summary - Giddings & Mangano’s direct 3-page reply to Plaga, arguing his metastable-black-hole scenario is internally inconsistent: the same properties that would let such an object survive Hawking evaporation (per Plaga’s model) would, GM argue, also put it inside the parameter range their white-dwarf/neutron-star survival bounds already exclude, so there is no self-consistent gap in their original safety case. This reply was itself never submitted to a peer-reviewed journal, unlike the fuller Giddings-Mangano astrophysical paper it defends.
relevance_note - Closes the critic exchange this slice must represent in full; without this node the graph would carry only the critic’s side of the Plaga dispute.