I wish I could remember where I read it, many, many years ago, but a blog was talking about automating systems in a government entity.

They spent much work customizing a workflow, where all requests would go to Judy, and she would decide who to route it to. They spent weeks trying to map it all out, and the logic used, etc. They eventually found out the reason this was hard-coded into their proceses, was 15 years earlier, in the days of paper based forms, Judy had the first laser printer in the building, and it was cheap to print compared to the other printers. It had nothing to do with her main job. So the printer next to her desk would hum, and then Judy would walk it to the person that needed it. Over the years, this just became accepted, and then later, incorporated into workflows/policies, and became Judy's full time job.