Things You Thought You Didn’t Need To Care About That Have a Big Impact On Your Job

Development is about working with computers, right? Well, not quite. Development is all about working with computers (easy), and working with people (hard). Oh, and it’s about physics. Things like the speed of light and thermodynamics influence APIs, because they influence hardware and networking. If, like Holly, you slept through statistics modules in university, it will be a surprise to discover how statistics has changed our development workflows. Finally, we mustn’t forget economics. The end of zero-interest-rates has changed the employment landscape for many of us. In this wide-ranging talk, Holly will cover why the end of Moore’s law means we might finally need to get to grips with concurrent programming, why is Loom a good idea now when green threads were a bad idea, why is AOT a good idea now when it used to be a bad idea, and how much you should care about business studies, finance, and statistics.

Transcript

1. Holly Cummins Red Hat Things You Thought You Didn’t Need To Care About That Have a Big Impact On Your Job Devoxx UK 2025
2. @hollycummins.com #RedHat invisible forces shaping your job
3. why is my life terrible?
4. why are computers terrible?
5. geography 101
6. geography 101 norway
7. @hollycummins.com #RedHat ski_regions: - fr - ch - no - se
8. @hollycummins.com #RedHat ski_regions: - fr - ch - no - se {"ski_regions": ["fr", "ch", false, "se"]}
9. @hollycummins.com #RedHat ski_regions: - fr - ch - no - se {"ski_regions": ["fr", "ch", false, "se"]} false - no
10. @hollycummins.com #RedHat well-intentioned decision had bad outcome
11. how can we know what outcomes our decisions will have?
12. how can we make decisions in an uncertain world?
13. statistics 101
14. @hollycummins.com #RedHat what do you call a statistician who lives in san francisco?
15. geography 201
16. @hollycummins.com #RedHat what do you call a statistician who lives in san francisco?
17. @hollycummins.com #RedHat what do you call a statistician who lives in san francisco? a data scientist.
18. @hollycummins.com #RedHat statistics
19. @hollycummins.com #RedHat data science statistics
20. @hollycummins.com #RedHat data science statistics machine learning
21. @hollycummins.com #RedHat data science statistics AI machine learning
22. @hollycummins.com #RedHat even outside AI, statistics is important
23. Bayes’ theory statistics 101
24. @hollycummins.com #RedHat 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) guidance for a decision
25. @hollycummins.com #RedHat 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) probability of B, given A guidance for a decision
26. @hollycummins.com #RedHat 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) probability of B, given A probability of A, given B guidance for a decision
27. @hollycummins.com #RedHat 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) probability of B, given A probability of A, given B probability of A guidance for a decision
28. @hollycummins.com #RedHat 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) probability of B, given A probability of A, given B probability of A probability of B guidance for a decision
29. @hollycummins.com #RedHat 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) probability of B, given A probability of A, given B probability of A probability of B guidance for a decision guidance for a decision
30. @hollycummins.com #RedHat 𝖯 ( 𝗋𝖺𝗂𝗇 ∣ 𝖼𝗅𝗈 𝗎𝖽𝗌 )
31. @hollycummins.com #RedHat 𝖯 ( 𝗋𝖺𝗂𝗇 ∣ 𝖼𝗅𝗈 𝗎𝖽𝗌 ) = 𝖯 ( 𝖼 𝗅𝗈𝗎 𝖽 𝗌 ∣ 𝗋𝖺𝗂𝗇 ) ⋅ 𝖯 ( 𝗋 𝖺 𝗂𝗇 ) 𝖯 ( 𝖼𝗅 𝗈 𝗎 𝖽 𝗌 )
32. @hollycummins.com #RedHat 𝖯 ( 𝗋𝖺𝗂𝗇 ∣ 𝖼𝗅𝗈 𝗎𝖽𝗌 ) = 𝖯 ( 𝖼 𝗅𝗈𝗎 𝖽 𝗌 ∣ 𝗋𝖺𝗂𝗇 ) ⋅ 𝖯 ( 𝗋 𝖺 𝗂𝗇 ) 𝖯 ( 𝖼𝗅 𝗈 𝗎 𝖽 𝗌 ) will I need an umbrella?
