This page demonstrates a key Lean concept: Mura, or variation. The simulator is based on a game described in Goldratt's The Goal (which is well worth reading). Click the help button to the right of the spinner to get an explanation of how the simulation works.

9 Comments

  1. Bernie Clark on April 11, 2017 at 11:56 pm

    Very nice, Allen. You always do good work. The Goal is an excellent book and this illustrates your point about work station averages nicely.
    I am not convinced that you can say this represents 5 back to back sprints, though. Subsequent sprint velocity is not constrained by prior sprint performance since stories are not passed ‘down the line’ as in a production process.

    I wonder if you will be doing a bottleneck simulator to demonstrate the effectiveness of WIP limits?

    • Emberlynn on June 26, 2017 at 12:26 am

      Taking the oveeivrw, this post is first class

    • admin on September 2, 2017 at 3:45 pm

      Bernie — The sprint issue depends on whether or not the stories are dependent (i.e. you can’t release until you’ve completed a whole set of them). When they’re fully independent (as they should be if you’re following the INVEST criteria), normal averages kick in. When you have to complete a story before you can do the next one, then we have the dependent-variable situation demonstrated in the simulation.

      I’ve been pondering the notion of a WIP simulator, but I’m not sure what it would look like (other than a simulation of the coin-flip game). In the class, I was just going to get some friends to do the coin-flip exercise and record them. If anybody has a better idea, post it here!

  2. investment on June 8, 2017 at 12:10 am

    Hi there, I do think your website could be having internet browser compatibility issues. Whenever I take a look at your site in Safari, it looks fine but when opening in IE, it has some overlapping issues. I just wanted to provide you with a quick heads up! Besides that, great site!

  3. investment shares on June 8, 2017 at 6:38 pm

    I am extremely impressed with your writing skills and also with the layout on your blog. Is this a paid theme or did you modify it yourself? Either way keep up the nice quality writing, it is rare to see a great blog like this one nowadays.

  4. home and family crafts on June 9, 2017 at 9:28 pm

    Woah! I’m really digging the template/theme of this website. It’s simple, yet effective. A lot of times it’s tough to get that “perfect balance” between superb usability and appearance. I must say you’ve done a excellent job with this. Also, the blog loads super quick for me on Firefox. Superb Blog!

  5. how to sleep on June 10, 2017 at 12:01 pm

    I think everything posted made a lot of sense. But, what about this? suppose you added a little content? I am not saying your content is not good, however what if you added a post title to maybe grab folk’s attention? I mean %BLOG_TITLE% is a little plain. You could look at Yahoo’s front page and note how they create news headlines to get people to click. You might try adding a video or a pic or two to get readers excited about everything’ve written. In my opinion, it would bring your blog a little bit more interesting.

  6. Denver on June 26, 2017 at 12:45 am

    Thanks alot – your answer solved all my problems after several days strnggliug

  7. Paul Newton on March 2, 2018 at 5:05 pm

    A project management trainer once sat my group down, gave us each 1 six-sided die, and had us roll the die to inject variability at each step of our simulated projects. I pocketed my die and keep it with me where ever I work. If asked about it I say that a project manager gave it to me as a schedule prediction tool. We used to have a joke about dice and estimation: “The first roll selects the number, the second roll selects the unit of time.”

Leave a Comment





Contact Us
Unable to send.
Please enter a valid email.
Thanks for getting in touch!
Share
Share