dave
LightNews LightNews
banner
daveliepmann.com
dave
@daveliepmann.com
450 followers 450 following 900 posts
berlin
tech bro
luddite
cargo bike & bahn dad
prehistory fanboy
Posts Replies Media Videos
Pinned
daveliepmann.com
dave @daveliepmann.com · Nov 21
Photos on my phone tagged “cycling with kids propaganda”

- girls huddling under a blanket together on the way home from the park
- hauling girls to a birthday party (with their bike)
- wandering around the city with the toddler
Man in summer clothes riding cargo bike with two girls in the bucket Woman riding cargo bike with two girls in the bucket Man straddling his bike, kissing baby in the front seat
Reposted by dave
clojureberlin.bsky.social
We are having a casual Get Together this Thursday 12th of February (I know it's short notice). No talk lined up, just casual chat.

clojure.berlin/events/2026-...
Get together drinks @ Trespassers
clojure.berlin
February 9, 2026 at 10:04 AM
daveliepmann.com
New LLM metaphor just dropped

"a prolific programmer who pumps out code far faster than others but works in a totally tactical fashion" – a mode long adored by management

olano.dev/blog/tactica...
Tactical tornado is the new default
The more work we delegate to LLMs, the closer we are to becoming tactical tornadoes ourselves.
olano.dev
February 7, 2026 at 9:29 AM
daveliepmann.com
The developer of a code counting tool ranked popular proglangs by density. I am not surprised that "according to the data, if you want the highest ratio of human thought to keystrokes, the winner is the 60 year old concept, Lisp running as a modern JVM language Clojure."

boyter.org/posts/boiler...
Clojure and indeed all lisp style languages are the final boss of density here though. Almost every line is an expression of business logic. I never really got into it myself, but looking at these results are starting to make me rethink that decision. If you compare Clojure (77.91%) to C# (58.4%), it seems the average C# developer writes 20% more redundant code every single day just to satisfy the compiler. Even with tools like resharper and LLM’s to help thats not a insignificant amount of effort.
February 6, 2026 at 7:24 PM
Reposted by dave
jugander.bsky.social
Most unusual SI/methods write-up I've seen in a while: Digging in Utah scrapbooks for hair samples to document historic lead levels. Remarkable findings, note the log-scaled y-axis.
February 3, 2026 at 3:13 PM
daveliepmann.com
I murmured to myself “nice” upon reading the highlighted text. I mean, 🐐 milk, 🐑 yogurt, plums and hot cakes? 😋 A nice lifestyle.

Tapped the note from ~2011 and it reads “sounds good to me” 😂
The first indigenous North Pontic people to adopt Cris cattle breeding and perhaps also the Cris word for bull were the people of the Bug-Dniester culture, introduced a few pages ago. They occupied the frontier where the expansion of the Cris farmers came to a halt, apparently blocked by the Bug-Dniester culture itself. The initial contact between farmers and foragers must have been a fascinating event. The Cris immigrants brought herds of cultured animals that wandered up the hillsides among the deer. They introduced sheep, plum orchards, and hot wheat-cakes. Their families lived in the same place all year, year after year; they cut down the trees to make houses and orchards and gardens; and they spoke a foreign language. The foragers' language might have been part of the broad language family from which Proto-Indo-European later emerged, although, since the ultimate fate of the Bug-Dniester culture was extinction and assimilation, their dialect probably died with their culture.
January 29, 2026 at 4:06 PM
Reposted by dave
alcreed.bsky.social
The No Take / Only Throw dog comic translated into Sumerian
January 28, 2026 at 7:30 PM
Reposted by dave
drun.v25media.com
Have fun with computers
January 29, 2026 at 10:51 AM
daveliepmann.com
Cloudflare wtf
tech.lgbt/@JadedBlueEy...
Jade (@JadedBlueEyes@tech.lgbt)
Cloudflare just published a vibe coded blog post claiming they implemented Matrix on cloudflare workers. They didn't, their post and README is AI generated and the code doesn't do any of the core part...
tech.lgbt
January 29, 2026 at 9:49 AM
daveliepmann.com
I exist because my grandfather fled Berlin “too early” in ‘34, when he was merely prohibited from some forms of practicing medicine.

It’s okay to see the writing on the wall!
stephenjacobsmith.com Stephen Jacob Smith @stephenjacobsmith.com · 14d
I had a relative who literally hid with Anne Frank in that attic. If you cannot be accused of exaggerating, it’s too late. Once they’re marching kids into gas chambers, it’s too late.
usatoday.com USA TODAY @usatoday.com · 15d
The Minnesota governor is getting widespread criticism for comparing children dealing with immigration enforcement to Holocaust victim Anne Frank.
January 28, 2026 at 6:18 PM
daveliepmann.com
I didn’t understand this talk on first viewing but now I am smitten. Brb re-reading The Horse, The Wheel, and Language. www.youtube.com/watch?v=HU-u...
UnifyBio: Power Tools for Translational Data Science - Benjamin Kamphaus
YouTube video by ClojureTV
www.youtube.com
January 28, 2026 at 9:31 AM
Reposted by dave
sumosoul.bsky.social
Day15 yūshō playoff!
Oz Aonishiki
M4 Atamifuji
For a second straight shin-ōzeki yūshō or a first time yūshō for Atamifuji! And it’s a worthy battle! Sumo delivers! #hatsubasho2026
January 25, 2026 at 8:51 AM
Reposted by dave
johnhawks.net
This is a deep dive into the details of how Neanderthal ancestry is patterned across ancient genomes of modern people. A wave of mixture starting in the Near East kept mixing as long as the expanding group kept meeting Neanderthals, from France to Central Asia.

