BFUT Simulation Code Deposit Package v2
Author-facing package for Zenodo/code deposit
Standardized geometry in all simulations:
- Finite spherical universe radius R = 13.8 Gly
- Perfect observational reach D = 13.8 Gly
- Random observer positions sampled uniformly in volume

FILES
1. simulation_A_off_center_isotropy.py
2. simulation_B_overlap_paradox.py
3. simulation_C_matter_map_reprojection.py
4. BFUT_Simulation_Appendix_Brief_Paper_Note.txt
5. BFUT_Simulation_Deposit_Detailed_Methodology.txt
6. README_MASTER.txt (this file)

LOCKED RESULT SUMMARY (for paper alignment)
Simulation A: Off-Centre Boundary-Depth / Isotropy Constraint
- 10% tolerance: allowed volume fraction ≈ 0.010798%
- 5% tolerance: allowed volume fraction ≈ 0.001451%
- 2% tolerance: allowed volume fraction ≈ 0.0000971%
- 1% tolerance: allowed volume fraction ≈ 0.0000123%
Interpretation: near-isotropic boundary-depth geometry requires an extraordinarily tiny privileged central region.

Simulation B: Off-Centre Observation-Overlap Paradox (R = D = 13.8 Gly)
- Mean random observer offset = 10.35 Gly (75% of radius)
- Paradox-zone fraction = essentially 100% of non-central observers
- Mean observed volume outside finite sphere ≈ 53.13%
- Mean finite sphere unobserved ≈ 53.13%
Interpretation: for the statistically typical observer, more than half of what is observed lies outside the finite model, while more than half of the finite model remains unseen.

Simulation C: Structured Matter-Map Reprojection Instability
- Synthetic structured mock cosmic web (cluster nodes + filaments + diffuse background)
- Mean combined similarity ≈ 0.583
- Mean angular similarity ≈ 0.546
- Mean radial similarity ≈ 0.922
- Mean dipole similarity ≈ 0.073
- Strong match fraction (>=0.80) ≈ 2.67%
- Very strong match fraction (>=0.90) ≈ 0.42%
Interpretation: the same finite structured 3D universe does not preserve a stable centered-looking sky under generic observer relocation; only a small privileged central region does.

DISCLOSURE
Simulation C is intentionally a topology-agnostic structured mock universe, not an attempted reconstruction of the real observed sky. Its purpose is to test the geometric and observational stability of any finite structured universe under observer relocation.

DEPOSIT NOTE
These scripts are intended as transparent demonstrators of the geometric logic, not as claims of exhaustive cosmological simulation. The methodology documents are included so that readers understand the assumptions before inspecting code.
