A state of quietness Tea is said to be the way. This is because it is something one learns to appreciate through feeling, not through verbal instructions. If a person maintains a state of quietness, only then will one appreciate the quietness inherent in tea. Lu Yu, The Book of Tea silenceunderstanding
Deciding what to design We Don’t Really Know the Goal When We Start The most serious model shortcoming is that the designer often has a vague, incompletely specified goal, or primary objective. In such cases, the hardest part of design is deciding what to design. I came to realize that the most useful service I was performing for my client was helping him decide what he really wanted. Today, we recognize that rapid prototyping is an essential tool for formulating precise requirements. Not only is the design process iterative; the design-goal-setting process is itself iterative. Knowing complete product requirements up front is a quite rare exception, not the norm. Therefore, goal iteration must be considered an inherent part of the design process. Frederick P. Brooks, Jr., What's Wrong With This Model? What's wrong with the rational model iteration