In the late-90s I worked for a manufacturing company in a firmware dev capacity. They did everything on paper still. They migrated successfully to an in-house built ERP system sitting on top of Oracle. Big celebration, everyone happy. Six months later someone drove a forklift through the wall of the machine room into the UPS which caught fire and destroyed three racks of kit including the Oracle node. Turns out no one really trusted the system and was running paper on the side. When I left 6 years later they were still doing it on paper and reporting on Excel. It works and is considerably more forklift proof.