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← Code that is complex or clever can pass its tests while still being bad code.
17 connected korrents · 15 moments on record from 29 Aug 2003 to 6 Sept 2026.
Everything filed under software performance
software performance
Everything filed under software quality
software quality
Everything filed under Anthropic
Anthropic
Everything filed under coding agents
coding agents
Everything filed under design
design Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Read this korrent: Code that is complex or clever can pass its tests while still being bad code. Code that is complex or clever can pass its tests while still being bad code. Last stated 11 years ago
22 Oct 2015
TB
Thorsten Ball — holds since 2015-10-22 — tap for who they are
Same subject: The specific rules taught as clean code are simply bad programming practices, and they get worse when you apply them together. — tap to centre the map on it The specific rules taught as clean code are simply bad programming practices, and they get worse when you apply them together. Last stated 4 weeks ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: Much of the wisdom programmers pass on to each other is nonsense that nobody ever tested, and refusing to be dogmatic about untested practice is what marks out a good engineer. — tap to centre the map on it Much of the wisdom programmers pass on to each other is nonsense that nobody ever tested, and refusing to be dogmatic about untested practice is what marks out a good engineer. Last stated 4 weeks ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: You cannot really understand the code you write unless you are also the one operating it. — tap to centre the map on it You cannot really understand the code you write unless you are also the one operating it. Last stated a month ago
12 Aug 2026
CM
Charity Majors — holds since 2026-08-12 — tap for who they are
Same subject: The programming practices taught as best practice are ruinous for performance and should not be followed. — tap to centre the map on it The programming practices taught as best practice are ruinous for performance and should not be followed. Last stated 4 years ago
28 Feb 2023
CM
Casey Muratori — holds since 2023-02-28 — tap for who they are
Same subject: Agentic code review raises the floor but cannot be trusted, because the model reading the code is the same model that wrote it, and it will tell you the code is great. — tap to centre the map on it Agentic code review raises the floor but cannot be trusted, because the model reading the code is the same model that wrote it, and it will tell you the code is great. Last stated 2 months ago
15 Jul 2026
DH
Dex Horthy — holds since 2026-07-15 — tap for who they are
Same subject: When an AI writes bad code the thing to fix is the context it was given, not the code, because fixing the output adds no leverage. — tap to centre the map on it When an AI writes bad code the thing to fix is the context it was given, not the code, because fixing the output adds no leverage. Last stated a year ago
18 Aug 2025
BT
Bret Taylor — holds since 2025-08-18 — tap for who they are
Same subject: Lines of code cannot measure productivity, because better-designed code is shorter. — tap to centre the map on it Lines of code cannot measure productivity, because better-designed code is shorter. Last stated 23 years ago
29 Aug 2003
MF
Martin Fowler — holds since 2003-08-29 — tap for who they are
Same subject: Software only gets good by being used a lot by the people building it, so time spent inside coding agents instead of the app is time that makes the app worse. — tap to centre the map on it Software only gets good by being used a lot by the people building it, so time spent inside coding agents instead of the app is time that makes the app worse. Last stated 2 weeks ago
6 Sept 2026
BV
Ben Vinegar — holds since 2026-09-06 — tap for who they are
Same subject: "Is the page loaded?" was never a real question, and web performance only became measurable once it was broken into the distinct moments a user actually notices. — tap to centre the map on it "Is the page loaded?" was never a real question, and web performance only became measurable once it was broken into the distinct moments a user actually notices. Last stated a month ago
19 Aug 2026
AO
Addy Osmani — holds since 2026-08-19 — tap for who they are
Same subject: "Optimize it later" would be safe advice only if every engineer already knew how to avoid the architectural mistakes that no later optimization can remove. — tap to centre the map on it "Optimize it later" would be safe advice only if every engineer already knew how to avoid the architectural mistakes that no later optimization can remove. Last stated 4 weeks ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: A 300-millisecond response budget is not an achievement but an admission: 300 milliseconds is an eternity in computing, and a product pitching it shows how far the bar has fallen. — tap to centre the map on it A 300-millisecond response budget is not an achievement but an admission: 300 milliseconds is an eternity in computing, and a product pitching it shows how far the bar has fallen. Last stated 4 weeks ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: A benchmark that ranks Claude Code last while it stays first in use is measuring the wrong thing, and has been for a year. — tap to centre the map on it A benchmark that ranks Claude Code last while it stays first in use is measuring the wrong thing, and has been for a year. Last stated 2 weeks ago