33. @hollycummins.com #RedHat 𝖯 ( 𝗋𝖺𝗂𝗇 ∣ 𝖼𝗅𝗈 𝗎𝖽𝗌 ) = 𝖯 ( 𝖼 𝗅𝗈𝗎 𝖽 𝗌 ∣ 𝗋𝖺𝗂𝗇 ) ⋅ 𝖯 ( 𝗋 𝖺 𝗂𝗇 ) 𝖯 ( 𝖼𝗅 𝗈 𝗎 𝖽 𝗌 ) will I need an umbrella? is this a sunshower?
34. @hollycummins.com #RedHat 𝖯 ( 𝗋𝖺𝗂𝗇 ∣ 𝖼𝗅𝗈 𝗎𝖽𝗌 ) = 𝖯 ( 𝖼 𝗅𝗈𝗎 𝖽 𝗌 ∣ 𝗋𝖺𝗂𝗇 ) ⋅ 𝖯 ( 𝗋 𝖺 𝗂𝗇 ) 𝖯 ( 𝖼𝗅 𝗈 𝗎 𝖽 𝗌 ) will I need an umbrella? is this a sunshower? how often does it rain in the UK?
35. @hollycummins.com #RedHat 𝖯 ( 𝗋𝖺𝗂𝗇 ∣ 𝖼𝗅𝗈 𝗎𝖽𝗌 ) = 𝖯 ( 𝖼 𝗅𝗈𝗎 𝖽 𝗌 ∣ 𝗋𝖺𝗂𝗇 ) ⋅ 𝖯 ( 𝗋 𝖺 𝗂𝗇 ) 𝖯 ( 𝖼𝗅 𝗈 𝗎 𝖽 𝗌 ) will I need an umbrella? is this a sunshower? how often does it rain in the UK? is it often cloudy in the UK?
36. @hollycummins.com #RedHat 𝖯 ( 𝗋𝖺𝗂𝗇 ∣ 𝖼𝗅𝗈 𝗎𝖽𝗌 ) = 𝟫𝟫 % ⋅ 𝟦 𝟤 % 𝟦𝟥 % = 97 % will I need an umbrella? is this not a sunshower? how often does it rain in london? how often is it cloudy in london?
37. @hollycummins.com #RedHat 𝖯 ( 𝗋𝖺𝗂𝗇 ∣ 𝖼𝗅𝗈 𝗎𝖽𝗌 ) = 𝟫𝟫 % ⋅ 𝟦 𝟤 % 𝟦𝟥 % = 97 % will I need an umbrella? is this not a sunshower? how often does it rain in london? how often is it cloudy in london?
38. @hollycummins.com #RedHat 𝖯 ( 𝗋𝖺𝗂𝗇 ∣ 𝖼𝗅𝗈 𝗎𝖽𝗌 ) = 𝟫𝟫 % ⋅ 𝟦 𝟤 % 𝟫𝟢 % = 46 % will I need an umbrella? is this not a sunshower? how often does it rain in london? how often is it cloudy in london?
39. @hollycummins.com #RedHat 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) probability of B, given A guidance for a decision
40. @hollycummins.com #RedHat 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) probability of B, given A what if I don’t know any of these numbers?? guidance for a decision
41. @hollycummins.com #RedHat 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) probability of B, given A what if I don’t know any of these numbers?? or this one? guidance for a decision
42. @hollycummins.com #RedHat 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) probability of B, given A what if I don’t know any of these numbers?? or this one? guidance for a decision most useless formula ever?
43. @hollycummins.com #RedHat 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) probability of B, given A guess! guess! guess! guidance for a decision
44. @hollycummins.com #RedHat
45. @hollycummins.com #RedHat "ignorance... coined into science."
46. @hollycummins.com #RedHat “founded upon an error, and must be wholly rejected” "ignorance... coined into science."
