GreyBrain Pulse · Published 1 Oct 2026
One diagnosis, explained to three people
The clinician · What’s advancing · F3
The same explanation in four registers, plus a list of what each one quietly dropped.
Why this matters for your role
The clinician’s skill: ask which system, population, comparator and outcome were actually studied.
Your worked example
A fictional teaching exercise compares a task-specific imaging system evaluated in a screening programme with a general-purpose chatbot that has not been evaluated in that programme.
Put it into practice
Build a checklist covering intended use, population, comparator, outcomes and validation. Explain why evidence for the imaging system cannot establish the chatbot’s clinical performance. Do not diagnose or recommend treatment.
Clinician prompt
One diagnosis, explained to three people
The same explanation in four registers, plus a list of what each one quietly dropped.
Help me practise explaining the same thing to very different people. This is a fictional teaching exercise. The condition: [NAME A CONDITION YOU EXPLAIN OFTEN] What I usually say: [PASTE YOUR USUAL EXPLANATION, OR WRITE IT OUT NOW] Rewrite it four times: 1. For the patient, who left school after class 8 and is frightened. 2. For their daughter, who is a software engineer and has already read three websites tonight. 3. For a first-year nursing student who has to act on it at 3am. 4. For a colleague in another specialty, in under forty words. For each version: keep every clinically important fact identical, and afterwards list what you simplified and what you deliberately left out. Then tell me which of the four is most likely to be misunderstood, and the exact sentence that would cause it. End with a short section titled "Your check" listing what I must verify myself before using any of this.
Synthetic practice example. Run it as-is and check the output against the supplied facts.
Your check
Read the "what I left out" list carefully — that is where the risk is. You decide what may be simplified; the model does not.
Fictional and general material only. Do not include details that identify a patient.
Sources inform this fieldnote; their publishers do not endorse GreyBrain. This exercise does not confer clinical competence or a certificate.