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 IBM Things You Thought You Didn’t Need To Care About That Have a Big Impact On Your Job XConf 2025
2. @hollycummins.com #Quarkus #IBM invisible forces shaping your job
3. why is everything hard?
4. why are computers terrible?
5. geography 101
6. geography 101 norway
7. @hollycummins.com #Quarkus #IBM
8. @hollycummins.com #Quarkus #IBM ski_regions:
9. @hollycummins.com #Quarkus #IBM ski_regions: - fr
10. @hollycummins.com #Quarkus #IBM ski_regions: - fr - ch
11. @hollycummins.com #Quarkus #IBM ski_regions: - fr - ch - se
12. @hollycummins.com #Quarkus #IBM ski_regions: - fr - ch - se - no
13. @hollycummins.com #Quarkus #IBM ski_regions: - fr - ch - se - no
14. @hollycummins.com #Quarkus #IBM ski_regions: - fr - ch - se - no {"ski_regions": ["fr", "ch", "se", false]}
15. @hollycummins.com #Quarkus #IBM ski_regions: - fr - ch - se - no {"ski_regions": ["fr", "ch", "se", false]}
16. @hollycummins.com #Quarkus #IBM ski_regions: - fr - ch - se - no {"ski_regions": ["fr", "ch", "se", false]}
17. @hollycummins.com #Quarkus #IBM ski_regions: - fr - ch - se - no {"ski_regions": ["fr", "ch", "se", false]}
18. @hollycummins.com #Quarkus #IBM ski_regions: - fr - ch - se - no {"ski_regions": ["fr", "ch", "se", false]}
19. @hollycummins.com #Quarkus #IBM ski_regions: - fr - ch - se - no {"ski_regions": ["fr", "ch", "se", false]} false - no
20. @hollycummins.com #Quarkus #IBM well-intentioned decision had bad outcome
21. how can we know what outcomes our decisions will have?
22. @hollycummins.com #Quarkus #IBM systems thinking
23. how can we make decisions in an uncertain world?
24. statistics 101
25. @hollycummins.com #Quarkus #IBM what do you call a statistician who lives in san francisco?
26. geography 201
27. @hollycummins.com #Quarkus #IBM what do you call a statistician who lives in san francisco?
28. @hollycummins.com #Quarkus #IBM what do you call a statistician who lives in san francisco? a data scientist.
29. @hollycummins.com #Quarkus #IBM statistics
30. @hollycummins.com #Quarkus #IBM data science statistics
31. @hollycummins.com #Quarkus #IBM data science statistics machine learning
32. @hollycummins.com #Quarkus #IBM data science statistics AI machine learning
33. @hollycummins.com #Quarkus #IBM even if you’re not doing AI, statistics is important
34. Bayes’ theory statistics 101
35. how can we detect spam?
36. @hollycummins.com #Quarkus #IBM “spamicity”
