This working paper presents a This working paper presents a new cosmological origin model designated The Big Inflation, distinct from both the Standard Big Bang model and current inflationary cosmology. The model proposes that the universe originated not from a singularity but from the initiating motion of the Pizza Constant(PC) spiral wave propagating simultaneously at the speed of light (c) and near-zero velocity. This dual-speed spiral motion, governed by whole-integer frequency thresholds derived from the Potential Gravitational Pressure Wave (PGPW) framework, produced exponential cascade events at each octave boundary. These cascades generated the fundamental epochs of cosmological structure-radiation, baryonic matter, dark matter filaments, and large-scale cosmic web architecture-as direct mathematical consequences of PC ribbon geometry. The model dissolves the singularity problem, provides a wave-native explanation 1 Working Paper-Priority Documentation Kunferman-The Big Inflation for dark matter filament structure, and unifies sound and light as the same wave phenomenon differentiated only by propagation speed regime. distinct from both the Standard Big Bang model and current inflationary cosmology. The model proposes that the universe originated not from a singularity but from the initiating motion of the Pizza Constanr(PC) spiral wave propagating simultaneously at the speed of light (c) and near-zero velocity. This dual-speed spiral motion, governed by whole-integer frequency thresholds derived from the Potential Gravitational Pressure Wave (PGPW) framework, produced exponential cascade events at each octave boundary. These cascades generated the fundamental epochs of cosmological structure-radiation, baryonic matter, dark matter filaments, and large-scale cosmic web architecture-as direct mathematical consequences of PC ribbon geometry. The model dissolves the singularity problem, provides a wave-native explanation 1 Working Paper-Priority Documentation Kunferman-The Big Inflation for dark matter filament structure, and unifies sound and light as the same wave phenomenon differentiated only by propagation speed regime.