HCD.20:4.1 - Fix what must survive the comparison
Name the personal contribution, later work, permissible help and critical errors. Identify any separately required shared product or team performance. If the purpose is responding to another person’s reasons, an isolated calculation exercise is not an equivalent comparator. If the purpose is performing a routine calculation reliably, extensive debate may add no required contribution.
Use actual preparation evidence for known people and conditional assumptions for a future audience. Distinguish insufficient subject preparation from unfamiliarity with the interaction. A learner may understand a model but not know how to request clarification or express an evidence-based objection; adding more subject explanation will not directly repair that interaction gap.
Retain a qualified individual or existing supported option as the baseline when it can serve the target. Describe what a group would add: otherwise unavailable evidence, an explanation to a recipient, another interpretation to challenge, a shared instrument, or coordinated action. If no consequential contribution is identifiable, stop with the simpler sufficient option.