38. Exciting offer just for you! Deep discounts on Viagra. Limited time offer, act now.
39. Exciting offer just for you! Deep discounts on Viagra. Limited time offer, act now.
40. Exciting offer just for you! Deep discounts on Ozempic. Limited time offer, act now.
41. Exciting offer just for you! Deep discounts on Ozempic. Limited time offer, act now.
42. Exciting offer just for you! Deep discounts on Ozemp1c. Limited time offer, act now.
43. Exciting offer just for you! Deep discounts on 0zempic. Limited time offer, act now.
44. Exciting offer just for you! Deep discounts on Ozempick. Limited time offer, act now.
46. banned-words:
47. banned-words: - Ozempic
48. banned-words: - Ozempic - Ozempick
49. banned-words: - Ozempic - Ozempick - Ozempik
50. banned-words: - Ozempic - Ozempick - Ozempik - 0zempic
51. banned-words: - Ozempic - Ozempick - Ozempik - 0zempic - Ozemp1c
52. banned-words: - Ozempic - Ozempick - Ozempik - 0zempic - Ozemp1c - Øzempic
53. banned-words: - Ozempic - Ozempick - Ozempik - 0zempic - Ozemp1c - Øzempic - 0zempick
54. banned-words: - Ozempic - Ozempick - Ozempik - 0zempic - Ozemp1c - Øzempic - 0zempick - …
55. banned-words: - Ozempic - Ozempick - Ozempik - 0zempic - Ozemp1c - Øzempic - 0zempick - …
56. Dear D e a r f r Exciting E x c i t E x c i E x c you! y o u ! y o u ! D e e p y o Ozemp1c. O z e m p 1 c O z e m offer, o f f o f f e
57. Dear D e a r f r Exciting E x c i t E x c i E x c you! y o u ! y o u ! D e e p y o Ozemp1c. O z e m p 1 c O z e m offer, o f f o f f e Hey H e y A l Are A r e A r e y A r e A r e A r e week? w e w e e w e e k ? w e e k ? W e because b e c b e c b e c a u b e c b e the t h e c t h e c l t h the dishwasher! d i d i s d i s h w a side, s i s i d e , s i s i d s i d e to t o c l e t t o c l e a t o Ozempic O z O z e m p i c O z e O z far f a f a r s f f a r f a r f a appetite a p a p p e a p p e t i t e
58. Dear D e a r f r Exciting E x c i t E x c i E x c you! y o u ! y o u ! D e e p y o Ozemp1c. O z e m p 1 c O z e m offer, o f f o f f e Hey H e y A l Are A r e A r e y A r e A r e A r e week? w e w e e w e e k ? w e e k ? W e because b e c b e c b e c a u b e c b e the t h e c t h e c l t h the dishwasher! d i d i s d i s h w a side, s i s i d e , s i s i d s i d e to t o c l e t t o c l e a t o Ozempic O z O z e m p i c O z e O z far f a f a r s f f a r f a r f a appetite a p a p p e a p p e t i t e
59. Dear D e a r f r Exciting E x c i t E x c i E x c you! y o u ! y o u ! D e e p y o Ozemp1c. O z e m p 1 c O z e m offer, o f f o f f e Hey H e y A l Are A r e A r e y A r e A r e A r e week? w e w e e w e e k ? w e e k ? W e because b e c b e c b e c a u b e c b e the t h e c t h e c l t h the dishwasher! d i d i s d i s h w a side, s i s i d e , s i s i d s i d e to t o c l e t t o c l e a t o Ozempic O z O z e m p i c O z e O z far f a f a r s f f a r f a r f a appetite a p a p p e a p p e t i t e
60. Hey H e y A l Are A r e A r e y A r e A r e A r e week? w e w e e w e e k ? w e e k ? W e because b e c b e c b e c a u b e c b e the t h e c t h e c l t h the dishwasher! d i d i s d i s h w a side, s i s i d e , s i s i d s i d e to t o c l e t t o c l e a t o Ozempic O z O z e m p i c O z e O z far f a f a r s f f a r f a r f a appetite a p a p p e a p p e t i t e
62. offer act discount Ozemp1c dog dishwasher yesterday Ozempic
63. @hollycummins.com #Quarkus #IBM P(spam | 0zemp1c)
64. @hollycummins.com #Quarkus #IBM P(spam | 0zemp1c) “probability of”
65. @hollycummins.com #Quarkus #IBM P(spam | 0zemp1c) “given” “probability of”
66. @hollycummins.com #Quarkus #IBM P(A | B) = P(B | A) · P(A) P(B)
