When institutional knowledge walks out the doorThe volume problem in biomedical research has moved past inconvenient and into something more structurally serious. When experienced researchers leave, the scientific reasoning they carried often goes with them. Institutional knowledge transferred slowly, and the habits of scientific judgement passed informally between generations, that system was imperfect, but it functioned. The reasoning is fast, built over years of pattern recognition and hard-won familiarity with how these calls tend to play out. Codifying scientific reasoning also raises a question that tends to get underweighted: how do you know the codification is trustworthy?