Which Agile 13 Aug 2015
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istanbulcoders.org13 August 2015
Which Agile?
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Abdulkadir Yaman
@ThoughtWorksSystems Thinker
Gopher
@abdulkadiryaman
github.com/yaman
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Agile in the wild
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daily standup
2-4 weeks iteration
prioritization retrospectives
futurespectives
collecting feedback
measuringprogress
...
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Systems 101
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What is a system?
A systemis a set of interacting orinterdependent components forming an
integrated whole.- wikipedia
A system is more than the sum of its par- Donella H. Meadows
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System Elements - 1
(Stocks, flows - Structural)
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Agile Equivalent - 1
Stocks ----->Inflow ----->
Outflow ----->
Backlog ?Business
requirements ?
Iterations ?
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System Elements - 2(Feedback Loops - Behavioral)
Stabilizing loops - Balancing Feedback Runaway loops - Reinforcin
- Profits fell because in
investment fell becau
Timbergen - Econom
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Population increases by time if:
Fertility Ratio > Mortality Ratio
Population decr
Mortality Ratio
System Elements - 2(Feedback Loops - Behavioral)
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Agile Equivalent - 2
Backlog
Iteration
Done
B
DeveloperCreate bugs
Codebase
Burn stories
R
increasingcomplexity
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Agile Equivalent - 3
Quality
Retrospective
Goal
B
IdentifyProblems
R
increasingcomplexity
Solve Problems
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Agile Equivalent - 4
Codebase Goal
R
decreasingcomplexity
R
increasingquality
TDD
shortertest
cy
cle
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So why do we fail to transform?
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Leverage Points - Places to
intervene in a System 12 - Numbers11 - Buffers10 - Stock and Flo
09 - Delays08 - Balancing Fee07 - Reinforcing F
06 - Information F05 - Rules, IncentiConstraints
04 - Self-Organiza
03 - Goals02 - Paradigms01 - Transcending
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Lets reverse the process
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The Goal
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Prioritize
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Constraints?
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Theory of constraints
identifying the most important limiting factor (i.econstraint) that stands in the way of achieving
and then systematically improving that constrai
is no longer the limiting factor
In manufacturing, the constraint is often referre
bottleneck.
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Next - Continuous Improvemen
C ti I t
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Continuous Improvement
(Shifting Paradigms)
Reminds me something familiar
Stock
Flows Feedback Loops
Delays Buffers
Goals
hmmm, systems thinking?
L t L i O i ti
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Last - Learning Organizations
(Transcending Paradigms)
A learning organiz
term given to a com
facilitates the learn
members and conti
transformsitself.
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References
Thinking in Systems: A primer by DonMeadows
The Goal by Jeff Cox and Eliyahu M.
Goldratt
The Phoenix Project by Kevin Behr, GSpafford, Gene Kim
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Thank You for listenin
