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← Buggy code usually causes outright test failures rather than being…
17 connected korrents · 17 moments on record from 22 Oct 2015 to 19 Sept 2026.
Everything filed under code generation
code generation
Everything filed under software quality
software quality
Everything filed under vibe coding
vibe coding
Everything filed under Anthropic
Anthropic
Everything filed under coding agents
coding agents 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: Buggy code usually causes outright test failures rather than being silently exercised inside tests that still pass. Buggy code usually causes outright test failures rather than being silently exercised inside tests that still pass. Last stated a year ago
25 Apr 2025
RC
Russ Cox — holds since 2025-04-25 — tap for who they are
Same subject: Code that is complex or clever can pass its tests while still being bad code. — tap to centre the map on it 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: 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: Most software bugs will not be coding bugs but bugs from asking for the wrong thing. — tap to centre the map on it Most software bugs will not be coding bugs but bugs from asking for the wrong thing. Last stated 2 days ago
19 Sept 2026
TB
Thorsten Ball — holds since 2026-09-19 — tap for who they are
Same subject: Comparing code coverage between passing and failing test runs is a cheap, effective way to localize a bug quickly. — tap to centre the map on it Comparing code coverage between passing and failing test runs is a cheap, effective way to localize a bug quickly. Last stated a year ago
25 Apr 2025
RC
Russ Cox — holds since 2025-04-25 — tap for who they are
Same subject: Tests written by a model in the same context as the change are what find the bugs; the automated tests left behind are the lesser product. — tap to centre the map on it Tests written by a model in the same context as the change are what find the bugs; the automated tests left behind are the lesser product. Last stated a year ago
25 Aug 2025
PS
Peter Steinberger — holds since 2025-08-25 — tap for who they are
Same subject: Agent-written code that runs and passes its tests is not enough: security, maintainability and being able to roll it back still need humans in the loop. — tap to centre the map on it Agent-written code that runs and passes its tests is not enough: security, maintainability and being able to roll it back still need humans in the loop. Last stated 3 months ago
7 Jun 2026
TF
Tony Fadell — holds since 2026-06-07 — tap for who they are
Same subject: The code today’s models and agents write is very hard to follow: you get better performance without knowing why, and no way to fix it when it breaks. — tap to centre the map on it The code today’s models and agents write is very hard to follow: you get better performance without knowing why, and no way to fix it when it breaks. Last stated 2 months ago
19 Jul 2026
ES
Elizabeth Stone — holds since 2026-07-19 — tap for who they are
Same subject: If you are not going to read the generated code, what you need is conformance testing: proof that it performs within the boundaries of the code it replaced. — tap to centre the map on it If you are not going to read the generated code, what you need is conformance testing: proof that it performs within the boundaries of the code it replaced. Last stated a month ago
12 Aug 2026
CM
Charity Majors — holds since 2026-08-12 — tap for who they are
Same subject: A model can now port essentially any codebase from one programming language to another, work that used to take a team over a year. — tap to centre the map on it A model can now port essentially any codebase from one programming language to another, work that used to take a team over a year. Last stated 2 months ago
27 Jul 2026
BC
Boris Cherny — holds since 2026-07-27 — tap for who they are
Same subject: AI acceleration threatens 'less software': without the constraint of scarce hours, even 37signals will likely build too much. — tap to centre the map on it AI acceleration threatens 'less software': without the constraint of scarce hours, even 37signals will likely build too much. Last stated 2 months ago
26 Jul 2026
DH
David Heinemeier Hansson — holds since 2026-07-26 — tap for who they are
Same subject: AI has made it cheap to build the features that were never worth building, so shipping a new feature every day can make a product worse rather than better. — tap to centre the map on it AI has made it cheap to build the features that were never worth building, so shipping a new feature every day can make a product worse rather than better. Last stated 3 months ago
24 Jun 2026
NE
NeetCode — holds since 2026-06-24 — 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 3 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 person at maximum vibe-coding speed has about three productive hours a day, and a company that will not let them stop there is going to break. — tap to centre the map on it A person at maximum vibe-coding speed has about three productive hours a day, and a company that will not let them stop there is going to break. Last stated 6 months ago
11 Mar 2026
SY
Steve Yegge — holds since 2026-03-11 — tap for who they are
Same subject: A sense of achievement in software survives writing almost none of the code yourself. — tap to centre the map on it A sense of achievement in software survives writing almost none of the code yourself. Last stated 4 weeks ago
26 Aug 2026
DH
David Heinemeier Hansson — holds since 2026-08-26 — tap for who they are
Same subject: AI should be used as a failure machine that tests many ideas cheaply, not as a way to build one idea faster. — tap to centre the map on it AI should be used as a failure machine that tests many ideas cheaply, not as a way to build one idea faster. Last stated 3 months ago
14 Jun 2026
MP
Mark Pincus — holds since 2026-06-14 — tap for who they are
At the centre
Buggy code usually causes outright test failures rather than being silently exercised inside tests that still pass.
Holds Read this korrent →
Code that is complex or clever can pass its tests while still being bad code.
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
Most software bugs will not be coding bugs but bugs from asking for the wrong thing.
Holds
Comparing code coverage between passing and failing test runs is a cheap, effective way to localize a bug quickly.
Holds
Tests written by a model in the same context as the change are what find the bugs; the automated tests left behind are the lesser product.
Holds
Agent-written code that runs and passes its tests is not enough: security, maintainability and being able to roll it back still need humans in the loop.
Holds
The code today’s models and agents write is very hard to follow: you get better performance without knowing why, and no way to fix it when it breaks.
Holds
If you are not going to read the generated code, what you need is conformance testing: proof that it performs within the boundaries of the code it replaced.
Holds
A model can now port essentially any codebase from one programming language to another, work that used to take a team over a year.
Holds
AI acceleration threatens 'less software': without the constraint of scarce hours, even 37signals will likely build too much.
Holds
AI has made it cheap to build the features that were never worth building, so shipping a new feature every day can make a product worse rather than better.
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 person at maximum vibe-coding speed has about three productive hours a day, and a company that will not let them stop there is going to break.
Holds
A sense of achievement in software survives writing almost none of the code yourself.
Holds
AI should be used as a failure machine that tests many ideas cheaply, not as a way to build one idea faster.
Holds