top 50% hacker news stories for 2025-12-25

We invited a man into our home at Christmas and he stayed with us for 45 years

https://www.bbc.co.uk/news/articles/cdxwllqz1l0o

2 months ago

1178 upvotes – 282 comments

Maybe the default settings are too high

https://www.raptitude.com/2025/12/maybe-the-default-settings-are-too-high/

2 months ago

937 upvotes – 321 comments

Ruby 4.0.0

https://www.ruby-lang.org/en/news/2025/12/25/ruby-4-0-0-released/

2 months ago

758 upvotes – 191 comments

I sell onions on the Internet (2019)

https://www.deepsouthventures.com/i-sell-onions-on-the-internet/

2 months ago

496 upvotes – 174 comments

Alzheimer’s disease can be reversed in animal models? Study

https://case.edu/news/new-study-shows-alzheimers-disease-can-be-reversed-achieve-full-neurological-recovery-not-just-prevented-or-slowed-animal-models

2 months ago

492 upvotes – 123 comments

Python 3.15’s interpreter for Windows x86-64 should hopefully be 15% faster

https://fidget-spinner.github.io/posts/no-longer-sorry.html

2 months ago

400 upvotes – 149 comments

Fahrplan – 39C3

https://fahrplan.events.ccc.de/congress/2025/fahrplan/

2 months ago

386 upvotes – 223 comments

Mattermost restricted access to old messages after 10000 limit is reached

https://github.com/mattermost/mattermost/issues/34271

2 months ago

385 upvotes – 250 comments

Who Watches the Waymos? I do [video]

https://www.youtube.com/watch?v=oYU2hAbx_Fc

2 months ago

299 upvotes – 119 comments

Ask HN: What skills do you want to develop or improve in 2026?

https://news.ycombinator.com/item?id=46385197

2 months ago

272 upvotes – 416 comments

Asahi Linux with Sway on the MacBook Air M2 (2024)

https://daniel.lawrence.lu/blog/2024-12-01-asahi-linux-with-sway-on-the-macbook-air-m2/

2 months ago

263 upvotes – 318 comments

Google is 'gradually rolling out' option to change your gmail.com address

https://9to5google.com/2025/12/24/google-change-gmail-addresses/

2 months ago

252 upvotes – 234 comments

Free Software Foundation receives historic private donations

https://www.fsf.org/news/free-software-foundation-receives-historic-private-donations

2 months ago

221 upvotes – 43 comments

Show HN: One clean, developer-focused page for every Unicode symbol

https://fontgenerator.design/symbols

2 months ago

198 upvotes – 82 comments

Salesforce regrets firing 4000 experienced staff and replacing them with AI

https://maarthandam.com/2025/12/25/salesforce-regrets-firing-4000-staff-ai/

2 months ago

193 upvotes – 121 comments

UBlockOrigin and UBlacklist AI Blocklist

https://github.com/laylavish/uBlockOrigin-HUGE-AI-Blocklist

2 months ago

135 upvotes – 67 comments

Incremental Backups of Gmail Takeouts

https://baecher.dev/stdout/incremental-backups-of-gmail-takeouts/

2 months ago

131 upvotes – 62 comments

Critical vulnerability in LangChain – CVE-2025-68664

https://cyata.ai/blog/langgrinch-langchain-core-cve-2025-68664/

2 months ago

131 upvotes – 91 comments

We "solved" C10K years ago yet we keep reinventing it (2003)

https://www.kegel.com/c10k.html

2 months ago

108 upvotes – 86 comments

URL Pattern API

https://developer.mozilla.org/en-US/docs/Web/API/URL_Pattern_API

2 months ago

90 upvotes – 17 comments

Librarians tired of being accused of hiding secret books that were made up by AI

https://gizmodo.com/librarians-arent-hiding-secret-books-from-you-that-only-ai-knows-about-2000698176

2 months ago

88 upvotes – 83 comments

Show HN: Aroma: Every TCP Proxy Is Detectable with RTT Fingerprinting

https://github.com/Sakura-sx/Aroma

2 months ago

86 upvotes – 54 comments

Python Applied Mathematics Labs

https://labs.acme.byu.edu/Pages/intro.html

2 months ago

85 upvotes – 2 comments

Silicon Valley's tone-deaf take on the AI backlash will matter in 2026

https://fortune.com/2025/12/23/silicon-valleys-tone-deaf-take-on-the-ai-backlash-will-matter-in-2026/

2 months ago

83 upvotes – 32 comments

No Longer Evil – new life for dead/outdated Nest Generation 1 and 2 thermostats

https://nolongerevil.com/

2 months ago

80 upvotes – 8 comments

The next-gen mainboard designed with amigaos4 and morphos in mind

https://mirari.vitasys.nl/our-story/

2 months ago

79 upvotes – 19 comments

Microsoft denies rewriting Windows 11 in Rust using AI

https://www.windowslatest.com/2025/12/24/microsoft-denies-rewriting-windows-11-using-ai-after-an-employees-one-engineer-one-month-one-million-code-post-on-linkedin-causes-outrage/

2 months ago

77 upvotes – 110 comments

Memory Safety

https://www.memorysafety.org/

2 months ago

76 upvotes – 145 comments

Vitest Browser Mode Guide

https://howtotestfrontend.com/resources/vitest-browser-mode-guide-and-setup-info

2 months ago

72 upvotes – 8 comments

Quantum Error Correction Goes FOOM

https://algassert.com/post/2503

2 months ago

70 upvotes – 24 comments

Line scan camera image processing

https://daniel.lawrence.lu/blog/2025-09-21-line-scan-camera-image-processing/

2 months ago

69 upvotes – 4 comments

Ask HN: What is the international distribution/statistics of HN visitors?

https://news.ycombinator.com/item?id=46385406

2 months ago

63 upvotes – 28 comments

Self-referencing Page Tables for the x86-Architecture

https://0l.de/blog/2015/01/bachelor-thesis-abstract/

2 months ago

62 upvotes – 10 comments

Sad times StackOverflow takes down all its physical servers

https://stackoverflow.blog/2025/12/24/the-great-unracking-saying-goodbye-to-the-servers-at-our-physical-datacenter/

2 months ago

62 upvotes – 11 comments
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