Petter Holme
@pholme.bsky.social
Scandinasian professor of network science & computational social science
Reposted by Petter Holme
New preprint out with @elspethready.bsky.social : "The emergence of sharing networks through indirect signaling".
osf.io/preprints/so...
osf.io/preprints/so...
OSF
osf.io
December 16, 2025 at 11:50 PM
New preprint out with @elspethready.bsky.social : "The emergence of sharing networks through indirect signaling".
osf.io/preprints/so...
osf.io/preprints/so...
I think the first to go all in on "reality is made of information" was Konrad Zuze, whose Rechnender Raum is a psychedelic read. Interesting even though I don't think there is much reality in the information it provides.
Seems to be a losing battle to make people understand that Wheeler's "It from Bit" does not mean "reality is made of information" (it was about defending an epistemic view of quantum mechanics, where the wave function isn't real, only measurement outcomes are), and likewise...
December 16, 2025 at 7:59 AM
I think the first to go all in on "reality is made of information" was Konrad Zuze, whose Rechnender Raum is a psychedelic read. Interesting even though I don't think there is much reality in the information it provides.
Reposted by Petter Holme
The Christmas edition of Cabinet of Infographic Curiosities is out now! attilabatorfy.substack.com/p/christmas-...
December 15, 2025 at 2:31 PM
The Christmas edition of Cabinet of Infographic Curiosities is out now! attilabatorfy.substack.com/p/christmas-...
Reposted by Petter Holme
Abd ar-Rahman al-Sufi. Book of Fixed Stars, 964 CE. Illustrations from 1417. Manuscript reproduced 1730
The constellation Orion
The constellation Orion
October 2, 2025 at 10:40 PM
Abd ar-Rahman al-Sufi. Book of Fixed Stars, 964 CE. Illustrations from 1417. Manuscript reproduced 1730
The constellation Orion
The constellation Orion
Reposted by Petter Holme
Blog time! 📯
We feel that we understand things when certain patterns of explanations are in place. If reality doesn't follow those patterns, our understanding suffers. On to the third such eureka fallacy I've blogged about: explanation by optimization.
petterhol.me/2025/12/10/t...
We feel that we understand things when certain patterns of explanations are in place. If reality doesn't follow those patterns, our understanding suffers. On to the third such eureka fallacy I've blogged about: explanation by optimization.
petterhol.me/2025/12/10/t...
The eureka fallacy of optimization
When we learn things by studying or doing research, we perceive understanding as coming to us in step-like a-ha moments.1 I will argue that these moments happen more likely when we recognize (or ma…
petterhol.me
December 10, 2025 at 12:55 PM
Blog time! 📯
We feel that we understand things when certain patterns of explanations are in place. If reality doesn't follow those patterns, our understanding suffers. On to the third such eureka fallacy I've blogged about: explanation by optimization.
petterhol.me/2025/12/10/t...
We feel that we understand things when certain patterns of explanations are in place. If reality doesn't follow those patterns, our understanding suffers. On to the third such eureka fallacy I've blogged about: explanation by optimization.
petterhol.me/2025/12/10/t...
Blog time! 📯
We feel that we understand things when certain patterns of explanations are in place. If reality doesn't follow those patterns, our understanding suffers. On to the third such eureka fallacy I've blogged about: explanation by optimization.
petterhol.me/2025/12/10/t...
We feel that we understand things when certain patterns of explanations are in place. If reality doesn't follow those patterns, our understanding suffers. On to the third such eureka fallacy I've blogged about: explanation by optimization.
petterhol.me/2025/12/10/t...
The eureka fallacy of optimization
When we learn things by studying or doing research, we perceive understanding as coming to us in step-like a-ha moments.1 I will argue that these moments happen more likely when we recognize (or ma…
petterhol.me
December 10, 2025 at 12:55 PM
Blog time! 📯
We feel that we understand things when certain patterns of explanations are in place. If reality doesn't follow those patterns, our understanding suffers. On to the third such eureka fallacy I've blogged about: explanation by optimization.
petterhol.me/2025/12/10/t...
We feel that we understand things when certain patterns of explanations are in place. If reality doesn't follow those patterns, our understanding suffers. On to the third such eureka fallacy I've blogged about: explanation by optimization.
petterhol.me/2025/12/10/t...
