It is not likely there will ever be no drawings but it is an ideal to aim for. Take a metal fabrication for example, the traditional approach to positioning a metal component in the middle of a metal sheet would be a drawing with dimensions that the fabricator would read, then measure out positions on the sheet, mark the location and then position the part. Each step from creating the drawing to positioning the part takes time and has potential for error (I have seen fabricators even mark a line and position the part on the wrong side of it) If the component had tabs that located in slots on the metal sheet then there would be no need for a drawing with dimensions, just a basic work instruction. This won't work every time but it is something to aim for. I appreciate the main point of your quote was more that as engineers our output is information, not parts. I guess my response is really saying, consider including that information in the part.