RMP.6:10 - Rationale

A credibility test is informative through the relation between its possible result and the claim. That relation explains both why one well-targeted comparison can matter and why a battery of mismatched tests can add little.

Evidence adequacy and acquisition choice are different questions. Preserving both allows a researcher to finish the present allocation honestly while keeping uncertainty visible. Separating prospective decisions from actual results prevents an approved study plan from being mistaken for support.

Protective requirements also make distinct claims about value, causal or measurement effects, practical burden and authority. Examining one does not automatically establish or cancel the others.