BIG FLARE-UP THEORY

The real gravitational constant is 6.674 x 10^-11 N m^2 kg^-2, which would produce no visible motion at pixel scale. G = 0.12 is a dimensionless clustering coefficient calibrated so that gravitational sorting - not random drift - is the dominant mechanism organising the field. It is fixed, not a user variable, because the physics of attraction is not a preference.

Real nuclear ignition requires ~10^7 K and ~10^5 kg/m^3. Here density is a dimensionless local crowding score. Threshold 4.2 means a particle needs roughly 4-5 close neighbours with significant combined mass before ignition fires - analogous to a molecular cloud reaching Jeans instability. Fixed because the ignition condition is a property of matter, not observer choice.

Observations show ordinary matter is ~5% of the universe's energy-matter content. In BFUT this is not a coincidence but the equilibrium state of a universe where matter arises continuously from quantum fluctuations but is continuously consumed by fusion, collapse, and gravitational vortex formation. The particle count is fixed at 80 - the value calibrated so matter occupies approximately 5% of the observable volume at steady state. This is not adjustable because changing it would break the equilibrium that the 5% rule represents. New sparticles enter from the field boundary at a slow quantum fluctuation rate (0.8% chance per frame), replacing matter lost to mergers and collapses.

BFUT proposes 2.725 K is the dynamic thermal equilibrium of an infinite universe in continuous fusion activity - not a relic from a single epoch. The simulation implements this: each Flare-Up adds heat proportional to headroom below a 3.5 K soft ceiling; the field then cools exponentially back toward 2.725 K with a half-life of ~3 real seconds. The ceiling prevents cumulative drift. The equilibrium is emergent, not imposed.

In BFUT, sorting is not a galaxy-only phenomenon. It operates at every scale: sparticles sort into gas clouds, gas clouds into protostars and star systems, star systems into galaxies, galaxies relative to each other. The simulation represents this with a single N-body engine - the same gravity law producing the same sorting dynamics regardless of which stage a particle is at. The particle stages (sparticle, gas cloud, protostar, star, remnant) are classification labels, not separate mechanics.

The canvas is an observable volume, not the universe. When a particle exits an edge it is released into the implied infinite field beyond. New sparticles enter from edges at the quantum fluctuation rate (A3). This models BFUT's core premise: the observable volume is a sample of an infinite eternal field - there is no wall, no mirror, and no recycling. The Flux In/Out counter tracks the exchange. This is the direct simulation counterpart to Prediction 1 in the BFUT paper.