One method, five levels of responsibility
Every book applies the same four quadrants: Structure it, Understand it, Choose tools, Build it. What changes from Level 1 to Level 5 is who is affected when it goes wrong: at Level 1 only you, at Level 5 everyone who relies on what you run.
How to read the matrix
1 books
Showing one responsibility level.
Build
Make something that runs
| Track | L5OperatorWork stops when it breaks, and it must survive you leaving |
|---|---|
| Track 10Data & analysis | T10-L05Keep a Data Pipeline Right for Years, and Trace Any Published Number to Its Source |
Every book keeps its address even while its title and content evolve.