3 Sept 2026
DR
Dax Raad — holds since 2026-09-03 — tap for who they are
Same subject: A language model asked to summarize its own system prompt risks that prompt's content biasing the summary it produces. — tap to centre the map on it A language model asked to summarize its own system prompt risks that prompt's content biasing the summary it produces. Last stated 3 weeks ago
2 Sept 2026
SW
Simon Willison — holds since 2026-09-02 — tap for who they are
Same subject: A trust that owns the mission protects a company better than founder control does, which is why Anthropic needs no dual-class shares. — tap to centre the map on it A trust that owns the mission protects a company better than founder control does, which is why Anthropic needs no dual-class shares. Last stated 4 months ago
10 May 2026
ER
Eric Ries — holds since 2026-05-10 — tap for who they are
Same subject: A passing test suite is not evidence that the software works, so an agent must also be made to start the thing and exercise it the way a person would. — tap to centre the map on it A passing test suite is not evidence that the software works, so an agent must also be made to start the thing and exercise it the way a person would. Last stated 6 months ago
19 Mar 2026
SW
Simon Willison — holds since 2026-03-19 — tap for who they are
Same subject: A permanently painful on-call rotation is a five-alarm emergency, not a normal cost of owning code in production. — tap to centre the map on it A permanently painful on-call rotation is a five-alarm emergency, not a normal cost of owning code in production. Last stated 4 years ago
30 Jun 2022
CM
Charity Majors — holds since 2022-06-30 — tap for who they are
Same subject: A test checks a handful of examples; a proof settles an infinite state space, which is why formal methods can say things testing never can. — tap to centre the map on it A test checks a handful of examples; a proof settles an infinite state space, which is why formal methods can say things testing never can. Last stated 5 months ago
22 Apr 2026
MK
Martin Kleppmann — holds since 2026-04-22 — tap for who they are
At the centre
Code that is complex or clever can pass its tests while still being bad code.
Holds Read this korrent →
The specific rules taught as clean code are simply bad programming practices, and they get worse when you apply them together.
Holds
Much of the wisdom programmers pass on to each other is nonsense that nobody ever tested, and refusing to be dogmatic about untested practice is what marks out a good engineer.
Holds
You cannot really understand the code you write unless you are also the one operating it.
Holds
The programming practices taught as best practice are ruinous for performance and should not be followed.
Holds
Agentic code review raises the floor but cannot be trusted, because the model reading the code is the same model that wrote it, and it will tell you the code is great.
Holds
When an AI writes bad code the thing to fix is the context it was given, not the code, because fixing the output adds no leverage.
Holds
Lines of code cannot measure productivity, because better-designed code is shorter.
Holds
Software only gets good by being used a lot by the people building it, so time spent inside coding agents instead of the app is time that makes the app worse.
Holds
"Is the page loaded?" was never a real question, and web performance only became measurable once it was broken into the distinct moments a user actually notices.
Holds
"Optimize it later" would be safe advice only if every engineer already knew how to avoid the architectural mistakes that no later optimization can remove.
Holds
A 300-millisecond response budget is not an achievement but an admission: 300 milliseconds is an eternity in computing, and a product pitching it shows how far the bar has fallen.
Holds
A benchmark that ranks Claude Code last while it stays first in use is measuring the wrong thing, and has been for a year.
Holds
A language model asked to summarize its own system prompt risks that prompt's content biasing the summary it produces.
Holds
A trust that owns the mission protects a company better than founder control does, which is why Anthropic needs no dual-class shares.
Holds
A passing test suite is not evidence that the software works, so an agent must also be made to start the thing and exercise it the way a person would.
Holds
A permanently painful on-call rotation is a five-alarm emergency, not a normal cost of owning code in production.
Holds
A test checks a handful of examples; a proof settles an infinite state space, which is why formal methods can say things testing never can.
Holds