Library / Problem Structuring and Decision Support Principles Framework
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PSD.6:4.3 - Compare the simplest sufficient candidate with a real alternative

Choose the comparison dimensions from the required result. The following questions are often decisive:

  • Does the Method reveal the material interpretations, or does it require agreement that is absent?
  • Can it use the available evidence without manufacturing precision?
  • Can affected participants meaningfully contribute or challenge the result through available channels?
  • Does it produce the kind of result the next inquiry needs?
  • Can the needed expertise, time, and resources be provided?
  • What important limitation or failure would remain?

Compare a single sufficient Method, the plausible incumbent, and a bounded combination only when each is a live alternative. Do not turn every engagement into a survey of all PSM families. State the trade-off if a richer result costs more preparation or excludes a faster route. Method popularity, a successful workshop elsewhere, and participant satisfaction do not establish comparative fit here.

If the necessary premise cannot be tested before the receiving decision, select a qualified provisional use or return the limitation. A declared gap is not a low score to be averaged away.