General relativity is non-renormalizable, preventing standard quantum unification.
the verdict
COMMON KNOWLEDGE
no citation needed for this one
refutedsupported
the weight of evidence
no sources on either side
The retrieved documents do not directly address the standard textbook fact that general relativity is non-renormalizable in perturbation theory and that this property poses an obstacle to standard quantum field theoretic unification, but this is widely established foundational physics knowledge.