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← There is one right way to build a type system, the way that gives you…
17 connected korrents · 16 moments from 21 Jan 2019 to 12 Sept 2026.
Everything filed under formal proof
formal proof
Everything filed under America
America
Everything filed under code generation
code generation
Everything filed under mathematics
mathematics
Everything filed under developer tools
developer tools
Everything filed under compilers
compilers
Everything filed under TypeScript
TypeScript
Everything filed under Ruby on Rails
Ruby on Rails 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: There is one right way to build a type system, the way that gives you mathematical proofs, and every other kind of type system is simply worse and should be rejected. There is one right way to build a type system, the way that gives you mathematical proofs, and every other kind of type system is simply worse and should be rejected. Last stated a year ago
30 Apr 2025
TS
Tim Sweeney — holds since 2025-04-30 — tap for who they are
Same subject: You cannot build good tooling without a type system — decent tooling perhaps, but nothing that scales to a large team. — tap to centre the map on it You cannot build good tooling without a type system — decent tooling perhaps, but nothing that scales to a large team. Last stated 5 months ago
13 May 2026
AH
Anders Hejlsberg — holds since 2026-05-13 — tap for who they are
Same subject: A language can only give you the feeling that compiling means working if it has a type system — that is where it all starts. — tap to centre the map on it A language can only give you the feeling that compiling means working if it has a type system — that is where it all starts. Last stated 5 months ago
20 May 2026
AR
Alice Ryhl — holds since 2026-05-20 — 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 3 months ago
29 Jul 2026
HW
Hillel Wayne — holds since 2026-07-29 — 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: Showing up for a fight on something so ultimately unresolvable as whether to use compiler-based type checking or not offers the thrill of hooliganism — tap to centre the map on it Showing up for a fight on something so ultimately unresolvable as whether to use compiler-based type checking or not offers the thrill of hooliganism Last stated 3 years ago
7 Sept 2023
DH
David Heinemeier Hansson — holds since 2023-09-07 — tap for who they are
Same subject: People adopted TypeScript for the tooling, not the types: an erasable type system is worth having because of the productivity the tooling built on it delivers. — tap to centre the map on it People adopted TypeScript for the tooling, not the types: an erasable type system is worth having because of the productivity the tooling built on it delivers. Last stated 5 months ago
13 May 2026
AH
Anders Hejlsberg — holds since 2026-05-13 — tap for who they are
Same subject: TypeScript's type annotations cost more in friction than they return in safety, and a front-end framework is better off written in plain JavaScript. — tap to centre the map on it TypeScript's type annotations cost more in friction than they return in safety, and a front-end framework is better off written in plain JavaScript. Last stated 3 years ago
6 Sept 2023
DH
David Heinemeier Hansson — holds since 2023-09-06 — tap for who they are
Same subject: Calling static typing the only way to build reliable systems is idiotic in the face of the evidence, starting with Shopify serving a million requests a second on Rails. — tap to centre the map on it Calling static typing the only way to build reliable systems is idiotic in the face of the evidence, starting with Shopify serving a million requests a second on Rails. Last stated a year ago
12 Jul 2025
DH
David Heinemeier Hansson — holds since 2025-07-12 — tap for who they are
Same subject: A persistently rising dividend yield eventually forces capital appreciation as the market rerates the stock. — tap to centre the map on it A persistently rising dividend yield eventually forces capital appreciation as the market rerates the stock. Last stated 8 months ago
3 Mar 2026
SB
Sanjay Bakshi — holds since 2026-03-03 — tap for who they are
Same subject: A proof and an explanation are different things, and a theorem can stay an unsolved expository problem long after it is proved. — tap to centre the map on it A proof and an explanation are different things, and a theorem can stay an unsolved expository problem long after it is proved. Last stated 4 months ago
30 Jun 2026
GS
Grant Sanderson — holds since 2026-06-30 — 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 4 months ago
30 Jun 2026
GS
Grant Sanderson — holds since 2026-06-30 — 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 3 months ago
27 Jul 2026
BC
Boris Cherny — holds since 2026-07-27 — tap for who they are
Same subject: Agents are the new compilers that compile intent into fast software. — tap to centre the map on it Agents are the new compilers that compile intent into fast software. Last stated a month ago
12 Sept 2026
GR
Guillermo Rauch — holds since 2026-09-12 — 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 3 months ago
26 Jul 2026
DH
David Heinemeier Hansson — holds since 2026-07-26 — tap for who they are
Same subject: America stopped building reactors because Three Mile Island was mismanaged as a public-relations event, not because anyone was harmed by it. — tap to centre the map on it America stopped building reactors because Three Mile Island was mismanaged as a public-relations event, not because anyone was harmed by it. Last stated 2 months ago
15 Aug 2026
IT
Isaiah Taylor — holds since 2026-08-15 — tap for who they are
Same subject: American manufacturing output cannot meaningfully rise without first building large amounts of new electricity generation. — tap to centre the map on it American manufacturing output cannot meaningfully rise without first building large amounts of new electricity generation. Last stated 2 years ago
6 Apr 2025
MH
Molson Hart — holds since 2025-04-06 — tap for who they are
Same subject: Americans have repeatedly overreacted drastically to real problems like DDT, Y2K, and nuclear power, swept up in fear after one vivid incident. — tap to centre the map on it Americans have repeatedly overreacted drastically to real problems like DDT, Y2K, and nuclear power, swept up in fear after one vivid incident. Last stated 2 months ago
1 Sept 2026
TC
Tyler Cowen — holds since 2026-09-01 — tap for who they are
At the centre
There is one right way to build a type system, the way that gives you mathematical proofs, and every other kind of type system is simply worse and should be rejected.
Holds Read this korrent →
You cannot build good tooling without a type system — decent tooling perhaps, but nothing that scales to a large team.
Holds
A language can only give you the feeling that compiling means working if it has a type system — that is where it all starts.
Holds
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
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
Showing up for a fight on something so ultimately unresolvable as whether to use compiler-based type checking or not offers the thrill of hooliganism
Holds
People adopted TypeScript for the tooling, not the types: an erasable type system is worth having because of the productivity the tooling built on it delivers.
Holds
TypeScript's type annotations cost more in friction than they return in safety, and a front-end framework is better off written in plain JavaScript.
Holds
Calling static typing the only way to build reliable systems is idiotic in the face of the evidence, starting with Shopify serving a million requests a second on Rails.
Holds
A persistently rising dividend yield eventually forces capital appreciation as the market rerates the stock.
Holds
A proof and an explanation are different things, and a theorem can stay an unsolved expository problem long after it is proved.
Holds
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
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
Agents are the new compilers that compile intent into fast software.
Holds
AI acceleration threatens 'less software': without the constraint of scarce hours, even 37signals will likely build too much.
Holds
America stopped building reactors because Three Mile Island was mismanaged as a public-relations event, not because anyone was harmed by it.
Holds
American manufacturing output cannot meaningfully rise without first building large amounts of new electricity generation.
Holds
Americans have repeatedly overreacted drastically to real problems like DDT, Y2K, and nuclear power, swept up in fear after one vivid incident.
Holds