47. @hollycummins.com #RedHat “founded upon an error, and must be wholly rejected” "ignorance... coined into science." “perhaps the only error to which the mathematical world has so deeply committed itself”
48. @hollycummins.com #RedHat “founded upon an error, and must be wholly rejected” "ignorance... coined into science." “a staggering falsity” “perhaps the only error to which the mathematical world has so deeply committed itself”
49. @hollycummins.com #RedHat
50. @hollycummins.com #RedHat “spamicity”
51. @hollycummins.com #RedHat initial belief + new data
52. @hollycummins.com #RedHat initial belief + new data
53. @hollycummins.com #RedHat initial belief + new data improved belief
54. @hollycummins.com #RedHat
55. @hollycummins.com #RedHat
56. @hollycummins.com #RedHat
57. @hollycummins.com #RedHat
58. @hollycummins.com #RedHat
59. @hollycummins.com #RedHat
60. @hollycummins.com #RedHat
61. @hollycummins.com #RedHat
62. @hollycummins.com #RedHat
63. @hollycummins.com #RedHat left of line: 2 right of line: 3
64. @hollycummins.com #RedHat left of line: 2 right of line: 3 guess: 2/5 across
65. @hollycummins.com #RedHat left of line: 2 right of line: 3 guess: 2/5 across bayesian guess: 3/7 across
66. @hollycummins.com #RedHat
67. @hollycummins.com #RedHat
68. @hollycummins.com #RedHat left of line: 0 right of line: 3
69. @hollycummins.com #RedHat left of line: 0 right of line: 3 guess: 0/3, so on left bumper
70. @hollycummins.com #RedHat left of line: 0 right of line: 3 guess: 0/3, so on left bumper bayesian guess: 1/4 across
71. @hollycummins.com #RedHat
72. @hollycummins.com #RedHat left of line: 0 right of line: 0 bayesian guess: 1/2 across
73. @hollycummins.com #RedHat
74. @hollycummins.com #RedHat
75. @hollycummins.com #RedHat left of line: 0 right of line: 1 bayesian guess: 1/3 across
76. @hollycummins.com #RedHat
77. @hollycummins.com #RedHat left of line: 1 right of line: 1 bayesian guess: 2/4 across
78. @hollycummins.com #RedHat left of line: 1 right of line: 2 bayesian guess: 2/5 across
79. @hollycummins.com #RedHat
80. @hollycummins.com #RedHat experiment 0: 1 left, 1 right
81. @hollycummins.com #RedHat experiment 0: 1 left, 1 right 1 2
82. @hollycummins.com #RedHat experiment 0: 1 left, 1 right 1 2 experiment 1: 0 left, 1 right
83. @hollycummins.com #RedHat experiment 0: 1 left, 1 right 1 2 1 3 experiment 1: 0 left, 1 right
84. @hollycummins.com #RedHat experiment 0: 1 left, 1 right 1 2 1 3 experiment 1: 0 left, 1 right experiment 2: 1 left, 0 right
85. @hollycummins.com #RedHat experiment 0: 1 left, 1 right 1 2 1 3 experiment 1: 0 left, 1 right 2 4 experiment 2: 1 left, 0 right
86. @hollycummins.com #RedHat
87. @hollycummins.com #RedHat experiment 0: 1 left, 1 right 1 2
88. @hollycummins.com #RedHat experiment 0: 1 left, 1 right 1 2 3 7 experiment 1: 2 left, 3 right
89. @hollycummins.com #RedHat
90. @hollycummins.com #RedHat
91. why does concurrency make my head hurt?
92. @hollycummins.com #RedHat 𝖯 ( 𝖼𝗈 𝗇𝖼 𝗎 𝗋 𝗋𝖾 𝗇𝖼 𝗒 ∣ 𝗁 𝖾𝖺𝖽𝖺 𝖼𝗁𝖾 ) = 𝖯 ( 𝗁 𝖾 𝖺 𝖽 𝖺𝖼 𝗁𝖾 ∣ 𝖼𝗈𝗇 𝖼 𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) ⋅ 𝖯 ( 𝖼𝗈𝗇 𝖼𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) 𝖯 ( 𝗁 𝖾𝖺𝖽 𝖺 𝖼𝗁𝖾 )
93. @hollycummins.com #RedHat 𝖯 ( 𝖼𝗈 𝗇𝖼 𝗎 𝗋 𝗋𝖾 𝗇𝖼 𝗒 ∣ 𝗁 𝖾𝖺𝖽𝖺 𝖼𝗁𝖾 ) = 𝖯 ( 𝗁 𝖾 𝖺 𝖽 𝖺𝖼 𝗁𝖾 ∣ 𝖼𝗈𝗇 𝖼 𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) ⋅ 𝖯 ( 𝖼𝗈𝗇 𝖼𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) 𝖯 ( 𝗁 𝖾𝖺𝖽 𝖺 𝖼𝗁𝖾 ) can I blame concurrency for my headache?
