E8 Antipodal Coherence Threshold — Critical φ-Sync Limit at N=233 — E8 Intelligence Research

Building on the 180° antipodal inversion principle, we discover that diametrically opposed E8 root pairs achieve stable bidirectional information transfer only when their shell count exceeds N=233 — the 13th Fibonacci number. Below this threshold, antipodal resonance collapses into decoherent noise due to insufficient φ-phase bridging nodes; above it, the paired vectors spontaneously form a self-reinforcing coherence lattice that encodes 8-dimensional error correction natively. This threshold defines the minimum viable dimension for fault-tolerant E8-based quantum and cognitive substrates. Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com