railroads were expensive

from finn on twitter

Hey Ford, GM, Stellantis, and maybe Tesla: Jensen says you’re losers.

Comic. One... two... THREE! [text in red] X Deprecated [line break] One... two... three... GO! [text in red] Deprecated [red curly bracket around top two lines] Too easy to mix up [line break] Three... two... one... GO! [text in green] [check mark] ISO Standard [caption] If I were in charge of ISO, the first thing I’d do would be to standardize the way people count out loud before doing something in sync.

Countdown Standard

xkcd.com/3232/

A NASA technical paper on Gas-Core Nuclear Rockets shows their Isp scaling to 6500s if they can retain the uranium plasma at 2000 bar:
ntrs.nasa.gov/citations/19...
At the 12 GW scale, they'd reach 58 kW/kg. 7.5% of reactor output becomes waste heat at 1400K to be removed by radiators.

Pi tree!

Course | RLHF Book by Nathan Lambert Course lectures and talks on RLHF and post-training.

Excited to launch the accompanying free RLHF Course for my book. To kick it off, I've released:
- Welcome video
- Lecture 1: Overview of RLHF & Post-training
- Lecture 2: IFT, Reward Models, Rejection Sampling
- Lecture 3: RL Math
- Lecture 4: RL Implementation
Landing page: rlhfbook.com/course

Turing Award recipient Sir Charles Antony Richard Hoare died March 5, 2026. His 1980 ACM A.M. Turing Award cited “fundamental contributions to the definition and design of programming languages,” but that is only part of what he contributed during a career spanning six decades. buff.ly/kba0bXb

Enjoying the For You feed? Give it a like ♡ to help more people discover it: bsky.app/profile/did:...

The more people use it -> the more feedback we get -> the better we can make it for you.

"You sound like an LLM."

Sweetie, LLMs sound like *me.*

Picture of the century. 😍

📷 credit: Science Tube

The inevitable need for an open model consortium And yes, I hate consortia too.

In 5-10 years, as models get more expensive & capable, I see the funding structures and support for open models breaking down. We need to consider if we need other options of supporting the open ecosystem.

The inevitable need for an open model consortium
www.interconnects.ai/p/the-inevit...

this guy's read the mythos system card

<Animated.View ref={console.log} />

left: bsky.app with an element highlighted. right: browser console with a html element logged

pro react tip: use `ref={console.log}` to see where your element has gone

Water use skeptics, explain this

A McDonald’s where the sign has been reduced to McDo.

There is no McTry.

Saw a reel making fun of people who were expressing skepticism of the #Artemis II images in Instagram comments and while it's true that a lot of folks are just spreading conspiracy theories, there are misconceptions that can just be addressed directly!

1/🧵

He does have a point.

FAKE-ASS LEAK UNDERESTIMATED SCORES BY 10+%

People are using AI to break CUDA’s moat.

Given any pytorch model, it profiles it, ranks bottlenecks by amdahl's law, writes triton or CUDA C++ replacements, and runs 300+ experiments overnight with no human in the loop.

- 5.29x over pytorch eager on rmsnorm
- 2.82x on softmax

Comic. [Sign above four people. A person sits at a desk working on a laptop. A person with ponytail is talking to person with white hat. A person with short hair walks away.] SIGN: It has been [-0.00000000000000044] days since our last floating point error

Day Counter

xkcd.com/3228/

Earthset from Artemis II. I am overcome.

Earthset captured through the Orion spacecraft window at 6:41 p.m. EDT, April 6, 2026, during the Artemis II crew’s flyby of the Moon. A muted blue Earth with bright white clouds sets behind the cratered lunar surface. The dark portion of Earth is experiencing nighttime. On Earth’s day side, swirling clouds are visible over the Australia and Oceania region. In the foreground, Ohm crater has terraced edges and a flat floor interrupted by central peaks. Central peaks form in complex craters when the lunar surface, liquefied on impact, splashes upwards during the crater’s formation. [alt text from NASA]

#Artemis II lunar flyby images are showing up! 😍

A crescent Earth setting behind the Moon.

AI World Clocks The current time as rendered by 9 different AI models. By Brian Moore.

Was reminded earlier that this exists and is wonderful.

clocks.brianmoore.com

new bloggery, in which i am nerd-sniped by @mattkeeter.com into noodling on webassembly, tail calls, and performance wingolog.org/archives/202...

We've signed an agreement with Google and Broadcom for multiple gigawatts of next-generation TPU capacity, coming online starting in 2027, to train and serve frontier Claude models.

#Intel released the 91st edition of the Software Developer’s Manuals with canonized #AMX_COMPLEX.
All-in-One:
cdrdv2-public.intel.com/916575/32546...
Changes v83:
cdrdv2-public.intel.com/916574/25204...

claude costs $20/mo but attaching an agent harness to the chipotle customer service endpoint is free

How much do you know about late 90s/early 2000s computing and technology?

i have basically spent my entire life waiting to receive this particular text message

I’m gonzo for AI and this is a good idea. Wikipedia belongs to a deeper pace layer. Critical infrastructure. Move slow, edit things.

Qworld: Question-Specific Evaluation Criteria for LLMs ArXiv link for Qworld: Question-Specific Evaluation Criteria for LLMs

This paper introduces Qworld, generating question-specific evaluation criteria for large language models. Using a recursive expansion tree, Qworld uncovers nuanced LLM capabilities often missed by standard metrics, improving evaluations in healthcare and reasoning. https://arxiv.org/abs/2603.23522