29th December 2011
I worked for several decades at a large petrochemical company. In the early 1980s, we designed and built a plant that refines some hydrocarbon type stuff into other hydrocarbon type stuff. Over the next thirty years, institutional memory of this plant faded to a dim recollection. Oh, it still operates, and still makes money for the firm. Day to day maintenance is performed, and the skilled local crew is familiar with the controls, valves, safety systems, and other such.
But the company has forgotten how it really works.