Hacker News on Sunday, 23 November 2025

Stories posted this day, by points. Rank history starts with the October 2026 rebuild.

Screenshot of emilysneddon.com: Fran Sans – font inspired by San Francisco light rail displays

Fran Sans – font inspired by San Francisco light rail displays (emilysneddon.com)

1086 points by ChrisArchitect 11 months ago | 130 comments

Emily Sneddon's essay on Fran Sans, a typeface inspired by the segmented destination displays on San Francisco Muni light rail trains.

typography fonts fran-sans san-francisco

Screenshot of jenn.site: After my dad died, we found the love letters

After my dad died, we found the love letters (jenn.site)

854 points by eatitraw 11 months ago | 389 comments

A personal blog essay on Jenneral HQ about discovering love letters among the author's late father's belongings and reflecting on her parents' arranged marriage.

personal-essay grief family love-letters

Screenshot of sacbear.com: A monopoly ISP refuses to fix upstream infrastructure

A monopoly ISP refuses to fix upstream infrastructure (sacbear.com)

574 points by vedmed 11 months ago | 290 comments

A Sacramento Bear article about a customer's struggle with Xfinity, a monopoly ISP that won't fix faulty upstream cable infrastructure causing internet problems.

xfinity comcast isp broadband

Screenshot of reuters.com: Meta buried 'causal' evidence of social media harm, US court filings allege

Meta buried 'causal' evidence of social media harm, US court filings allege (reuters.com)

562 points by pseudolus 11 months ago | 224 comments

Reuters article on US court filings alleging Meta buried internal causal evidence that its social media platforms harm users; page showed a captcha verification.

meta social-media mental-health litigation

Screenshot of gist.github.com: Native Secure Enclave backed SSH keys on macOS

Native Secure Enclave backed SSH keys on macOS (gist.github.com)

436 points by arianvanp 11 months ago | 181 comments

A GitHub Gist explaining how macOS Tahoe can natively generate and use Secure Enclave-backed SSH keys, replacing tools like Secretive.

ssh secure-enclave macos apple

Screenshot of nytimes.com: Iowa City made its buses free. Traffic cleared, and so did the air

Iowa City made its buses free. Traffic cleared, and so did the air (nytimes.com)

391 points by bookofjoe 11 months ago | 448 comments

New York Times article on Iowa City making its buses fare-free and the resulting drop in traffic and improved air quality; the capture shows a bot-block page.

fare-free-transit public-transit iowa-city air-quality

Screenshot of benjoffe.com: A Fast 64-Bit Date Algorithm (30–40% faster by counting dates backwards)

A Fast 64-Bit Date Algorithm (30–40% faster by counting dates backwards)(benjoffe.com)

373 points by benjoffe 11 months ago | 87 comments

Ben Joffe's article presenting a 64-bit date conversion algorithm that counts years backwards and needs only 4 multiplications, with an open-source C++ implementation.

date-algorithms cpp performance-optimization calendar-conversion

Screenshot of makingsoftware.com: Shaders: How to draw high fidelity graphics with just x and y coordinates

Shaders: How to draw high fidelity graphics with just x and y coordinates (makingsoftware.com)

370 points by Garbage 11 months ago | 79 comments

A chapter from Making Software explaining how shaders draw high-fidelity graphics using only x and y pixel coordinates; the capture shows a Vercel security checkpoint.

shaders computer-graphics gpu glsl

Screenshot of microcad.xyz: µcad: New open source programming language that can generate 2D sketches and 3D

µcad: New open source programming language that can generate 2D sketches and 3D (microcad.xyz)

365 points by todsacerdoti 11 months ago | 119 comments

Homepage and blog of µcad (Microcad), a new open source programming language for generating 2D sketches and 3D objects.

microcad cad programming-languages 3d-modeling

Screenshot of time.com: Court filings allege Meta downplayed risks to children and misled the public

Court filings allege Meta downplayed risks to children and misled the public (time.com)

347 points by binning 11 months ago | 146 comments

TIME article reporting on court filings alleging Meta downplayed risks its platforms posed to children and misled the public.

meta child-safety social-media lawsuit

Screenshot of oneusefulthing.org: Three Years from GPT-3 to Gemini 3

Three Years from GPT-3 to Gemini 3 (oneusefulthing.org)

338 points by JumpCrisscross 11 months ago | 270 comments

Ethan Mollick's One Useful Thing Substack post reviewing Google's Gemini 3 and reflecting on AI progress in the three years since GPT-3 and ChatGPT.

gemini-3 gpt-3 google openai

Screenshot of hindustantimes.com: X's new country-of-origin feature reveals many 'US' accounts to be foreign-run

X's new country-of-origin feature reveals many 'US' accounts to be foreign-run (hindustantimes.com)

337 points by ourmandave 11 months ago | 182 comments

Hindustan Times news article on X's new feature showing account country of origin, revealing many purportedly US political accounts are run from abroad.

x-twitter social-media disinformation elon-musk