Library / Problem Structuring and Decision Support Principles Framework
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Source changed 2026-10-03 11:52:20 UTC · snapshot created 2026-10-03 11:53:41 UTC · last check 2026-10-03 14:15:10 UTC

PSD.3:5 - Archetypal Grounding

PSD.3:5.1 - Four formulations of the flood-pump situation

For the board’s pre-season decision, the PSD.2 account supports four material formulations:

  1. Capacity shortage: peak inflow can exceed available pumping capacity; flow, reliability, and deployment evidence matter; permanent or mobile capacity becomes salient.
  2. Unequal protection: current arrangements shift flood exposure toward particular districts and mobility-constrained residents; distribution, access, and representation evidence matter; allocation and protection rules become salient.
  3. Maintenance fragility: failures arise from maintenance, spares, staffing, and coordination dependencies rather than nominal pump count; readiness, contracting, and staged maintenance alternatives become salient.
  4. Unsafe deployment: emergency placement and operation can create worker, resident, traffic, or downstream risks; safe operating envelopes and restraint branches become salient.

These are not synonyms. They imply different scope, evidence, model, alternative, and value work. The team keeps overlaps and conflicts visible and sends the set to PSD.4; it does not vote for “the real problem” or infer that any intervention is effective.

PSD.3:5.2 - Development-direction advice

For an AI-assisted incident-response arrangement, “model accuracy is inadequate”, “operator coordination is fragile”, and “authority escalation is unclear” imply different holders, evidence, intervention families, and safety questions. PSD.3 retains all three only if each can change the two-quarter development recommendation. Generic slogans such as “improve AI capability” and “make the system better” fail the material-difference test.

PSD.3:5.3 - Cheap non-use

A repair team has a verified broken seal, one affected assembly, one authorized repair decision, and no rival account that changes evidence or action. The live question is which qualified replacement to use. Generating plural problem formulations would add ceremony; proceed directly to comparison or choice.