In 48 hours with #Claude code, I built a C++ backend to my logitr #rstats 📦 to make mixed logit model estimation ⚡ fast. There's no excuse now for slow software now when tools like CC are available to do the performance engineering. A post on this build out: www.jhelvy.com/blog/2026-07...

Dissenting on a birthright citizenship case should be disqualifying for SCOTUS. Not only is the language of the 14th amendment abundantly clear, we fought a civil war to enshrine it in our constitution. That amendment was a very, very costly amendment. Shame on Alito, Gorsuch, and Thomas.

This is an excellent talk on the recent history of AI progress in solving increasingly challenging problems in science and the shockingly consistent outcome that just scaling the models more leads to continued performance improvements. youtu.be/Mw60FH5iflI?...

If you've ever been curious about how to use claude code skills, check out @pingfanhu.bsky.social's recent post. He shows how to leverage skills to encapsulate complex workflows and achieve impressively consistent outputs from agents. pingfanhu.com/blog/2026-06...

Excellent reporting and analysis on America's deadly mega trucks and SUVs www.nytimes.com/interactive/...

🚨 The U.S. scientific enterprise faces an existential threat few are talking about. A proposed OMB rule would reshape ALL federal research funding — NIH, NSF, DOE, DOD, every agency. What it does & how to push back 👇 defendfederalresearch.org 🧵...

🚨 5 alarm fire territory 🚨 www.nytimes.com/2026/06/05/w...

I cannot think of a better fitting president for the 二百五 bill

The BUILD America 250 Act charges #EV owners $130/year to "pay their fair share" in road taxes. Hogwash. Average drivers pay ~$95/yr in federal gas tax. A 50 mpg hybrid pays just $42, yet no surcharge for them. It's almost like this has nothing to do with tax revenue and is just an EV penalty 🤔

Esp for use with LLMs - I'm increasingly convinced #quarto is the ideal LLM output. Separating *content* from *format* is so, so useful. www.jhelvy.com/blog/2026-05...

#Quarto is much more than a publishing framework. When leveraged with agents with Claude code, it's a powerhouse tool for agentic workflows. In this blog post, I make a few quick arguments for why you should check out Quarto if you're working with agents. www.jhelvy.com/blog/2026-05...

A less extreme version is just to put speed governors on every car. You can put the cap at something like 85mph, but seriously beyond that there is truly no reason to be allowed to drive faster except like running from the cops

We are watching our democracy crumble. With this SCOTUS ruling, every state has no choice but to follow TX and redraw their voting maps. The south will become an entirely white R vote, and blue states will become entirely D. The changes made now will lock in polarization for a generation or more.

Excellent piece by Geraint Rees and @jameswilsdon.bsky.social on the massive challenges facing the legacy grant funding system in the era of AI. We need a better approach, like yesterday. www.nature.com/articles/d41...

You're next Donny www.nytimes.com/2026/04/12/w...

@pingfanhu.bsky.social has an amazing 3-part blog series on agentic engineering workflows: Part 1 - Claude code basics: pingfanhu.com/blog/2026-03... Part 2 - Workflow and examples: pingfanhu.com/blog/2026-04... Part 3 - Software that ties it together: pingfanhu.com/blog/2026-04...

At its peak, the US had over half a million soldiers deployed to Vietnam, with a total of 2.7 million served over the course of the war, and US forces still failed to secure the country

This is monumental...the entire open source world now has access to a #python version of Claude code, with a #rust port coming soon. This is the fastest repo in history to surpass 100k stars. Absolutely wild that the most powerful AI coding agent is now just out there. github.com/ultraworkers...

Oof...damning evidence of AI responses on online surveys. The battle against AI survey bots is well underway, and it doesn't look like the humans are winning www.theguardian.com/technology/2...

The very best stats course you can get is still free. Absolutely amazing stuff.

@jigarshahdc.bsky.social on point👇

If you think that's cool, wait til yoy see my market research tech

Has there ever been a time when the strategy of "if we just keep bombing civilians eventually they'll finally rise up to overthrow their oppressive government" ever worked?

