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Doing well in your courses: Andrej's advice for success (2013)

https://cs.stanford.edu/people/karpathy/advice.html
88•peterkshultz•1h ago•30 comments

Replacement.ai

https://replacement.ai
651•wh313•4h ago•419 comments

The Trinary Dream Endures

https://www.robinsloan.com/lab/trinary-dream/
12•FromTheArchives•1h ago•9 comments

What Are RFCs? The Forgotten Blueprints of the Internet

https://ackreq.github.io/posts/what-are-rfcs/
54•ackreq•3h ago•42 comments

Show HN: Duck-UI – Browser-Based SQL IDE for DuckDB

https://demo.duckui.com
142•caioricciuti•6h ago•44 comments

Show HN: Pyversity – Fast Result Diversification for Retrieval and RAG

https://github.com/Pringled/pyversity
38•Tananon•3h ago•3 comments

Comparing the power consumption of a 30 year old refrigerator to a brand new one

https://ounapuu.ee/posts/2025/10/14/fridge-power-consumption/
52•furkansahin•5d ago•60 comments

Infisical (YC W23) Is Hiring Full Stack Engineers

https://www.ycombinator.com/companies/infisical/jobs/0gY2Da1-full-stack-engineer-global
1•vmatsiiako•1h ago

How to Assemble an Electric Heating Element from Scratch

https://solar.lowtechmagazine.com/2025/10/how-to-build-an-electric-heating-element-from-scratch/
39•surprisetalk•4h ago•21 comments

The macOS LC_COLLATE hunt: Or why does sort order differently on macOS and Linux

https://blog.zhimingwang.org/macos-lc_collate-hunt
34•g0xA52A2A•5h ago•5 comments

GNU Octave Meets JupyterLite: Compute Anywhere, Anytime

https://blog.jupyter.org/gnu-octave-meets-jupyterlite-compute-anywhere-anytime-8b033afbbcdc
13•bauta-steen•2h ago•0 comments

The case for the return of fine-tuning

https://welovesota.com/article/the-case-for-the-return-of-fine-tuning
97•nanark•8h ago•43 comments

The zipper is getting its first major upgrade in 100 years

https://www.wired.com/story/the-zipper-is-getting-its-first-major-upgrade-in-100-years/
58•bookofjoe•2h ago•57 comments

Abandoned land drives dangerous heat in Houston, study finds

https://stories.tamu.edu/news/2025/10/07/abandoned-land-drives-dangerous-heat-in-houston-texas-am...
85•PaulHoule•4h ago•78 comments

The Spherical Cows of Programming

https://programmingsimplicity.substack.com/p/the-spherical-cows-of-programming
17•whobre•2h ago•19 comments

Xubuntu.org Might Be Compromised

https://old.reddit.com/r/Ubuntu/comments/1oa4549/xubuntuorg_might_be_compromised/
188•kekqqq•3h ago•66 comments

Why an abundance of choice is not the same as freedom

https://aeon.co/essays/why-an-abundance-of-choice-is-not-the-same-as-freedom
67•herbertl•3h ago•29 comments

The Spilhaus Projection-A World Map According to Fish

https://southernwoodenboatsailing.com/news/the-spilhaus-projection-a-world-map-according-to-fish
10•zynovex•1w ago•0 comments

Show HN: Notepad.exe – macOS editor for Swift and Python (now Linux runtime)

https://notepadexe.com/
11•krzyzanowskim•2h ago•3 comments

Lost Jack Kerouac story found among assassinated mafia boss' belongings

https://www.sfgate.com/sf-culture/article/lost-jack-kerouac-chapter-found-mafia-boss-estate-21098...
76•rmason•4d ago•40 comments

Show HN: Open-Source Voice AI Badge Powered by ESP32+WebRTC

https://github.com/VapiAI/vapicon-2025-hardware-workshop
23•Sean-Der•1w ago•3 comments

Thieves steal crown jewels in 4 minutes from Louvre Museum

https://apnews.com/article/france-louvre-museum-robbery-a3687f330a43e0aaff68c732c4b2585b
51•malshe•1h ago•17 comments

Scheme Reports at Fifty

https://crumbles.blog/posts/2025-10-18-scheme-reports-at-fifty.html
9•djwatson24•3h ago•0 comments

Windows 11 25H2 October Update Bug Renders Recovery Environment Unusable

https://www.techpowerup.com/342032/windows-11-25h2-october-update-bug-renders-recovery-environmen...
39•MaximilianEmel•1h ago•13 comments

Improving PixelMelt's Kindle Web Deobfuscator

https://shkspr.mobi/blog/2025/10/improving-pixelmelts-kindle-web-deobfuscator/
61•ColinWright•5h ago•13 comments

I wish SSDs gave you CPU performance style metrics about their activity

https://utcc.utoronto.ca/~cks/space/blog/tech/SSDWritePerfMetricsWish
10•ingve•55m ago•1 comments

EQ: A video about all forms of equalizers

https://www.youtube.com/watch?v=CLAt95PrwL4
234•robinhouston•1d ago•70 comments

Ask HN: What are people doing to get off of VMware?

