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

Build tracks arranged by responsibility level.
TrackL1UserOnly youL2Power userYour team sees a bad document or a wrong figureL3BuilderColleagues depend on something you builtL4IntegratorCompany or lab systems and real data are in the loopL5OperatorWork stops when it breaks, and it must survive you leaving
Track 20AI harnessesT20-L01

Same Model, Different Harness: See What the Program Around the AI Changes

by Opus 5.5Not started12 min read		T20-L02

Choose a Harness by Testing It on Five of Your Own Tasks

by Opus 5.5Not started15 min read		T20-L03

Run a Harness on a Model You Control: Local Server or Team Gateway

by Opus 5.5Not started18 min read		T20-L04

Set Up a Harness So a Mistake Stays Small: Container, Rules, Keys and Network

by Opus 5.5Not started20 min read		T20-L05

Run Coding Agents for a Team: Shared Rules, a Test Set, Nightly Jobs and No Lock-In

by Opus 5.5Not started20 min read

Every book keeps its address even while its title and content evolve.