Carlos Scheidegger
@cscheid.net
Engineer at Posit (fka RStudio), technical lead at quarto.org
Learning Brazilian Choro, the 7-string guitar, and to deal with the Minneapolis winter after 10 years in Tucson
Learning Brazilian Choro, the 7-string guitar, and to deal with the Minneapolis winter after 10 years in Tucson
oh god I just needed to log in to google cloud console for the first time ever.
How are these people still in business? Like. What?
How are these people still in business? Like. What?
January 12, 2026 at 1:34 AM
oh god I just needed to log in to google cloud console for the first time ever.
How are these people still in business? Like. What?
How are these people still in business? Like. What?
Reposted by Carlos Scheidegger
*whispering* this is the performance of public virtue and should be feted
Losing my shit at Ashley St Clair doing a reverse Naomi Wolf.
January 11, 2026 at 8:07 PM
*whispering* this is the performance of public virtue and should be feted
Realizing now that we'll likely see the first big "agents gone wrong" moment when adversarial tools like Glaze become good enough to encode malicious prompts into the glazing.
January 11, 2026 at 7:18 PM
Realizing now that we'll likely see the first big "agents gone wrong" moment when adversarial tools like Glaze become good enough to encode malicious prompts into the glazing.
Today Claude is building a command-line app to convert sheet music to a music grid format I use personally to memorize tunes. Screenshots of the Claude Code session follow.
January 11, 2026 at 4:46 PM
Today Claude is building a command-line app to convert sheet music to a music grid format I use personally to memorize tunes. Screenshots of the Claude Code session follow.
Small case in point, *literally just now*. We're doing a collaborative editor for Quarto (yeah, stay tuned!)
I'm implementing image drag-and-drop. I gave Claude parameters for everything I had considered. It came back with
"what if someone else changed the document while you were in the UI flow?"
I'm implementing image drag-and-drop. I gave Claude parameters for everything I had considered. It came back with
"what if someone else changed the document while you were in the UI flow?"
This kind of thing has happened to me now two or three times. I have to stop and stare at trees for a while every time, it’s so disconcerting. You write a big design document, tell it to review, and eventually it comes back with an observation that I can’t describe in words other than “intelligent”.
January 10, 2026 at 7:25 PM
Small case in point, *literally just now*. We're doing a collaborative editor for Quarto (yeah, stay tuned!)
I'm implementing image drag-and-drop. I gave Claude parameters for everything I had considered. It came back with
"what if someone else changed the document while you were in the UI flow?"
I'm implementing image drag-and-drop. I gave Claude parameters for everything I had considered. It came back with
"what if someone else changed the document while you were in the UI flow?"
This isn't an earthshaking announcement, but it's a serious advance: open Erdős problem solved with LLMs+Lean mathstodon.xyz/@tao/1158558...
Terence Tao (@[email protected])
Let me begin by quickly recapping the history of this problem. In 1975, Erdos, Graham, Ruzsa, and Strauss studied the prime factorization of binomial coefficients such as \(\binom{2n}{n}\), and pose...
mathstodon.xyz
January 10, 2026 at 5:28 PM
This isn't an earthshaking announcement, but it's a serious advance: open Erdős problem solved with LLMs+Lean mathstodon.xyz/@tao/1158558...
I would like to express contrition and retract everything nice I've ever said publicly about Steve Yegge's beads, in case you read what I type here.
January 9, 2026 at 6:20 PM
I would like to express contrition and retract everything nice I've ever said publicly about Steve Yegge's beads, in case you read what I type here.
Reposted by Carlos Scheidegger
“It’s open season on the unabashedly earnest” feels right lately. In 1967 Brackman called it “the put-on”: ambiguity that makes you question if you're a sucker
I wrote abt how genAI scales put-ons & erodes signs of sincerity, & which I hope stay sacred
statmodeling.stat.columbia.edu/2026/01/07/i...
I wrote abt how genAI scales put-ons & erodes signs of sincerity, & which I hope stay sacred
statmodeling.stat.columbia.edu/2026/01/07/i...
It’s open season on the unabashedly earnest | Statistical Modeling, Causal Inference, and Social Science
statmodeling.stat.columbia.edu
January 7, 2026 at 5:35 PM
“It’s open season on the unabashedly earnest” feels right lately. In 1967 Brackman called it “the put-on”: ambiguity that makes you question if you're a sucker
I wrote abt how genAI scales put-ons & erodes signs of sincerity, & which I hope stay sacred
statmodeling.stat.columbia.edu/2026/01/07/i...
I wrote abt how genAI scales put-ons & erodes signs of sincerity, & which I hope stay sacred
statmodeling.stat.columbia.edu/2026/01/07/i...
Truly magical to hack together an _HTML app_ in under an hour that has the google docs experience of changing something in your laptop and seeing it instantly update on your tablet.
Automerge might be life-changing technology
There's a beautiful future world where we might forget git ever existed, but I think we won't forget about CRDTs
There's a beautiful future world where we might forget git ever existed, but I think we won't forget about CRDTs
January 9, 2026 at 3:43 AM
Truly magical to hack together an _HTML app_ in under an hour that has the google docs experience of changing something in your laptop and seeing it instantly update on your tablet.
Automerge might be life-changing technology
There's a beautiful future world where we might forget git ever existed, but I think we won't forget about CRDTs
There's a beautiful future world where we might forget git ever existed, but I think we won't forget about CRDTs
January 9, 2026 at 3:28 AM
Automerge might be life-changing technology
There's a beautiful future world where we might forget git ever existed, but I think we won't forget about CRDTs
There's a beautiful future world where we might forget git ever existed, but I think we won't forget about CRDTs
Anyone else seeing Claude Code crash fairly often since the upgrade to 2.1.2? Getting to the point that I'm about to try OpenCode if it continues :(
January 9, 2026 at 1:49 AM
Anyone else seeing Claude Code crash fairly often since the upgrade to 2.1.2? Getting to the point that I'm about to try OpenCode if it continues :(
Tangerine Dream’s Mojave Plan is just Borges’s Aleph rendered to music, right?
