PSD.15:2 - Problem
Professional repertoires tend to harden around what their practitioners can already teach, facilitate or compute. New situations are then forced into the incumbent’s assumptions: unclear values become invented weights, unequal participation becomes apparent agreement, and a dynamic uncertainty problem becomes one fixed scenario.
The opposite failure is uncontrolled combination. Each engagement adds another technique or software assistant, but nobody identifies the reusable action, the meaning of the joins, the evidence that transfers or the conditions that defeat it. The resulting collection is larger without being more useful.
Published applications and local successes can compound the problem. A reported use is evidence of that use, not proof of general superiority. A new edition may improve a description without changing a Method. A promising variant may deserve a trial without inheriting its parent’s fit. The practitioner needs a repertoire-development decision that preserves these differences and still supports action.