crises can be absorbed
• The system becomes "too big to fail"

Too fast = visible → collapse → conviction
Slow enough = invisible → institution → legitimacy

150 Years Later: Greensill Capital

London, 2021. Greensill Capital implodes. Lex Greensill had built supply-chain finance—companies could monetize receivables immediately instead of waiting for payment. Growth: spectacular. Political proximity: David Cameron as advisor. Investors: convinced.

Then the insurer withdrew coverage. Domino effect. Collapse. Billions in losses. Political scandal.

Greensill's statement afterward: "I did nothing wrong."

Structurally, he was right.

Supply-chain finance works the same everywhere:

• Assess risks optimistically (otherwise no business)
• Refinance through trust (otherwise no scaling)
• Use political proximity (otherwise no legitimacy)
• Depend on collateral (otherwise no investors)

What Greensill did, the industry does.

The question isn't: Was Greensill unserious? The question is: What distinguishes a collapsed player from a functioning one?

Timing + luck.

Who survives → was serious. Who collapses → was unserious. Ex-ante? Identical structure. Identical incentives. Identical risk.

Same logic as Spitzeder. Greensill scaled too fast. Too aggressive. Too visible. The industry does the same—but more carefully, more slowly, institutionally secured.

Greensill didn't fail because of the principle. He failed because of the tempo.

The Sacrificial Principle

The system needs occasional victims to legitimize itself—without changing.

Greensill falls. The reaction:

• Competitors distance themselves → "We're not like him"
• Regulators report success → "We cracked down"
• Politics demonstrates surprise → "We were deceived"
• Industry continues → "The bad apples are out"

Function fulfilled.

One is sacrificed. The structure remains. The game continues.

Spitzeder was convicted. Banks with fractional reserve banking became institutions. Greensill collapsed. Supply-chain finance continues.

Not because Greensill did something fundamentally different. But because one had to fall so the others wouldn't have to.

Cantona and the Prisoner's Dilemma

2010: Footballer Eric Cantona called for a coordinated bank run: "Withdraw your money, crash the system." Target date: December 7, 2010.

Response: minimal.

Why did it fail?

Prisoner's dilemma:

• Those who withdraw first risk social ostracism ("panic-mongers")
• Those who wait hope for stability
• Those who withdraw late get nothing (bank makes a withdrawal stop)
• Coordination fails because each rationally bets on others' cooperation

And Cantona himself? Didn't withdraw on December 7.

He understood the structure: As an individual, he loses if others don't participate. With coordinated mass, the system collapses that everyone needs.

Cantona proved impossibility through his own behavior.

He calls for action. He doesn't act. Because he understands: Without coordinated mass, the individual loses. With coordinated mass, the system everyone needs collapses.

Structurally:

• Spitzeder fell → depositors withdrew (no state protection)
• Greensill fell → insurers withdrew collateral (no systemic relevance)
• Banks 2008+ → nobody withdrew (too big to fail, implicit state guarantee)

Who falls doesn't depend on behavior. But on institutional position.

Banks are systemically protected. Greensill wasn't. Spitzeder certainly wasn't.

All three operate structurally similar business models. But only those without institutional backing collapse when trust crumbles.

Paradoxical Interaction: All are guilty. None are at fault.

This isn't a story about fraud.

Spitzeder acted rationally. Greensill acted rationally. Banks act rationally. Each optimizes within their structure. Each does what the system rewards.

And precisely because of that, the system regularly produces collapses.

The PI structure:

• All operate fragile business models (otherwise no returns)
• All build on continuous trust (otherwise no refinancing)
• All know the system can tip (but nobody knows when)
• None can exit (whoever exits loses immediately)

Rational → Collectively irrational.

Individuals act sensibly. The system produces catastrophes. Nobody wanted it. Everyone contributed.

"All are guilty. None are at fault."

Conclusion: The Game Continues

Greensill is history. Supply-chain finance continues. New players, same structure. Eventually the next one will fall.

Not because they're less serious. But because the structure occasionally needs victims to legitimize itself.

Spitzeder. Greensill. The next one is coming.

The system purifies itself through ritualized exclusion. One falls. The others continue.

Not a scandal. Structural logic.

Related Posts:

Structural sacrifice mechanisms:

Warnings that fail:

Warnings that fail:

On piinteract.org:

• ["Loyalty Over Competence"] — Those who believed got in early. Competence was irrelevant — trust was the currency.
• ["The Devil Shits on the Biggest Pile"] — Spitzeder's structure rewarded early entrants. The system selected for accumulation, not merit.
• ["Reframe Failure as Success"] — Banks did the same — more slowly. The fraud becomes infrastructure. The infrastructure becomes normalised.
• ["See the Pattern, Not the Symptom"] — The scapegoat is structural, not personal. The system requires a victim to maintain the fiction.

Paradoxical Interactions (PI): When rational actors consistently produce collectively irrational outcomes—not through failure, but through structure.

Peter Senner
Thinking beyond the Tellerrand
contact@piinteract.org
www.piinteract.org