www.johnhawks.net/p/tracing-th...
Tracing the wave of Neanderthal-modern interactions
A rapid expansion of modern people ran into Neanderthals and mixed with them nearly to the ends of their range.
www.johnhawks.net
January 27, 2026 at 1:25 PM
daveliepmann.com
Exploiting Türkçe's grammar and regularity to create a toy proglang, neat

github.com/kip-dili/kip
January 18, 2026 at 3:25 PM
Reposted by dave
buttpraxis.bsky.social
Hello #designsky! My YouTube show wants to hire a real human artist to design a logo for us! If you want to design a logo for a YouTube channel about clojure, my DMs are open!
January 15, 2026 at 8:38 PM
Reposted by dave
lemoustier.bsky.social
🏺 Vogelherd, the OG horse, 40,000 years ago 🐎

(the detail you can see playing with this 3D model is insane)

skfb.ly/6zJ8H
January 4, 2026 at 9:24 PM
daveliepmann.com
December 30, 2025 at 3:29 PM
daveliepmann.com
Urban living in pre-Song China is straight out of a right-wing 15 minute cities conspiracy theory

(Johan Norberg, Peak Human: What we can learn from the rise and fall of golden ages)
December 29, 2025 at 10:16 AM
Reposted by dave
codendahl.bsky.social
A residential parking permit should cost its €42 admin costs (obviously) plus €365 parking fee (surely €1 per day is low?) plus about €400 rent for public space (again, low) in the central parts.

Roughly €800 is a bit closer to the true, economic costs of downtown car ownership in #Berlin.
October 13, 2025 at 6:08 PM
Reposted by dave
drun.v25media.com
Flocking Quadtrees in Clojure

www.lbjgruppen.com/en/posts/flo...

#boids #clojure #lisp #graphics #simulation
Flocking Quadtrees
Learn how to make a flocking simulation using Quadtrees and Clojurescript. It's a revisit of last weeks post about Functional Quadtrees.
www.lbjgruppen.com
December 22, 2025 at 10:48 AM
daveliepmann.com
humantransit.org/basics-the-m...
Let’s start with the basic math. Really great transit generates high land value around stations. Free parking presumes low land value around stations. It’s a contradiction. A Park-and-Ride that fills up at 7 AM is effectively one that doesn’t exist over much of the time period when it’s supposedly needed. This loss of utility for people who travel later is a direct consequence of the price subsidy, as the artificially low price prevents the transit agency and its customers from reaching a market equilibrium where supply and demand of parking are in balance. (This equilibrium, of course, would be optimal for both ridership and revenue. Parking that fills up too soon drives away riders as effectively as no parking would.)
December 6, 2025 at 10:12 AM
daveliepmann.com
Love cycling westward on Karl-Marx-Straße because it’s a kilometer-&-a-half long traffic jam for cars every time, and I get to sail by until almost Hermannplatz. 🚲 🚲 🚲
December 4, 2025 at 8:16 PM
daveliepmann.com
"Vehicles shouldn't be able to pass safety tests by making the roads more dangerous for everyone else."

Keep 🇺🇸 death machines off 🇪🇺 streets!

youtu.be/--832LV9a3I?...

@press.europarl.europa.eu @socialistsanddemocrats.eu @left.eu @efagroup.bsky.social @reneweurope.bsky.social
Keep these Stupid American Trucks out of Europe
YouTube video by Not Just Bikes
youtu.be
November 30, 2025 at 4:22 PM
Reposted by dave
baltimorebrew.bsky.social
"Why I lost faith in zoning." tinyurl.com/5n8sh428 Baltimore’s former zoning board executive director, on why she supports @mayorbmscott.bsky.social bills to promote more density and multi-family housing in the city. [OP-ED]
Baltimore’s former zoning board director explains why she lost faith in zoning | Baltimore Brew
The mayor’s “Housing Options and Opportunity” legislation – including Bill 25-0066 – will go a long way toward fixing an unfair system. [OP-ED]
tinyurl.com
November 24, 2025 at 12:39 PM
Reposted by dave
fogus.me
This!
Upgrading versions of Clojure is a breeze!
November 16, 2025 at 7:48 PM
Reposted by dave
misernyc.bsky.social
As I've said, I actually support the limits on micromobility, but they have to be paired with ones that are the same or slower for cars. I've long called for 20 across the board on anything that moves in NYC. A system that vilifies ebikes and suggests we're more dangerous than cars is insane.
October 22, 2025 at 1:11 PM