The medieval Islamic scholar Ibn Khaldun noticed something disturbing about bureaucracies: as they grow, they develop what he called 'asabiyya decay' — the gradual erosion of the shared purpose that originally made them coherent. The people who built the system understood what problem it solved. The people who inherit it only understand how it runs. In finance IT, this plays out daily: teams maintain integrations nobody can fully explain, enforce data validation rules whose original failure case no longer exists, and preserve alert thresholds calibrated to a market regime from eight years ago. Ibn Khaldun's insight, sharpened against organizational psychology's concept of 'collective tacit knowledge' — the know-how that lives in human memory rather than documentation — suggests the problem isn't that knowledge decays, but that the decay is invisible until a crisis makes it suddenly legible. The practical move isn't a knowledge audit. It's a different question: not 'do we understand this system?' but 'who is the last person who could explain why this rule exists, and when do they retire?'

Pick one automated rule, threshold, or integration in a system you work with — what is the actual failure scenario it was designed to prevent, and can anyone on your current team name it?

Drawing from Islamic Historical Philosophy / Organizational Theory — Ibn Khaldun (Muqaddimah / Prolegomena, 1377, on 'asabiyya — group cohesion as the generative force behind institutional competence — and its inevitable erosion through bureaucratic success)