Bioethics of evidence
Mon, Aug 31, 2026 · Week 2 · Principles of Biomedical Technology (Principles of Biomedical Science)
Today's goal: Debate whether forensic and biomedical evidence should ever be trusted blindly, and defend a claim with reasons.
This is a model of the work you should turn in today. Use it to check your own: match the structure and the level of detail, do not copy it. Your data and wording should be your own.
Parallel case for modeling only: Should a doctor rely on the heart-rate reading from a patient's fitness watch to decide on treatment?\n\nClaim: A fitness watch reading should not be used to make a medical decision on its own, because a consumer device is only as reliable as the conditions it was measured under.\nEvidence: Wrist-worn optical heart-rate sensors are known to lose accuracy during vigorous exercise, on darker skin tones, and when the band is loose, sometimes reporting a rate that is off by twenty beats per minute or more compared with a clinical electrocardiogram.\nReasoning: A number on a bright screen feels precise, but the watch estimates heart rate indirectly by shining light through the skin, and that estimate depends on fit, motion, and skin. A clinician who treats the reading as a verified fact skips the question of how it was produced. The device is a starting point, not a diagnosis, so a responsible decision confirms the reading with a validated clinical measurement before acting on it. That is why medical devices are cleared through testing that consumer wearables are not, and why the person reading the number, not just the number, carries responsibility for how it is used.
This model shows the level of evidence and organization needed to complete: A short written claim-evidence-reasoning paragraph on a parallel bioethics-of-evidence case (a consumer fitness tracker's heart-rate reading), modeling the exact CER format and depth students will use for today's own debate without answering today's prompt.
- Write one defensible claim.
- Choose specific evidence that supports the claim.
- Explain the scientific rule that connects the evidence to the claim.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Post your CER to the discussion board or hand in the written copy before you leave.
Claim ceiling: Today's evidence supports a classroom claim about bioethics of evidence. It cannot prove causation, diagnose a real patient, or justify action outside this room.
One exam-style question that uses exactly what you practiced today. Try it before you reveal the answer, then read why each choice is right or wrong.
Tap an answer to see the full explanation. Nothing is recorded or graded.
It builds this reusable test skill: Judging whether a measurement can be trusted based on method and handling.
- Name the concept or data pattern being tested.
- Cross out choices that violate that rule or the evidence.
- Justify the best remaining choice before checking the answer.