Structural Cosmology III: Observational Predictions from the Impossibility of Nothingness

This paper completes the Structural Cosmology program by deriving concrete observational predictions from the principle that absolute nothingness is impossible. Using the structural floor σ_min as a dynamical constraint, the model predicts: (1) low-ℓ suppression in the CMB from pre-bounce homogenization, (2) a smooth drift in the dark-energy equation of state w(z), and (3) an ultra–low-frequency gravitational background from pre-bounce contraction. These observational traces allow the impossibility of nothingness to be tested directly against cosmological data, making Structural Cosmology a fully predictive framework.