67. @hollycummins.com #Quarkus #IBM probability of A, given B P(A | B) = P(B | A) · P(A) P(B)
68. @hollycummins.com #Quarkus #IBM probability of A, given B probability of B, given A P(A | B) = P(B | A) · P(A) P(B)
69. @hollycummins.com #Quarkus #IBM probability of A, given B probability of B, given A probability of A P(A | B) = P(B | A) · P(A) P(B)
70. @hollycummins.com #Quarkus #IBM probability of A, given B probability of B, given A probability of A probability of B P(A | B) = P(B | A) · P(A) P(B)
71. @hollycummins.com #Quarkus #IBM probability of A, given B probability of B, given A probability of A probability of B guidance for a decision P(A | B) = P(B | A) · P(A) P(B)
72. @hollycummins.com #Quarkus #IBM P(spam | Ozemp1c) = P(Ozemp1c | spam) · P(spam) P(Ozemp1c)
73. @hollycummins.com #Quarkus #IBM is this email spam? P(spam | Ozemp1c) = P(Ozemp1c | spam) · P(spam) P(Ozemp1c)
74. @hollycummins.com #Quarkus #IBM is this email spam? what proportion of spam talks about Ozemp1c? P(spam | Ozemp1c) = P(Ozemp1c | spam) · P(spam) P(Ozemp1c)
75. @hollycummins.com #Quarkus #IBM is this email spam? what proportion of spam talks about Ozemp1c? what proportion of emails are spam? P(spam | Ozemp1c) = P(Ozemp1c | spam) · P(spam) P(Ozemp1c)
76. @hollycummins.com #Quarkus #IBM is this email spam? what proportion of spam talks about Ozemp1c? what proportion of emails are spam? what proportion of all emails mention Ozemp1c? P(spam | Ozemp1c) = P(Ozemp1c | spam) · P(spam) P(Ozemp1c)
77. @hollycummins.com #Quarkus #IBM P(spam | Ozemp1c) = P(Ozemp1c | spam) · P(spam) P(Ozemp1c)
78. @hollycummins.com #Quarkus #IBM P(spam | Ozemp1c) = P(Ozemp1c | spam) · P(spam) P(Ozemp1c) 1%
79. @hollycummins.com #Quarkus #IBM P(spam | Ozemp1c) = P(Ozemp1c | spam) · P(spam) P(Ozemp1c) 1% 0.001%
80. @hollycummins.com #Quarkus #IBM P(spam | Ozemp1c) = P(Ozemp1c | spam) · P(spam) P(Ozemp1c) 1% 6% 0.001%
81. @hollycummins.com #Quarkus #IBM P(spam | Ozemp1c) = P(Ozemp1c | spam) · P(spam) P(Ozemp1c) 1% 6% 0.001% 60%
82. @hollycummins.com #Quarkus #IBM recursion 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 )
83. @hollycummins.com #Quarkus #IBM 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 )
84. @hollycummins.com #Quarkus #IBM 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) what if I don’t know any of these numbers??
85. @hollycummins.com #Quarkus #IBM 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) what if I don’t know any of these numbers?? or this one?
86. @hollycummins.com #Quarkus #IBM 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) what if I don’t know any of these numbers?? or this one? most useless formula ever?
87. @hollycummins.com #Quarkus #IBM 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 )
88. @hollycummins.com #Quarkus #IBM 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) guess!
89. @hollycummins.com #Quarkus #IBM 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) guess! guess!
90. @hollycummins.com #Quarkus #IBM 𝖯 ( 𝖠 ∣ 𝖡 ) = 𝖯 ( 𝖡 ∣ 𝖠 ) ⋅ 𝖯 ( 𝖠 ) 𝖯 ( 𝖡 ) guess! guess! guess! or ignore, because it’s a normalizing factor
91. @hollycummins.com #Quarkus #IBM
92. @hollycummins.com #Quarkus #IBM "ignorance... coined into science."
93. @hollycummins.com #Quarkus #IBM “founded upon an error, and must be wholly rejected” "ignorance... coined into science."
94. @hollycummins.com #Quarkus #IBM “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”
95. @hollycummins.com #Quarkus #IBM “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”
96. @hollycummins.com #Quarkus #IBM
97. @hollycummins.com #Quarkus #IBM
98. @hollycummins.com #Quarkus #IBM cowpox?
99. @hollycummins.com #Quarkus #IBM cowpox? chickenpox?
