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← The hard part of verification is not proving the code correct but working out what the specification should say.
17 connected korrents · 13 moments on record from 21 Jan 2019 to 1 Sept 2026.
Everything filed under LLMs
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AI writing
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code generation
Everything filed under formal proof
formal proof 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: The hard part of verification is not proving the code correct but working out what the specification should say. The hard part of verification is not proving the code correct but working out what the specification should say. Last stated 8 years ago
21 Jan 2019
HW
Hillel Wayne — holds since 2019-01-21 — tap for who they are
Same subject: There is a permanent trade-off in verification: an expressive language is hard to prove things about, and a language that is easy to prove things about is hard to write in. — tap to centre the map on it There is a permanent trade-off in verification: an expressive language is hard to prove things about, and a language that is easy to prove things about is hard to write in. Last stated 8 years ago
21 Jan 2019
HW
Hillel Wayne — holds since 2019-01-21 — tap for who they are
Same subject: Formal methods are not standard practice even in high-assurance software such as medical devices and aircraft. — tap to centre the map on it Formal methods are not standard practice even in high-assurance software such as medical devices and aircraft. Last stated 8 years ago
21 Jan 2019
HW
Hillel Wayne — holds since 2019-01-21 — tap for who they are
Same subject: Formalisation's real gift is the green check mark — knowing a hard proof is correct before you spend time on it — and every other field would kill for it. — tap to centre the map on it Formalisation's real gift is the green check mark — knowing a hard proof is correct before you spend time on it — and every other field would kill for it. Last stated 2 months ago
30 Jun 2026
GS
Grant Sanderson — holds since 2026-06-30 — tap for who they are
Same subject: Formal verification is about to become economical, because models are getting good enough at writing the proofs that humans no longer have to. — tap to centre the map on it Formal verification is about to become economical, because models are getting good enough at writing the proofs that humans no longer have to. Last stated 5 months ago
22 Apr 2026
MK
Martin Kleppmann — holds since 2026-04-22 — tap for who they are
Same subject: Software is not less rigorous than traditional engineering; its record-keeping and automated verification are better than most of that field's. — tap to centre the map on it Software is not less rigorous than traditional engineering; its record-keeping and automated verification are better than most of that field's. Last stated 6 years ago
20 Jan 2021
HW
Hillel Wayne — holds since 2021-01-20 — tap for who they are
Same subject: Engineers are sceptical of formal methods because they were burned by CASE and UML, sold as miracle solutions and imposed on them regardless of fit. — tap to centre the map on it Engineers are sceptical of formal methods because they were burned by CASE and UML, sold as miracle solutions and imposed on them regardless of fit. Last stated a month ago
29 Jul 2026
HW
Hillel Wayne — holds since 2026-07-29 — tap for who they are
Same subject: Formal methods are not used everywhere because for most real problems writing down what the function should do is itself a nightmare, and a program that is right ninety-nine per cent of the time is good enough. — tap to centre the map on it Formal methods are not used everywhere because for most real problems writing down what the function should do is itself a nightmare, and a program that is right ninety-nine per cent of the time is good enough. Last stated a month ago
29 Jul 2026
HW
Hillel Wayne — holds since 2026-07-29 — tap for who they are
Same subject: Full formal verification is a waste of money for most software: near-perfect is reachable with ordinary techniques at a fraction of the cost. — tap to centre the map on it Full formal verification is a waste of money for most software: near-perfect is reachable with ordinary techniques at a fraction of the cost. Last stated 8 years ago
21 Jan 2019
HW
Hillel Wayne — holds since 2019-01-21 — tap for who they are
Same subject: A language model is no substitute for a well-specified conventional algorithm, so it cannot simply be dropped into a complex problem and trusted. — tap to centre the map on it A language model is no substitute for a well-specified conventional algorithm, so it cannot simply be dropped into a complex problem and trusted. Last stated a year ago
7 Jun 2025
GM
Gary Marcus — holds since 2025-06-07 — tap for who they are
Same subject: A language model is not using language at all, because language requires an intention to communicate. — tap to centre the map on it A language model is not using language at all, because language requires an intention to communicate. Last stated 2 years ago
31 Aug 2024
TC
Ted Chiang — holds since 2024-08-31 — tap for who they are
Same subject: A language model's apparent mind is mostly our own bias: it predicts text, and leverages our evolved habit of attributing intentionality to anything that acts human. — tap to centre the map on it A language model's apparent mind is mostly our own bias: it predicts text, and leverages our evolved habit of attributing intentionality to anything that acts human. Last stated 2 years ago
