For forty years, An Introduction to General Systems Thinking has been hailed as an innovative introduction to systems theory, with applications in software development and testing, medicine, engineering, social sciences, architecture, and beyond. Used in university courses and professional seminars all over the world, the text has proved its ability to open minds and sharpen thinking. Originally published in 1975 and reprinted dozens of times, the book uses clear writing to explore new approaches to projects, products, organizations, and virtually any kind of system.

Scientists, engineers, organization leaders, managers, doctors, students, and thinkers of all disciplines can use this book to dispel the mental fog that clouds problem-solving. As author Gerald M. Weinberg writes, "I haven't changed my conviction that most people don't think nearly as well as they could had they been taught some principles of thinking."

With more than 50 helpful illustrations and 80 examples from two dozen fields, and an appendix on a mathematical notation used in problem-solving, An Introduction to General Systems Thinking may be your most powerful tool in working with problems, systems, and solutions."

John D. Richards wrote, ". . . one of the classics of systems or science of computing. I recommend it to all; it will cause both scientists and non-scientists to examine their world and their thinking. This book will appear on my reading table at regular intervals, and one day I hope to update to the golden anniversary edition." He continues, "I've found myself returning to An Introduction to General Systems Thinking again and again in the twenty-plus years since I first stumbled across it. I know no better spark to revive a mind that's stuck in dead-end thinking than to open this book, dive into one of Gerald Weinberg's wonderful open-ended questions, and rediscover how one looks at the world."

In sum, another reviewer called this book, "a quiet little masterpiece showing all of us how we can deal with the big, bad world in a friendly, humourous, courageous, and empowered way."

Passive Regulation is Volume 2 in the General Systems Thinking series that begins with the world-wide best-selling, An Introduction to General Systems Thinking. (also available in ebook formats) That first series volume focused on the question,"Why do we see what we see?" This second books tackles the next question, namely "Why do things stay the same?"

Most people take for granted the stability they see in the world, but for systems thinkers, stability is one of the most fundamental properties, and puzzles, about the systems they struggle to understand and create. Indeed, it's such a fundamental property that it forms the topic of both this volume and its successor, Active Regulation (Volume 3 in the series). 

Originally part of the book, On the Design of Stable Systems, in its first, hardcover incarnation, Passive Regulationdoes not just focus on computer systems, but systems of all kinds—human, natural, and technological. 

In a highly readable, original presentation the Weinbergs here explore the subtle art and science of regulating systems, projects, and people in the most efficient and logical manner possible. The authors draw on their respective backgrounds in technology and social science to offer fresh insights and translate them into a language that anyone can understand.

In the course of this presentation, and with the help of dozens of figures, the Weinbergs introduce a host of laws and theorems derived from the best thinking of systems thinkers over the past century. For the most part, the regulation schemes examined in this volume are based on redundancy—the simplest, yet in many ways the most subtle, of all regulation strategies.

Chapters include:

• The Problem of Persistence

• Aggregates

• Birth-Free Aggregates

• Reasoning About Aggregates

• Modeling Differentiated Aggregates

• Programs for Models of Differentiated Aggregates

• Structure and Behavior of Aggregates

• The Structure-Regulation Law

The book also contains an extensive bibliography and an appendix explaining some useful mathematical notation.

In addition to being a reference book for professional and lay people alike, Passive Regulation is suitable as an undergraduate text in the humanities, social, natural, and engineering sciences. It is unique in its approach, highly readable, and offers practical ways of solving problems.

Active Regulation is Volume 3 in the General Systems Thinking series that begins with the world-wide best-selling, An Introduction to General Systems Thinking. (also available in ebook formats) That first series volume focused on the question,"Why do we see what we see?" The second and third books tackle the next question, namely "Why do things stay the same?"

Most people take for granted the stability they see in the world, but for systems thinkers, stability is one of the most fundamental properties, and puzzles, about the systems they struggle to understand and create. Indeed, it's such a fundamental property that it forms the topic of both this volume and its predecessor, Passive Regulation (Volume 2 in the series). 

Originally part of the book, On the Design of Stable Systems, in its first, hardcover incarnation, Active Regulationdoes not just focus on computer systems, but systems of all kinds—human, natural, and technological. 

In a highly readable, original presentation the Weinbergs here explore the subtle art and science of regulating systems, projects, and people in the most efficient and logical manner possible. The authors draw on their respective backgrounds in technology and social science to offer fresh insights and translate them into a language that anyone can understand.

In the course of this presentation, and with the help of dozens of figures, the Weinbergs introduce a host of laws and theorems derived from the best thinking of systems thinkers over the past century. For the most part, the regulation schemes examined in this volume are based on error-controlled regulation—in many ways the most effective of all regulation strategies.

Chapters include:

• The Search for Regulation

• The Homeostatic Heuristics

• Other Regulatory Heuristics

• Types of Regulatory Mechanisms

• Regulation and Environment

• When the Model Fails

• Making Regulation Mysterious

• Overly Simple Views of Regulation

• Blindness and Reversed Vision

The book also contains an extensive bibliography and an appendix explaining some useful mathematical notation.

In addition to being a reference book for professional and lay people alike, Active Regulation is suitable as an undergraduate text in the humanities, social, natural, and engineering sciences. It is unique in its approach, highly readable, and offers practical ways of solving problems.

Systems analysis and design have solved many problems, but they have also created many problems. This unique book tackles crucial analysis and design issues that are glossed over in conventional texts. It recognizes that while many problems are solved with systems analysis and design, many problems are also created.

Using a short, highly readable essay format, Rethinking Systems Analysis & Design presents readers with both the logical and the more intuitive aspects of the analysis/design process. The book is intended as an alternative for those who must deal with the less structured processes of analysis and design.

A witty and illustrative fable concludes each of this engaging book's seven parts. Among the informative topics are

- mastering complexity

- general systems thinking

- observing and interviewing

- trading off quality versus cost

- understanding the designer's mind

- design philosophy.

Computerworld said, "This isn't just another systems analysis and design book, but one about the problems and possible solutions encountered when implementing a structured approach."

Managing End-User Computing said: "Almost everything in this book translates directly into your own environment. . . . [You'll] find more wonderful stories, anecdotes, and fables in this book than you're likely to find even in a book on a more interesting subject than systems analysis!"

The International Journal of General Systems wrote: "For many years, Gerald Weinberg has been enlivening the often solemn scene of design methodology with his distillations of experience into expertise. His collections of essays, anecdotes, and consolidated wisdom are always inspiring and entertaining: his new work in this tradition will be good reading not only for designers but for anyone wanting to understand design, particularly the users and managers of information systems. . . . Until we do have the Grand Unified Theory of Design (if this is even possible), life lessons such as those in this book will continue to be the most useful guide there is, both for introducing prospective practitioners and for reminding the old hands of what they may occasionally forget."

Libby Myers and the Residue Class are an international bunch of mathematicians famous for their crime-solving prowess. They work by analyzing the patterns underlying a crime, but now they are faced with a killer who brags that there is no pattern to his/her murders.

The brazen murder of the Chinese UN Ambassador brings the case to a boil. Some mathematical aspects of the case cause the US President to call upon the team to tackle the case, in competition with New York's Finest.

The Random Killer not only baffles their brains, but also mocks the entire Residue Class, including even their German Shepherd dog, Heathcliff. As the tally of random murders mounts, the reputation of the Residue Class plummets.

When none of their methods produce results, they begin to doubt themselves. Can true randomness really exist? Can it even foil the brightest mathematicians in the world?