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Andy Carmichael
Lives in Southampton
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Andy Carmichael

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What is Flow Debt?
Dan Vacante's excellent treatise on Actionable Agile Metrics [vaca] introduces a term that may be unfamiliar, even to those with an interest and experience in managing flow systems. The term is Flow Debt - for a definition and explanation read on. My own pa...
Dan Vacante's excellent treatise on Actionable Agile Metrics [vaca] introduces a term that may be unfamiliar, even to those with an interest and experience in managing flow systems. The term is Flow Debt - for a definition an...
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Andy Carmichael

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Think Delivery Rate and Throughput are synonyms? So did I, but I've changed my mind.
Most people use Throughput and Delivery Rate in Kanban systems as synonyms - including myself up to this point. I've changed my view however. The canonical form of Little's Law in Kanban is as follows: Delivery Rate = WiP / ...
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Short article from NDC Magazine on the role of uncertainty in scheduling and design now on SlideShare.
Published in NDC Magazine (2009)
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See those three lines in the corner of your screen? Here’s how the "hamburger" icon got there: http://bbc.in/1HjmJvZ
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Growing Kanban in Three Dimensions
Kanban systems can work at different scales and in widely different contexts. Indeed any organisation that delivers discrete packages of value ("work items") and which is interested in maximising the value and timeliness of its delivery, can analyse and imp...
Kanban systems can work at different scales and in widely different contexts. Indeed any organisation that delivers discrete packages of value ("work items") and which is interested in maximising the value and timeliness of i...
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We need better ways to discuss the problem with estimating as practiced by many agile teams. Just say "No!" doesn't move us that far forward. I'm encouraged to see well argued and more detailed discussions emerging about alternatives to the "break into tiny pieces, guess and add" method which is so popular in some quarters. 

Here's a useful contribution to the debate from +Martin Burns, 
A major influence in the discussion about the usefulness (or otherwise) of Estimates in Software is the use and misuse of single number estimates: the risk involved and their frequent use as hard promises made inappropriately in conditions of uncertainty.It's certainly true that most stakeholders need and want their expectations managed. And it's certainly right, proper and fair that those who are funding work should have as much clarity as it is...
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Andy Carmichael

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Beyond Control Charts and Cumulative Flow Diagrams
Control Charts (CCs) and Cumulative Flow Diagrams (CFDs) are powerful ways to display information about a flow system, such as a Scrum or Kanban development process. Unfortunately the very fact that the charts display so much information means that it is of...
Control Charts (CCs) and Cumulative Flow Diagrams (CFDs) are powerful ways to display information about a flow system, such as a Scrum or Kanban development process. Unfortunately the very fact that the charts display so much...
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Thanks Michael. I'm happy to share this with people prior to an update being published on GitHub so link on its way to you.
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Little's Inequality
The interesting thing about Little's Law, in spite of its very general applicability, and in certain cases mathematical certainty, there are many cases when it simply does not hold true. In those cases it's not so much Little's  Law  as Little's  Inequality...
The interesting thing about Little's Law, in spite of its very general applicability, and in certain cases mathematical certainty, there are many cases when it simply does not hold true. In those cases it's not so much Little...
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Glossary Proposal
The Kanban Method is a process improvement approach based on understanding knowledge work as a flow system. The life cycle of the "work items" in such flow systems is examined and improvements to the process are made based on observable positive change. One...
The Kanban Method is a process improvement approach based on understanding knowledge work as a flow system. The life cycle of the "work items" in such flow systems is examined and improvements to the process are made based on...
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Earned Value Management and Agile Processes
I've recently been working with a client whose customer requires project reporting using Earned Valued Management metrics (EVM). It made me realise that, since they are also wishing to use agile methods, a paper I wrote back in 2008 could be relevant to the...
I've recently been working with a client whose customer requires project reporting using Earned Valued Management metrics (EVM). It made me realise that, since they are also wishing to use agile methods, a paper I wrote back ...
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Have him in circles
197 people
Ian James's profile photo
Guy Attrill's profile photo
janet jones's profile photo
Kathryn Tombs's profile photo
Allan Kelly's profile photo
Pooja Kapoor's profile photo
Craig Lucia's profile photo
Madeleine Tucker Smith's profile photo
Alexei Zheglov's profile photo
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Southampton
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Working to improve the way projects work
Introduction
I've been a consultant and trainer in software engineering for more years than I'd care to share. A common theme through that time has been understanding ways for groups of people to make better software faster. Most of my work now involves agile methods such as Lean, Scrum and Kanban. I've co-authored a number of books over the years, including Better Software Faster (2002, with Dan Haywood), which discusses how a toolset supporting a "single model" can facilitate agile development. I live in Southampton - also the University which gave me my first degree and doctorate - I'm a Fellow of the British Computer Society, and have a number of other bits of paper that say I know at least something about Scrum, Kanban, scuba diving, teaching, singing, map reading and golf!
Bragging rights
I once climbed the clock tower in the Palace of Westminster, watched the minute hand zooming round its face from the inside, and put my fingers in my ears when Big Ben struck noon!
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