Guide
The Universal Product Roadmap: A Product Management Field Manual
The frameworks, formulas and diagrams that actually get used in the room when someone asks why this and not that.
17 pages · Aug-2026
Resources
What we have written down.
Longer pieces on the questions clients keep bringing us. Free, and worth the few details we ask for.
Guide
The Defensible Number: A Complete Lean Six Sigma Field Manual
Every DMAIC phase, every formula worth memorising, and a test selector that tells you which statistic to run.
21 pages · Aug-2026