Reposted by Petter Holme
Join us today @cudanlab.bsky.social
for a lecture and discussion with
Corinna Coupette of @aalto.fi in person
@dataspider.bsky.social 💽🕷️
on Computational Perspectives on Legal Systems 🤖🔭⚖️
16:00-18:00 Tallinn time UTC+2 🇪🇪🇪🇺🌍
5.5 hours from this post.
Details & zoom:
cudan.tlu.ee/events/2025-...
for a lecture and discussion with
Corinna Coupette of @aalto.fi in person
@dataspider.bsky.social 💽🕷️
on Computational Perspectives on Legal Systems 🤖🔭⚖️
16:00-18:00 Tallinn time UTC+2 🇪🇪🇪🇺🌍
5.5 hours from this post.
Details & zoom:
cudan.tlu.ee/events/2025-...
Corinna Coupette – CUDAN Lecture
When: 2025-12-08 16:00-18:00 (Tallinn time)
Where: A108 & online
The event is public via zoom:
https://zoom.us/j/94629959885?pwd=2NktNsXm0SzbzwwmfGbqlk5UZQoARw.1
Meeting ID: 946 2995 9885 Passcode: 00...
cudan.tlu.ee
December 8, 2025 at 8:36 AM
Join us today @cudanlab.bsky.social
for a lecture and discussion with
Corinna Coupette of @aalto.fi in person
@dataspider.bsky.social 💽🕷️
on Computational Perspectives on Legal Systems 🤖🔭⚖️
16:00-18:00 Tallinn time UTC+2 🇪🇪🇪🇺🌍
5.5 hours from this post.
Details & zoom:
cudan.tlu.ee/events/2025-...
for a lecture and discussion with
Corinna Coupette of @aalto.fi in person
@dataspider.bsky.social 💽🕷️
on Computational Perspectives on Legal Systems 🤖🔭⚖️
16:00-18:00 Tallinn time UTC+2 🇪🇪🇪🇺🌍
5.5 hours from this post.
Details & zoom:
cudan.tlu.ee/events/2025-...
Yes, I used to be so much into this! Armchair deglobalization at its best.
The more exotic the better, so prayer-heavy Sahelian stations like radio.garden/listen/radio... are high on my list.
The more exotic the better, so prayer-heavy Sahelian stations like radio.garden/listen/radio... are high on my list.
December 7, 2025 at 8:25 PM
Yes, I used to be so much into this! Armchair deglobalization at its best.
The more exotic the better, so prayer-heavy Sahelian stations like radio.garden/listen/radio... are high on my list.
The more exotic the better, so prayer-heavy Sahelian stations like radio.garden/listen/radio... are high on my list.
Today's algorithmic art:
"Verteilung elementarer Zeichen" by F. Nake, 1965. From "Bit-1: Teorija Informacija I Nova Estetika."
"Verteilung elementarer Zeichen" by F. Nake, 1965. From "Bit-1: Teorija Informacija I Nova Estetika."
December 2, 2025 at 12:40 PM
Today's algorithmic art:
"Verteilung elementarer Zeichen" by F. Nake, 1965. From "Bit-1: Teorija Informacija I Nova Estetika."
"Verteilung elementarer Zeichen" by F. Nake, 1965. From "Bit-1: Teorija Informacija I Nova Estetika."
Reposted by Petter Holme
Time for another mixtape to get you into that wintery mood. 🎶 A cassette-friendly 90 min, of course.
open.spotify.com/playlist/15s...
open.spotify.com/playlist/15s...
Winter '25
open.spotify.com
November 26, 2025 at 1:04 PM
Time for another mixtape to get you into that wintery mood. 🎶 A cassette-friendly 90 min, of course.
open.spotify.com/playlist/15s...
open.spotify.com/playlist/15s...
Time for another mixtape to get you into that wintery mood. 🎶 A cassette-friendly 90 min, of course.
open.spotify.com/playlist/15s...
open.spotify.com/playlist/15s...
Winter '25
open.spotify.com
November 26, 2025 at 1:04 PM
Time for another mixtape to get you into that wintery mood. 🎶 A cassette-friendly 90 min, of course.
open.spotify.com/playlist/15s...
open.spotify.com/playlist/15s...
