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.
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| 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 16Choose tools | T16-L01Pick the Right Tool for One Task by Trying It | T16-L02Choose Tools Your Team Can Use, and Afford | T16-L03Test a Tool on Your Own Work Before Your Team Depends on It | T16-L04Replace a Tool Without Losing Your Work | T16-L05Keep Your Toolset Useful |
Every book keeps its address even while its title and content evolve.