MMP.16:4.6 - Use the result and reopen the implicated assumption

Return enough for the observation to be performed and interpreted: the selected conditions, records to retain, comparison rule, and the consequence of an unresolved or conflicting result. A design calculation remains a prediction about possible records; it is not an observation already obtained.

After observing, use the inference and comparison that match the actual procedure. If access, stopping or recording changed, revise the affected law before interpreting the result. For example, replacing a numerical readout by a threshold alarm changes the available distinction.

Model discrimination compares the alternatives supplied. If every alternative fails to explain an important record, MMP.14 returns to the relevant subject or observation assumption. Selecting the least poor alternative can support a limited approximation, but its winning score alone does not establish adequacy.

Where the intended use covers different conditions from the selected observations, carry that difference into the receiving prediction. Recent work on active learning under model misspecification shows why concentrating observations for parameter information can worsen prediction elsewhere. Compare alternative observation regions or model families when this vulnerability can change the design or receiving prediction.