Model storming

Model Storming

A different approach to collaborative model discovery

Model Storming

Thursday, September 19, 13

About me@ziobrando

I do something else instead

Prelude

We need to complete the planning for the project portfolio for the whole year. We have- 17 teams- +160 projects- around 200 people involved- only 2 days leftWill you help us?

What would you do?

... ok

... but let’s play with my rules.

avanscoperta

My rules

Find a dedicated placeInvite all the relevant peopleProvide some simple rules...secret weapons :-)

My secret weapon

Let’s facilitate!

Ice breakers

... by 7 p.m.

The result?

One HUGE tangible result

The result?

One HUGE tangible resultConflicts resolved on-the-fly

The result?

The right conversations

The result?

The right conversationsBottlenecks highlighted

The result?

The right conversationsBottlenecks highlighted

4 month of smooth planning

The result?

one of

The result?

one of my

The result?

one of my

The result?

one of my

best working

The result?

one of my

best workingday

The result?

one of my

best workingday ever

This will never work.Thursday, September 19, 13

... ok

... but let’s play with my rules.

FoundationsSomething I talked about in London, not that long ago...

Ignorance is the single greatest impediment

to throughput.

Dan Northhttp://dannorth.net/2010/08/30/introducing-deliberate-discovery/

Learning is the constraint

Dan Northhttp://dannorth.net/2010/08/30/introducing-deliberate-discovery/

...maybe not the only one...

When doing DDD...

Software development is a learning process

Working code is a side effect

Coding 20cl, learning 20cl, deciding 20cl, waiting...

What can we do to improve learning?

What can we do to improve decision

making?

SummerAnd something quite

unexpected

A little community...

Started experimenting

@mathiasverraes

@mathiasverraes @heimeshoff

@mathiasverraes @heimeshoff@andreabalducci

@tojans

@tjaskula

@tojans

@tjaskula@yreynhout

@tojans

@tjaskula@yreynhout

@alessandrocolla

@tojans

@tjaskula@yreynhout

@alessandrocolla @jefclaes

@tojans

@tjaskula@yreynhout

@alessandrocolla @jefclaes@lorenzomassacci

@tojans

@tjaskula@yreynhout

@alessandrocolla @jefclaes@lorenzomassacci

@sleli

And the experiments worked

“This is awesome!”

“This is awesome!”“For the first time,

developers started asking the right questions!”

“This is awesome!”“For the first time,

developers started asking the right questions!”

“We turned the model into implementation on the same afternoon”

Event storming was “formalized”

And the experiments triggered new ideas

“Let’s use it to set up our Kanban board!”

“is there a UX version of the workshop?”

“How can we use this to steer implementation?”

“We used a different set of rules”

What is Model Storming?

Unlimited Modeling Space

Unlimited Modeling SpaceSimple Gaming Rules

Unlimited Modeling SpaceSimple Gaming RulesActive Collaboration

Addressing Complexity

Addressing ComplexityEverything is visible

Supporting divergence

Supporting divergenceDecide later

My problem is...

BIGGERThursday, September 19, 13

Conquer firstDivide later

My best friend

Unlimited surface

Unlimited surfaceYou don’t know the size of the

problem before exploring it

Active Collaboration

All participant should actively contribute

One Man

OneMarker

It’s no fun to just watch others play

Our brain...

http://www.wpclipart.com/medical/anatomy/brain/four_lobes_of_the_cerebral_cortex.png.html

System 1

System 1Quick pattern matching

Parallel processing, unaware mode

Low energy consumption

System 2

System 2Complex elaboration that need attention and concentration

System 2

No parallelism

Complex elaboration that need attention and concentration

System 2

High energy consumption

No parallelism

Maybe there’s a reason for that

Let’s examine carefully every possibility

System 2

No parallelism

System 2

No parallelism

It’s the same class!

System 2

No parallelism

It’s obvious!

System 2

No parallelism

It’s obvious!

Let’s consider Bounded Contexts

System 2

No parallelism

It’s obvious!

Let’s consider Bounded Contexts

Let’s see the whole

Our brainDoesn’t learn under stress

Provides inferior solutions under pressure

Tries to preserve energies

Our brain

Our brainQuick in pattern matching

(and unaware of it)

(and unaware of it)Provides inferior solutions

under pressure

under pressureTries to avoid complexity

under pressureTries to avoid complexityGets hooked by games

Can you pass by without completing?

And, by the way, playing is how we learn better

Gamification!

Gamification

We need some rules to start moving

Embrace Fuzzyness(temporarily)

It will compile

I promise

...and we still need him!

Deferring decisions

Implicit choicesThere’s nothing *right* yet

No legacy

Addressing complexity

Data firstStructure later

Everybody is partitioning the

system

I just like taking a detour first...

Lo-fi notation

UML is too complex to support a meaningful

conversation!

Whiteboards won’t compile anyway

Visualize everything

Legend and NotationRequirements and solution

SolutionsDisagreement

Context...

Keep the cognitive load small

Exploring

Guys, we’re doing this one really badly

Brainstorming rules

“We need at least 3 bad ideas”

Short timeboxesthrowaway code

...more ;-)

coderetreat.orgThursday, September 19, 13

Can we tweak it?

Negotiating

We need a tangible enemyif there’s none ...

Your colleague becomes the enemy

Negotiatingimplicit meaning

Blah, blah, blah...

...And obviously, blah,

blah...

Blah, blah, blah...

Ouch, he didn’t mention wah, wah...

A tangible artifact becomes the enemy

Your colleague becomes your ally

Proving

Still negotiating is wasteIt’s not about convincing the

others...

Coding against an ecosystem

How do we measure effect on an ecosystem?

Watching the ceiling is forbidden!

Still unanswered

Still unansweredThis might still be a Plan B

Full-immersion

Full-immersionGo-see Gemba style

Optimal path to implementation?

Some good ideas, though

It’s a fun joband

somebody’s gotta do it

Grazie!@ziobrando

Model storming

Technology

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