100. @hollycummins.com #Quarkus #IBM P(chickenpox | spots) P(cowpox | spots) = = P(spots | chickenpox) · P(chickenpox) P(spots) P(spots | cowpox) · P(cowpox) P(spots)
101. @hollycummins.com #Quarkus #IBM P(chickenpox | spots) P(cowpox | spots) = = P(spots | chickenpox) · P(chickenpox) P(spots) P(spots | cowpox) · P(cowpox) P(spots)
102. @hollycummins.com #Quarkus #IBM P(chickenpox | spots) P(cowpox | spots) = = P(spots | chickenpox) · P(chickenpox) P(spots) P(spots | cowpox) · P(cowpox) P(spots) 85%
103. @hollycummins.com #Quarkus #IBM P(chickenpox | spots) P(cowpox | spots) = = P(spots | chickenpox) · P(chickenpox) P(spots) P(spots | cowpox) · P(cowpox) P(spots) 85% 1%
104. @hollycummins.com #Quarkus #IBM P(chickenpox | spots) P(cowpox | spots) = = P(spots | chickenpox) · P(chickenpox) P(spots) P(spots | cowpox) · P(cowpox) P(spots) 85% 1% 90%
105. @hollycummins.com #Quarkus #IBM P(chickenpox | spots) P(cowpox | spots) = = P(spots | chickenpox) · P(chickenpox) P(spots) P(spots | cowpox) · P(cowpox) P(spots) 85% 1% 90% 0.0001%
106. @hollycummins.com #Quarkus #IBM P(chickenpox | spots) P(cowpox | spots) = = P(spots | chickenpox) · P(chickenpox) P(spots) P(spots | cowpox) · P(cowpox) P(spots) 85% 1% 90% 0.0001% 0.85%
107. @hollycummins.com #Quarkus #IBM P(chickenpox | spots) P(cowpox | spots) = = P(spots | chickenpox) · P(chickenpox) P(spots) P(spots | cowpox) · P(cowpox) P(spots) 85% 1% 90% 0.0001% 0.85% 0.0009%
108. @hollycummins.com #Quarkus #IBM P(chickenpox | spots) P(cowpox | spots) = = P(spots | chickenpox) · P(chickenpox) P(spots) P(spots | cowpox) · P(cowpox) P(spots) 85% 1% 90% 0.0001% 0.85% 0.0009%
109. @hollycummins.com #Quarkus #IBM it’s chickenpox
110. @hollycummins.com #Quarkus #IBM common sense it’s chickenpox
111. @hollycummins.com #Quarkus #IBM magic static analysis tool 99% accurate
112. @hollycummins.com #Quarkus #IBM P(clean code | clean report) = P(clean report | clean code) · P(clean code) P(clean report)
113. @hollycummins.com #Quarkus #IBM P(clean code | clean report) = P(clean report | clean code) · P(clean code) P(clean report) 99%
114. @hollycummins.com #Quarkus #IBM P(clean code | clean report) = P(clean report | clean code) · P(clean code) P(clean report) 99% 1.98%
115. @hollycummins.com #Quarkus #IBM P(clean code | clean report) = P(clean report | clean code) · P(clean code) P(clean report) 99% 1% 1.98%
116. @hollycummins.com #Quarkus #IBM P(clean code | clean report) = P(clean report | clean code) · P(clean code) P(clean report) 99% 1% 1.98% 50%
117. @hollycummins.com #Quarkus #IBM not common-sense
118. @hollycummins.com #Quarkus #IBM artificial intelligence
119. @hollycummins.com #Quarkus #IBM top tip
120. @hollycummins.com #Quarkus #IBM tired: “we have no idea” top tip
121. @hollycummins.com #Quarkus #IBM tired: “we have no idea” wired: “we are adopting bayesian thinking” top tip
122. why does concurrency make my head hurt?
123. @hollycummins.com #Quarkus #IBM 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 )
124. @hollycummins.com #Quarkus #IBM 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?
125. @hollycummins.com #Quarkus #IBM 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?
126. @hollycummins.com #Quarkus #IBM 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?
127. @hollycummins.com #Quarkus #IBM 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?
128. @hollycummins.com #Quarkus #IBM 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?
129. chip design electrical engineering 101
130. @hollycummins.com #Quarkus #IBM 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/
131. @hollycummins.com #Quarkus #IBM 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
132. @hollycummins.com #Quarkus #IBM 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
133. @hollycummins.com #Quarkus #IBM 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
134. @hollycummins.com #Quarkus #IBM 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
135. @hollycummins.com #Quarkus #IBM 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 𝖯 ( 𝖼 𝗈 𝗇𝖼𝗎 𝗋𝗋𝖾𝗇 𝖼 𝗒 )
136. @hollycummins.com #Quarkus #IBM
137. @hollycummins.com #Quarkus #IBM why?
