Gordon Glegg wrote The Design of Design (long before the Brooks book of that title) — it’s one of those foundational (1969) classics with chapters on: 1. The design of the problem; 2. The design of the designer; 3. The design of design: the inventive; 4. The design of design: the artistic; 5. The design of design: the rational; 6. Safety margins.
(I think it was @glv who introduced it to us on twitter, years ago.)



