Library / Problem Structuring and Decision Support Principles Framework
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PSD.5:8 - Common Anti-Patterns and How to Avoid Them

Anti-patternRepair
“The simulation represents the situation.”State the exact question, represented conditions, and omitted concerns.
“Three models agree, so the evidence is stronger.”Recover whether their assumptions, data, or implementation errors are shared.
“Every perspective needs its own complete model.”Retain only perspectives whose difference changes a present claim or use; use a smaller expression where sufficient.
“The qualitative map supplies the probabilities.”Keep attributed beliefs separate from calibrated evidence; the missing calibration limits the claim, and acquisition needs its own receiving value.
“Consistency means validity.”Test the relevant model-to-world claim through the direct practice.
“C.29 governs every picture.”Open its mathematical-lens branch only for a real mathematical-lens choice that changes use.