Lean Software Development: Validated Learning
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VALIDATED LEARNING
A Tale of Business, Vanity and Medieval Torture
Òscar [email protected]
PaylogicAugust 2014
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Progress
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Learn
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we failed
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we failed
but at least we learned something
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Failed
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Learned
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Learning is vital
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What works?
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What works?
What do customers want?
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What works?
What do customers want?
Right path?
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Goals
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Demonstrate progress
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Demonstrate progress
Discover truths
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Demonstrate progress
Discover truths
Prevent failure
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Can
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Should
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Sustainable
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Break down & Test
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Did it make the product better?
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How do we know?
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Plead guilty
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Trial by ordeal
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208
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?
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2/3
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Teaching the garden to weed itself
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Make truth reveal itself
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Is there interest?
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Expertise
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Knowledge
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Progress
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According to plan
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According to plan
High quality
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According to plan
High quality
Expected costs
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If nobody wants it,
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If nobody wants it,
High quality, done in budget
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If nobody wants it,
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If nobody wants it,
High quality, done in budget
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tchair → 36.8°C
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tchair → 36.8°C
$ → 0
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Experiment
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Experiment: product
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Experiment: product
Solve real problems
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Experiment: product
Solve real problems
When ready, it has already customers
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Questions
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Do customers have this problem?
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Do customers have this problem?
Would they buy a solution?
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Do customers have this problem?
Would they buy a solution?
From us?
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Do customers have this problem?
Would they buy a solution?
From us?
Can we build it?
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Answers
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Identify
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What should we test?
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What should we test?
What are the riskiest parts of the plan?
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What should we test?
What are the leaps of faith?
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Build-Measure-Learn
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MVP
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Min product for a loop turn.
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Min product for a loop turn.
Min effort and dev time.
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Min product for a loop turn.
Min effort and dev time.
Lacks essential features.
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Min product for a loop turn.
Min effort and dev time.
Lacks essential features.
Measurable impact.
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Minimum
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3rd party Apps? Carrier choice? 3G? iChat? Calendar? WiFi sync? Word/Excel docs?
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Any additional work beyond what was
required to start learning is waste.
No matter how important it might have seemed at the time.
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Vanity Metrics
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Changes
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Changes
Increase of sales
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Changes
Increase of sales
More Changes
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Changes
Increase of sales
More Changes
More increase of sales
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Learn
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Baseline
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Baseline
Tune
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Baseline
Tune
Pivot or Persevere
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Kanban
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Include validation: more productive
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Include validation: more productive
Why build feature not part of test?
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Include validation: more productive
Why build feature not part of test?
Why build story unless well understood?
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Learn more
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Learn more
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