My 20-Year Experience of Software Development Methodologies
I’m surprised that Don Reinertsen’s book The Principles of Product Development Flow doesn’t come up in these discussions. Rich Hickey mentioned it once after a conference years ago and that’s the only time I’ve heard it mentioned. I’ve since found a few blog posts responding to conference talks (of which there are several on YouTube from around 2015), but not many. I think people simply don’t know about it. I wrote it down at the time and finally digested it over the past several months. It’s an incredible book that I think would resonate with many of the commenters here.I think of Reinertsen’s approach as industrial agile, in the most honorable sense of industrial. There is theory and some math. There is heavy emphasis on project economics as a means of making complex trade-offs and a basis for training, deputizing, and expecting employees at all levels of an organization to make better decisions on the fly as part of doing their jobs. Lessons are drawn from many fields, such as network communications, queueing theory, and the Marines. Contrasts are drawn with manufacturing to explain exactly why some of the techniques we adopt do not apply in product development but where many techniques from kanban systems do apply.The book is organized around hundreds of principles given as tools, to be considered and applied as needed to your specific situation. Annoyingly, he refuses to get into implementation. At first I thought he was saving pages, but the more I think about I realize the seeming omission was necessary genius. Digging into even one example implementation would result in the death of the message and framework as people copied that and get dogmatic about a methodology all over again.The whole presentation is beautifully constructed and tight. It puts a perspective and language on things in a way that makes me hopeful and interested in project management, similar to how Rich Hickey’s talks raise my understanding, vocabulary, and aspirations for software engineering.I would welcome anyone involved in prioritizing commercial software projects to read and discuss this book (and document their implementations).