2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/167066The nature and scope of various impossibility proofs as they relate to real-world situations are discussed. In particular, it is shown in words without technical symbols how secure quantum bit commitment protocols may be obtained with testing that exploits the multiple possibilities of cheating entanglement formation.11 pages, 1 figureQuantum Physicstext