David Andersen
@daveandersen.bsky.social
Computer Science Professor, CMU;
co-founder and CTO, Enriched Ag
Energy-efficient computing, a dash of security, and a pinch of databases.
Also on Mastodon (https://hachyderm.io/@dave_andersen )
signal: dga.48
he/him
co-founder and CTO, Enriched Ag
Energy-efficient computing, a dash of security, and a pinch of databases.
Also on Mastodon (https://hachyderm.io/@dave_andersen )
signal: dga.48
he/him
I'm still having too much fun playing this on the walking commute.
#Uncrossy Jan 16 in 17 moves, in 2:20, no hints, no resets, no undos, auto-hints on
➡️⬆️➡️⬇️⬆️➡️⬆️⬅️⬇️⬅️⬅️⬇️⬇️⬅️⬆️⬇️➡️
uncrossy.com
#Uncrossy Jan 16 in 17 moves, in 2:20, no hints, no resets, no undos, auto-hints on
➡️⬆️➡️⬇️⬆️➡️⬆️⬅️⬇️⬅️⬅️⬇️⬇️⬅️⬆️⬇️➡️
uncrossy.com
Uncrossy
Clear the board by sliding words. A puzzle game by Rob Jagnow.
uncrossy.com
January 16, 2026 at 7:48 PM
I'm still having too much fun playing this on the walking commute.
#Uncrossy Jan 16 in 17 moves, in 2:20, no hints, no resets, no undos, auto-hints on
➡️⬆️➡️⬇️⬆️➡️⬆️⬅️⬇️⬅️⬅️⬇️⬇️⬅️⬆️⬇️➡️
uncrossy.com
#Uncrossy Jan 16 in 17 moves, in 2:20, no hints, no resets, no undos, auto-hints on
➡️⬆️➡️⬇️⬆️➡️⬆️⬅️⬇️⬅️⬅️⬇️⬇️⬅️⬆️⬇️➡️
uncrossy.com
"That’s in part because of media fascination with Weiss’ anti-woke, center-right politics and unearned rise to a lofty rank in broadcasting "
TV Talk: ‘CBS Evening News’ to broadcast from Pittsburgh
TV Talk: ‘CBS Evening News’ to broadcast from Pittsburgh
This evening, Pittsburgh will be the backdrop for what’s become perhaps the most controversial network newscast in America, as CBS brings its retooled “Evening News” to KDKA-TV. The broadcast, airing at 7 p.m., is part of a market-by-market tour for newly installed anchor Tony Dokoupil and editor-in-chief Bari Weiss, a
triblive.com
January 16, 2026 at 7:37 PM
"That’s in part because of media fascination with Weiss’ anti-woke, center-right politics and unearned rise to a lofty rank in broadcasting "
Reposted by David Andersen
The Bari Weiss founded UATX, where "cancel culture" was banned imploded over the imposition of ideological litmus tests on affiliates by its oligarch benefactors, such as a bar on "hating the rich."
www.politico.com/news/magazin...
www.politico.com/news/magazin...
They Wanted a University Without Cancel Culture. Then Dissenters Were Ousted.
Inside the civil war at the anti-woke university backed by Bari Weiss.
www.politico.com
January 16, 2026 at 7:04 PM
The Bari Weiss founded UATX, where "cancel culture" was banned imploded over the imposition of ideological litmus tests on affiliates by its oligarch benefactors, such as a bar on "hating the rich."
www.politico.com/news/magazin...
www.politico.com/news/magazin...
I'm not a big fan of genai for artistic purposes, but HOLY COW was nano banana useful today for trying to reason through some of the design choices for our bathroom remodel. It was hard for us to visualize having a black tile wainscoting vs not and being able to "see" it helped a ton.
January 16, 2026 at 4:09 PM
I'm not a big fan of genai for artistic purposes, but HOLY COW was nano banana useful today for trying to reason through some of the design choices for our bathroom remodel. It was hard for us to visualize having a black tile wainscoting vs not and being able to "see" it helped a ton.
TFW 70% of America is grateful for another country sending troops to ... prevent us from attacking an ally.
This is the stupidest fucking timeline this year.
This is the stupidest fucking timeline this year.
NATO member Sweden has sent military personnel to Greenland, to help defend the island against a US attack. I feel like I went mad typing that sentence. www.dn.se/direkt/2026-...
Kristersson: Svenska militärer anländer till Grönland i dag
Tidigare under dagen meddelade Danmarks regering att man ska skicka militär personal och utrustning till Grönland.
www.dn.se
January 14, 2026 at 8:37 PM
TFW 70% of America is grateful for another country sending troops to ... prevent us from attacking an ally.