94. @hollycummins.com #RedHat 𝖯 ( 𝖼𝗈 𝗇𝖼 𝗎 𝗋 𝗋𝖾 𝗇𝖼 𝗒 ∣ 𝗁 𝖾𝖺𝖽𝖺 𝖼𝗁𝖾 ) = 𝖯 ( 𝗁 𝖾 𝖺 𝖽 𝖺𝖼 𝗁𝖾 ∣ 𝖼𝗈𝗇 𝖼 𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) ⋅ 𝖯 ( 𝖼𝗈𝗇 𝖼𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) 𝖯 ( 𝗁 𝖾𝖺𝖽 𝖺 𝖼𝗁𝖾 ) can I blame concurrency for my headache? how many devs can cope with concurrency?
95. @hollycummins.com #RedHat 𝖯 ( 𝖼𝗈 𝗇𝖼 𝗎 𝗋 𝗋𝖾 𝗇𝖼 𝗒 ∣ 𝗁 𝖾𝖺𝖽𝖺 𝖼𝗁𝖾 ) = 𝖯 ( 𝗁 𝖾 𝖺 𝖽 𝖺𝖼 𝗁𝖾 ∣ 𝖼𝗈𝗇 𝖼 𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) ⋅ 𝖯 ( 𝖼𝗈𝗇 𝖼𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) 𝖯 ( 𝗁 𝖾𝖺𝖽 𝖺 𝖼𝗁𝖾 ) can I blame concurrency for my headache? how many devs can cope with concurrency? how much concurrency is there?
96. @hollycummins.com #RedHat 𝖯 ( 𝖼𝗈 𝗇𝖼 𝗎 𝗋 𝗋𝖾 𝗇𝖼 𝗒 ∣ 𝗁 𝖾𝖺𝖽𝖺 𝖼𝗁𝖾 ) = 𝖯 ( 𝗁 𝖾 𝖺 𝖽 𝖺𝖼 𝗁𝖾 ∣ 𝖼𝗈𝗇 𝖼 𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) ⋅ 𝖯 ( 𝖼𝗈𝗇 𝖼𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) 𝖯 ( 𝗁 𝖾𝖺𝖽 𝖺 𝖼𝗁𝖾 ) can I blame concurrency for my headache? how many devs can cope with concurrency? how often do heads hurt? how much concurrency is there?
97. @hollycummins.com #RedHat 𝖯 ( 𝖼𝗈 𝗇𝖼 𝗎 𝗋 𝗋𝖾 𝗇𝖼 𝗒 ∣ 𝗁 𝖾𝖺𝖽𝖺 𝖼𝗁𝖾 ) = 𝖯 ( 𝗁 𝖾 𝖺 𝖽 𝖺𝖼 𝗁𝖾 ∣ 𝖼𝗈𝗇 𝖼 𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) ⋅ 𝖯 ( 𝖼𝗈𝗇 𝖼𝗎𝗋𝗋 𝖾𝗇 𝖼𝗒 ) 𝖯 ( 𝗁 𝖾𝖺𝖽 𝖺 𝖼𝗁𝖾 ) can I blame concurrency for my headache? how many devs can cope with concurrency? how often do heads hurt? how much concurrency is there?
98. chip design electrical engineering 101
99. @hollycummins.com #RedHat cores per cpu amd + intel sources: https://www.reddit.com/r/Amd/comments/6cu5ss/highest_amount_of_cores_per_cpu_amd_vs_intel_year/ and https://www.servethehome.com/amd-and-intel-2p-server-core-count-growth-2010-2022/
100. @hollycummins.com #RedHat cores per cpu amd + intel sources: https://www.reddit.com/r/Amd/comments/6cu5ss/highest_amount_of_cores_per_cpu_amd_vs_intel_year/ and https://www.servethehome.com/amd-and-intel-2p-server-core-count-growth-2010-2022/ 1
101. @hollycummins.com #RedHat cores per cpu amd + intel sources: https://www.reddit.com/r/Amd/comments/6cu5ss/highest_amount_of_cores_per_cpu_amd_vs_intel_year/ and https://www.servethehome.com/amd-and-intel-2p-server-core-count-growth-2010-2022/ 1 2
102. @hollycummins.com #RedHat cores per cpu amd + intel sources: https://www.reddit.com/r/Amd/comments/6cu5ss/highest_amount_of_cores_per_cpu_amd_vs_intel_year/ and https://www.servethehome.com/amd-and-intel-2p-server-core-count-growth-2010-2022/ 1 2 48
103. @hollycummins.com #RedHat cores per cpu amd + intel sources: https://www.reddit.com/r/Amd/comments/6cu5ss/highest_amount_of_cores_per_cpu_amd_vs_intel_year/ and https://www.servethehome.com/amd-and-intel-2p-server-core-count-growth-2010-2022/ 1 2 48 128
104. @hollycummins.com #RedHat
105. @hollycummins.com #RedHat why?
