Instructional Design

As I'm reading and thinking about what is "Instructional Design" a number of thoughts are coming to my head.
1 - My husband is a civil engineer with specialty in the materials used to build our roads. When he talks about his job, he uses some of the words I continue to read: problem solving, analysis, specifications, and evaluation. I see him using some of the processes of Instructional Design in his line of work.
2 - In the Schiffman article on "Instructional Systems Design, Five Views of the Field," I appreciated this note about ISD: "a blend of psychology, education, communications, management, systems theory, and social science." This fits with the thoughts I had about my husband's work and the use of ID.
3 - The Schiffman artcile also recommended that rather than getting hung up on a specific title for this academic field or using specific terms for exact meanings within the field, one should balance each aspect of Instructional Design within the process.