This is the stupidest fucking timeline this year.
This is the stupidest fucking timeline this year.
Get in, we're posting boardwalks
January 14, 2026 at 3:10 AM
Get in, we're posting boardwalks
I would just like to say to whomever poured three inches of concrete for the 2nd floor bathrooms in my house in 1956: we are not friends. I mean, you're almost certainly dead by now so that's axiomatic, but really, this is awful and it made the house start to sink and crack. Bogus idea.
January 13, 2026 at 10:38 PM
I would just like to say to whomever poured three inches of concrete for the 2nd floor bathrooms in my house in 1956: we are not friends. I mean, you're almost certainly dead by now so that's axiomatic, but really, this is awful and it made the house start to sink and crack. Bogus idea.
unnngggggh. thank you, pittsburgh water and sewer authority, for providing one hell of an ice skating rink for me to injure myself falling on.
(yes, i've reported this to them already.)
owwww.
(yes, i've reported this to them already.)
owwww.
January 13, 2026 at 3:33 PM
unnngggggh. thank you, pittsburgh water and sewer authority, for providing one hell of an ice skating rink for me to injure myself falling on.
(yes, i've reported this to them already.)
owwww.
(yes, i've reported this to them already.)
owwww.
oh dear. This is potentially addictive.
#Uncrossy Jan 12 in 20 moves, in 2:38, no hints, no resets, no undos
➡️⬆️➡️⬇️➡️⬆️⬇️⬅️⬆️⬆️⬆️➡️⬆️⬇️➡️➡️➡️⬇️⬅️➡️
uncrossy.com
#Uncrossy Jan 12 in 20 moves, in 2:38, no hints, no resets, no undos
➡️⬆️➡️⬇️➡️⬆️⬇️⬅️⬆️⬆️⬆️➡️⬆️⬇️➡️➡️➡️⬇️⬅️➡️
uncrossy.com
Uncrossy
Clear the board by sliding words. A puzzle game by Rob Jagnow.
uncrossy.com
January 12, 2026 at 2:25 PM
oh dear. This is potentially addictive.
#Uncrossy Jan 12 in 20 moves, in 2:38, no hints, no resets, no undos
➡️⬆️➡️⬇️➡️⬆️⬇️⬅️⬆️⬆️⬆️➡️⬆️⬇️➡️➡️➡️⬇️⬅️➡️
uncrossy.com
#Uncrossy Jan 12 in 20 moves, in 2:38, no hints, no resets, no undos
➡️⬆️➡️⬇️➡️⬆️⬇️⬅️⬆️⬆️⬆️➡️⬆️⬇️➡️➡️➡️⬇️⬅️➡️
uncrossy.com
This is a very nice snippet of the document when it comes to LLM-written text. (The thread here is good.) I agree emphatically (while having a lot of fun using LLMs to help code).
January 11, 2026 at 9:39 PM
This is a very nice snippet of the document when it comes to LLM-written text. (The thread here is good.) I agree emphatically (while having a lot of fun using LLMs to help code).
Reposted by David Andersen
The Charlotin database shows how much LLM misuse has exploded.
These are the numbers of court decisions or orders covering AI misuse by legal professionals (I included attorneys and paralegals) in the U.S.
Obviously these lag behind actual misuse:
2023: 3
2024: 13
2025: 184
These are the numbers of court decisions or orders covering AI misuse by legal professionals (I included attorneys and paralegals) in the U.S.
Obviously these lag behind actual misuse:
2023: 3
2024: 13
2025: 184
This behavior, where attorneys drafting responses to sanctions motions or show cause orders regarding LLM use and hallucinated cases, respond with more hallucinated cases, seems to be common.
That's more than flouting rules, that's outright self-destructive. Every time I see these . . .
That's more than flouting rules, that's outright self-destructive. Every time I see these . . .
Ok so, ideally, when you have been show caused for AI misuse, you would not then further misuse AI,
January 9, 2026 at 4:26 PM
The Charlotin database shows how much LLM misuse has exploded.
These are the numbers of court decisions or orders covering AI misuse by legal professionals (I included attorneys and paralegals) in the U.S.
Obviously these lag behind actual misuse:
2023: 3
2024: 13
2025: 184
These are the numbers of court decisions or orders covering AI misuse by legal professionals (I included attorneys and paralegals) in the U.S.
Obviously these lag behind actual misuse:
2023: 3
2024: 13
2025: 184
Reposted by David Andersen
Amazing. archiveofourown.org/works/733964...
