The document discusses pairing in software development. It describes different pairing roles like driver and navigator and provides examples of how Sherlock Holmes and Dr. Watson exemplified these roles. The driver takes decisions, consults the navigator, and verbalizes actions while the navigator looks ahead, asks questions, and provides feedback without crossing the driver's comfort zone. Pair programming, testing, facilitation, talking and writing are presented as different ways of pairing with potential benefits like faster learning and higher quality products.

1. Sherlock Holmes
And
Pairing
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2. Me
Adi Bolboacă
Programmer
Organizational & Technical
Trainer & Coach www.mozaicworks.com

3. Pairing. Why. When.
Do you pair?
Why do you pair?
How often?
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4. Pairing roles
Driver
Navigator
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5. Driver
Takes the decisions
Consults with the Navigator
Focuses on short term actions
Verbalizes all the performed actions
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6. Navigator
Looks ahead for strategy
Annoyingly rechecks the facts of the Driver
Asks meaningful questions
Verbalizes agreement or disagreement
Does not cross the Driver's comfort zone
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7. Holmes & Watson pairing
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8. Holmes driving: action
“Holmes took his revolver from his drawer
and slipped it in his pocket. It was clear
that he thought that our night's work
might be a serious one.”
Sherlock Holmes
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9. Holmes driving: data
“Data! Data! Data!” he cried impatiently.
“I can't make bricks without clay.”
“There is nothing more deceptive than an
obvious fact.”
Sherlock Holmes
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10. Watson being a Navigator
“If I irritated him by a certain methodical
slowness in my mentality, that irritation
served only to make his own flame­like
intuitions and impressions flash up the
more vividly and swiftly”
Dr. Watson
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11. Watson navigating: Facts
The navigator remembers facts to the driver
The navigator supports driver's decisions
The navigator needs to see options ahead
Processing data is hard for navigation
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12. Holmes & Watson: Learning
“Education never ends, Watson. It is a
series of lessons, with the greatest for the
last.”
Sherlock Holmes
"I have not lived for years with Sherlock
Holmes for nothing."
Dr. Watson
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13. Holmes & Watson: Recap
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14. Holmes & Watson: Recap
Drive or Navigate
Observe well. Verbalize.
Give meaningful suggestions
Being a navigator is hard
Pairing is learning
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15. Some pairing ideas
Pair-programming (with testers also)
Pair-facilitation
Pair-talking
Pair-writing (collective text ownership)
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16. Pair-programming
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17. Pair-programming
Can be done anywhere: office, pub, etc
Change roles/keyboard very often
Outcomes: learning, better products
Fastest feedback cycle in Agile
Can be difficult
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18. Pair-testing
Focus on “destoying” the app
Find sneaky ways the system might crash
Change roles of driver and navigator
Outcomes: learning, better tests
Can be difficult as well
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19. Pair-programming: Navigator
Adi tells story of Ron Jeffries being a
navigator
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20. Pair-facilitation
Can be done by anyone
Just ask someone to pair when facilitating
Outcome: learn better your skills
Outcome: be a better listener
Outcome: simplify&clarify your explanations
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21. Pair-talking
Fast feedback on content
Outcome: the talk has better content
Outcome: learn a lot from your pair
Outcome: you learn more from audience
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22. Pair-writing
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23. Pair-writing
Easier to start writing
The book can be finished faster
Fast feedback on content
Learning opportunity from your pair
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24. Pairing
Did I inspire you to pair?
What other ideas for paring do you have?
When would you start paring?
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25. And the last question
Do you ever pair with your CEO?
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26. Want to learn more?
Read more about pair-programming games
on http://blog.adrianbolboaca.ro
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27. Thank you!
The slides will be available on
Slideshare&Twitter
Questions?
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28. Contact me
Unit testing workshop
Remote pair-programming
TDD workshop
Refactoring workshop
Legacy code workshop
Legacy code retreat
Code retreat
@adibolb
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29. http://www.mozaicworks.com
adrian.bolboaca@mozaicworks.com
@adibolb
Extend your mentoring & training
capacity
Accelerate learning through
communities of practice
Grow your functional leaders and top
talents
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30. Images
http://img.thesun.co.uk/aidemitlum/archive/01090/SNF2301TVCC-380_1090987a.jpg
http://en.wikipedia.org/wiki/File:Paget_holmes.png
http://seanbanville.com/wp-content/uploads/2010/04/writing.jpg
http://agile2012.agilealliance.org/files/5113/3529/2537/Ron_Jeffries-nobull.jpg
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