January 8, 2026 at 6:11 PM
Tangerine Dream’s Mojave Plan is just Borges’s Aleph rendered to music, right?
Reposted by Carlos Scheidegger
Getting started with Claude for software development: steveklabnik.com/writing/gett...
Getting started with Claude for software development
Blog post: Getting started with Claude for software development by Steve Klabnik
steveklabnik.com
January 7, 2026 at 6:20 PM
Getting started with Claude for software development: steveklabnik.com/writing/gett...
Reposted by Carlos Scheidegger
no, absolutely not, you all should've been nicer to my trans homies
January 7, 2026 at 6:15 PM
no, absolutely not, you all should've been nicer to my trans homies
This is so much worse than you think
If you made a Venn diagram of every weird person I knew in Silicon Valley during the first dot-com boom, centrifuged it, extracted the pellet, and re-suspended it in high-proof eugenics with a splash of AI, you'd end up with something like this.
It'll take a strong stomach to read this "gift" link.
It'll take a strong stomach to read this "gift" link.
Can You Optimize Love?
www.nytimes.com
January 6, 2026 at 11:57 PM
This is so much worse than you think
Nothing gives "first work Monday of the year" vibes like yet another Golang security theater scanning false positive
January 5, 2026 at 4:26 PM
Nothing gives "first work Monday of the year" vibes like yet another Golang security theater scanning false positive
Reposted by Carlos Scheidegger
January 5, 2026 at 12:58 PM
Is there something for books that
1) isn't goodreads
2) has UX comparable to letterboxd?
1) isn't goodreads
2) has UX comparable to letterboxd?
January 4, 2026 at 10:19 PM
Is there something for books that
1) isn't goodreads
2) has UX comparable to letterboxd?
1) isn't goodreads
2) has UX comparable to letterboxd?
Please read the whole thread through, starting from the skeet that this is in reply to.
Ok:
Write a python package that does multivariate Nadaraya-Watson and local polynomial kernel regression with homo-/heteroscedastic goodness of fit checking and automatic crossvalidated order and bandwidth selection as an sklearn (fit/predict) compatible class.
Write a python package that does multivariate Nadaraya-Watson and local polynomial kernel regression with homo-/heteroscedastic goodness of fit checking and automatic crossvalidated order and bandwidth selection as an sklearn (fit/predict) compatible class.
January 4, 2026 at 6:23 PM
Please read the whole thread through, starting from the skeet that this is in reply to.
we're settling for a rewatch of Beyond the Infinite Two Minutes, and every time I think about this movie it makes me so, so happy.
Seriously, you all need to watch it
Seriously, you all need to watch it
January 2, 2026 at 10:03 PM
we're settling for a rewatch of Beyond the Infinite Two Minutes, and every time I think about this movie it makes me so, so happy.
Seriously, you all need to watch it
Seriously, you all need to watch it
Case in point for the day: I've just replaced a long-standing habit tracking notebook with an HTML app that uses automerge to sync across my phone, ipad, laptop, or anywhere I can log into a webpage from. It's now an app on my phone home screen.
This was a total of 45 minutes of work.
This was a total of 45 minutes of work.
I think I'll spend a fair amount of 2026 reconsidering my personal tech stack.
In 3 hours, claude code and I designed, built and deployed an authenticated sync server for automerge.org; I already have a handful of applications in mind.
Aside from gsheets, I plan to ditch google docs by eoy
In 3 hours, claude code and I designed, built and deployed an authenticated sync server for automerge.org; I already have a handful of applications in mind.
Aside from gsheets, I plan to ditch google docs by eoy
January 2, 2026 at 6:49 PM
Case in point for the day: I've just replaced a long-standing habit tracking notebook with an HTML app that uses automerge to sync across my phone, ipad, laptop, or anywhere I can log into a webpage from. It's now an app on my phone home screen.
This was a total of 45 minutes of work.
This was a total of 45 minutes of work.
I'm just going to give this idea away in the hopes that someone will implement it:
Instead of that deranged Steve Yegge system, I think the way to make it really hum is to read this paper, and replace Amazon's Mechanical Turk with Claude Code (I'm not even joking!)
cs.pomona.edu/~michael/cou...
Instead of that deranged Steve Yegge system, I think the way to make it really hum is to read this paper, and replace Amazon's Mechanical Turk with Claude Code (I'm not even joking!)
cs.pomona.edu/~michael/cou...
cs.pomona.edu
January 2, 2026 at 5:30 PM
I'm just going to give this idea away in the hopes that someone will implement it:
Instead of that deranged Steve Yegge system, I think the way to make it really hum is to read this paper, and replace Amazon's Mechanical Turk with Claude Code (I'm not even joking!)
cs.pomona.edu/~michael/cou...
Instead of that deranged Steve Yegge system, I think the way to make it really hum is to read this paper, and replace Amazon's Mechanical Turk with Claude Code (I'm not even joking!)
cs.pomona.edu/~michael/cou...
Reposted by Carlos Scheidegger
this is one of the most insane [laudatory] things I’ve read today.
steve-yegge.medium.com/welcome-to-g...
steve-yegge.medium.com/welcome-to-g...
Welcome to Gas Town
Happy New Year, and Welcome to Gas Town!
steve-yegge.medium.com
January 2, 2026 at 5:01 PM
this is one of the most insane [laudatory] things I’ve read today.
steve-yegge.medium.com/welcome-to-g...
steve-yegge.medium.com/welcome-to-g...