Why one small American town won’t stop stoning its residents to death - Charlotte_Stant - The Lottery - Shirley Jackson [Archive of Our Own]
An Archive of Our Own, a project of the Organization for Transformative Works
archiveofourown.org
January 9, 2026 at 4:45 PM
Amazing. archiveofourown.org/works/733964...
Reposted by David Andersen
Martin Peterson's creative response to being banned from teaching Plato (shared with his permission).
January 8, 2026 at 5:38 PM
Martin Peterson's creative response to being banned from teaching Plato (shared with his permission).
I love owning a 3d printer part 41. We're redoing the upstairs bathrooms because cast iron plumbing doesn't last as long as this house is old, so we've squished the four of us into one bathroom. Printed this little wall mount for two electric toothbrushes and now there's less sink chaos.
January 9, 2026 at 2:37 PM
I love owning a 3d printer part 41. We're redoing the upstairs bathrooms because cast iron plumbing doesn't last as long as this house is old, so we've squished the four of us into one bathroom. Printed this little wall mount for two electric toothbrushes and now there's less sink chaos.
I hope the Block family reads this letter. They won't, but you might, and it's worth reading to help cement their legacy of destroying not just one paper - a paper that's been active for 238 years - but two of them, announced in the same month. They're vile opponents of an informed public.
I had to get it out of my system. My open letter to the Block family in light of today's news they are shutting down the storied Post-Gazette. I am just so very angry.
open.substack.com/pub/breathin...
open.substack.com/pub/breathin...
An open letter to the Block family
[inhale]
open.substack.com
January 9, 2026 at 2:00 PM
I hope the Block family reads this letter. They won't, but you might, and it's worth reading to help cement their legacy of destroying not just one paper - a paper that's been active for 238 years - but two of them, announced in the same month. They're vile opponents of an informed public.
Working from home is awesome.
Having my sewer-gas-spewing 96 year old plumbing stack replaced is awesome.
Working from home while having my sewer-gas-spewing 96 year old plumbing stack replaced is not exactly awesome.
Having my sewer-gas-spewing 96 year old plumbing stack replaced is awesome.
Working from home while having my sewer-gas-spewing 96 year old plumbing stack replaced is not exactly awesome.
January 8, 2026 at 7:52 PM
Working from home is awesome.
Having my sewer-gas-spewing 96 year old plumbing stack replaced is awesome.
Working from home while having my sewer-gas-spewing 96 year old plumbing stack replaced is not exactly awesome.
Having my sewer-gas-spewing 96 year old plumbing stack replaced is awesome.
Working from home while having my sewer-gas-spewing 96 year old plumbing stack replaced is not exactly awesome.
Reposted by David Andersen
Stop putting your kids online.
You're putting their safety at risk. Adults are getting off to them. Shady GenAI companies are making CSAM of them. You are not as private as you think you are. Stop relying on tech billionaires to protect your kids for you.
You're putting their safety at risk. Adults are getting off to them. Shady GenAI companies are making CSAM of them. You are not as private as you think you are. Stop relying on tech billionaires to protect your kids for you.
January 7, 2026 at 11:25 PM
Stop putting your kids online.
You're putting their safety at risk. Adults are getting off to them. Shady GenAI companies are making CSAM of them. You are not as private as you think you are. Stop relying on tech billionaires to protect your kids for you.
You're putting their safety at risk. Adults are getting off to them. Shady GenAI companies are making CSAM of them. You are not as private as you think you are. Stop relying on tech billionaires to protect your kids for you.
Reposted by David Andersen
ice agents simply aren't trained well enough to be on the street. they are a genuine danger to citizens
January 7, 2026 at 6:57 PM
ice agents simply aren't trained well enough to be on the street. they are a genuine danger to citizens
Reposted by David Andersen
Wow.
Block has done incalculable damage to local media.
Block has done incalculable damage to local media.
Post-Gazette to publish final edition and cease operations on May 3
The owners of the Pittsburgh Post-Gazette announced Wednesday that the newspaper will cease publication Sunday, May 3.
Over the past 20 years, Block Communications...
www.post-gazette.com
January 7, 2026 at 6:27 PM
Wow.
Block has done incalculable damage to local media.
Block has done incalculable damage to local media.
Reposted by David Andersen
NEW: Publishers of the Pittsburgh Post-Gazette announce they are shutting down the newspaper on May 3, 2026.
Hours ago, the Supreme Court of the US declined to extend a stay on a court order for the paper to pay its journalists following the end of a 3-year strike.
Hours ago, the Supreme Court of the US declined to extend a stay on a court order for the paper to pay its journalists following the end of a 3-year strike.
