Das Buch Clean Code: A Handbook of Agile Software Craftsmanship (Robert C. Martin) hat wieder mal meinen Nerv getroffen. Um Bruce Darnell zu zitieren: "Das ist DER Wahrheit"!!!

...a design is "simple" if it follows these rules:

• Runs all the tests
• Contains no duplication
• Expresses the intent of classes and methods
• Minimizes the number of classes and methods

The rules are given in order of importance.