Network of the day. From R Riedl's "Structures of Complexity"
November 24, 2025 at 10:17 AM
Network of the day. From R Riedl's "Structures of Complexity"
Network of the day: States of poverty and corresponding actions from charity organizations from Mohr & Duquenne (1997) via @netsciconf.bsky.social
November 22, 2025 at 7:22 AM
Network of the day: States of poverty and corresponding actions from charity organizations from Mohr & Duquenne (1997) via @netsciconf.bsky.social
Reposted by Petter Holme
New, spicy competitor for Zachary's Karate Club just dropped
Max Andrews @thatsjustlikeyouropinionman.com has converted the Epstein email drop into a searchable, visualized, network that allows you to explore relationships among the actors and examine the nature of their connections. You'll find D. Trump in the "yolk." 👏Max
epstein-doc-explorer-1.onrender.com
epstein-doc-explorer-1.onrender.com
network-ui
epstein-doc-explorer-1.onrender.com
November 15, 2025 at 4:32 AM
New, spicy competitor for Zachary's Karate Club just dropped
Reposted by Petter Holme
We're excited to announce that the website and registration for IC2S2 2026 (July 28-31) will launch in early December! The Vermont Complex Systems Institute @vcsi.bsky.social at the University of Vermont will be hosting IC2S2 in 2026: youtube.com/watch?v=p412S4GnPkc&feature=youtu.be
IC2S2 2026 | Burlington, Vermont
YouTube video by UVM Office of Research
youtube.com
November 13, 2025 at 3:36 PM
We're excited to announce that the website and registration for IC2S2 2026 (July 28-31) will launch in early December! The Vermont Complex Systems Institute @vcsi.bsky.social at the University of Vermont will be hosting IC2S2 in 2026: youtube.com/watch?v=p412S4GnPkc&feature=youtu.be
Reposted by Petter Holme
@mtsvetkova.bsky.social is a panellist at the International Society for Computational Social Science (ISCSS) first-ever "Ask Me Anything" webinar, focused on PhD admissions!
🗓️ Nov 19 3.00pm ET
💻Online
Register➡️ umich.zoom.us/webinar/regi....
💬 Submit questions: docs.google.com/forms/d/e/1F...
🗓️ Nov 19 3.00pm ET
💻Online
Register➡️ umich.zoom.us/webinar/regi....
💬 Submit questions: docs.google.com/forms/d/e/1F...
November 11, 2025 at 4:55 PM
@mtsvetkova.bsky.social is a panellist at the International Society for Computational Social Science (ISCSS) first-ever "Ask Me Anything" webinar, focused on PhD admissions!
🗓️ Nov 19 3.00pm ET
💻Online
Register➡️ umich.zoom.us/webinar/regi....
💬 Submit questions: docs.google.com/forms/d/e/1F...
🗓️ Nov 19 3.00pm ET
💻Online
Register➡️ umich.zoom.us/webinar/regi....
💬 Submit questions: docs.google.com/forms/d/e/1F...
Reposted by Petter Holme
Join us on Thursday, 6 November, at 14:30 CET for the International Roundtable on Computational Social Science with @ajalvero.bsky.social 🔹 Generative AI and Sociology: The Good, the Bad, and the Beautiful 🔹 More info: liu.se/en/article/s...
Seminars and lectures at IAS
Welcome to IAS public lectures and seminars.
liu.se
October 31, 2025 at 9:39 AM
Join us on Thursday, 6 November, at 14:30 CET for the International Roundtable on Computational Social Science with @ajalvero.bsky.social 🔹 Generative AI and Sociology: The Good, the Bad, and the Beautiful 🔹 More info: liu.se/en/article/s...
Network of the day.
From: Kuligowski, E.D. (2016). Human Behavior in Fire. In: Hurley, M.J., et al. SFPE Handbook of Fire Protection Engineering. Springer, New York, NY.
From: Kuligowski, E.D. (2016). Human Behavior in Fire. In: Hurley, M.J., et al. SFPE Handbook of Fire Protection Engineering. Springer, New York, NY.
November 3, 2025 at 8:45 PM
Network of the day.
From: Kuligowski, E.D. (2016). Human Behavior in Fire. In: Hurley, M.J., et al. SFPE Handbook of Fire Protection Engineering. Springer, New York, NY.
From: Kuligowski, E.D. (2016). Human Behavior in Fire. In: Hurley, M.J., et al. SFPE Handbook of Fire Protection Engineering. Springer, New York, NY.
