Sherlock HolmesAndPairing
www.mozaicworks.com
Me
Adi BolboacProgrammerOrganizational & TechnicalTrainer &
Coach
www.mozaicworks.com
Pairing. Why. When.
Do you pair?Why do you pair?How often?
www.mozaicworks.com
Pairing roles
DriverNavigator
www.mozaicworks.com
Driver
Takes the decisionsConsults with the NavigatorFocuses on short
term actionsVerbalizes all the performed actions
www.mozaicworks.com
Navigator
Looks ahead for strategyAnnoyingly rechecks the facts of the
DriverAsks meaningful questionsVerbalizes agreement or
disagreementDoes not cross the Driver's comfort zone
www.mozaicworks.com
Holmes & Watson pairing
www.mozaicworks.com
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
www.mozaicworks.com
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
www.mozaicworks.com
Watson being a Navigator
If I irritated him by a certain methodical slowness in my
mentality, that irritation served only to make his own flame-like
intuitions and impressions flash up the more vividly and
swiftly
Dr. Watson
www.mozaicworks.com
Watson navigating: Facts
The navigator remembers facts to the driver The navigator
supports driver's decisionsThe navigator needs to see options
aheadProcessing data is hard for navigation
www.mozaicworks.com
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
www.mozaicworks.com
Holmes & Watson: Recap
www.mozaicworks.com
Holmes & Watson: Recap
Drive or NavigateObserve well. Verbalize. Give meaningful
suggestionsBeing a navigator is hardPairing is learning
www.mozaicworks.com
Some pairing ideas
Pair-programming (with testers
also)Pair-facilitationPair-talkingPair-writing (collective text
ownership)
www.mozaicworks.com
Pair-programming
www.mozaicworks.com
Pair-programming
Can be done anywhere: office, pub, etcChange roles/keyboard very
oftenOutcomes: learning, better productsFastest feedback cycle in
AgileCan be difficult
www.mozaicworks.com
Pair-testing
Focus on destoying the appFind sneaky ways the system might
crashChange roles of driver and navigatorOutcomes: learning, better
testsCan be difficult as well
www.mozaicworks.com
Pair-programming: Navigator
Adi tells story of Ron Jeffries being a navigator
www.mozaicworks.com
Pair-facilitation
Can be done by anyoneJust ask someone to pair when
facilitatingOutcome: learn better your skillsOutcome: be a better
listenerOutcome: simplify&clarify your explanations
www.mozaicworks.com
Pair-talking
Fast feedback on contentOutcome: the talk has better
contentOutcome: learn a lot from your pairOutcome: you learn more
from audience
www.mozaicworks.com
Pair-writing
www.mozaicworks.com
Pair-writing
Easier to start writingThe book can be finished fasterFast
feedback on contentLearning opportunity from your pair
www.mozaicworks.com
Pairing
Did I inspire you to pair?What other ideas for paring do you
have?When would you start paring?
www.mozaicworks.com
And the last question
Do you ever pair with your CEO?
www.mozaicworks.com
Want to learn more?
Read more about pair-programming gameson
http://blog.adrianbolboaca.ro
www.mozaicworks.com
Thank you!
The slides will be available on Slideshare&Twitter
Questions?
www.mozaicworks.com
Contact me
Unit testing workshopRemote pair-programmingTDD
workshopRefactoring workshopLegacy code workshopLegacy code
retreatCode retreat
@adibolb
www.mozaicworks.com
http://www.mozaicworks.com
[email protected]@adibolb
Extend your mentoring & training capacityAccelerate learning
through communities of practiceGrow your functional leaders and top
talents
www.mozaicworks.com
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
www.mozaicworks.com