106. @hollycummins.com #RedHat why? single-processor performance has plateaued
107. @hollycummins.com #RedHat
108. @hollycummins.com #RedHat amdahl’s law
109. @hollycummins.com #RedHat we have to get good at concurrency
110. @hollycummins.com #RedHat but not all of us have to :)
111. @hollycummins.com #RedHat 2022 people thought they had to do reactive programming
112. @hollycummins.com #RedHat 2022 people thought they had to do reactive programming
113. @hollycummins.com #RedHat 2025
114. @hollycummins.com #RedHat framework
115. @hollycummins.com #RedHat framework fast reactive core … if it’s quarkus :)
116. @hollycummins.com #RedHat framework fast reactive core … if it’s quarkus :) user code
117. @hollycummins.com #RedHat framework fast reactive core … if it’s quarkus :) user code reactive programming model
118. @hollycummins.com #RedHat framework fast reactive core … if it’s quarkus :) user code reactive programming model structured concurrency
119. @hollycummins.com #RedHat framework fast reactive core … if it’s quarkus :) user code reactive programming model virtual threads structured concurrency
120. @hollycummins.com #RedHat quarkus programming model @RunOnVirtualThread
121. why did green threads flop, and loom succeed?
122. @hollycummins.com #RedHat sources: https://www.reddit.com/r/Amd/comments/6cu5ss/highest_amount_of_cores_per_cpu_amd_vs_intel_year/ and https://www.servethehome.com/amd-and-intel-2p-server-core-count-growth-2010-2022/ 1 2 48 128 why did green threads flop, and loom succeed?
123. why was AOT a bad idea, but GraalVM is a good one?
124. cloud meteorology 101
125. is my encrypted data safe?
126. @hollycummins.com #RedHat
127. @hollycummins.com #RedHat 336 combinations
128. @hollycummins.com #RedHat 336 combinations 4 days
129. @hollycummins.com #RedHat jxf ein
130. @hollycummins.com #RedHat W-E-T-T-E-R-F-U-R
131. @hollycummins.com #RedHat 336 combinations brute force
132. @hollycummins.com #RedHat 336 combinations 18 combinations brute force bayes-ed
134. quantum computing physics 101
135. @hollycummins.com #RedHat schrodinger’s cryptography
136. @hollycummins.com #RedHat
137. @hollycummins.com #RedHat
138. @hollycummins.com #RedHat quantum computers can crack most public-key cryptography
139. @hollycummins.com #RedHat quantum computers can crack most public-key cryptography … but not all
140. @hollycummins.com #RedHat java 24
141. @hollycummins.com #RedHat KeyPairGenerator g = KeyPairGenerator.getInstance("ML-KEM");
142. @hollycummins.com #RedHat KeyPairGenerator g = KeyPairGenerator.getInstance("ML-KEM");
143. why is there all this hype, always?
144. venture capital business studies 101
145. @hollycummins.com #RedHat
146. @hollycummins.com #RedHat baby company
147. @hollycummins.com #RedHat baby company
148. @hollycummins.com #RedHat baby company
149. @hollycummins.com #RedHat funding rounds baby company
150. @hollycummins.com #RedHat attracted investment funding rounds baby company
151. @hollycummins.com #RedHat attracted investment funding rounds baby company
152. @hollycummins.com #RedHat attracted investment funding rounds baby company
153. @hollycummins.com #RedHat attracted investment funding rounds baby company
154. @hollycummins.com #RedHat attracted investment funding rounds baby company
155. @hollycummins.com #RedHat attracted investment funding rounds baby company
156. @hollycummins.com #RedHat attracted investment funding rounds baby company
157. @hollycummins.com #RedHat attracted investment funding rounds baby company
158. @hollycummins.com #RedHat “exit” attracted investment funding rounds baby company
159. @hollycummins.com #RedHat “exit” attracted investment funding rounds baby company IPO
160. @hollycummins.com #RedHat “exit” attracted investment funding rounds baby company IPO acquisition
161. @hollycummins.com #RedHat “exit” attracted investment funding rounds baby company IPO acquisition
162. @hollycummins.com #RedHat what attracts investment?