5•jwithington•48m ago•1 comments

Feed me up, Scotty – custom RSS feed generation using CSS selectors

https://feed-me-up-scotty.vincenttunru.com/
21•diymaker•4h ago•5 comments

OpenAI researcher announced GPT-5 math breakthrough that never happened

https://the-decoder.com/leading-openai-researcher-announced-a-gpt-5-math-breakthrough-that-never-...
281•Topfi•6h ago•176 comments
Open in hackernews

What Are RFCs? The Forgotten Blueprints of the Internet

https://ackreq.github.io/posts/what-are-rfcs/
54•ackreq•3h ago

Comments

mlhpdx•2h ago
These are the RFCs we know, and many others we don’t. The ones “lost” to obscurity generally deserve the fate but I enjoy reading them for the historical context. Fascinating stuff.
ErikCorry•2h ago
Forgotten? No mention of why we should think they are forgotten outside the headline.
zaik•1h ago
Outside of my friend group, no one uses XMPP, the internet standard for chat, they only know about walled gardens and custom protocols by VC startups now :(
SunlitCat•1h ago
Since when became XMPP "the internet standard for chat"? What about IRC[0]? :(

[0]: RFCs 1459, 2810 - 2813, 7194.

lou1306•1h ago
Come on, of course there will be some protocols that are more obscure than others, but the overall concept of RFCs is far from "forgotten".

Besides, a lot of these walled chat gardens roll their own XMPP/Jabber thingy behind the scenes.

MYEUHD•1h ago
Whatsapp, Zoom and Kik Messenger use XMPP under the hood.

Just because it's not well-known doesn't mean it's not widely used

betaby•53m ago
Whatsapp used XMPP many years ago, not today though.
alexchantavy•34m ago
I miss when Facebook Messenger let you connect to it with XMPP back in the day so you could have it together with your other msging services on Adium/Pidgin
loeg•44m ago
XMPP has nothing going for it.
1970-01-01•1h ago
Clickbait gonna bait.
AungChoMin•1h ago
Wavepay
ackreq•1h ago
Nowadays, my friend, people just copy, paste, or vibecode everything. If you (or anyone) think they’re not forgotten, you’re one of the few who still read and understand the RFCs. Said that in the post too.
alterom•1h ago
Yeah, as if reading and understanding RFCs was the pastime of the commoner in Ye Olde Dayse.

Or as if the vibe-coder of today would've totally™ definitely© be the type of person to peruse the RFCs.

It's like saying the the proof of, say, Seifert-van Kampen theorem is "forgotten" because nowadays, my friend, people ask ChatGPT to write out solutions to their math homework.

woodruffw•1h ago
I don’t know what niche you inhabit, but anecdotally the overwhelming majority of engineers I know have consulted an RFC. RFCs are an active component in the Internet; you need to at least reference them (if not fully read them) to understand how various parts of the Internet interoperate.

(It seems extremely unlikely that the average non-junior engineer hasn’t opened up RFC 3339 or one of the HTTP caching RFCs, just for example.)

LambdaComplex•48m ago
Personally, I have about a dozen related RFCs on my bookmarks toolbar due to a project that I worked on. I was referencing them constantly when I was actively working on that project.
dehugger•33m ago
I dunno, I think many dev are aware of the existence of RFCs, but if your work occurs at higher levels of the stack there is frequently not a pressing need to read them.

For example, you don't have to read the specific RFC to know the difference between 200, 400, and 500 status codes. Any layman's blog post (or literally just reading the response messages accompanying those codes in actual use) is enough knowledge to get you real far.

That said; if a senior dev isn't aware of 3339, the holiest of RFCs, then that's a problem.

rkomorn•10m ago
There's a strong inverse correlation in my career between how often a dev refers to RFCs by number alone and how much I ever want to interact (let alone work) with them again.

Doubly so for the "meta" RFCs (eg 1925).

James_K•1h ago
The fact that you are able to send this message over the internet is proof that a quite large population of people are still reading and still understand internet standards.
Anon1096•1h ago
The people building the infrastructure powering the internet at cloudflare, major cloud providers, isps, etc are all regularly reading and referencing RFCs (from experience). People who aren't reading them now weren't reading them in the past either, we don't need some RFC moral panic.
Demiurge•40m ago
I agree. RFCs have a niche use case, like a manual, or a glossary. They're there, if you need them, but few people are supposed to be implementing RFCs or internet from "blueprints" all the time.
RHSeeger•9m ago
As part of my normal work, I linked and quoted part of an RFC just this week. They're not forgotten, just... less remembered, I guess.
jeffreygoesto•1h ago
"With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea."
mkoubaa•1h ago
Reminds me of a Russian joke:

Can a hedgehog fly? Yes, if you kick it.

hinkley•38m ago
Birdie, birdie in the sky

Dropped some toothpaste in my eye

Me no care, me no cry

Me just glad that cows don’t fly

ackreq•1h ago
"It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead."
dc396•1h ago
"with sufficient thrust, anything can fly -- it's the landing that can get messy"
dcminter•1h ago
Not forgotten, but this article did not mention my favourite and the most moving RFC: 2468

https://datatracker.ietf.org/doc/html/rfc2468

There's quiet genius in that choice of number by the way. 2, 4, 6, 8, who do we appreciate?