Reposted by Petter Holme
For us, this journey toward explaining *surprising macro outcomes* took many years. Grateful to my amazing co-authors, @martinarvidsson.bsky.social and Peter Hedström, and to all the reviewers who supported us along the way
🚀Out now: sociologicalscience.com/articles-v12...
🚀Out now: sociologicalscience.com/articles-v12...
October 24, 2025 at 2:04 PM
For us, this journey toward explaining *surprising macro outcomes* took many years. Grateful to my amazing co-authors, @martinarvidsson.bsky.social and Peter Hedström, and to all the reviewers who supported us along the way
🚀Out now: sociologicalscience.com/articles-v12...
🚀Out now: sociologicalscience.com/articles-v12...
Network of the day.
From: Briggs & Peat, Turbulent Mirror, 1989.
From: Briggs & Peat, Turbulent Mirror, 1989.
October 23, 2025 at 7:07 PM
Network of the day.
From: Briggs & Peat, Turbulent Mirror, 1989.
From: Briggs & Peat, Turbulent Mirror, 1989.
Reposted by Petter Holme
🔈Job Alert!
Swedish Excellence Center in Computational Social Science (SWECSS) is hiring postdoctoral researchers. Positions are available at IAS and the Department of Computer Science (IDA).
⌛Deadline: 31 October
IAS: liu.se/en/work-at-l...
IDA: liu.se/en/work-at-l...
#academicsky #css
Swedish Excellence Center in Computational Social Science (SWECSS) is hiring postdoctoral researchers. Positions are available at IAS and the Department of Computer Science (IDA).
⌛Deadline: 31 October
IAS: liu.se/en/work-at-l...
IDA: liu.se/en/work-at-l...
#academicsky #css
October 21, 2025 at 7:01 PM
🔈Job Alert!
Swedish Excellence Center in Computational Social Science (SWECSS) is hiring postdoctoral researchers. Positions are available at IAS and the Department of Computer Science (IDA).
⌛Deadline: 31 October
IAS: liu.se/en/work-at-l...
IDA: liu.se/en/work-at-l...
#academicsky #css
Swedish Excellence Center in Computational Social Science (SWECSS) is hiring postdoctoral researchers. Positions are available at IAS and the Department of Computer Science (IDA).
⌛Deadline: 31 October
IAS: liu.se/en/work-at-l...
IDA: liu.se/en/work-at-l...
#academicsky #css
arXiv alert! 📄🚨
A review paper about the physics of news, rumors, and opinions
arxiv.org/abs/2510.15053
w @manlius.bsky.social @sarawalk.bsky.social Guido Cadarelli et al.
A review paper about the physics of news, rumors, and opinions
arxiv.org/abs/2510.15053
w @manlius.bsky.social @sarawalk.bsky.social Guido Cadarelli et al.
The Physics of News, Rumors, and Opinions
The boundaries between physical and social networks have narrowed with the advent of the Internet and its pervasive platforms. This has given rise to a complex adaptive information ecosystem where ind...
arxiv.org
October 20, 2025 at 6:32 AM
arXiv alert! 📄🚨
A review paper about the physics of news, rumors, and opinions
arxiv.org/abs/2510.15053
w @manlius.bsky.social @sarawalk.bsky.social Guido Cadarelli et al.
A review paper about the physics of news, rumors, and opinions
arxiv.org/abs/2510.15053
w @manlius.bsky.social @sarawalk.bsky.social Guido Cadarelli et al.
Network of the day, from: Live Fyrand, "Sosialt Nettverk: Teori og Praktikk", 1994.
October 19, 2025 at 9:13 PM
Network of the day, from: Live Fyrand, "Sosialt Nettverk: Teori og Praktikk", 1994.
Reposted by Petter Holme
Reminder: Last chance to apply for our postdoc positions in polarisation + mental well-being: www.aalto.fi/en/open-posi...
Open postdoctoral and doctoral positions to work on polarization and mental health | Aalto University
You will be working in the research group of one of the PIs of the projects, but in collaboration with the others. The PIs are Talayeh Aledavood, Juhi Kulshrestha, and Mikko Kivelä.
www.aalto.fi
October 10, 2025 at 7:49 PM
Reminder: Last chance to apply for our postdoc positions in polarisation + mental well-being: www.aalto.fi/en/open-posi...