How this guide is organised

Same rhythm as the first guide. Every teaching chapter follows:

   In one sentence   -> the whole point, compressed
   Where we are      -> the problem this solves, in context
   How it works      -> the mechanism, in depth
   Worked example    -> a concrete, checkable walk-through
   Practice          -> hands-on, in your own lab or a legal target
   Common mistakes   -> the ways engineers get this wrong
   Check yourself    -> questions (answers in Appendix G)
   Further reading    -> books, primary sources, talks, tools

Hands-on and project chapters use a brief / deliverable / definition-of-done / rubric format instead.

Honesty markers, as before:

   Simplified:  a true statement that omits detail you will eventually need
   Debated:     practitioners genuinely disagree here
   Dangerous:   a technique that is illegal or destructive outside a lab you own