1. At the
Extremities
of Extreme
Julian Fitzell
Image © Christopher Michot
AgileNorth
June 9, 2011

2. col·lab·o·ra·tion /kəˌlabəˈrāSHən/
n. The act of working with others to
create or achieve something.

4. Collaboration
bandwidth
• SalesForce - outsource your infrastructure and
app maintenance to another - not bandwidth
• Twitter - Narrow band - cope with many
interactions
• Facebook - widening bandwidth - those with
1,500 friends are about Narrow but those with
20 are much broader
• Online Gaming - WoW - play people you don’t
know or with friends but it is immersive

7. Online Gaming
• fine-grained collaboration
• immersion
• transparency / feedback
• flow / transitions

10. A Simple Idea
What if we allowed a group of
developers to simultaneously develop
the same running application?

11. fine-grained
collaboration

14. Roam territory Wolf Pack
Programming ™
Search for a herd
Test prey animals

15. If it takes flight,
whole pack chases
If it stands, pack circles,
two wolves attack
Select easiest
prey

16. Roam territory
Search for a herd
Test prey animals

17. Roam problem domain / code base
Search for a herd
Test prey animals

18. Roam problem domain / code base
Search for a requirement / feature
Test prey animals

19. Roam problem domain / code base
Search for a requirement / feature
Test spikes

20. If it takes flight,
whole pack chases
If it stands, pack circles,
two wolves attack
Select easiest
prey

21. If it takes flight,
whole pack chases
If it stands, pack circles,
two wolves attack
Select easiest
implementation

22. If close to a solution, whole
pack programs (flight)
If it stands, pack circles,
two wolves attack
Select easiest
implementation

23. If close to a solution, whole
pack programs (flight)
If it fights back, two wolves
program; others rest (stand-off)
Select easiest
implementation

24. immersion

25. theCode: is
^ [ :your | reality ]

26. Pairing
© Paul Stravinsky

27. Pairing
restricts your
view on the
world
© Paul Stravinsky

28. an d
in
t w le t
tr i p programming
pair

29. transparency

30. Heat and Scent
http://upload.wikimedia.org/wikipedia/commons/7/7d/Canis_lupus_tracks_in_sand.jpg

31. Continuous Testing

32. A wolf’s
concept of
territory
PD-USGOV-INTERIOR-NPS.

33. Open Channel
Image © Retron / Darren (flickr)

34. flow

36. [ Build fails ] Continuous
Integration [ Build succeeds with all tests passing ]
build
[ Build fails but quick fix ]
Revert changes Fix and commit Integration
complete
Repository Repeat
Start Sync local files Re-Sync local Commit local
files changes
[ All conflicts resolved ]
Test
Build locally
Refactor
Code

37. Repository Repeat
Start Spike Commit
Select Spike
changes
Test [ Build succeeds with all tests passing ]
Everyone
works on it
Refactor
Code

38. Repository Repeat
Start Spike Select Spike
Commit
changes
Test Everyone
[ Build succeeds with all tests passing ]
works on it
Code
Refactor

39. col·lab·o·ra·tion /kəˌlabəˈrāSHən/
n. The act of working with others to
create or achieve something.

40. © 2008 Ivan Tessier

41. Julian Fitzell
jfitzell@cincom.com
Twitter: @jfitzell
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