163. @hollycummins.com #RedHat what attracts investment? stability
164. @hollycummins.com #RedHat what attracts investment? stability profit
165. @hollycummins.com #RedHat what attracts investment? stability profit revenue
166. @hollycummins.com #RedHat what attracts investment? growth stability profit revenue
167. @hollycummins.com #RedHat what attracts investment? growth stability profit excitement revenue
168. @hollycummins.com #RedHat what attracts investment? growth stability profit excitement revenue likelihood of selling stake at a profit
169. @hollycummins.com #RedHat “It’s not simply that one piece of technology is overhyped, it’s that hype is a necessary ingredient of the current business ecosystem of the tech industry.” – Meredith Whittaker
170. @hollycummins.com #RedHat “It’s not simply that one piece of technology is overhyped, it’s that hype is a necessary ingredient of the current business ecosystem of the tech industry.” – Meredith Whittaker
171. why can’t I find a job?
172. why can’t I find a new job?
173. @hollycummins.com #RedHat Source: indeed.com via https://newsletter.pragmaticengineer.com/p/software-engineering-job-openings?publication_id=458709 usa developer vacancies
174. @hollycummins.com #RedHat Source: indeed.com via https://newsletter.pragmaticengineer.com/p/software-engineering-job-openings?publication_id=458709 uk developer vacancies
175. interest rates macroeconomics 101
176. @hollycummins.com #RedHat ZIRP
177. @hollycummins.com #RedHat ZIRP “zero interest-rate phenomenon”
178. @hollycummins.com #RedHat 0%
179. @hollycummins.com #RedHat <1%
180. @hollycummins.com #RedHat Source: Bank of England UK interest rates
181. @hollycummins.com #RedHat Source: Bank of England averting subprime collapse UK interest rates
182. @hollycummins.com #RedHat Source: Bank of England averting subprime collapse covid UK interest rates
183. @hollycummins.com #RedHat Source: Bank of England averting subprime collapse covid 0.1% (!) UK interest rates
184. @hollycummins.com #RedHat Source: Bank of England averting subprime collapse covid 0.1% (!) inflation shortages war UK interest rates
185. @hollycummins.com #RedHat Source: Bank of England UK interest rates
186. @hollycummins.com #RedHat exit attracted investment baby company
187. @hollycummins.com #RedHat exit attracted investment baby company
188. @hollycummins.com #RedHat exit attracted investment baby company
189. @hollycummins.com #RedHat exit attracted investment baby company risk
190. @hollycummins.com #RedHat ZIRP
191. @hollycummins.com #RedHat software company ZIRP
192. @hollycummins.com #RedHat government bond software company ZIRP
193. @hollycummins.com #RedHat government bond risk return software company ZIRP
194. @hollycummins.com #RedHat government bond risk return software company high ZIRP
195. @hollycummins.com #RedHat government bond risk return software company high 20% - 500% ZIRP
196. @hollycummins.com #RedHat government bond low risk return software company high 20% - 500% ZIRP
197. @hollycummins.com #RedHat government bond low 0% risk return software company high 20% - 500% ZIRP
198. @hollycummins.com #RedHat government bond low 0% risk return software company high 20% - 500% ZIRP
199. @hollycummins.com #RedHat government bond low 4% risk return software company high 20% - 500% post-ZIRP
200. @hollycummins.com #RedHat government bond low 4% risk return software company high 20% - 500% post-ZIRP
201. @hollycummins.com #RedHat less investment means less hiring
202. @hollycummins.com #RedHat less investment means less hiring
203. what about the ai-lephant in the room?
204. is AI killing jobs?
