PSDA.Reference:6 - Continue and change the practice
A changed source or receiving condition reopens only the dependent claims until evidence warrants a wider revision. Preserve useful earlier results within their actual scope. A professional organization can use PSDA.16, PSDA.17, PSDA.18 for repertoire, simultaneous service work and cultural continuation; an independent intellectual inquiry can use the general Method-development and cultural-reproduction guidance directly. Neither path is a compulsory tail to one calculation.
The useful change in practice is the ability to reconstruct a consequential distinction, obtain the right model or comparison, and tell what conclusion it actually supports. Successful communication, accepted advice and realized outcomes remain separate results. The next inquiry starts from the changed knowledge and its actual question, not from an obligation to repeat every pattern.
A corrected concern, altered access condition or new model configuration can change the current result. Identify the claims that depend on the change and ask the responsible practitioner to reconsider them. Obtain and interpret the relevant observation before choosing a response; the mere arrival of a notice is not evidence that the new configuration is safe or effective.
A different problem concerns how inquiry itself is conducted. Use PSDA.16 when the professional repertoire needs a justified change, PSDA.17 when simultaneous inquiry activities interfere, and PSDA.18 when a practice must be continued or changed across practitioners. These are conditional uses, not a required tail on every recommendation.
Contemporary source comparisons belong with the pattern claims they support. Earlier traditions remain valuable where their limits are understood. Neither a fashionable school nor an old success is enough to establish the present Method’s fit. What changes in practice is the reader’s ability to return a useful answer with visible limits—and to change that answer, or the way of obtaining it, when the actual basis changes.