The Isotropic Initial State: How Quantum-Geometry Dynamics Dissolves the Foundational Problems of Standard Cosmology

The three foundational problems of standard cosmology — the horizon problem, the flatness problem, and the cosmological constant problem — are standardly treated as independent empirical puzzles each requiring its own solution. This paper argues that they share a single cause: the import of a continuous spatial manifold with a singular initial state. When that foundational assumption is replaced — when space is constituted not by a smooth Riemannian manifold but by a finite discrete preonic structure, as in Quantum-Geometry Dynamics (QGD) — all three problems are dissolved simultaneously, not by separate mechanisms but by the removal of their common cause. The initial state of the QGD universe is a uniform isotropic preonic configuration (S₀): every preon(−) has the same occupation probability, there is no preferred direction, and there is no singularity. This state is not a postulate about a special physical condition; it is the unique state of minimum complexity consistent with the QGD axioms in the absence of any prior asymmetry-generating interaction. The horizon problem cannot arise because the initial preonic isotropy is not a fine-tuned coincidence but the unique axiomatic minimum-complexity state: the concept of causally disconnected regions at different temperatures has no referent when the initial field density is everywhere identical by construction. The flatness problem cannot arise because a uniform isotropic initial preonic state corresponds precisely to flat spatial geometry in the emergent large-scale description — not as a fine-tuned special case but as the direct large-scale image of maximal discrete symmetry. The cosmological constant problem cannot arise in its standard form because there is no continuum of vacuum field modes; the observed accelerated expansion is accounted for by n-gravity — the repulsive interaction between preons(−) at large separations — whose effective cosmological constant is determined by the QGD coupling constants rather than fine-tuned. The inflationary programme is assessed from the foundational perspective: each inflationary mechanism introduces additional non-minimal assumptions not derivable from the framework's own axioms, and the fine-tuning of the inflaton potential is shown to be comparable to the fine-tuning it was introduced to remove. Structure formation in QGD proceeds from discrete preonic fluctuations amplified by p-gravity, producing a near-scale-invariant perturbation spectrum consistent with CMB observations without an inflationary phase. The Hubble tension is identified as a further symptom of the continuum framework: QGD's two-component redshift formula (z_obs = z_D + z_G) naturally accommodates different effective recession rates at different scales, and once the QGD constants are grounded through the empirical programme (P14), the magnitude of the H₀ discrepancy becomes a parameter-free quantitative prediction. Alternative cosmological frameworks — loop quantum cosmology, bouncing cosmologies, causal set theory, string pre-big bang — are assessed comparatively against QGD's foundational dissolution criterion.