How to Get Stuff Right Innovation and facts over opinions and assumptions; follow a plan that responds to change. Project Control is application of control theory to development of solutions. Through creating tests first we create negative feedback to help development. Obstacle Driven Development combines the latest engineering methods and software development. ODD helps identify, correct and prevent errors as early and efficiently as practical. This presentation shows how ODD extends and combines ISO compatible V-models, Test Driven Development, requirements analysis, extended specifications and Agile. Please see the series for further information.

1. Obstacle Driven Development +
Project Control
How get Stuff Right 1.0

2. Testing First?
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Answering a
question before
its asked is like
creating a
solution before
a test.

3. Success & Failure
To ensure success we must identify,
correct and prevent failure.
• To most effectively find a solution
we attempt to fail it
• Solutions which resist all
attempts to fail are a success
• Identify failure before your
customer do
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4. Innovation
Innovation is about new
ideas and solutions.
• To be truly innovative
we cannot use tested
and proven solutions
• ODD & PC are not
tested and proven
• ODD & PC are about
testing and proving
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5. Preventing Errors
Earlier identification and correction
of errors; the more we can prevent.
• Errors cost far more to fix later
than to identify and correct
• Errors which are not prevented
cost 10x more per stage
• Testing our assumptions helps
prevent errors
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6. Inevitable?
Inevitable increase in
complexity requires new
methods.
• Complexity increases
exponentially
• Impossible to test
every possible
situation manually
• Get ahead of the
curve with ODD
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7. Background
Ideas of Obstacle Driven Development (ODD) are based on
numerous development processes including:
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• Control Theory
• Scientific Method
• ISO V-model
• Test Driven Development
• ISO specifications
• Requirements analysis spiral
• Agile principles
• SOLID principles

8. ODD Motivation
Life tests every
aspect of a products
development.
So,
• Why do
engineering
differently?
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9. Scientific & Engineering Method
Comparing scientific and
engineering methods show
differences.
• Depends on experience
and talent of engineers
• No way of testing
requirements
• Customers discover their
requirements differ from
products
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10. ODD Process
Process is generic to create a new
development models.
• Applications to hardware,
software and embedded
• Links obstacles with tests for
verification and validation
• Refactoring included in Validate
Solution
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11. Extending Scientific Methods
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Comparing methods we see structure
is identical and wording equivalent.
• Conclusion is the method is
scientific
• Each method repeatable to
continue refinement
• We can combine the methods for
R&D

12. Extending V-models
V-models extended
through separating and
adding stages.
• Stage gives a solution
to development
• Extends with
additional stages
• Supply and Assemble
for hardware &
embedded
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13. Extending Test Driven Development
TDD method extended throughout
development to test each stage.
• Testing initial stages ensures we
do not create errors later
• Testing and facts over
assumptions and opinions
• Unit tests give fully tested and
adaptable development
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14. Extending Requirements Analysis
SIL tree diagram models every
situation to process requirements.
• Severity and Controllability
added to each event
• Requirements found from SIL
ratings using branches
• Allows unit testing for every
possible situation
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15. Extending Control Theory
Control theory for
creating a solution gives
control of projects.
• Negative feedback from
testing solution
• Feedforward control is
creating tests
• Feedback control is
solving tests
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16. Project Control + ISO Requirements
Project Control adapts
continuously to new
standards and obstacles.
• Existing methods for
development are
adapted
• New ISO standards
are applied as tests
• Feedback paths
identify errors
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17. Project Control Update Times
Project control and
ODD allows much
faster updates and
identification of errors.
• Automotive errors
may be discovered
years after creation
• ODD/PC allows
much faster updates
through testing
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18. ODD Principles
Principles inspired by Agile
manifesto.
• Over substituted so both can
support development
• Stages adapted and models
created help facilitate aims
• Focus on linking obstacles to
solutions
• Processes and tools which
encourage individuals and
interactions
• Working software through
comprehensive documentation
• Contract negotiation through
customer collaboration
• Following a plan which responds
to change
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19. Generic Model OBSA
Comparing ODD with
OODA resulted in a
generic method to
describe many things.
• OBSA – Obstacle,
Behaviour, Solution,
Action
• Equivalent to OODA,
ODD and other fully
testable methods
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20. Thanks
Thanks for reading
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