Related: https://www.internetsociety.org/grants-and-awards/postel-ser...

ackreq•1h ago
Wow, never heard of this one before. Thanks for sharing!
dcminter•58m ago
It's a treasure. I feel for those expressing their loss - and at the same time am slightly in awe that IANA used to be "just some guy" - this plus the April Fool tradition gives the RFC series a very approachable human feeling.
hinkley•39m ago
Vint is now 82 and I wonder when we’ll have a black bar for him.

The most recent picture of him on the Wikipedia article was at 74 and he still looked fairly spry.

gnarlouse•1h ago
Aren’t all PEPs, TC39s, and BIPs forms of RFCs?
woodruffw•1h ago
They’re all forms of requests for comment, but people also typically mean RFC to mean IETF RFCs.
betaby•52m ago
They surely are!
rednafi•52m ago
Oh, RFCs aren’t forgotten. Every FAANG and wannabe FAANG has some form of RFC writing and reading culture baked in.

With AI, companies are forcing people to churn them out faster than ever. It’s gotten to the point where, to keep up with this slop, people are using LLMs to summarize LLM-generated RFCs.

JaumeGreen•34m ago
What I dislike of RFCs is that some are accepted, but still referred as RFC, for no apparent reason.

I specially dislike when some people try to do the same with internal documentation and still call "RFC 2029 Project Lifecycle" when it has been accepted by all the appropriate parties. It makes it harder to look for than needed, and it's not clear, by the name, if it has been passed or not.

CaptainOfCoit•26m ago
The nicer format is "X Change/Improvement Proposal" or something similar, shorted to "XCP/XIP". Not sure where it originally comes from, but is pretty popular in various protocol circles, Bitcoin Improvement Proposal (BIP) is one example.
goku12•21m ago
There are NIPs (for Nostr), PEPs (for Python)... But they all have the problem that parent is complaining about. The possibilities/proposal part of the names remain even after they have been accepted or rejected.
lanyard-textile•11m ago
The discussion continues for the lifetime of an RFC, even after its acceptance. The idea is to continually keep it in a challenged state so that we remember anything can be possible.

If we desire something new, the RFC invites us to build upon it and not accept it as gospel.

Whether you, your project, or your organization accept it is completely disconnected with the concept of the RFC. You may procedurally accept it as unchallengeable gospel, but the truth remains that you can always have an opinion about it regardless.

jibal•23m ago
Steve Crocker hired me as junior when I was a freshman at UCLA, Charley Kline who made the first ARPANET remote login (to SRI) was my supervisor, Vint Cerf was a cow orker, and Jon Postel shared a cubicle wall with me. I managed to get a mention in RFC 57. Those were the days.

P.S.

"The goal was to create a reliable, distributed communication system that could continue operating even if parts of it were damaged by a nuclear attack."

This is a myth. The ARPANET was not hardened; quite the opposite. ARPA's goal was for their researchers located across the country to easily share their work ... initially it was just used to share papers, before Ray Tomlinson invented email. Beyond that, JCR Licklider who laid the conceptual foundations was looking toward something along the lines of today's Internet + AI:

https://en.wikipedia.org/wiki/Man%E2%80%93Computer_Symbiosis

P.P.S. Steve Crocker's MIT PhD thesis was on man-machine symbiosis. I know this because he mentioned it to me when I met him in the UCLA Computer Club which he came to because he wanted to teach an informal class on LISP and Theorem Proving, and the club organized such classes. We got to talking about his thesis, he posed some challenges to me that I got lucky in solving, and he offered me a job that shaped the rest of my life--I'm greatly indebted to him.

ackreq•14m ago
You must have some amazing stories from back then! I’d love to read them if you ever feel like writing about it.

Thanks for reading my post. If you notice any incorrect information, please let me know anytime and I’ll update it

spacebuffer•5m ago
Tangent questions:

- What RFCs are useful to read if I want to learn networking well

- I heard that the best way to learn low-level programming is by rebuilding already existing programs. what high quality RFCs can I use as a guide to code-my-own <so and so program>

foo42•3m ago
People interested in the history of the internet may enjoy the book "Where wizards stay up late". I'm sure there are other good books on it too (perhaps others can recommend below), but that's the one I read and enjoyed.