Can your system correct what it detects?

Does it pass the Airport Bathroom Test?

Test the correction capacity of a company, a government, or a family system. Twelve questions across Time, Trust, and Cooperation. Resilience is not an average. It is the product. One weak dimension collapses the whole.

A diagnostic companion to The Airport Bathroom Test, by Abdeldjellil Bouzidi.

→ Run the diagnostic

12 scored questions + 1 additional, unscored question

The Airport Bathroom Test by Abdeldjellil Bouzidi

Available internationally in paperback and on Kindle.

The Airport Bathroom Test

Why Strong Systems Break and What Builders Do Differently

By Abdeldjellil Bouzidi

Amazon store

Selected: United States (www.amazon.com)

Published in English. Choosing a marketplace does not change the language of the book.

Published in Airport World

What a well-run airport can teach the world

By Abdeldjellil Bouzidi

What everyday airport services reveal about how organisations turn information into action and keep things working.

Read the article ↗

ABT Case Study // 01

When the backup isn’t a backup

Infrastructure & resilience

A communications outage at Philadelphia follows a documented upgrade programme. The ABT question: what did the correction cover, what was tested, and is that evidence still current?

Incident: 21 September 2026

Read the case study →Earlier commentary: Gemini ↗
// why an airport bathroom?

A small system that reveals a large one

An airport bathroom is a deceptively simple system. When a lock breaks, can the organisation detect the problem, verify it and correct it before the next traveller arrives?

Institutions fail in the same way. Not because problems are invisible, but because detection does not reliably lead to correction.

The Airport Bathroom Test reveals where that correction chain breaks.

01 Detect
Time: how fast a weak signal is seen
02 Verify
Trust: whether evidence is believed before it is denied
03 Correct
Cooperation: whether correction happens before blame

Mapped to Time × Trust × Cooperation

What will you learn?

You will receive a resilience score across Time, Trust and Cooperation, plus the weakest link in your correction chain.

// the book

The book

Why Strong Systems Break and What Builders Do Differently

We have spent decades improving detection. The next challenge is correction.

Organisations now produce more alerts, audits, dashboards, risk reports and early-warning indicators than ever before. Yet obvious failures often remain unresolved.

A broken tap can reveal how an entire organisation works. The Airport Bathroom Test follows that question from everyday services to financial markets and public institutions, exploring how time, trust and cooperation shape the ability to put things right.

The core framework

  • ▸ Time
  • ▸ Trust
  • ▸ Cooperation

Key ideas developed in the book

  • · The correction chain
  • · The Zero Factor
  • · Institutional rhythm

What happens when a system sees the problem, but still cannot act?

Resilience is not the absence of failure. It is the capacity to detect, verify and correct failure before the system loses its rhythm.

Praise for the book

“The Airport Bathroom Test is clever, provocative and irresistibly readable…”

“A clear, usable lens for anyone who must turn long-term commitments into credible action.”

Patricio Sepúlveda

Former Head of Chile's Public Debt Office

“This book deserves to be widely read.”

Rupesh Madlani

CEO, Bankers without Boundaries

A note on how this book was written

This book draws on my research and professional experience across investment banks, asset managers, think tanks and public-policy work, including work on Chile’s sovereign sustainability-linked bond. The TTC framework and the arguments developed here reflect my own thinking and judgement.

I used AI tools to help draft and revise passages in English, test formulations and clarify arguments. I revised the manuscript with input from a developmental editor and early readers. I checked the text and made all final editorial decisions. I take full responsibility for the book's content, sources and conclusions.

Abdeldjellil Bouzidi, September 2026

// updates

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