An interesting angle on the topic comes from my father who at one time was a project manager and designer in the construction industry. In the days before comp

An interesting angle on the topic comes from my father who at one time was a project manager and designer in the construction industry. In the days before computers he would painstakingly hand-draw the design that was reproduced as blueprints, that was the role of the "draftsman". But the drawing wasn't the source of stress, rather it was the project "specification" that he sweated. The issue was the spec was a legal, text-format document detailing the size of beams, type of wire, plumbing, fixtures, etc. He had to assure that beams were sufficient to support structure, electrical wiring was safe and up to code, etc. A mistake could expose the contractor and himself to legal liability if a component failed, so an accurate spec was a task he took seriously. Of course the subject of program specifications is commonly discussed, though often doesn't have the same significance that my father experienced. I guess in most cases program crashes don't have the same impact that a roof caving in would entail. In situations where crashing can't be tolerated, the spec will mean a whole lot more.