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 Djellil Bouzidi.
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.
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.
Publication: 8 September 2026
The book
Why Strong Systems Break and What Builders Do Differently
Now available for Kindle pre-order
Available September 8, 2026
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.
The Airport Bathroom Test explores the missing variable in resilience: whether institutions can convert detection into timely correction.
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.
▸ Kindle pre-order available. Publication: 8 September 2026.
// praise
"Abdeldjellil Bouzidi has done something wonderfully subversive: he has made the humble airport bathroom a portal into the hidden architecture of civilisation. The Airport Bathroom Test is clever, provocative and irresistibly readable, the sort of book that changes the way you look at systems, institutions, and toilets. The central conceit is wonderfully simple: bridges, ships, and cockpits become windows into the invisible architecture of institutions, with Time, Trust and Cooperation providing the deeper diagnostic framework. As in so many books about systems, conceptions of time dominate how we view, and achieve, success or failure. The Sprinter-Builder distinction alone is worth the price of admission; I suspect I'll be stealing the distinction for years. Memorable!"
"When Chile issued the world's first sovereign sustainability-linked bond, we learned that markets do not price promises; they price the machinery behind them. Bouzidi helped shape that machinery. His TTC framework, Time, Trust and Cooperation, distills what I saw firsthand at the Debt Office: institutions endure when all three hold together, and become fragile when one begins to fail. A clear, usable lens for anyone who must turn long-term commitments into credible action."
"The connection Bouzidi draws between the statistical office and the Airport Bathroom Test stayed with me. This book deserves to be widely read."