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Roope Kaaronen

@roopekaaronen.net
2K followers 570 following 2.6K posts

Forager of information and mushrooms • "String theorist" • Cognitive science, cultural evolution, cognitive anthropology, ethnomathematics • roopekaaronen.net • Kayaking, music, nature, photography

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Reposted by Roope Kaaronen
Dia VanGunten / Writer @pinkzombierose.bsky.social · 18h
This is a real book. 🤯
THE TRIP IS YOURS

TAKING MUSHROOMS AND GOING TO WALMART

WRITTEN BY B THE AUTHOR

SQUICHE
$ 425
1339140 3263 K MART 7529

Illustration in the style of the old choose your adventure stories. I’m
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ꭓle Ormsby 𓆙 @e-infinity.space · 29/09/2026
topology ∩ archaeology #MathSky
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Roope Kaaronen @roopekaaronen.net · 29/09/2026
Mathematicians studied knots under "knot theory" for about a quarter of a millenium, but never analysed what kinds of knots humans have actually tied. In this paper we applied knot theory to study human-made knots spanning over ten millennia. Turns out some of our everyday knots are very old.
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Roope Kaaronen @roopekaaronen.net · 29/09/2026
a pier / a disapier
A pier (in Helsinki by the calm Baltic sea, mostly in good shape with common eiders in the background)A disapier (a pier by the Baltic sea, but all the planks are missing)
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Roope Kaaronen @roopekaaronen.net · 29/09/2026
Yeah, whatever you think of contemporary anthropology, this isn't a rigorous assessment and should've at most been a blog post. If a junior scholar wrote this report, no one would care. It's all prestige bias (ironic, isn't it).
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Roope Kaaronen @roopekaaronen.net · 29/09/2026
Truly one of the highlights of my research career. It's a major honour to answer a children's science question, especially with my bucket expert* hat on. As father of a one-year-old, I know how important buckets are. (Very important.)
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Janne M. Korhonen @jmkorhonen.fi · 28/09/2026
The very best regular feature in the Finnish newspaper Helsingin Sanomat is the children's science questions. It is a great shame that adults usually are too embarrassed to ask what they think "stupid" questions. Like "if everything is bigger in America, does that apply to buckets too?" (Yes!)
hs.fi
Lasten tiedekysymykset | Jos Amerikassa kaikki on isompaa, koskeeko se myös ämpäreitä?
Pohdimme myös, miksi puhelinnumerot alkavat nollalla ja missä ihmisessä on eniten verta. Entä miksi sateenkaari on kaari?
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Many Minds podcast @manymindspod.bsky.social · 28/09/2026
New episode!! 🎉🎙️ A conversation w/ @samgilbert.bsky.social all about cognitive offloading. We humans have long used tools to help us remember and reason. But as new technologies emerge, it's a good time to take stock: What does offloading do for us—and to us? Listen: disi.org/cognitive-of...
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Roope Kaaronen @roopekaaronen.net · 28/09/2026
A fun episode on one of my favourite topics, cognitive offloading. Offloading (to our body, culture, technology, environment!) is one of the human superpowers, if you may. And now, for better or for worse, it's being taken to the extreme.
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Roope Kaaronen @roopekaaronen.net · 27/09/2026
Did you know humans around the world have made string figures (cat's cradles)? And even stranger, the exact same figures to surprising degrees of complexity. In the thread below, we try to unravel this mystery:
