Hackers' Pub is a place for software engineers to share their knowledge and experience with each other. It's also an ActivityPub-enabled social network, so you can follow your favorite hackers in the fediverse and get their latest posts in your feed.
PSA: Evan Chen’s “Infinitely Large Napkin” has gotta be one of the most important math books out there. It makes higher math incredibly accessible.
I can’t overstate how much it enabled me to do things that would otherwise only be reachable through years of studying pure mathematics at university.
https://web.evanchen.cc/napkin.html
The Napkin project is a personal exposition project of mine aimed at making higher math accessible to high school students. The philosophy is stated in the preamble:
I’ll be eating a quick lunch with some friends of mine who are still in high school. They’ll ask me what I’ve been up to the last few weeks, and I’ll tell them that I’ve been learning category theory. They’ll ask me what category theory is about. I tell them it’s about abstracting things by looking at just the structure-preserving morphisms between them, rather than the objects themselves. I’ll try to give them the standard example Gp, but then I’ll realize that they don’t know what a homomorphism is. So then I’ll start trying to explain what a homomorphism is, but then I’ll remember that they haven’t learned what a group is. So then I’ll start trying to explain what a group is, but by the time I finish writing the group axioms on my napkin, they’ve already forgotten why I was talking about groups in the first place. And then it’s 1PM, people need to go places, and I can’t help but think:
Man, if I had forty hours instead of forty minutes, I bet I could actually have explained this all.
This book is my attempt at those forty hours.
으어어어
Hootsuite signing a contract with ICE in this environment is profoundly shameful.
They know very well their social media monitoring tools will be misused to attempt to punish ICE's targets and citizen protestors.
We deleted our account with them, others should too!
I will match $1000 in donations to Immigrant Law Center of Minnesota - they are on the ground helping families of those abducted by ICE.
Donate and share your receipt here.
this whole GenAI craze is happening at an interesting time for me, because i look at this also through the lens of "maybe, i am just getting old. maybe, i am just an old guy yelling at clouds. maybe, this is how the older programmers felt when my generation showed up with their SPAs and mobile first apps."
it's disorienting, at times.
I say: "let them burn".
According to tea-leaves-reader Gartner, AI data is rapidly becoming a classic Garbage In/Garbage Out (GIGO) problem for users.
https://www.gartner.com/en/newsroom/press-releases/2026-01-21-gartner-predicts-by-2028-50-percent-of-organizations-will-adopt-zero-trust-data-governance-as-unverified-ai-generated-data-grows
shall I go to FOSDEM this year 
#fosdem #fosdem2026
進みめちゃくちゃ遅いと思ったけど、CBT1と正式版の同じ場面のスクショ比べたらCBT1の時の方が圧倒的に電線と置いてる機械の数が多かったので正式版はまだ全然早いペースかも。
この後の武陵はかなり凄いらしいので……明日行くぞぉー！多分！
Saw a bunch of people worried about the TikTok US privacy policy, specifically the long section of data they're collecting. This TechCrunch article has a good overview - that part's not new, and the specific wording is because of California's privacy law. A bunch of other social media apps have exactly the same stuff in their terms. https://techcrunch.com/2026/01/23/tiktok-users-freak-out-over-apps-immigration-status-collection-heres-what-it-means/
Looks like this specific disclosure has been in their privacy policy since at least 2024, maybe earlier.
TikTok users freak out over app's 'immigration status' collection -- here's what it means | TechCrunch
TikTok users are freaking out over a mention of "immigration status" data collection, but lawyers explain the disclosure is related to state privacy laws.
techcrunch.com · TechCrunch
Link author: 
Sarah Perez 💙@Sarahp@mastodon.social
After years of work, the first chapter of my slice-of-life, gag manga Go! Go! Gris! is now available! ✨ Read it for free here: gogogris.com/read/chapter-1 Or check out some pages below 👇 (1/6)
듣자하니 토마호크 같은 미사일에 은이 최소 10-20킬로그램 들어간다던데 배터리에 은을 쓴다고... 아마 전쟁도 돈없어서 못할듯 ㅋㅋㅋ 신뢰도 때문에 그렇다던데 지금 은 대체하는 기술 개발하거나 가지고 있는 회사들은 돈을 쓸어담겠구나 싶다
역사적으로 보니까 이런적이 거의 없더만... 천연가스는 날씨탓이라고 쳐도 금속 원자재 관련쪽이 이러면 아마 모든 물가가 더 비싸질듯;; 뭐가 더 일어나도 전혀 이상하지 않을듯...
