3. The Extreme Decade
Progress, Pain, Paradox

6. Ron Jeffries Chet Hendrickson

8. Knowing all the tasks...

11. He's Canadian,
you know...

13. Chris Matts

14. Mary Poppendieck

21. Estimating work...

23. Watch the video at
http://link.jbrains.ca/pVURX3

30. Knowing how quickly we go...

34. He's Canadian,
you know...

36. Promiscuous Pairing and Beginner’s Mind:
Embrace Inexperience
Arlo Belshee
Architect
Silver Platter Software
Pasadena, CA 91103
(503) 265-1263
a_xp@arlim.org
the paramount concerns. Performance was second, and
Abstract features were a distant third.
The company was a startup, so we were tight on both
Many traditional software practices stress the cash and time. The company was typically operating with
importance of programming in Flow. XP directly between -30 and 180 Days ‘Till Broke. Our contracts all
challenges the assertion that Flow is critical and had lead times of 3-5 years. This meant that sales had to
proclaims Pair Flow. start at the same time as engineering. Thus, engineering
Both Flow states are fragile. They are easily disrupted had to produce many sales demos and to frequently alter
by outside distraction or task rotation. Both take a long the product to more closely fit the needs of a particular
time to enter. Furthermore, it takes days for a given pair customer.
to be comfortable enough with each other to be able to Due to these influences, we chose a software process
achieve Pair Flow at all. with rapid feedback and change. We ran the shortest
My team at Silver Platter discovered that there is a third iterations we could (1 week) to get the most data possible.
option to achieve high-efficiency programming. Our team We tracked our metrics closely, and we ran several
spent the majority of its time in Beginner’s Mind. experiments each iteration. We used the metrics to decide
Whereas Flow depends on stability, Beginner’s Mind what worked and to what degree. We then adopted those
depends on instability, yet provides similar efficiency things that worked and started the next set of experiments.
gains to a constant state of Flow. Chief among these experiments were variations on

37. Promiscuous Pairing and Beginner’s Mind:
Embrace Inexperience
Arlo Belshee
Architect
Silver Platter Software
Pasadena, CA 91103
(503) 265-1263
a_xp@arlim.org
the paramount concerns. Performance was second, and
Abstract features were a distant third.
The company was a startup, so we were tight on both
Many traditional software practices stress the cash and time. The company was typically operating with
importance of programming in Flow. XP directly between -30 and 180 Days ‘Till Broke. Our contracts all
challenges the assertion that Flow is critical and had lead times of 3-5 years. This meant that sales had to
proclaims Pair Flow. start at the same time as engineering. Thus, engineering
Both Flow states are fragile. They are easily disrupted had to produce many sales demos and to frequently alter
by outside distraction or task rotation. Both take a long the product to more closely fit the needs of a particular
time to enter. Furthermore, it takes days for a given pair customer.
to be comfortable enough with each other to be able to Due to these influences, we chose a software process
achieve Pair Flow at all. with rapid feedback and change. We ran the shortest
My team at Silver Platter discovered that there is a third iterations we could (1 week) to get the most data possible.
option to achieve high-efficiency programming. Our team We tracked our metrics closely, and we ran several
spent the majority of its time in Beginner’s Mind. experiments each iteration. We used the metrics to decide
Whereas Flow depends on stability, Beginner’s Mind what worked and to what degree. We then adopted those
depends on instability, yet provides similar efficiency things that worked and started the next set of experiments.
gains to a constant state of Flow. Chief among these experiments were variations on

42. Eliyahu Moshe Goldratt
31.03.1947–11.06.2011

43. I promised you a paradox...

45. Agile

46. agile

48. Ron Jeffries Chet Hendrickson

49. Corey Haines
J. B. Rainsberger

50. XP

51. Bill Caputo
FOR ME, XP AIN’T OUT THERE,
IT’S IN HERE.

52. Watch the video at
http://link.jbrains.ca/ojPnyd

53. ME@JBRAINS.CA
europeantour2011.com
The Extreme Decade
Progress, Pain, Paradox