Ecological restoration, species distribution modelling, and invasive species management share a difficulty: knowledge that is findable and reusable carries no explicit account of the conditions under which it can be validly applied, or of the evidence grounding them. Applying it correctly is therefore demanding and expert-dependent, and misapplication usually goes unrecorded. The FAIR and CLEAR principles improved the findability, accessibility, interoperability, reusability, and human-interpretability of knowledge, but these address properties of representation, and reliable action requires more. Bridging the knowledge-action gap requires characterizing knowledge in terms of the operations it supports. Analysing what an operation needs, we derive three capabilities a knowledge representation must support. Actionability is the capacity to supply the knowledge and objective an operation executes. Applicability is the capacity to assess whether it can be reliably performed, through explicit conditions evaluated against context. Auditability is the capacity to assess the empirical grounding for that reliability, through documented success and failure. These form the three criteria of the TripleA Principle, an implementation-indipendent guide for next-generation knowledge infrastructures, jointly sufficient for the representational preconditions of reliably grounded action though not for its justification. Building on the Semantic Units Framework, we realize the principle as action units, typed components in which the knowledge an operation executes, the conditions under which it may validly be applied, and its documented successes and failures are addressable and evaluable. Action units form a nested hierarchy in which documented failure refines the conditions of valid use, letting knowledge graphs act as context-sensitive, evidentially accountable decision-support systems.

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