138. @hollycummins.com #Quarkus #IBM why? single-processor performance has plateaued
139. @hollycummins.com #Quarkus #IBM
140. @hollycummins.com #Quarkus #IBM amdahl’s law
141. @hollycummins.com #Quarkus #IBM we have to get good at concurrency
142. @hollycummins.com #Quarkus #IBM but not all of us have to :)
143. @hollycummins.com #Quarkus #IBM the quarkus team: P(headache | concurrency) < 0.10
144. @hollycummins.com #Quarkus #IBM 2022 people thought they had to do reactive programming
145. @hollycummins.com #Quarkus #IBM 2022 people thought they had to do reactive programming
146. @hollycummins.com #Quarkus #IBM 2025
147. @hollycummins.com #Quarkus #IBM framework
148. @hollycummins.com #Quarkus #IBM framework fast reactive core … if it’s quarkus :)
149. @hollycummins.com #Quarkus #IBM framework fast reactive core … if it’s quarkus :) user code
150. @hollycummins.com #Quarkus #IBM framework fast reactive core … if it’s quarkus :) user code reactive programming model
151. @hollycummins.com #Quarkus #IBM framework fast reactive core … if it’s quarkus :) user code reactive programming model virtual threads
152. @hollycummins.com #Quarkus #IBM framework fast reactive core … if it’s quarkus :) user code reactive programming model virtual threads structured concurrency
153. @hollycummins.com #Quarkus #IBM quarkus programming model @RunOnVirtualThread
154. why did green threads flop, and loom succeed?
155. @hollycummins.com #Quarkus #IBM 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?
156. why was AOT a bad idea, but GraalVM is a good one?
157. meteorology 101
158. meteorology 101
159. cloud meteorology 101
160. is my encrypted data safe?
161. @hollycummins.com #Quarkus #IBM
162. @hollycummins.com #Quarkus #IBM 336 combinations
163. @hollycummins.com #Quarkus #IBM 336 combinations 4 days
164. @hollycummins.com #Quarkus #IBM jxf ein
165. @hollycummins.com #Quarkus #IBM W-E-T-T-E-R-F-U-R
166. @hollycummins.com #Quarkus #IBM 336 combinations brute force
167. @hollycummins.com #Quarkus #IBM 336 combinations 18 combinations brute force bayes-ed
169. quantum computing physics 101
170. @hollycummins.com #Quarkus #IBM
172. qubit both 0 and 1
173. @hollycummins.com #Quarkus #IBM
174. quantum computers are becoming real
176. fridge colder than the space between the stars
177. fridge colder than the space between the stars actual quantum chip
178. @hollycummins.com #Quarkus #IBM quantum computers would crack most public-key cryptography
179. @hollycummins.com #Quarkus #IBM quantum computers would crack most public-key cryptography … but big enough ones don’t exist yet
180. @hollycummins.com #Quarkus #IBM schrodinger’s cryptography
181. @hollycummins.com #Quarkus #IBM quantum computers would crack most public-key cryptography
182. @hollycummins.com #Quarkus #IBM quantum computers would crack most public-key cryptography … but not all public-key cryptography
183. @hollycummins.com #Quarkus #IBM java 24
184. @hollycummins.com #Quarkus #IBM KeyPairGenerator g = KeyPairGenerator.getInstance("ML-KEM");
185. @hollycummins.com #Quarkus #IBM KeyPairGenerator g = KeyPairGenerator.getInstance("ML-KEM");
186. why is there all this hype, always?
187. business studies 101
188. venture capital business studies 101
189. @hollycummins.com #Quarkus #IBM
190. @hollycummins.com #Quarkus #IBM baby company
191. @hollycummins.com #Quarkus #IBM baby company
192. @hollycummins.com #Quarkus #IBM baby company
193. @hollycummins.com #Quarkus #IBM funding rounds baby company
194. @hollycummins.com #Quarkus #IBM funding rounds baby company attracted investment
195. @hollycummins.com #Quarkus #IBM funding rounds baby company attracted investment
196. @hollycummins.com #Quarkus #IBM funding rounds baby company attracted investment
197. @hollycummins.com #Quarkus #IBM funding rounds baby company attracted investment
198. @hollycummins.com #Quarkus #IBM funding rounds baby company attracted investment
199. @hollycummins.com #Quarkus #IBM funding rounds baby company attracted investment
200. @hollycummins.com #Quarkus #IBM funding rounds baby company attracted investment
201. @hollycummins.com #Quarkus #IBM funding rounds baby company attracted investment
202. @hollycummins.com #Quarkus #IBM “exit” funding rounds baby company attracted investment
203. @hollycummins.com #Quarkus #IBM “exit” funding rounds baby company IPO attracted investment
204. @hollycummins.com #Quarkus #IBM “exit” funding rounds baby company IPO acquisition attracted investment
205. @hollycummins.com #Quarkus #IBM “exit” funding rounds baby company IPO acquisition attracted investment
206. @hollycummins.com #Quarkus #IBM what attracts investment?
