Recently, I was working on an introductory presentation about Kanban. A “thorough” Google search revealed how drawn out and convoluted many Kanban explanations can be. Was there one true answer I was missing? Something nice and succinct like, say, a tweet on twitter?
Acting on this and laziness, I decided to pose the following question to twitter:
I was so surprised by the number of great responses that I’ve decided to compile and share them with you here:
giff24:#kanban 130 chrctrs? PLS!!! I dnt hve time or patience 2 rd that much
erwilleke:#kanban combines systems thinking with a work-limited pull system to allow rapid maturation of teams and delivery of software.
davenicolette:#kanban “What 100-130 characters would you use to describe Kanban?” I’d use the cast of _Who Framed Roger Rabbit?_
knoxgourmet: Kanban is Scrum without the mess, no sprint planning, no midrange planning, no MSG headache.
kjscotland: Map the value stream, visualize, limit WIP & establish cadence. Reduce WIP to improve flow of value and individual fulfillment
agilemanager: #kanban visualize flow & limit WIP to encourage evolutionary change towards a lean outcome & high maturity culture
Sprezzatura: First establish your value stream. Next limit your work in progress. Then visualize & learn from your workflow. #kanban
most_alive: . #kanban: value flows, post-its move, step,step,step, workers unite
neontapir: Kanban uses visual signals to track and optimize work delivery through key stages in its lifecycle.
I like the commonalities around value, visualization, limited WIP, pull systems, cadence, and flow. This tells me that Kanban is speaking a common and useful language to a lot of us. And, its value can be articulated in a tweet.
But my quest goes on!
I encourage you to add to this list by submitting your own 130 character Kanban definition either as a comment to this post or as a tweet to me (@jeantabaka and use #kanban in your answer.)
In April, I’m attending the Lean SSC conference in Atlanta. There will be a lot of discussion about Kanban. I’ll personally carry all comments and tweets to the conference for inclusion in the discussion. If you’re able to attend, let’s stretch the envelope and go beyond 130 characters on Kanban.
I have been told repeatedly that my brain thinks in pictures, and as a result I have to work hard to communicate my logic effectively in words. Recently in my argument against an Agile Process Maturity Model, I made a comment that Agile is an instance of Lean.
One of the replies on the Agile Alliance Group of Linked-Incountered that my statement isn’t accurate – and in fact a team being both “Agile and Lean” is an oxymoron. So, I looked in the mirror and said this must not be clear. I need to communicate better in both words and pictures.
“The term Oxymoron originates from the Greekoxy (”sharp” or “pointed”) and moros (”dull”). Thus the word oxymoron is itself an oxymoron.” Wikipedia’s Etymology for Oxymoron
Instead of trying to figure out which is sharp and which is dull, I thought I would present my mental model on the evolving Agile software development ecosystem.
Agile as an umbrella term
First and foremost, Agile as an umbrella term was hatched in 2001 to represent a “way” of developing software that is focused on rapid value delivery, collaboration with a customer, face-to-face communication and measuring progress in working code. It casts a wide net of iterative and incremental process frameworks including RAD, Spiral, Extreme Programming (XP), Scrum, DSDM, Feature-Driven Development (FDD), Lean Software Development, OpenUP and Kanban. These methods stand in contrast to highly structured methods that tend to measure success based on meeting plans and following the process.
My rendition of the geneology of Software Development Approaches
Agile has evolved both bottom-up and top-down based on the evolution in technology infrastructure, tools and guiding ideas of our industry. It is symbolized by increased productivity, speed to market, response to change and craftsmanship.
I believe it is not a fad, but a natural by-product of the increasing scientific as well as craftsmanship approach brought to this critical industry.
Lean merges with capital-A Agile
I see the pictured genealogy tree merging Lean software development methods together with capital-A Agile methods. This is because the physics behind Lean design and production are the same physics that make Agile deliver impacts like we see in the Agile Impact Report from QSMA – 50% faster time-to-market and 25% increased productivity.
Small batch sizes, short cycles that create rhythm
Reduction in queues through pull
Reduction in work in process inventory
Design quality in
Stop-the-line defect control
Value streams the link to the customer
Integrated learning through reflection
Last responsible moment decision making
These patterns are the same for an effective Lean effort or an effective Agile effort. This thinking has me advocating that Agile is an instance of Lean, not just a ground-up new tree that was born solely from the roots of OO, Spiral and RAD. I am having a hard time seeing the black and white separation between agile and lean. This is all grey, maybe I should say blue and red based on the diagram, to me.
What do you believe – is Agile is an instance of Lean, or together are they are an oxymoron?
Kanban is great. I value that it seeks immediate fixing of problems, which is referred to as continuous improvement. I love that.
I value that teams are prepared to “Stop the line” and not allow process or defects to continue unscathed. I love that too.
I wonder what Ferris would say about "Fixes that Fail"
But for all that, I haven’t seen clear Kanban practices for long-term trending that would help us identify or capture those “Fixes that Fail” or “Unintended Consequences.”
I am concerned that the emphasis on immediate improvements may fail to capture what long-term negative impacts may be lurking. I worry about a “not seeing the forest for the trees” effect.
So what does my concern about Kanban have to do with Ferris Bueller?
It is admittedly an odd connection. Specifically, it refers to a classic line in the movie “Ferris Bueller’s Day Off.” Ben Stein, Ferris’s history teacher, asks the class, “Smoot-Hawley Tariff Act: raised or lowered tariffs– anyone? anyone?” trying to get at least one student to respond. Classic line from a classic movie, though most people believe that the line was about a fictitious act.
Smoot-Hawley, unbeknownst to Ferris Bueller and most of us, in fact RAISED tariffs in an effort to protect the US economy from an influx of foreign goods during a challenging national economic downturn.
At the time, the “immediate fix” of the Smoot-Hawley Act seemed like a good one. Ultimately, however, the pundits of the time declared that it wasn’t enough to save the country from the economic ravage we now know as the Great Depression.
Today, economists are reconsidering the supposed low or non-correlation of the Smoot-Hawley Act and the Great Depression. Did that immediate fix actually have a lot more to do with the Great Depression than had been understood? Hmmm. Something to reflect on for future possible fixes. The debate is absolutely there. An immediate fix (like Kanban fixes or Smoot-Hawley fixes) may be one of the “Fixes that Fail” or have “Unintended Consequences” that can only be seen through a longer view lens.
The value of this long-term reflection, whether in Kanban or in economic fixes, on such a small fix can have far-reaching impacts on our overall systems.
As Stein points out in his article, economics is not physics. For my part, our analogous comparison is that software development is not manufacturing. We need to walk the walk of systems thinking by being ever vigilant to seeing the entire system, the whole. And that means acknowledging that we will absolutely have delayed feedback loops on our fixes. Longer term reflection and retrospectives can help us make more informed “immediate” fixes as we move through ever challenging world of software development and delivery.
Jean and I made a commitment this quarter to go deep on Lean software development. We have been working with Lean and Agile for years, and really want to engage you in a dialogue to help explore the topic of how they relate.
Jared from Subway on his exploration of a different type of "lean"
To help focus our research, tell us, what are your favorite resources for Lean and Agile?
I don’t want to bias your feedback too much, so here are a few of our current favorite resources as a jumping off point:
Lean.org – Jim Womack’s site about Lean across industries
RallyDev.com
