Quantum code breaking? You'd get further with an 8-bit computer, an abacus, and a dog

The report critiques the push toward Post-Quantum Cryptography (PQC), highlighting Peter Gutmann’s argument that practical quantum cryptanalysis remains far off, with demonstrations factoring only small or specially constructed numbers and no robust evidence of near‑term risk to RSA. It outlines NIST’s rationale and candidate schemes (HQC, CRYSTALS‑Kyber, CRYSTALS‑Dilithium, SPHINCS+, FALCON), contrasts them with skepticism over quantum progress and error rates, and includes D‑Wave’s view that breaking modern encryption is many years away; Gutmann contends the PQC transition adds complexity without addressing current, non‑cryptographic security failures.