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Carausius @carausius286.bsky.social · 28/09/2026
A Roman mosaic of snails escaping a basket. 🏛️ Basilica Patricale, Aquileia 🇮🇹 🕰️ 4th century AD #MosaicMonday
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Roope Kaaronen @roopekaaronen.net · 28/09/2026
One of the most annoying aspects of hyperbureaucracy is the admins of organisations are so overloaded with paperwork that other employees need to jump through extra hoops to even contact admin (e.g., reminder emails).
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noam @noamchompers.bsky.social · 27/09/2026
Postdoc appreciation week is over, so please, STOP appreciating postdocs. They will get some more appreciation next year
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Roope Kaaronen @roopekaaronen.net · 28/09/2026
Haluaisin nähdä mallinnuksen siitä, mihin kunkin väestöryhmän ostovoima kanavoituu. Nimittäin kuvittelisin, että parempiosaisten ostovoima kohdistuu pikemminkin ulkomaisiin arvopapereihin kuin kotimaisen kysynnän kasvattamiseen tai edes kotimaisiin investointeihin. Itseään ruokkiva surkeuden kehä.
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Roope Kaaronen @roopekaaronen.net · 27/09/2026
Did you know humans around the world have made string figures (cat's cradles)? And even stranger, the exact same figures to surprising degrees of complexity. In the thread below, we try to unravel this mystery:
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Roope Kaaronen @roopekaaronen.net · 27/09/2026
Everyone's talking about cognitive "friction" these days, so let me tell you: If you want to experience true friction, learn to play a new instrument as an adult. It's very healthy. You know you'll never be that good, comparatively, so it has to be for the sake of pure experience.
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Roope Kaaronen @roopekaaronen.net · 27/09/2026
It's going quite well. Although, now practicing Linus and Lucy by Vince Guaraldi, I've noticed that hand independence doesn't transfer that smoothly from guitar to piano. Even though I'm quite a competent finger-picker on the guitar, this seems like an entire new world of simultaneous mindfuckery.
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Maima Tani @maimatani.bsky.social · 27/09/2026
#ammonites #crochet #art #autismart #finnishartist
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Alison Fisk @alisonfisk.bsky.social · 25/09/2026
Smile, it’s Friday! 😃 Meet ‘The Oldest Smile in the World’ a tiny face that’s been smiling for some 7,400 years! Carved from oak during the Mesolithic, this small human figure was found in 1966 in a layer of peat during dock construction at Willemstad in the Netherlands. #FindsFriday #Archaeology
My photo shows a human figure roughly carved from dark brown oak wood during the Mesolithic period about 5,400-5,300 BC. It is 12.5 cm tall with a long body with two finger-shaped indents on the right hand side (left in my photo), suggesting it was made to be held in the hand. The stylized head has deeply carved eyes, nose, and open mouth. The triangular shape of the mouth makes it look as if the figure is smiling, leading to its description as ‘The oldest smile in the world’. It is displayed against a black display case background at Landesmuseum Halle in Germany where the figure is currently on loan for the ‘Shamaness’ exhibition. It is part of the permanent collections of Rijksmuseum van Oudheden, Leiden, Netherlands. It was found in a layer of peat in 1966 during the construction of a dock at Willemstad, North Brabant, Netherlands.
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Kari Hiitola @kari.hiitola.net · 25/09/2026
Harvoin on "View full thread" -sormea syyhyttänyt näin paljon.
Kuvakaappaus tästä ketjusta:
Aina se unohtuu, kuinka pohjimmiltaan fasistinen maa Suomi onkaan.