January 7, 2026 at 6:31 PM
NEW: Publishers of the Pittsburgh Post-Gazette announce they are shutting down the newspaper on May 3, 2026.
Hours ago, the Supreme Court of the US declined to extend a stay on a court order for the paper to pay its journalists following the end of a 3-year strike.
Hours ago, the Supreme Court of the US declined to extend a stay on a court order for the paper to pay its journalists following the end of a 3-year strike.
Reposted by David Andersen
Morning! Here is today’s air quality forecast for Allegheny County.
*Not mentioned: today’s H2S concentrations that AGAIN exceed the PA 24-hr standard in Mon Valley.
*Not mentioned: today’s H2S concentrations that AGAIN exceed the PA 24-hr standard in Mon Valley.
January 7, 2026 at 1:46 PM
Morning! Here is today’s air quality forecast for Allegheny County.
*Not mentioned: today’s H2S concentrations that AGAIN exceed the PA 24-hr standard in Mon Valley.
*Not mentioned: today’s H2S concentrations that AGAIN exceed the PA 24-hr standard in Mon Valley.
2026 may be starting out like eating a bag of rocks*, but at least we get apple reviews!
(The reviews are typically better than the apples, which is good, since you don't have to eat the reviews)
* I don't mean rocks.
(The reviews are typically better than the apples, which is good, since you don't have to eat the reviews)
* I don't mean rocks.
THE APPLE REVIEWS CONTINUE UNTIL MORALE IMPROVES
Today: a Lemonade apple.
Today: a Lemonade apple.
Apple Review #40: Lemonade Apple
It is the new year, and the apple reviews persist. What, did you think they would stop? THE APPLE REVIEWS CONTINUE UNTIL MORALE IMPROVES. Anyway, today, my mind is a bit on branding. I am on the re…
terribleminds.com
January 7, 2026 at 2:15 PM
2026 may be starting out like eating a bag of rocks*, but at least we get apple reviews!
(The reviews are typically better than the apples, which is good, since you don't have to eat the reviews)
* I don't mean rocks.
(The reviews are typically better than the apples, which is good, since you don't have to eat the reviews)
* I don't mean rocks.
Reposted by David Andersen
What the bad people think happens...
Any Mom: I have questions about the infant vaccines.
Me: Fuck you antivaxxer. Good luck on finding new doctor as great as I am.
What actually happens...
Mom: I have some vaccine questions.
Me: Sure, lets talk about each one and why I want your baby to get them.
Any Mom: I have questions about the infant vaccines.
Me: Fuck you antivaxxer. Good luck on finding new doctor as great as I am.
What actually happens...
Mom: I have some vaccine questions.
Me: Sure, lets talk about each one and why I want your baby to get them.
January 6, 2026 at 6:20 PM
What the bad people think happens...
Any Mom: I have questions about the infant vaccines.
Me: Fuck you antivaxxer. Good luck on finding new doctor as great as I am.
What actually happens...
Mom: I have some vaccine questions.
Me: Sure, lets talk about each one and why I want your baby to get them.
Any Mom: I have questions about the infant vaccines.
Me: Fuck you antivaxxer. Good luck on finding new doctor as great as I am.
What actually happens...
Mom: I have some vaccine questions.
Me: Sure, lets talk about each one and why I want your baby to get them.
This is one of the stupidest and most self-destructive public health choices the US has ever made. It will cost us literally billions of dollars in increased care costs, force millions of children to have unnecessary infections (& some traumatic for parent & child hospitalizations), + deaths.
The CDC changed the universal vaccine schedule & no longer recommends
Rotavirus
Hepatitis A & B
Meningitis
Influenza
RSV
I’ve cared for previously healthy kids who died from RSV, influenza and meningitis.
We all are going to be caring for a lot more now.
In our already overflowing hospitals
Rotavirus
Hepatitis A & B
Meningitis
Influenza
RSV
I’ve cared for previously healthy kids who died from RSV, influenza and meningitis.
We all are going to be caring for a lot more now.
In our already overflowing hospitals
January 6, 2026 at 6:07 PM
This is one of the stupidest and most self-destructive public health choices the US has ever made. It will cost us literally billions of dollars in increased care costs, force millions of children to have unnecessary infections (& some traumatic for parent & child hospitalizations), + deaths.
Don't threaten me with a good time
President Trump, speaking to House GOP members, says if the Democrats take control of the chamber after this November’s midterm elections, “they’ll impeach me.”
January 6, 2026 at 4:36 PM
Don't threaten me with a good time