Systems Thinking, Systems Practice, Peter Checkland

Systems Thinking, Systems Practice: Includes a 30 Year Retrospective

This book contains a good description of Human Activity Systems (HAS) that uses a root definition to describe a human activity system (CATWOE). The concept of the Root Definition has been extended to the System Description that is produced using the System Architecture Framework.

The book also contains a simple system classification scheme that is being used to define a Earth (Gaia) as a System of Systems model. The system classification system is described in the book from page 102 to page 122. Figure 4, page 112 highlights the 5 system classes. This book also has a good glossary of terms.

This book relates to the following System Concepts.