Someone ported Karpathy's microGPT to pure #julialang in 99 lines with 0 dependencies, it's 1600x faster than CPython... hard to emphasize enough how impressive this is www.reddit.com/r/Julia/s/Vg...

@simonwillison.net is the first I've heard use the term "agentic engineering", which feels like a much better description of how I use tools like Claude Code (as opposed to "vibe coding", which implies no human architecting the result). Great stuff in this post: simonwillison.net/2026/Feb/23/...

Sharing a new #opensource project we've been building: vehicletrends.us — an interactive dashboard tracking U.S. automotive market trends from millions of listings. Data is available via the {vehicletrends} #rstats package. Site made with #Quarto, code at github.com/vehicletrends 🚗 📊

Check out this wide-ranging discussion I had with Frank Sesno, director of the Alliance for a Sustainable Future at GWU. Topics include EV competition, US-based EV production, facing the challenge of Chinese EV leadership, and national security (among other things). www.youtube.com/watch?v=oUMz...

We live in a magical time for #dataviz. This map is just a static html page served on GitHub pages 🤯 It uses the incredible {pmtiles} #rstats package by @kylewalker.bsky.social to quickly filter through ~21M rows of data hosted on Cloudflare vehicletrends.github.io/hhi-map/

So jealous of S. Korea www.bloomberg.com/news/article...

There I fixed it

I teach my students to always start the y-axis at 0 when making a bar chart for a reason x.com/WhiteHouse/s...

Incredible self own for the US. The damage being done to the US scientific enterprise is generational. We will look back on this as a tipping point where the US chose all on its own to stop leading the world in science. www.science.org/content/arti...

Now channel your inner Mitch McConnell and stick to it www.nytimes.com/2026/01/24/u...

Defund ICE or shut the government down. This is the moderate position.

People are holding on to hope with "but the Generals wouldn't obey that order right?" and 1) that says a LOT about where we are right now and 2) you better believe they 100% would follow that order, and if not there are hundreds in line who would I mean look at who they put in charge of DoD ffs

For the record, as an American, I think threatening tariffs on our closest European allies and fellow NATO members because they are standing up to US threats to forcibly annex Greenland is bad.

Most Americans have no idea how immensely pissed Canadians are at the US. I'm not Canadian, but have family there, and the damage from the US's betrayal will last a generation or more. There's no returning to the prior relationship regardless who takes power in the US.

It begins. Canadians will soon experience the vast superiority of Chinese EVs, and the US will lose its largest vehicle export market. The transition will happen much faster than people think.

Updated my LLM / AI policy for my intro to #Rstats programming course this semester: p4a.seas.gwu.edu/2026-Spring/... Largely inspired by @andrew.heiss.phd post: lnkd.in/e_Sr2D-5

It's a DS workshop by @andrew.heiss.phd, what more do you need to know? You should check it out #rstats #positron

🤌

It's all too obvious why any regime as unpopular as the current one would work so hard to silence public data infrastructure www.bloomberg.com/news/article...

Two more shot. Shut it down until the lawlessness ends. www.nytimes.com/2026/01/08/u...

I swear to God if the shoe were in the other foot there is NO WAY the Rs would have let this obscene level of lawlessness go on. The Ds need to grow a pair and start pulling from the old Mitch McConnell playbook.

If they're murdering people in broad daylight with cameras rolling, imagine what they're doing to the thousands being held in the camps.

They're literally murdering us

For those too young to remember the lead up to the invasion of Iraq, this is actually nothing like that. The Iraq invasion (though built on lies) was approved by Congress. This is much more like Putin's illegal invasion of Ukraine, or Germany into Poland, etc.

Please please please EV designers, bring back buttons and just make normal cars that are electric nobody wants to turn on their wipers with a touch screen! 🙏

Every person who voted for this criminal because they wanted to get the US out of foreign wars will now cheer and justify this with all kinds of BS. Call them out every time.

And people weren't taking his threats about annexing Canada or Greenland seriously