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
5 books
Swipe sideways to compare responsibility levels. Track names stay visible while you browse.
Build
Make something that runs
| Track | L1UserOnly you | L2Power userYour team sees a bad document or a wrong figure | L3BuilderColleagues depend on something you built | L4IntegratorCompany or lab systems and real data are in the loop | L5OperatorWork stops when it breaks, and it must survive you leaving |
|---|---|---|---|---|---|
| Track 10Data & analysis | T10-L01Ask a Spreadsheet a Question and Check Which Rows It Used | T10-L02Clean a Messy Export Once, So Your Team Can Refresh It | T10-L03Build an Analysis Your Colleague Can Rerun and Get the Same Numbers | T10-L04Connect Your Analysis to a Live System, and Stop Bad Data Before It Reaches Anyone | 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.