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Systems generating systems — architectural design theory by Christopher Alexander (1968)

The systems thinking roots from architect Christopher Alexander aren’t completely obvious in his work on pattern language.  A republished version of an 1968 article resurfaces some clarification on a perspective on systems thinking originating from practices in architecture.  This article introduced ways in which systems thinking could be most directly applied to built environments.  The cross-appropriation of pattern languages across a variety of domain types — object-oriented programmers were the earliest motivating adopters — could be enlightened by revisiting the foundations.  Alexander concisely presented 4 points, and then provided detailed reasoning for each:

1. There are two ideas hidden in the word system: the idea of a system as a whole and the idea of a generating system.

2. A system as a whole is not an object but a way of looking at an object. It focuses on some holistic property which can only be understood as a product of interaction among parts.

3. A generating system is not a view of a single thing. It is a kit of parts, with rules  about the way these parts may be combined.

4. Almost every ‘system as a whole’ is generated by a ‘generating system’. If we wish to make things which function as ‘wholes’ we shall have to invent generating systems to create them.  [Alexander 2011, p. 59; Alexander 1968, p. 605]

In a properly functioning building, the building and the people in it together form a whole: a social, human whole.

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The systems thinking roots from architect Christopher Alexander aren’t completely obvious in his work on pattern language.  A republished version of an 1968 article resurfaces some clarification on a perspective on systems thinking originating from practices in architecture.  This article introduced ways in which systems thinking could be most directly applied to built environments.  The cross-appropriation of pattern languages across a variety of domain types — object-oriented programmers were the earliest motivating adopters — could be enlightened by revisiting the foundations.  Alexander concisely presented 4 points, and then provided detailed reasoning for each:

1. There are two ideas hidden in the word system: the idea of a system as a whole and the idea of a generating system.

2. A system as a whole is not an object but a way of looking at an object. It focuses on some holistic property which can only be understood as a product of interaction among parts.

3. A generating system is not a view of a single thing. It is a kit of parts, with rules  about the way these parts may be combined.

4. Almost every ‘system as a whole’ is generated by a ‘generating system’. If we wish to make things which function as ‘wholes’ we shall have to invent generating systems to create them.  [Alexander 2011, p. 59; Alexander 1968, p. 605]

In a properly functioning building, the building and the people in it together form a whole: a social, human whole.

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