The Dark Sector as a Classification Error

The Dark Sector as a Classification Error

A Boundary Analysis of Dark Matter and Dark Energy

This paper develops a structural analysis of ontological extraction in contemporary cosmology. Rather than proposing a new cosmological model or disputing the empirical success of $\Lambda$CDM, the manuscript examines whether presently inferred dark-sector structure admits invariant primitive ontological extraction under representational redistribution preserving observational witness constraints.

The central result is that dark-sector inference is structurally underdetermined across admissible representational schemes. In particular, explanatory load may be redistributed between:

• source-side augmentation (e.g., additional gravitating sectors),
• law-side modification,
• or alternative representational stabilization structures,

while preserving the relevant observational witness class motivating the inference.

The manuscript introduces a formalized extraction criterion based on invariance under observationally preserving representational transformation. Under this criterion, presently inferred dark-sector structure fails unique primitive ontological stabilization within the surrogate classes analyzed.

A weak-field/Newtonian toy model is developed explicitly demonstrating:

• witness preservation,
• redistribution of explanatory load,
• and failure of invariant primitive extraction across distinct representational constructions.

The paper carefully distinguishes:

• primitive ontology,
• effective/operational utility,
• and predictive adequacy.

The argument does not deny:

• the empirical success of modern cosmology,
• the utility of effective dark-sector modeling,
• or the possibility of future physical discoveries.

Instead, it establishes a boundary condition on when ontological extraction from surrogate-dependent cosmological structure is admissible.

The manuscript is positioned as a foundations-oriented contribution at the intersection of:

• cosmological inference,
• structural realism,
• representational equivalence,
• and ontology in physics.

This paper is downstream of:

1. Minimal Conditions for Admissible Construction

2.  The Structure of Admissibility