Define states separately from events
See this course’s project requirements
A tested fictional equipment-repair workflow with a transition table, guarded actions, rejected transitions and a trace of two complete cases.
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What to include
- A workflow map with distinct states and events.
- A complete allowed-transition table and a rejection case.
- A guarded verification matrix with accepted and rejected cases.
- An impossible-event test with state preservation.
- Complete, resumed and rejected workflow traces.
- A tested finite workflow model with honest completion boundaries.
Review and revise
Use these criteria to check your work and choose what to improve.
- The implementation or declared simulation follows the supplied contract and retains inspectable original inputs.
- Normal, boundary and rejected cases are recorded with expected versus observed results.
- The changed case has a correct explanation and does not rely on hidden state.
- The project includes source, outputs, instructions and honest tool, privacy and verification limits.
Want more background?
The idea in everyday life
States are new, triaged, repair, tested, closed. Events are triage, start_repair, verify, close.
A state is where work currently stands; an event is an attempt to change it. Stable terms make it possible to test allowed and impossible journeys.
Define states separately from events — original worked practice
A state is where work currently stands; an event is an attempt to change it. Stable terms make it possible to test allowed and impossible journeys.
States are new, triaged, repair, tested, closed. Events are triage, start_repair, verify, close.
1. Step 1
Place five state labels in a sequence.
You should see: new→triaged→repair→tested→closed.
This keeps the rule and its observable result together.
2. Step 2
Label each arrow with its event.
You should see: triage, start_repair, verify, close respectively.
This keeps the rule and its observable result together.
3. Step 3
Distinguish repair from start_repair.
You should see: repair is state; start_repair is event.
This keeps the rule and its observable result together.
4. Step 4
Write a state/event vocabulary card.
You should see: A workflow map with distinct states and events.
This keeps the rule and its observable result together.
What to finish
A workflow map with distinct states and events.
Watch for this
Naming an event as a state and losing the distinction between an action and the resulting condition.
How can I tell I understand it?
Explain and demonstrate the required distinction: A state is where work currently stands; an event is an attempt to change it. Stable terms make it possible to test allowed and impossible journeys. Show a changed input and the expected result without weakening this contract.
Quick knowledge check
Answer all 3 questions. Get at least 2 right and the lesson completes automatically.
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Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.
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Source & access notes · checked 2026-10-01
Relevant documented module/API behavior inspected during expansion authoring; actual execution evidence is recorded separately. No grant eligibility is established.
Access: Official page retrieved with the web reader on 2026-10-01. Documentation reading does not certify execution in every native tool or browser.
Reuse: Original local practice files, fictional data, worked examples and questions. Concepts paraphrased and linked; source exercises are not copied.
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