207. @hollycummins.com #Quarkus #IBM what attracts investment? stability?
208. @hollycummins.com #Quarkus #IBM what attracts investment? stability? profitability?
209. @hollycummins.com #Quarkus #IBM what attracts investment? stability? profitability? revenue?
210. @hollycummins.com #Quarkus #IBM what attracts investment? growth stability? profitability? revenue?
211. @hollycummins.com #Quarkus #IBM what attracts investment? growth stability? profitability? excitement revenue?
212. @hollycummins.com #Quarkus #IBM what attracts investment? growth stability? profitability? excitement revenue? likelihood of selling stake at a profit
213. @hollycummins.com #Quarkus #IBM “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
214. @hollycummins.com #Quarkus #IBM “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
215. why can’t I find a job?
216. why can’t I find a new job?
217. @hollycummins.com #Quarkus #IBM Source: indeed.com via https://newsletter.pragmaticengineer.com/p/software-engineering-job-openings?publication_id=458709 usa developer vacancies
218. @hollycummins.com #Quarkus #IBM Source: indeed.com via https://newsletter.pragmaticengineer.com/p/software-engineering-job-openings?publication_id=458709 uk developer vacancies
219. interest rates macroeconomics 101
220. @hollycummins.com #Quarkus #IBM ZIRP
221. @hollycummins.com #Quarkus #IBM ZIRP “zero interest-rate phenomenon”
222. @hollycummins.com #Quarkus #IBM 0%
223. @hollycummins.com #Quarkus #IBM <1%
224. @hollycummins.com #Quarkus #IBM Source: Bank of England UK interest rates
225. @hollycummins.com #Quarkus #IBM Source: Bank of England averting subprime collapse UK interest rates
226. @hollycummins.com #Quarkus #IBM Source: Bank of England averting subprime collapse covid UK interest rates
227. @hollycummins.com #Quarkus #IBM Source: Bank of England averting subprime collapse covid 0.1% (!) UK interest rates
228. @hollycummins.com #Quarkus #IBM Source: Bank of England averting subprime collapse covid 0.1% (!) inflation shortages war UK interest rates
229. @hollycummins.com #Quarkus #IBM Source: Bank of England UK interest rates
230. @hollycummins.com #Quarkus #IBM exit attracted investment baby company
231. @hollycummins.com #Quarkus #IBM exit attracted investment baby company
232. @hollycummins.com #Quarkus #IBM exit attracted investment baby company
233. @hollycummins.com #Quarkus #IBM exit attracted investment baby company risk
234. @hollycummins.com #Quarkus #IBM ZIRP
235. @hollycummins.com #Quarkus #IBM software company ZIRP
236. @hollycummins.com #Quarkus #IBM government bond software company ZIRP
237. @hollycummins.com #Quarkus #IBM government bond risk return software company ZIRP
238. @hollycummins.com #Quarkus #IBM government bond risk return software company high ZIRP
239. @hollycummins.com #Quarkus #IBM government bond risk return software company high 20% - 500% ZIRP
240. @hollycummins.com #Quarkus #IBM government bond low risk return software company high 20% - 500% ZIRP
241. @hollycummins.com #Quarkus #IBM government bond low 0% risk return software company high 20% - 500% ZIRP
242. @hollycummins.com #Quarkus #IBM government bond low 0% risk return software company high 20% - 500% ZIRP
243. @hollycummins.com #Quarkus #IBM government bond low 4% risk return software company high 20% - 500% post-ZIRP
244. @hollycummins.com #Quarkus #IBM government bond low 4% risk return software company high 20% - 500% post-ZIRP
245. @hollycummins.com #Quarkus #IBM less investment means less hiring
246. @hollycummins.com #Quarkus #IBM less investment means less hiring
247. what about the ai-lephant in the room?
