in praise of RIGIDITYagileaustralia.com.au/2018/slides/agileaus-2018-james-ross.pdf · agile...
Transcript of in praise of RIGIDITYagileaustralia.com.au/2018/slides/agileaus-2018-james-ross.pdf · agile...
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in praise ofRIGIDITY
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James RossCTO @ Envato@jimmyjazz68
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AGILITY
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AGILITYnimbleness, deftness,dexterity, liveliness,
sprightliness
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RIGIDITY
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RIGIDITYsolidity, hardness,
stringency, stiffness,inflexibility
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no wonder we loveAGILITY
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but what if we'remissing
something?
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what if we'renot seeingthe whole picture?
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the hypothesis
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there is noAGILITYwithoutRIGIDITY
to support it
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the examples
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agile softwareagile wetwareagile systems
agile relationships
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event sourcingconcept maps
theory of constraintscrucial conversations
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event sourcing
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what is it?
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TL;DRevent sourcing means that
all truth in your system is captured asan append-only series of
immutable business events
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TL;DRno UPDATEno DELETE
only INSERT and SELECT
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an example
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how does it supportAGILITY?
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by never throwing any data away
event sourcinglets you build a time machine andreinterpret history whenever youcome up with a new idea you want to try
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how does it demandRIGIDITY?
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you must notmodify your events.
if you do,all bets are off
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agile interpretationsofhard facts
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what does it meanforyou?
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choose carefullyand
communicate clearlyyour
system's hard edges
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concept maps
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what are they?
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TL;DRa concept map is a visual glossary
of the specialised languageof your problem domain
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TL;DRa concept map is just
a collection of propositions.A proposition is just
a sentence that uses a verbto connect two nouns (concepts)
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an example
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source codeAgile Australia 2018 explores Agile Methodology
Agile Australia 2018 is a ConferenceAgile Australia 2018 is held at Crown PalladiumCrown Melbourne is composed of Crown Casino
Crown Melbourne is composed of Crown PalladiumExtreme Programming exemplifies Agile Methodology
Kent Beck created Extreme ProgrammingRachel Slattery organises Agile Australia 2018
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how does it supportAGILITY?
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by increasing the speed, effectivenessand correctness of sharing domain knowledge
concept mapsincrease the speed, effectivenessand correctness of development efforts
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how does it demandRIGIDITY?
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the core concepts in your domain
do not changeand are not open to
interpretation
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accelerated understandingof
strict meaning
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what does it meanforyou?
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provide clarityand
demand consistencyyour
team's communication
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theory of constraints
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what is it?
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TL;DRToC is a management paradigmthat sees any system as being
limited in the achievement of its goalby a single constraint at any time
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TL;DRToC adopts a
process of ongoing improvementbased on identifying the constraint
and reorganising everything else around it
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TL;DRIDENTIFY the constraintEXPLOIT the constraint
SUBORDINATE everything to the constraintELEVATE the constraint
RINSE & REPEAT
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an example
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how does it supportAGILITY?
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actually, that's the wrong question :)
ToCis instead supported by agile methods,applying them to elevate the constraint(step 4 of its 5 step improvement process)
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how does it demandRIGIDITY?
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anything you doto improve something that is
not a constraintis a complete
waste of time
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agile systemsthrough
stringent focus
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what does it meanforyou?
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stop wasting timeapplying
agile techniquesto things that
don't matter
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crucial conversations
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what is it?
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TL;DRcrucial conversations is a book
that describes a set of toolsfor talking when stakes are high
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TL;DReveryone has a path to action with 4 stages:
observation -> interpretation -> feeling -> actionor
facts -> story -> feeling -> action
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an example
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how does it supportAGILITY?
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by broadening our perspective andbuilding a pool of shared meaningcrucial conversationsbreaks down walls and builds bridgesbetween individuals and teams
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how does it demandRIGIDITY?
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by
strictly separatingobservable facts
frompersonal interpretations
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agile relationshipsthrough
agile interpretationsof
hard facts
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what does it meanforyou?
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learn to
share your pathand ask others to
share theirs
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in praise ofRIGIDITY
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in praise ofBALANCEAGILITY<->RIGIDITY
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questions