Editing Openai/692699c6-c558-8008-85d8-6b5ef2f464c9 (section)

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Some proponents point to possible discrete spacetime as evidence of “pixels” in the simulation. But current data from high-energy gamma ray observations and LHC experiments show no such lattice.
* Reference: Amelino-Camelia, G. “Quantum Gravity Phenomenology.” Living Reviews in Relativity (2013).
* Reference: Abdo et al., Nature 462 (2009) — Fermi telescope limits on spacetime granularity.

===== Several papers have tested for lattice signatures in the CMB; none were found. =====
* Reference: A. Kosowsky, “Cosmic Microwave Background,” Annals of Physics (2006).
* Reference: Hackermüller et al. (2014) — constraints on anisotropies expected in lattice universes.

===== If reality were rendered on demand (like video-game rendering), energy conservation might glitch. No such anomalies are observed. =====
* Reference: Carroll, S. The Big Picture (2016).