This is PSTJ Volume 11 Issue 4 first published in July 2020. It is entitled "Bimetric Convergence, Mandelbrot Butterfly, & Quantum Coherence" and contains the following articles: (1) Bimetric Convergence; (2) Mandelbrot Butterfly Identification - Classifying Misiurewicz Points of the Second Type; (3) Complex Dynamics as Foundation of Relativistic Spacetime; (4) Emergence of Lie Groups & Gauge Symmetries from Complex Dynamics; (5) Stability of the...