View full thread

<mustikkapiirakan resepti>
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Roope Kaaronen @roopekaaronen.net · 25/09/2026
A good peer-review is one from which you actually learn something new. With the current round of reviews I'm working on, I've already learned a few things that'll be useful later on.
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Roope Kaaronen @roopekaaronen.net · 25/09/2026
The largest newspaper in Finland has a fantastic column where, each Friday, children get to ask science questions. It's been my dream to contribute for years. More meaningful than any award. And I finally got to answer!
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Roope Kaaronen @roopekaaronen.net · 25/09/2026
Aamun Hesarissa pohdin syntyjä syviä. www.hs.fi/tiede/art-20...
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Roope Kaaronen @roopekaaronen.net · 24/09/2026
Blackbirb.
Blackbird perching on a rhododendron.
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Roope Kaaronen @roopekaaronen.net · 24/09/2026
Hey, look, my kayak practice pool is in The Guardian. That's where I roll. www.theguardian.com/travel/2026/...
theguardian.com
Taking a deep dive in Helsinki’s subterranean city
Under the Finnish capital lies a world of swimming pools, go-karting tracks, playgrounds – and even an art gallery
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Roope Kaaronen @roopekaaronen.net · 23/09/2026
Speaking of Claude, you should probably read A Mind at Play, the biography of Claude Shannon. I found it quite beautiful. And it inspired me to learn to juggle. Ultimately, it's a book about curiosity.
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Roope Kaaronen @roopekaaronen.net · 23/09/2026
The most hated birds of Finland are quite beautiful if you are open-minded. Art deco.
Two barnacle geese by the sea in Helsinki.Barnacle goose by the sea, Helsinki.
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Paul Montgomery @stonefishweirs.bsky.social · 23/09/2026
Black and white photo of a fisherman from the island of #Pantelleria, off the coast of #Sicily, making a woven #fishtrap or #nassa. The conical traps had one entrance, allowing fish to swim in, investigate the bait, and find it hard to get out. Deployed with long lines. #coastalhistory #muSEAum
Source

