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The Principles of Product Development Flow: Second Generation Lean Product Development
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The Principles of Product Development Flow: Second Generation Lean Product Development

4.16  ·  Rating details ·  2,046 ratings  ·  99 reviews
In this book, Reinertsen provides an examination of product development practices. He explains why invisible and unmanaged queues are the underlying root cause of poor product development performance. He shows why these queues form and how they undermine the speed, quality, and efficiency in product development.
Hardcover, 276 pages
Published May 1st 2009 by Celeritas Publishing
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4.16  · 
Rating details
 ·  2,046 ratings  ·  99 reviews

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Rod Hilton
Feb 04, 2010 rated it really liked it
Shelves: programming, business
Don Reinertsen's book is somewhat difficult to review. There are two aspects to a book: the information it contains, and the way in which it is presented, and since my take on these two aspects of so different, I wish to speak about them separately.

In terms of the information contained in the book, it is phenomenal. Reinertsen basically takes the principles of Lean Manufacturing and explains the ways in which they can apply to product development and the ways in which they cannot. For the princi
Erika RS
May 28, 2017 rated it really liked it
Shelves: physical, owned, software
This was sometimes a frustrating read. The author wants this to be a dense reference resource rather than a long explanatory text. This is fine. I can pull out the internet to look up unfamiliar terms. However, I do think that Reinertsen's brevity hurt his core arguments at time. For example, much of the discussion of the impacts of queues depended on details of the M/M/1/∞ queue. The shape of the conclusions apply to other queueing disciplines, but the equations don't apply exactly. It would ha ...more
Michael Fruergaard
Oct 31, 2012 rated it it was ok
I had very high expectations for this book. I've had it recommended by a number of people - and thought I would really benefit from reading it.

It does add value, but Mr. Reinertsen is making some obvious mistakes that makes me doubt the more valuable parts of the book.

The book's format is inspired by the world of physics, and is providing 100+ principles that to some extend build on top of each other. This unfortunately also means that if one is a fallacy, the rest could be impacted.

Mr. Reinerts
Jun 15, 2019 rated it really liked it
Weirdly good. It talks about processes that have existed forever manufacturing that we're only now discovering in Software Development. And it goes *really* in-depth into them, including ideas like queueing theory which was very new to me. It *is* written like a textbook though, which makes some of the information less accessible than it should be.
Bjoern Rochel
Jul 02, 2018 rated it really liked it
Shelves: 2018, eng-mgmt
Marvelous 5 star content obscured by sub-par organization and style choices
Dan Lewis
May 11, 2017 rated it it was amazing
I'm a software developer with ten years of professional experience, lately making manufacturing and R&D product development support software. I have not read about lean manufacturing, but I was exposed to some of its practices indirectly in my work at Amazon.

This book was very practical for me. It honors the existing orthodoxy about kanban, lean manufacturing, and Toyota, while carefully drawing distinctions between repeatable production and innovative product development. So it serves as a
Sep 11, 2015 rated it really liked it
I didn't finish this the first time I read it and gave it two stars. That was unfair.

I gave it a second chance and found it chock full of valuable advice on managing product development. If I had to summarise the book I'd say it's about taking all the complex interdependent components of designing and building things and making them understandable and manageable through the use of economic frameworks.

Just because "Product" is in the title, don't think it's just for product managers, if you're an
Charles Eliot
Jun 10, 2014 rated it really liked it
The Principles of Product Development Flow is an important and thought-provoking book. It's also a frustrating, condescending, and self-important book. Donald Reinertsen has some vital knowledge to pass on. He wants us to know why the rules of product manufacturing don't work for product development. He also wants us to know that he's a very clever man, and you're probably not. But he has a treasure trove of solutions, based on the simple and elegant practices of computing costs of delay, and ta ...more
Roger K.
Nov 01, 2014 rated it it was amazing
I cannot recommend this book highly enough to anyone who works on projects, products, or services. Reinertsen is masterful in building a comprehensive approach to product development from manufacturing, networks, computer operating systems, and the military. His insights overturn conventional thinking and even much of the guidance in Agile/Lean thinking.

The author uses 175 principles to structure the book. He provides clear examples, inspiring charts, and practical advice throughout the book. Yo
Nov 02, 2017 rated it it was amazing
Other reviewers have written great reviews about the power behind this book's premise. This is a fantastic treatise on how product development could (and arguably should) be. I'll simply say that I am happy join in and applaud Reinertsen for exposing many of us who are in the dark to these core concepts that are blindingly obvious in other industries. Reinertsen's 175 principles together are truly more than just the sum of their parts. Really Reinertsen is pointing to a completely different way ...more
Richard Mullahy
Mar 07, 2018 rated it really liked it
The insights contained in this book are revelatory, and should be required reading for anyone involved in leading an R&D organisation. That being said it isn't easy required reading. Reinertsen does attempt, in his principles-led structure, to make this logical and easy to follow. However there is a lot of looping back and forth and internal cross-referencing that can be distracting. This book can probably be boiled down to a smaller number of key principles with less elaboration in the body ...more
Alper Çuğun
Jul 26, 2017 rated it it was amazing
A treat to read this book which is a distillation and a validation of knowledge I picked up from a bunch of other books and during years of painstaking work.

