ABSTRACT
A method is likely to be most suitable if it is based on and derived in a systematic way from a well-founded theory (see Figures I.2, 4.7, 7.2, and 7.3). A method needs to be adapted, usually by the user, to the design situation (see Chapter 3). Some initial definitions are
1. Working principles are general guidelines and formalized heuristics for engineering designers, and acceptability of solutions, and so forth, usually without prescribing a procedure.
