If you are learning now
Repeat the laboratories, change one variable, and learn to recognize the shape of growth.
Published on Amazon · Kindle editions in English and French
The Critical Path
How I Find the Limit Before the User Reaches It
Available now
Published on 17 August 2026, the book shows how measurement becomes a method, how ordinary work becomes expensive at scale, and how a system can remain fast and understandable long after the first delivery.
Three ways to read it
Useful at different levels of responsibility
If you coordinate
Ask for the operation, unit, tested volume, and the time or failure at which the limit appears.
If you design
Separate stages, compare complete paths, preserve the result, and leave enough margin for the next growth.
Read on Amazon
Explore the official Kindle editions
English edition
Open the Amazon book page for the Kindle edition, Kindle Unlimited access, and Amazon’s official reading preview when available.
French edition
Open the Amazon book page for the French Kindle edition and Amazon’s official reading preview when available.
GitHub · DemoCriticalPath
Reproduce the experiments
The book explains the question and the decision. The repository preserves the code, measurements, logs, environment, and verified outcomes.
18demos
90logs
5runs / demo
100%synthetic data