248. is AI killing jobs?
249. AI is attracting heavy investment exit hype generation
250. @hollycummins.com #Quarkus #IBM “our AI strategy is working”
251. just because AI makes developers more productive, doesn’t mean it will reduce the number of developers
252. jevon’s paradox economics 101
253. @holly_cummins #Quarkus #IBM jevon’s paradox
254. @holly_cummins #Quarkus #IBM jevon’s paradox “efficiency improvements can lead to increased consumption”
255. @holly_cummins #Quarkus #IBM what we imagine when we widen roads
256. @holly_cummins #Quarkus #IBM what we get
257. @hollycummins.com #Quarkus #IBM software is not going away
258. @hollycummins.com #Quarkus #IBM 1800s
259. @hollycummins.com #Quarkus #IBM “knocker-up” 1800s
260. @hollycummins.com #Quarkus #IBM “knocker-up” 1800s human alarm clock
261. @hollycummins.com #Quarkus #IBM “knocker-up” 1800s - 1940s human alarm clock
262. @hollycummins.com #Quarkus #IBM “knocker-up” 1800s finite demand - 1940s human alarm clock
263. @hollycummins.com #Quarkus #IBM “knocker-up” 1800s finite demand only employees need waking up - 1940s human alarm clock
264. @hollycummins.com #Quarkus #IBM “knocker-up” 1800s finite demand only employees need waking up no one needs waking up more than once - 1940s human alarm clock
265. @hollycummins.com #Quarkus #IBM the more software we have, the more we want
266. @hollycummins.com #Quarkus #IBM
267. @hollycummins.com #Quarkus #IBM software to do stuff
268. @hollycummins.com #Quarkus #IBM software to do stuff software to do more stuff
269. @hollycummins.com #Quarkus #IBM software to do stuff software to do more stuff software to tell people about software
270. @hollycummins.com #Quarkus #IBM software to do stuff software to do more stuff software to tell people about software software to bypass advertisements in the software
271. @hollycummins.com #Quarkus #IBM 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
272. @hollycummins.com #Quarkus #IBM 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
273. @hollycummins.com #Quarkus #IBM 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
274. @hollycummins.com #Quarkus #IBM 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 vibe-coded software
275. @hollycummins.com #Quarkus #IBM 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 vibe-coded software software to manage the software
276. @hollycummins.com #Quarkus #IBM 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 vibe-coded software software to manage the software software to write the software
277. @hollycummins.com #Quarkus #IBM 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 vibe-coded software software to manage the software software to write the software software to manage the software that writes the software
278. @hollycummins.com #Quarkus #IBM 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 vibe-coded 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
279. @hollycummins.com #Quarkus #IBM 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 vibe-coded 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
280. @hollycummins.com #Quarkus #IBM 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 vibe-coded 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 …
281. @hollycummins.com #Quarkus #IBM
282. @hollycummins.com #Quarkus #IBM Source: indeed.com via https://newsletter.pragmaticengineer.com/p/software-engineering-job-openings?publication_id=458709 usa developer vacancies
283. @hollycummins.com #Quarkus #IBM Source: indeed.com via https://newsletter.pragmaticengineer.com/p/software-engineering-job-openings?publication_id=458709 usa developer vacancies chatgpt released
284. @holly_cummins #Quarkus #IBM tl;dpa (too long; didn’t pay attention)
285. @holly_cummins #Quarkus #IBM tl;dpa ⁃ statistics is (annoyingly) important, especially bayes (too long; didn’t pay attention)
286. @holly_cummins #Quarkus #IBM tl;dpa ⁃ statistics is (annoyingly) important, especially bayes ⁃ to achieve more power, computers have to add more cores (too long; didn’t pay attention)
287. @holly_cummins #Quarkus #IBM 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)
288. @holly_cummins #Quarkus #IBM 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)
289. @holly_cummins #Quarkus #IBM 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)
290. @holly_cummins #Quarkus #IBM 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)
291. http://hollycummins.com/things-to-care-about-xconf/ @hollycummins.com