22 Apr 2024
SC
Sean Carroll — holds since 2024-04-22 — 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 a month ago
26 Jul 2026
DH
David Heinemeier Hansson — holds since 2026-07-26 — tap for who they are
Same subject: Code and files generated by tools are pollution: hand-writing them is worth the effort because the bloat slows everything down for everyone. — tap to centre the map on it Code and files generated by tools are pollution: hand-writing them is worth the effort because the bloat slows everything down for everyone. Last stated 7 years ago
15 Oct 2019
DS
Derek Sivers — holds since 2019-10-15 — tap for who they are
Same subject: Every time software has become easier to create, the world has created exponentially more of it, and this time will be no exception. — tap to centre the map on it Every time software has become easier to create, the world has created exponentially more of it, and this time will be no exception. Last stated 3 weeks ago
19 Aug 2026
AO
Addy Osmani — holds since 2026-08-19 — tap for who they are
Same subject: A stream of AI-written papers with any error rate at all becomes insufferable, because finding the error costs more than the paper is worth even at ninety-nine percent. — tap to centre the map on it A stream of AI-written papers with any error rate at all becomes insufferable, because finding the error costs more than the paper is worth even at ninety-nine percent. Last stated 2 months ago
30 Jun 2026
GS
Grant Sanderson — holds since 2026-06-30 — tap for who they are
Same subject: AI-generated writing tends to repeat the same themes, names, and underlying ideas across different outputs. — tap to centre the map on it AI-generated writing tends to repeat the same themes, names, and underlying ideas across different outputs. Last stated a week ago
31 Aug 2026
EM
Ethan Mollick — holds since 2026-08-31 — tap for who they are
Same subject: AI-written prose is an inferior read because a model emits a statistical average -- code's audience is a machine, writing's audience is people. — tap to centre the map on it AI-written prose is an inferior read because a model emits a statistical average -- code's audience is a machine, writing's audience is people. Last stated a week ago
1 Sept 2026
GO
Gergely Orosz — holds since 2026-09-01 — tap for who they are
At the centre
The hard part of verification is not proving the code correct but working out what the specification should say.
Holds HW Hillel WayneRead this korrent →
There is a permanent trade-off in verification: an expressive language is hard to prove things about, and a language that is easy to prove things about is hard to write in.
Holds HW Hillel Wayne
Formal methods are not standard practice even in high-assurance software such as medical devices and aircraft.
Holds HW Hillel Wayne
Formalisation's real gift is the green check mark — knowing a hard proof is correct before you spend time on it — and every other field would kill for it.
Holds GS Grant Sanderson
Formal verification is about to become economical, because models are getting good enough at writing the proofs that humans no longer have to.
Holds MK Martin Kleppmann
Software is not less rigorous than traditional engineering; its record-keeping and automated verification are better than most of that field's.
Holds HW Hillel Wayne
Engineers are sceptical of formal methods because they were burned by CASE and UML, sold as miracle solutions and imposed on them regardless of fit.
Holds HW Hillel Wayne
Formal methods are not used everywhere because for most real problems writing down what the function should do is itself a nightmare, and a program that is right ninety-nine per cent of the time is good enough.
Holds HW Hillel Wayne
Full formal verification is a waste of money for most software: near-perfect is reachable with ordinary techniques at a fraction of the cost.
Holds HW Hillel Wayne
A language model is no substitute for a well-specified conventional algorithm, so it cannot simply be dropped into a complex problem and trusted.
Holds GM Gary Marcus
A language model is not using language at all, because language requires an intention to communicate.
Holds TC Ted Chiang
A language model's apparent mind is mostly our own bias: it predicts text, and leverages our evolved habit of attributing intentionality to anything that acts human.
Holds SC Sean Carroll
AI acceleration threatens 'less software': without the constraint of scarce hours, even 37signals will likely build too much.
Holds
Code and files generated by tools are pollution: hand-writing them is worth the effort because the bloat slows everything down for everyone.
Holds
Every time software has become easier to create, the world has created exponentially more of it, and this time will be no exception.
Holds AO Addy Osmani
A stream of AI-written papers with any error rate at all becomes insufferable, because finding the error costs more than the paper is worth even at ninety-nine percent.
Holds GS Grant Sanderson
AI-generated writing tends to repeat the same themes, names, and underlying ideas across different outputs.
Holds EM Ethan Mollick
AI-written prose is an inferior read because a model emits a statistical average -- code's audience is a machine, writing's audience is people.
Holds