All courses / AI Purple / Module 7 / Chapter 29
Learning objectives
After the lesson the participant can:
- Explain the verdict on each part of the thesis and what remains unproved for each.
- Compare what is supported by sources and design with what is only illustrated by the fictional cases.
- Classify the twelve questions as answered by design or open, giving the reason for the open ones.
- Draft a first-week plan for a loop with a concrete output for each of the five days.
Key concepts
- Verdict on the thesis
- Parts 1, 2, 4 and 5 held with qualifications and part 3 held in part. No part earned a plain held, the refutation conditions did not occur, and the fictional cases illustrate the design without testing it.
- Part 3 restated
- A loop closed by machines alone can show that the known still works and cannot by itself show that its coverage is real. Regression, replay and the re-run of a known scenario are mechanical and properly automated.
- Two operating rules
- The closure rule and the independence principle carry the book. Six further rules serve them: coverage with evidence age, expectation before result, scope as code with the stop outside, ceilings with the lowest governing, the register as tier 0, and a named person who decides.
- Twelve questions
- Six are answered by design, which is the book's own conclusion, and six are open because they turn on people over years, on what supervisors and national law decide, and on how long a stop path stays quick.
- First-week plan
- Five working days: Monday inventory, Tuesday target, Wednesday register, Thursday claim and rules, Friday owners. By Friday the organisation can say what it has tested, what is closed and who holds the stop.
Interactive exercises
Do them here and get feedback at once. Choose a card and then where it belongs, or drag it.
Interactive exercise 1 · Match
A first step for Monday, by role
Match each role with the first step the chapter gives it for Monday.
Interactive exercise 2 · Put in order
A first-week plan for a loop
Put the five days of the chapter's first-week plan in order, from Monday to Friday.
Teaching plan
| 15 min | The teacher presents the verdict table: for each part of the thesis, the support in sources and design, what only the illustrative cases show, and what remains unproved. |
| 15 min | Groups take three of the twelve questions each, state the best current answer and argue whether its status is answered by design or open. |
| 10 min | Reading of the author's six projections with their labels; each participant names one trigger that would change one projection. |
| 25 min | Exercise: write the first-week plan for the participant's own loop and the Monday step for the participant's own role. |
| 10 min | Closing round: each participant states the one record they will ask for on Monday and what they will do if it is missing. |
Discussion
- The author finds that no part of the thesis earned a plain held, and says the book searched only its own sources. How does that admission change how you would use the book's rules in your organisation?
- The first part of the thesis is partly a definition, and a definition is not refuted by a case. What evidence would persuade you that a separate purple team does worse, or better, than a loop held by roles?
- Of the six open questions, which matters most to your organisation in the next two years, and what would you measure to narrow it?
Written exercise
Exercise · 25 minutes
A first-week plan for a loop
Write the first-week plan of the chapter for your own organisation, with a named person and a concrete output for each day. Monday: list every tool and assistant in testing and detection with its usage mode, owner and stop holder, and mark the first with no stop path outside itself. Tuesday: build the priority list for one service, mark the hard-to-emulate entries and set a review date. Wednesday: count the findings by the five states and check one closed finding for re-test date, variants and signer. Thursday: write the coverage statement for three techniques in five parts and check that a signed manifest names a stop holder outside the system being stopped. Friday: name the closure owner and the coordinator, diarise the review of the independence statement and inform the employee representatives.
Deliverable: A five-day plan with a named person and an output per day, plus the participant's own first step for Monday.
Self-test
Choose an answer to see whether it is right, or open the answer below each question.
How did the third part of the thesis fare in the author's verdict?
Show the answer
D. It held in part and was restated for what a machine-only loop can and cannot show.
Part 3 held in part. The strong form, that a machine-only loop verifies nothing new, was refined, because regression and replay are mechanical and a machine can show that something known to work still works.Which two rules does the author say carry the book?
Show the answer
B. The closure rule and the independence principle.
The chapter states that two rules carry the book, the closure rule and the independence principle, and that a reader who keeps only these has kept most of it. Six further rules serve them.What first step does the chapter give the closure owner for Monday?
Show the answer
A. Ask of one finding the register calls closed its re-test date, its variants and its signer.
The closure owner's first step is to test one closed finding against the closure rule: re-test date, variants and signer. The other options are the first steps of the white-team lead, the CISO and the procurement lead.