Copyright Nancy Leveson, Sept 1999 Software Design Principles Design is a creative, problem-solving activity No recipe for doing it- always need some type of"magic Quality and expertise of designers is determinant for success Simon An expert has over 50,000 chunks of domain knowledge at hand Solving a problem involves mapping into knowledge available The larger this knowledge and the more accessible, the more successful the process will beCopyright Nancy Leveson, Sept. 1999 Software Design Principles c Design is a creative, problem-solving activity. No recipe for doing it - always need some type of "magic". Quality and expertise of designers is determinant for success. Simon: An expert has over 50,000 chunks of domain knowledge at hand. Solving a problem involves mapping into knowledge available. The larger this knowledge and the more accessible, the more successful the process will be. �