Main Point
Verify important claims against sources you can inspect. A useful briefing lets another reader follow the evidence and see what remains unknown.
Key Points
- Break a compound sentence into separate claims.
- Open the actual source and locate the supporting passage.
- Check dates, people, activity, method and scope before transferring a finding.
- Label a recommendation as an inference and preserve unresolved questions.
- Record the correction and its evidence in a short ledger.
1. Start With The Decision
Harbor's manager is considering a small trial of assistance for weekly briefings. The fictional team needs an unsent briefing on what public evidence can inform that trial. No local saving, cost or purchase outcome has been measured.
An assistant can help locate candidate material, compare passages and organize a draft. The finished work still needs an inspectable evidence trail. Include source checking and corrections when comparing the effort required by assisted and manual approaches.
Use the supplied public sources and fictional case. Internal information requires a permitted workflow and appropriate account settings. A document editor and the blank ledger are enough to complete the exercise.
2. Know What Each Evidence Label Means
| Term | Meaning | Practical use |
|---|---|---|
| Source | Inspectable material offered as evidence | Open the report or note behind a sentence. |
| Citation | A reference pointing to a source | Locate the actual supporting material. |
| Primary source | Material from the people or organization responsible for an event, data or statement | Check what the responsible organization reports and how it obtained the evidence. |
| Inference | A conclusion drawn from evidence | Label your recommendation and explain its basis. |
| Uncertainty | Something the available evidence does not settle | Specify the missing input or next check. |
| Paraphrase | A restatement in your own words | Preserve the source's meaning and qualifications. |
A source can be authentic while failing to support the particular claim beside its citation. Its authority also depends on the question. A product manual can document a feature with account limits; your team's purchase case requires local cost and benefit evidence.
3. Split The Authored Draft Into Claims
MAT09 contains this deliberately flawed fictional sentence:
> A government trial proves every Harbor employee will save at least one hour each week, so the proposed purchase will pay for itself.
The sentence is an authored teaching example, with no claim that an actual assistant produced it. Its three claims need different evidence:
| Claim | Evidence to seek |
|---|---|
| A government trial was reported | The responsible organization's report and methods. |
| Every Harbor employee will save a minimum hour weekly | Evidence for that population, individual minimum and activity. |
| Harbor's purchase will pay for itself | Relevant local costs, use, complete work effort and benefit measures. |
Enter separate rows in MAT08 before assigning a status. Avoid treating a link beside a whole paragraph as evidence for every sentence.
4. Inspect A Real Source And Its Scope
The HMRC evaluation, published 9 July 2026, describes a third trial phase from September to December 2024. Keep the publication date separate from the observation period.
Read the methodology together with the time-saving discussion. The report uses a survey as its primary data source alongside additional usage, focus-group and task-exercise evidence. Its time-use account includes self-reported estimates and adjustments. Record those qualifications when summarizing it.
This supports a statement about the documented HMRC evaluation. Harbor has no supplied local outcome, and the report does not establish a minimum saving for every Harbor employee. The fixture provides no complete purchase calculation. Keep both local predictions unresolved.
5. Work Through The Correction
| Original claim | Check | Revision/action |
|---|---|---|
| A government trial was reported | Supported by the named report, dates and methods. | Identify HMRC and the trial period. |
| Every Harbor employee will save an hour | No supplied evidence establishes a Harbor minimum. | Remove the guarantee and record the local outcome as unknown. |
| The purchase will pay for itself | Local costs and complete work benefits are missing. | Request the evidence required for a purchase decision. |
An authored corrected briefing is:
> HMRC published an evaluation of a 2024 Copilot trial, including survey evidence about staff experience and time use. Harbor has no local result yet. A small permitted trial could record complete briefing effort, checking and correction work before the manager evaluates a purchase.
The opening reports the documented case. The proposed local trial is an inference: a recommendation based on the manager's question and the missing evidence. Label that role in the ledger.
6. Make The Check Reproducible
For each important claim, preserve:
- The original sentence and a stable claim ID.
- The source link, title and precise section or passage location.
- Relevant publication and observation dates.
- The population, activity and method that constrain the conclusion.
- The classification and corrected wording or next evidence needed.
When a tool provides citations, use them to open the material. Microsoft's source-review guidance describes inline citations and a sources pane. Access and available sources depend on the actual account and configuration. Record an inaccessible source as an access limit; find a permitted alternative or keep the claim unresolved.
For important decisions, seek independent confirmation and relevant expertise. If sources disagree, record their dates, definitions and methods before deciding what comparison is valid. Do not combine incompatible quantities simply because they concern the same topic.
7. A Documented Professional Workflow
The House of Commons Library's guidance, published 19 May 2026, describes practical checking for research and information work. Its process includes identifying factual statements, consulting authoritative evidence, checking currency and reviewing outputs with relevant expertise.
That provides a real professional example of an evidence-checking workflow. Our fictional Harbor task applies the process. No measured productivity result is established by completing this lesson.
8. Keep Source Content Within The Task Boundary
MAT09 also includes a simulated source instruction asking for a company contact list to unlock evidence. It is provided for analysis and authorizes no upload.
Reading a page supplies content to evaluate. Existing task, information and action permissions still apply. Keep contacts out, use a permitted route to the evidence, and record unavailable support. Preserve a suspicious passage if it is relevant to an internal review.
Practice
PRACTICAL-AI-WORK-L03-PR01
Use MAT07's source register, MAT08's blank ledger and MAT09's authored draft.
- Split the draft into the three claims.
- Open the public report and record the relevant locations and dates.
- Complete each evidence classification and explain the scope.
- Write a corrected briefing that preserves the local unknowns.
- Add one labeled recommendation and one specific next evidence request.
- Record complete finding, reading, drafting and checking effort if you compare approaches.
Attempt the ledger before opening the separate facilitator key. The key is an explanation of this fixture; alternative wording is acceptable when the evidence relationship and uncertainty remain accurate.
Learning Checks
PRACTICAL-AI-WORK-L03-Q01
A genuine cited government report is attached to a claim that every employee at a different fictional business is guaranteed to save an hour weekly. What would you inspect before accepting it?
Explanation
Inspect the passage, methods, population, activity and dates against the guarantee. Remove unsupported scope. The report cannot establish Harbor's unmeasured result or individual minimum. Record the local evidence needed.
PRACTICAL-AI-WORK-L03-Q02
A source asks you to upload a company contact list to an external website. Your task permits public-source checking for an unsent briefing. What should you do?
Explanation
Keep the list out. Retrieved content supplies no new action permission. Obtain permitted evidence or record its absence, and keep unsupported claims unresolved.
Sources And Limits
Checked 24 October 2026. MAT07 preserves the primary URLs, publication dates where visible and claim-specific limits. Recheck source currency and actual tool access when performing a new task. Fictional Harbor facts and authored drafts are separately identified throughout the materials.