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Work · Guided lesson

Compare causal hypotheses to their supporting evidence

About 12 minutes · 3 reading + 9 practice and checks
Time includes reading, practice, and questions. Extra videos or further study are optional.
See this course’s project requirements

A fictional low-severity office incident review with an event timeline, fact/unknown table, contributing-condition map, corrective-action owner list and evidence-based follow-up check.

Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.

What to include

  • Save an evidence inventory with privacy boundary; include the original-case decision evidence and a separate changed-case result.
  • Save source-linked timeline and two follow-up questions; include the original-case decision evidence and a separate changed-case result.
  • Save causal comparison with supported/unsupported claims; include the original-case decision evidence and a separate changed-case result.
  • Save condition-linked action register with physical authority boundary; include the original-case decision evidence and a separate changed-case result.
  • Save follow-up review with two exceptions and next owner; include the original-case decision evidence and a separate changed-case result.
  • Save incident-learning packet with two specific follow-ups; include the original-case decision evidence and a separate changed-case result.

Review and revise

Use these criteria to check your work and choose what to improve.

  • The final packet uses the supplied task-specific constraints and all six records agree.
  • Every result can be traced to an identifier, input, calculation or stated decision rule.
  • Changed-case practice updates dependent records and keeps holds or uncertainty visible.
  • The packet states the learner role, authority boundary and specific next verification needed before real work.
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Before you begin

The idea in everyday life

Original fictional workplace practice; paper or a local document is sufficient. The rules and records below are supplied for this exercise, not asserted universal workplace policy. Poplar hypotheses H1 delivery overflow lack of storage; H2 cart operator carelessness; H3 route check covers wrong corridor. Evidence E6 approved layout no specified temporary storage; E7 check form names corridor B, event corridor A. No evidence of operator inattention.

The idea

A cause claim needs a plausible mechanism and evidence; considering multiple contributing conditions is more useful than asserting personal fault from one observation.

Follow along

Compare causal hypotheses to their supporting evidence — worked practice

A cause claim needs a plausible mechanism and evidence; considering multiple contributing conditions is more useful than asserting personal fault from one observation.

Poplar hypotheses H1 delivery overflow lack of storage; H2 cart operator carelessness; H3 route check covers wrong corridor. Evidence E6 approved layout no specified temporary storage; E7 check form names corridor B, event corridor A. No evidence of operator inattention. Use paper or a local document. Preserve the original case and make a separate changed-case record.

  1. 1. Step 1

    Map evidence to each hypothesis rather than scoring opinions.

    You should see: H1 supported by E6; H3 by E7; H2 unsupported.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  2. 2. Step 2

    Identify mechanisms and remaining questions.

    You should see: Storage/inspection-scope gaps could permit blocked route; actual placement still unknown.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  3. 3. Step 3

    Avoid calling hypotheses a qualified final cause.

    You should see: Provisional contributing conditions for authorized team review.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  4. 4. Step 4

    Save causal comparison with supported/unsupported claims.

    You should see: Two evidence-supported avenues, one unsupported blame claim.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

Now change one thing

New record shows suitable temporary storage was available and used. Which hypothesis needs reassessment:H1, H2 or H3?

Your work

What to finish

Save causal comparison with supported/unsupported claims; include the original-case decision evidence and a separate changed-case result.

Common mistake

Watch for this

Stopping at“be careful”or blaming a worker instead of testing the documented storage/check-system gaps.

How can I tell I understand it?

Using the supplied identifiers, I can save causal comparison with supported/unsupported claims. My changed-case record names the revised condition and explains which dependent decision it changes.

Try 3 questions

Quick knowledge check

Answer all 3 questions. Get at least 2 right and the lesson completes automatically.

Not yet passed

You’ll get an explanation for each answer. Signed in? Your results save to your account.

1Which Poplar hypothesis is unsupported by the supplied evidence?
2Why does Poplar E7 support H3?
3Do Poplar H1/H3 records prove complete final causation?
0 of 3 answeredApply the lesson to a short question, then review the explanation.
3
Finish this lesson

Pass the check. We’ll save the progress.

Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.

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Tools, templates, and lesson sources

Tools and templates

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Sources and further reading

Explore the references behind this lesson.

19-5012.00 - Occupational Health and Safety Technicians
Source & access notes · checked 2026-10-01

Occupational task and responsibility context; the exercise policies and quantities are original fictional inputs. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

Incident Investigation - Overview | Occupational Safety and Health Administration
Source & access notes · checked 2026-10-01

Public agency or educational context; no source exercises are copied and no simulated threshold is presented as an official rule. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

Safety Management - Hazard Identification and Assessment | Occupational Safety and Health Administration
Source & access notes · checked 2026-10-01

Public agency or educational context; no source exercises are copied and no simulated threshold is presented as an official rule. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

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