Tacit Knowledge Exceeds Linguistic Expression

Why this is an axiom: This philosophical commitment from Michael Polanyi establishes an irreducible limitation on the linguistically expressible. It's not merely that articulation is difficult or time-consuming—rather, certain knowledge is constitutively non-propositional, residing in skilled performance, perceptual discrimination, and embodied understanding that cannot be fully captured in explicit rules.

Philosophical reasoning: Polanyi observed that we recognize faces, ride bicycles, and make skilled judgments through integrating countless subsidiary cues that we cannot enumerate. Attempts to explicitly state all relevant factors either fail to capture the essence of the skill or produce unworkably complex rule sets. This suggests knowledge has irreducibly tacit dimensions: we know by indwelling in practices, by attuning to patterns we cannot decompose. The relationship between tacit knowing and focal awareness parallels the distinction between subsidiary and focal consciousness.

Curriculum connection: This axiom grounds discussions of apprenticeship, learning-by-doing, and the limits of formal instruction. It explains why some skills require imitation and practice rather than just reading descriptions, why expert knowledge often seems ineffable, and why AI systems trained on explicit rules struggle with human-level judgment. It motivates respect for experiential learning and recognition that not all important knowledge can be formalized in curricula.