Ethicist: Studies have documented the capacity of placebos to reduce pain in patients who believe that they are receiving beneficial drugs.
Conclusion
Administering placebos is nonetheless ethically questionable.
Evidence
Even if a placebo benefits a patient, a doctor might have prescribed it just to give the patient the satisfaction that something was being done.
Evaluate
If we were just trying to prephrase a Missing Link assumption to connect Premise language to Conclusion language we'd get
prescribed a placebo just to give the → ethically questionable patient satisfaction
If we were trying to make an objection that "administering placebos is ethically fine", we might say,
Goal
Look for an answer saying , or an answer that, if negated, would allow us to argue that administering placebos is ethically fine.