“When you say DfX or Design for X, is the ‘X’ intended to be for "’excellence’ or the use of X as a variable as used in an algebraic equation?’” This question was asked of me when explaining what I do. “Well, it is dependent on the person you ask or where you look for the definition. If you use it as a variable it should cover the term ‘excellence' as well as any other term you want to use. Let’s go with ‘X’ as a variable.” was my response.
Regardless of the term you use for ‘X’ there are certain realities that are inescapable. If a system cannot be