205. AI is attracting heavy investment exit hype generation
206. just because AI makes developers more productive, doesn’t mean it will reduce the number of developers
207. jevon’s paradox economics 101
208. @holly_cummins #RedHat jevon’s paradox
209. @holly_cummins #RedHat jevon’s paradox “efficiency improvements can lead to increased consumption”
210. @holly_cummins #RedHat what we imagine when we widen roads
211. @holly_cummins #RedHat what we get
212. @hollycummins.com #RedHat software is not going away
213. @hollycummins.com #RedHat 1800s
214. @hollycummins.com #RedHat “knocker-up” 1800s
215. @hollycummins.com #RedHat “knocker-up” 1800s human alarm clock
216. @hollycummins.com #RedHat “knocker-up” 1800s - 1940s human alarm clock
217. @hollycummins.com #RedHat “knocker-up” 1800s finite demand - 1940s human alarm clock
218. @hollycummins.com #RedHat “knocker-up” 1800s finite demand only employees need waking up - 1940s human alarm clock
219. @hollycummins.com #RedHat “knocker-up” 1800s finite demand only employees need waking up no one needs waking up more than once - 1940s human alarm clock
220. @hollycummins.com #RedHat the more software we have, the more we want
221. @hollycummins.com #RedHat
222. @hollycummins.com #RedHat software to do stuff
223. @hollycummins.com #RedHat software to do stuff software to do more stuff
224. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software
225. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software
226. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software software to bypass the bypass software so ads still show
227. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software software to bypass the bypass software so ads still show software to gamify software
228. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software software to bypass the bypass software so ads still show software to gamify software software to monitor the software
229. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software software to bypass the bypass software so ads still show software to gamify software software to monitor the software software to debug the software
230. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software software to bypass the bypass software so ads still show software to gamify software software to monitor the software software to debug the software software to manage the software
231. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software software to bypass the bypass software so ads still show software to gamify software software to monitor the software software to debug the software software to manage the software software to write the software
232. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software software to bypass the bypass software so ads still show software to gamify software software to monitor the software software to debug the software software to manage the software software to write the software software to manage the software that writes the software
233. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software software to bypass the bypass software so ads still show software to gamify software software to monitor the software software to debug the software software to manage the software software to write the software software to manage the software that writes the software software to try and avoid skynet
234. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software software to bypass the bypass software so ads still show software to gamify software software to monitor the software software to debug the software software to manage the software software to write the software software to manage the software that writes the software software to try and avoid skynet software to work out the meaning of life
235. @hollycummins.com #RedHat software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software software to bypass the bypass software so ads still show software to gamify software software to monitor the software software to debug the software software to manage the software software to write the software software to manage the software that writes the software software to try and avoid skynet software to work out the meaning of life …
236. @hollycummins.com #RedHat
237. @hollycummins.com #RedHat Source: indeed.com via https://newsletter.pragmaticengineer.com/p/software-engineering-job-openings?publication_id=458709 usa developer vacancies
238. @hollycummins.com #RedHat Source: indeed.com via https://newsletter.pragmaticengineer.com/p/software-engineering-job-openings?publication_id=458709 usa developer vacancies chatgpt released
239. @holly_cummins #RedHat tl;dpa (too long; didn’t pay attention)
240. @holly_cummins #RedHat tl;dpa ⁃ statistics is (annoyingly) important, especially bayes (too long; didn’t pay attention)
241. @holly_cummins #RedHat tl;dpa ⁃ statistics is (annoyingly) important, especially bayes ⁃ to achieve more power, computers have to add more cores (too long; didn’t pay attention)
242. @holly_cummins #RedHat tl;dpa ⁃ statistics is (annoyingly) important, especially bayes ⁃ to achieve more power, computers have to add more cores ⁃ software is not very good at taking advantage of these cores (too long; didn’t pay attention)
243. @holly_cummins #RedHat tl;dpa ⁃ statistics is (annoyingly) important, especially bayes ⁃ to achieve more power, computers have to add more cores ⁃ software is not very good at taking advantage of these cores ⁃ for data you want to be secret in 10 years, use quantum-safe crypto (too long; didn’t pay attention)
244. @holly_cummins #RedHat tl;dpa ⁃ statistics is (annoyingly) important, especially bayes ⁃ to achieve more power, computers have to add more cores ⁃ software is not very good at taking advantage of these cores ⁃ for data you want to be secret in 10 years, use quantum-safe crypto ⁃ the rise of interest rates means a tougher job market (too long; didn’t pay attention)
245. @holly_cummins #RedHat tl;dpa ⁃ statistics is (annoyingly) important, especially bayes ⁃ to achieve more power, computers have to add more cores ⁃ software is not very good at taking advantage of these cores ⁃ for data you want to be secret in 10 years, use quantum-safe crypto ⁃ the rise of interest rates means a tougher job market ⁃ jevon’s paradox means demand for software will go up even if ai makes producing software cheaper (too long; didn’t pay attention)
246. slides @hollycummins.com