St Cuthbert's Cave, a spectacular south-facing location on the Kyloe Hills in Northumberland, between Belford and Lowick, is a place steeped in legend.
In the late 9th century, the Anglo-Saxon Chronicle, records that as the Danes ravaged Lindisfarne, Eardulf, the bishop of Lindisfarne, along with abbot Eadred and the rest of the early Christian community were forced to flee the island, taking the body of their beloved Cuthbert to seek a place of safety and sanctuary.
This natural sandstone cave has long been associated with a legend as being a place, a few miles in from the coast, where they rested and took shelter.
However, another legend suggest it was a place where Cuthbert himself lived as an anchorite hermit, before moving to the Farne Islands – maybe it was both!
The cave, formed of overhanging rock and sufficiently large to provide shelter for a small group, are in the care of the National Trust.
#england #northumberland #nationaltrust #countryside #photography
We're asking people to reach out to us, instead of sharing the npm browser link here. We started vitest in private, but open to anyone who wants to build with us. Elk and e18e started similarly. When we made each public, a tight-knit community was already driving the project, ready to welcome others
there's a lot of things both democrats and republicans are way off about, but i think guns might be the only example of republicans being actively better lol, which is honestly really ironic considering people should have guns precisely to defend themselves from people like republicans (fascists)
We knew this was coming, but now the clock is running. From Privacy International:
"Yesterday the Trump Administration announced a proposed change in policy for travellers to the U.S. It applies to the powers of data collection by the Customs and Border Police (CBP)."
"If the proposed changes are adopted after the 60-day consultation, then millions of travellers to the U.S. will be forced to use a U.S. government mobile phone app, submit their social media from the last five years and email addresses used in the last ten years, including of family members. They’re also proposing the collection of DNA."
PI linked to and summarized a Federal Register entry describing the proposed requirements:
-All visitors must submit ‘their social media from the last 5 years’
-ESTA (Electronic System for Travel Authorization) applications will include ‘high value data fields’, ‘when feasible’
‘telephone numbers used in the last five years’
-‘email addresses used in the last ten years’
-‘family number telephone numbers (sic) used in the last five years’
-biometrics – face, fingerprint, DNA, and iris
-business telephone numbers used in the last five years
-business email addresses used in the last ten years.
The Federal Register entry says comments are encouraged and
must be submitted (no later than February 9, 2026) to be assured of consideration.
Federal Register entry: https://www.govinfo.gov/content/pkg/FR-2025-12-10/pdf/2025-22461.pdf
listen you can make fun of gastown all you want but giving up on everything you loved about your craft is the future of your craft so if you don't get on board right now you are missing out
France Aiming to Replace Zoom, Google Meet, Microsoft Teams, etc.
Link: https://twitter.com/lellouchenico/status/2015775970330882319
Discussion: https://news.ycombinator.com/item?id=46767668
We're asking people to reach out to us, instead of sharing the npm browser link here. We started vitest in private, but open to anyone who wants to build with us. Elk and e18e started similarly. When we made each public, a tight-knit community was already driving the project, ready to welcome others
春節將近，中國政府再度警告中國人民日本很危險、有針對中國人的犯罪要求民眾不要去日本。
關於這則新聞有趣的點在於新聞裡的民眾留言，日本是個民主國家，言論也自由，但我從未看過6500則留言幾乎9成的人同意中國這個呼籲。
感謝中國、希望中國不要只是警告中國人別到日本而是百分之百禁止、現在已經超過能負擔的遊客容許量禁止剛好、還有韓國中國遊客就拜託你們了的留言也很多。
我想這是日本人對中國政府好感度最高的一則新聞😆
新聞連結
https://news.yahoo.co.jp/articles/dca59ae7cd64979f12adb31826484f3e3cc8cef1
Manchester calling! 📣
Why not come along to our meet-up on Wednesday to find out the latest on our campaigns and get to know each other?
