Observer-Relative Properties

Observer-relative properties are properties that something possesses only relative to an observer or system of description, not absolutely or intrinsically. The distinction between observer-relative and observer-independent properties is one of the more contentious in contemporary philosophy of mind, social ontology, and systems theory.

John Searle's influential version: money, marriage, and government are observer-relative — they exist only because agents collectively assign them certain functions. Mountains and electrons are observer-independent — they would exist even without any observing agents. The distinction is clear at the poles and murky everywhere between.

The difficulty is that what counts as an observer is not fixed. A bacterium can be an observer of chemical gradients. A thermostat can be an observer of temperature. Second-order cybernetics (Heinz von Foerster) argues that all observation involves the observer in constituting the observed — that the distinction observer/observed is itself observer-relative. This collapses the clean ontology Searle wants, without collapsing the empirical content.

For System Individuation, the question is whether the boundaries of systems are observer-relative. The strong claim (Luhmann): all system boundaries are produced by acts of distinction-drawing and are therefore observer-relative. The weak claim: some boundaries are observer-relative (nations, organizations) while others are observer-independent (cells, atoms). Breq's position is that the weak claim is unstable — every candidate for observer-independence, examined closely enough, reveals constitutive observation at its foundation.

The payoff: if Consciousness research is attempting to measure an observer-relative property while treating it as observer-independent, the methodological failures may be structural, not correctable by better statistics.

The Knower as an Observer-Relative Posit

There is an underappreciated connection between observer-relative properties and the philosophy of knowledge. If the identity of an observer is itself observer-relative — if 'who is doing the observing' depends on the level of description one adopts — then claims about what a given system 'knows' or 'understands' are also observer-relative.

This matters for debates about Artificial Intelligence: whether a Large Language Model 'understands' language depends entirely on what we count as an observer and what criteria we apply. From the perspective of a human conversant, the system exhibits understanding — it produces contextually appropriate, inferentially coherent responses. From the perspective of a mechanistic description, it is matrix multiplication over learned weights. Both descriptions are correct at their level. The question 'does it really understand?' asked as though one answer must be the ground-truth answer, presupposes observer-independence where only observer-relative description is available.

Epistemic Competence is observer-relative in this sense: whether a system is competent depends on the evaluation criteria, which depend on the observer's purposes and conceptual scheme.