The document discusses the concepts of labels, expertise, and practices in software development. It advocates avoiding labels and instead focusing on constantly practicing and improving through doing. Being a verb, not a noun, is emphasized over rigidly defining oneself by labels. The overall message is to distrust experts and best practices, and instead prioritize doing good.

2. Hello, I’m
Dave
@/+pragdave
2

3. Hello, I’m
a Ruby
Programmer
3

4. Hello, I’m
Agile
4

5. Hello, I’m
Dave
Hello, I’m
a Ruby
Programmer
Hello, I’m
Labels
Agile

6. Labels

7. Hello, I’m
Agile
7

9. Hello, I’m
Using index
cards

10. Hello, I’m
Using index
cards
Hello, I’m
Having stand-
up meetings

11. Hello, I’m
Hello, I’m
Using index
Doing unit
cards
testing
Hello, I’m
Having stand-
up meetings

12. Hello, I’m
Hello, I’m
Using index
Doing unit
cards
testing
Hello, I’m
Having stand-
up meetings
Hello, I’m
Refactoring

13. Hello, I’m
Hello, I’m
Using index
Doing unit
cards
testing
Hello, I’m
Having stand- Hello, I’m
up meetings Using
Hello, I’m Cucumber!!!
Refactoring

14. Why?
Because that is what
the Agile Experts tell
me to do
9

15. That is not agile…

16. Hello, I’m
Hello, I’m
Using index
Doing unit
cards
testing
Hello, I’m
Hello, I’m
That is sticking RSpec!!!
Having stand-
Using
up meetings
labels on yourself
Hello, I’m
Refactoring

17. Hello, I’m
a Ruby
Programmer
12

18. I need to write a
web application
13

19. y !
I need to write a
b
u
web application
R
13

20. I need automate
all my work
14

21. y !
I need automate
b
u
all my work
R
14

22. I need to do what is
best for my customer
15

23. y !
I need to do what is
b
u
best for my customer
R
15

24. I need world peace
16

25. y !
I need world peace
b
R u
16

26. Ru
by
!
17

27. Ru
by
!
17

28. Ru
by
!
17

29. Hello, I’m
a Ruby
Programmer
18

30. Which means…
19

31. Which means…
• I know:
19

32. Which means…
• I know:
• all 90 built-in classes and modules, and/or
19

33. Which means…
• I know:
• all 90 built-in classes and modules, and/or
• all 143,797 Rails methods, and/or
19

34. Which means…
• I know:
• all 90 built-in classes and modules, and/or
• all 143,797 Rails methods, and/or
• I’ve written my own testing framework
19

35. Which means…
• I know:
• all 90 built-in classes and modules, and/or
• all 143,797 Rails methods, and/or
• I’ve written my own testing framework
19

36. That is not a
Ruby Programmer

37. That is pouring
facts into your brain

38. Hello, I’m Hello, I’m
a Ruby
Programmer Agile
The Problem?

39. Hello, I’m Hello, I’m
a Ruby
Programmer Agile
Labels are static

40. Hello, I’m Hello, I’m
a Ruby
Programmer Agile
No Awareness

41. Hello, I’m
Hello, I’m
Using index
Doing unit
cards
testing
Hello, I’m
Hello, I’m
Having stand-
Using RSpec!!!
up meetings
Hello, I’m
Refactoring

42. That is not Agile
26

43. That is not Agile
This is Agility…
26

44. http://www.geology.smu.edu/~dpa-www/robo/nbot/nbot_gravel_1.mpg

45. t
de(t)
u(t) = P · e(t) + I · e( )d + D ·
0 dt
28

46. t
de(t)
u(t) = P · e(t) + I · e( )d + D ·
0 dt
Proportional
Integral
Derivative
29

47. t
de(t)
u(t) = P · e(t) + I · e( )d + D ·
0 dt
fix = current + history + future
error trend

48. fix = current + history + future
error trend
what “don’t how
to do panic” urgent

49. A. Where do we want to be?
B. Where are we?
C. How do we improve our position?
32

50. A. Where do we want to be?
B. Where are we?
C. How do we improve our position?
33

51. A. Where do we want to be?
B. Where are we?
C. How do we improve our position?
This is Agility
33

52. A. Where do we want to be?
B. Where are we?
C. How do we improve our position?
This is Agility
There is no more
33

53. Hello, I’m
a Ruby
Programmer
34

54. Hello, I’m
a Ruby
Programmer
34

55. Instead…
35

56. Instead…
• I like to solve people’s problems
35

57. Instead…
• I like to solve people’s problems
• I know how to use computers to do this
35

58. Instead…
• I like to solve people’s problems
• I know how to use computers to do this
• One of my (many) tools is the Ruby language
35

59. Instead…
• I like to solve people’s problems
• I know how to use computers to do this
• One of my (many) tools is the Ruby language
• I practice Ruby-do
35

60. Ruby-do?
36

61. Ruby-do
Object-orientation is not the only
way to program
37

62. Ruby-do
Sequential code is not the only way
to program
38

63. Ruby-do
“Good” code is not the only code
39

64. Ruby-do
40

65. Ruby-do
Ruby is not the best programming
language
40

66. Ruby-do
Ruby is not the best programming
language
(there is no “best” programming
language)
40

67. Ruby-do
for item in items items.each do |item|
process(item) process(item)
end end
41

68. Ruby-do
name = “Dave” name = “Dave”
location = “TX” location = “TX”
likes = “code” likes = “code”
42

69. 1. Que0X said
February 21, 2008 at 13:04
got your point !, could you please explain advantage of learning
ruby over python? python already have a huge library from web to
Academia , while Ruby looks focusing on web stuff if i may tell !
what do you think ?
2. Akitaonrails said
February 21, 2008 at 14:52
@que0x I say you should learn both. period. no reason to learn
just 1.
http://webmat.wordpress.com/2008/02/20/do-not-learn-ruby/

70. Ruby-do
• Do you practice?
44

71. Ruby-do
• Confidence comes from practice,
not knowledge
• Constantly look for ways to practice
45

72. Because then…
• Distrust experts
• Distrust “best practices”
• Distrust labels
46

73. A Label Freezes You
A Label Defines You
A Label Makes You Simple

74. Don’t Label Yourself
You are what you do
48

75. Don’t Label Yourself
You are what you do
48

76. Be a VERB
not a NOUN
49

77. Do Good!
50