I'm a big proponent of the mathematical treatment of agile product development he outs together here with some dollops of critical chain project management thrown in. Living in Germany it is funny to read so many principles that are in direct opposition to local business practices.

Halfway through it becomes a bit of a slog but I feel I need
Hunter Hart
Mar 04, 2018 rated it really liked it
This is a book of three different ideas speed, quality, cost . Hands down the best book on Product Management I’ve read so far. Donald Reinertsen clearly explains the challenges in developing software products and offers pragmatic solutions to drastically improve time-to-market, economic value & product quality in a refreshingly down-to-earth manner.

The book busts traditional product management myths and introduces well-known concepts from Lean methods.
Jan 20, 2019 rated it really liked it
An excellent book thoroughly explaining the theories behind lean product development. Dense, to the point and well argued. I especially liked the economical arguments the book started with and kept gravitating towards, making this a great book for not just working with lean practices but also business-whispering the benefits of doing so. Slightly dry and required deliberate attention to understand, but I guess that happens when you minimize fluff.
Eric Bowman
Mar 21, 2018 rated it it was amazing
A deep book which exposes the systematic flaws arising from a naive application of agile principles at scale. In particular, though not mentioned, this book provides the foundation for why feature teams and Inner Source are so important for realizing global efficiency in turning ideas into products.
Tom Atwell
Mar 17, 2018 rated it it was amazing  ·  review of another edition
Great book. As a software development manager, it reinforces a lot of the concepts and practices I've adopted over the years using scrum. Yet there are still some surprises and lessons and important changes I discovered that I've already started applying to positive effect.

The most important moment in the book is probably Figure 8.6: Metrics for Flow-based Product Development.
Hugo Corbucci
Jul 03, 2017 rated it really liked it  ·  review of another edition
Really good book but very hard to read. Along with a lot of deep queue theory and serious mathematical theory interpolation, the advice are often very abstract and hard to understand how to put in practice.
Generally the ideas are great and it is worth the effort to read but it is definitively not a light read and requires a lot of work to try to put in practice.
Colin Clark
Jul 28, 2019 rated it it was amazing  ·  review of another edition

Most commonly held beliefs regarding product development are just wrong. In this book, why those beliefs are wrong is described and how to do a much better job is explained, with supporting theory and math.
May 28, 2017 rated it it was amazing  ·  review of another edition

This is a remarkable book that spans numerous disciplines in its mission of applying principles of flow to product dev't. I found many insights in further extending them to knowledge work productivity.
Andy Nortrup
Aug 20, 2018 rated it it was amazing  ·  review of another edition
It you work in software development you need to read this book. It is critical to think not only about your craft of design but the methods we use to endure that what we build is delivered quickly and has the highest value.
Mar 09, 2019 rated it it was amazing
Wonderful book which helped bring home why short horizon, frequent releasing combined with a mix of centralized and decentralized control aids in software/product development.

There is a lot to love about this densely packed book and I plan on applying several of the ideas to upcoming programs.
Edward Dahllöf
Apr 11, 2018 rated it liked it
I liked the mathematical explanations and some of the principles are useful.
The book is condensed in some parts where more examples and explanations would be useful, and repeats itself in other parts.
Ray Angelone
Aug 16, 2017 rated it it was amazing
This book is packed with principles that range from queue theory to batch size management to explain how "flow" works best in product development. It's not a light read, yet worth the effort.
Aug 04, 2017 rated it it was amazing
Fantastic economic and flow descriptions. Get stuff done.
Apr 21, 2018 rated it really liked it
I highlighted a lot. All interesting, if a bit abstract.
May 04, 2019 rated it it was amazing
Brilliant! Must read.
Dec 07, 2017 rated it it was amazing
tranformational book on why Agile works without actually being a book on agile development. Love the principles and the lack of zealotry in the writing.
Maria Cerase
Aug 28, 2018 rated it liked it
Economically sound and brilliant read. Just too presumptuous in tone.
Janne Sinivirta
Jul 18, 2017 rated it it was amazing  ·  review of another edition
Probably the most important book on software development processes ever written. Would have benefited from a better editor and different format but still such a goldmine of important information.
Feb 04, 2018 rated it it was amazing
I do not even know where to begin. Just read it. And when finished, reread it.
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“In product development, our greatest waste is not unproductive engineers, but work products sitting idle in process queues.” 5 likes
“It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so.” 4 likes
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