One Pattern at a Time
Original term: One Pattern at a Time | Chapter/location: 20 | Chapter start page in the English edition’s table of contents: 385
Definition and core idea
The principle of concentrating on one problem or pattern at each step of design, while keeping its relation to the whole and the order of dependence among patterns.
Explanation and elaboration
Instead of solving all problems at once in a final picture, the designer examines one important pattern and then moves to the next. This can reduce cognitive complexity, provided the interaction of patterns and the possibility of revising earlier decisions are not forgotten.
Notes and limits of interpretation
Caution in attribution
The right order does not guarantee that every later decision fits into the existing structure without conflict; implementation needs feedback and review.
Relations to other concepts
Review questions
- What problem does this concept clarify?
- Which part is Alexander’s explicit claim and which part is analytical interpretation?
- What observations or evidence are needed to assess it in a real environment?