The argument of the book is grounded in Herbert Simon's ideas about design-oriented professional disciplines. However, Michael Barzelay's argument runs counter to the idea that public management is a design science. It envisions the discipline as a professional practice that requires the thoughtful and skillful use of purposive theories of public organizations, along with reverse-engineered design-precedents, in problem-solving for public programs and organizations. How professional knowledge about public management is to be expanded through research and analytical synthesis is therefore a major thrust of the book's overall argument.

Michael Barzelay develops these arguments in a unique way, including guiding the reader through a fictional ''Public Management Gallery'' featuring key contributions to purposive theorizing about public management as a professional practice. The book is an essential resource for those wishing to strengthen the professional practice of public management - and the discipline - through education and research immediately and for years to come.