🗓️ Wednesday 28 January
🕕 6:00–8:00pm GMT
📍 The Peer Hat, M1 1BE, UK
Sign up now ⬇️
https://www.openrightsgroup.org/events/org-manchester-meet-up-2/
Please contact your representatives fellow Americans 
Today I'll explain how zero-knowledge proofs work. Also: Microsoft gives up BitLocker keys; FL mulls age verification; UK may ban VPNs; more bad browser addons; ads-based data leakage; cops fail to redact private Flock data; FTC limits GM car data; more!
https://podcast.firewallsdontstopdragons.com/2026/01/26/zero-knowledge-proofs/
RE: https://mstdn.social/@smutmag/115959378882920490
Somewhat tangential to her main point, obviously, but if only we could simply talk to Republicans and explain these experiences and truths. But the issue is not actually immigration, that’s always been a mask, and honestly most Republicans know this in some level. The issue is not, nor has it ever been, immigration. It’s racism and the protection of whiteness. That’s why immigration is accepted as an issue even in liberal circles. Our liberal presidents have been deporting Black and brown immigrants in droves.
Don't Be Email
#TikTok Is Now Collecting Even More Data About Its Users. Here Are the 3 Biggest Changes
エンドフィールド
冗談抜きで
って感じで進めてて情報の波に押しつぶされてる
でも楽しんではいる
오늘 본묘의 탄신일이니라 마음 한 번 찍고 가거라 행운이 깃들 것이다
Surveillance capitalism isn't harmless.
Surveillance capitalism is mass surveillance.
if risc-v is so good why isn't there risc-w
@cwebberChristine Lemmer-Webber personally waiting for risc-uwu
🇮🇷 Update: Brief returns of internet access are driving spikes in Snowflake usage. Please help us run more proxies if you can. ❄️ snowflake.torproject.org
The easiest ways to run Snowflake is by using Tor Browser, Orbot, or installing the browser add on in your current browser. Extra capacity helps people in Iran stay connected when the network comes back online.
@cwebberChristine Lemmer-Webber risc-heads will tell you it should be "risc-vi", which means ultranerds will ask for the obvious "risc-emacs"
What began as a joke got a little too real. So I shut it down for good.
https://www.404media.co/i-replaced-my-friends-with-ai-because-they-wont-play-tarkov-with-me/
ooh yeah shit this project sounds right up my alley
*sees Claude pushing commits to git repo*
*closes tab*
If you are planning ahead for RubyConf 2026, here is an early look at what to expect at Red Rock. Comfortable rooms, food options, flexible work spaces, and quick access to Red Rock Canyon make it a great environment for learning and connection. A full guide is coming in February.
spacemanks
Are there any "case studies" of whole communities moving to the fediverse, similar to the Forkiverse?
I'm thinking about writing a version of my article https://stefanbohacek.com/blog/fediverse-an-overview-for-government-agencies/ and aim it at community organizers.
@diazonaDavid Zaslavsky @cwebberChristine Lemmer-Webber I mean I'm not claiming originality https://xkcd.com/456/
if risc-v is so good why isn't there risc-w
@cwebberChristine Lemmer-Webber That's twice the risc!
if risc-v is so good why isn't there risc-w
@cwebberChristine Lemmer-Webber the problem is, once anyone starts working on risc-vi they're unable to quit
#TikTok Is Now Collecting Even More Data About Its Users. Here Are the 3 Biggest Changes
Broken since 2022
if risc-v is so good why isn't there risc-w
@cwebberChristine Lemmer-Webber risc-heads will tell you it should be "risc-vi", which means ultranerds will ask for the obvious "risc-emacs"
The devastating winter storm in the mainland US has knocked off the air eight FM radio stations and one AM broadcaster, according to the FCC.
It begins 🚀
Yesterday loops.video seen a spike in new account registrations, likely due to the TikTok ownership and policy changes.
Come join us, our community is thriving!
if risc-v is so good why isn't there risc-w
✧✦Catherine✦✧
Chris Siebenmann
Em 
🛡️ 
Tom Casavant
@