The Sea Museum of Pantelleria, Sicily, Italy.https://www.enjoysicilia.it/en/isola-di-pantelleria/pantelleria/museo-del-mare-pantelleria/
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Roope Kaaronen @roopekaaronen.net · 23/09/2026
Excited to be back at work, and very grateful for such constructive peer-reviews, but my lord is it a cold cognitive shower to return straight to revisions after 6.5 months on diaper duty.
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moin syed @syeducation.bsky.social · 22/09/2026
New paper! Despite qualitative researchers claiming that generalizability is not a goal, their published work does indeed contain generalizable claims. We document this and provide recommendations for how all researchers can better calibrate their generalizability claims. doi.org/10.1177/2515...
article header for, "Qualitative Researchers Can and Do Generalize: Generalizability Claims in Qualitative Psychological Research". Metascience!
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Roope Kaaronen @roopekaaronen.net · 22/09/2026
Of the many books I listened to during parental leave, The Traveler by Andrea Wulf was my favourite. I'm all for this kind of humanistic naturalism. It's about Georg Forster, a naturalist and ethnologist whose life nicely demonstrates that it wasn't inevitable to be a racist asshole in the 1700s.
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Roope Kaaronen @roopekaaronen.net · 22/09/2026
Surely it's a good idea to have the entire scientific enterprise and workflow depend on one of the most hated companies out there. Safe to assume no one would ever target them.
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Roope Kaaronen @roopekaaronen.net · 20/09/2026
Completed my first mushroom hunt with my son, 13 months. He was mostly content in the backpack. Gotta teach them young. :) Such a good mushroom year it actually got a bit repetitive picking the funnel chanterelles and curry milkcaps.
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Roope Kaaronen @roopekaaronen.net · 18/09/2026
This article wins the data visualisation of the month contest. www.mdpi.com/2571-550X/9/...
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Roope Kaaronen @roopekaaronen.net · 18/09/2026
Viime viikkoina on paljon puhuttu siitä, miten yli-inhimillinen tekoäly voisi ihmiskunnan tuhota. Ehkäpä se tapahtuu kunnissa. Tekoäly ujuttautuu kunnallisjohtoon. Kunnan IT-osasto saa potkut. Kuntiin nousee klemmaritehtaita kuin sieniä sateella. www.hs.fi/politiikka/a...
hs.fi
HS Humppilassa | Kunnanjohtaja antoi johtajien työt tekoälylle – Herätkää, hän sanoo muille
Humppilan kunnassa näkyy jo, miten tekoäly muuttaa Suomea ja työelämää. Kunnanjohtajan mielestä pitää uskaltaa sanoa ääneen, mitä oikeasti tulee tapahtumaan.
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Nina Willburger @drnwillburger.bsky.social · 17/09/2026
9,500 years old! And still intact! A Mesolithic woven baskets from Spain’s Cueva de los Murciélagos (“Cave of the Bats”) are Europe’s oldest known basketry. Thanks to the cave’s near‑zero humidity, organic materials didn’t decay, preserving several baskets for more than 9,000. 🧵/1/2 📷 me
Woven cylindrical basket displayed against a black background, with a wide rim and rounded base illuminated by a spotlight.
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Travis J. Wiltshire @tjwiltshire.bsky.social · 17/09/2026
Highly recommend listening to Many Minds!
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Roope Kaaronen @roopekaaronen.net · 17/09/2026
Kaunis muistokirjoitus Seppo Lindblomista, joka oli minulle aina utelias ja rakas vaari. www.hs.fi/politiikka/a...
hs.fi
Muistokirjoitus | Seppo Lindblom oli sovun rakentaja
Seppo Lindblomin ystävyys Mauno Koiviston kanssa kesti yli viisikymmentä vuotta.
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Many Minds podcast @manymindspod.bsky.social · 16/09/2026
News!! 🎉🎉🎉 We've officially re-launched our newsletter! Our first post is a "starter pack"—a brief orientation for newcomers to the show, with suggested episodes on different themes. Feel free to make alternate suggestions in the comments! manymindspodcast.substack.com/p/many-minds...
manymindspodcast.substack.com
Many Minds podcast: A starter pack
A guide for new listeners
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Roope Kaaronen @roopekaaronen.net · 11/09/2026
Apply to be my boss at @hcas.bsky.social: jobs.helsinki.fi/job/Helsinki...
jobs.helsinki.fi
Director of the Helsinki Collegium for Advanced Studies
Director of the Helsinki Collegium for Advanced Studies
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Roope Kaaronen @roopekaaronen.net · 02/09/2026
When listening to old Finnish children's songs, the Youtube algorithm almost always escalates to full-steam socialism. Man, the 70s were wild. A million little ants, unite! 🚩
Album cover of A Million Little Ants by Karviaiset. Five ants with a red flag.
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Eric Schares @eschares.bsky.social · 31/08/2026
🚨Update: Our analysis of global APC expenditure has now been expanded to cover more publishers (7 -> 14) and more years (2019-2025). We estimate $15B in APCs paid over seven years, $3.7B in 2025 alone. Elsevier crosses the $1B threshold by itself in 2025. arxiv.org/abs/2608.16322 #ScholComm
Line chart showing 5 biggest publishers from 2019-2025
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Many Minds podcast @manymindspod.bsky.social · 31/08/2026
New episode!! 🎙️🎉 A conversation with @damianblasi.bsky.social about linguistic diversity and what it can tell us. Linguistic diversity is a precious part of our species' heritage. It also offers a wellspring of clues about history, culture, and the human mind. Listen: disi.org/the-natural-...
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Kensy Cooperrider @kensycoop.bsky.social · 31/08/2026
Season 8 off to a great start! In which we discuss: the "golden age" of linguistic diversity, teeth, pronouns, the (mistaken?) idea that children change language, mono- vs polygenesis, linguistic inequality, Babel, scientific aesthetics, and the (wilder than we realize?) design space of language.
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Roope Kaaronen @roopekaaronen.net · 28/08/2026
I'm really not convinced where sustainability science is headed. Almost like the problems were too large to solve and the field turned to reflexive, academic, conceptual navel-gazing. The whole "relational turn" seems to just be spinning in circles. Mostly generating citation counts. Too cynical?
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Roope Kaaronen @roopekaaronen.net · 22/08/2026
One of the most tiring things is when people forcibly try to import American culture wars to Finland. I wish we could just retvrn to our own culture wars, such as: en.wikipedia.org/wiki/Cudgel_...
en.wikipedia.org
Cudgel War - Wikipedia
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Roope Kaaronen @roopekaaronen.net · 18/08/2026
I think this is the right existential framing for the topic, whose discourse is regardless often centered around economics, etc. Could also replace [liveable climate] with [tree of life]. But somehow this framing doesn't take flight in popular imagination.
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Roope Kaaronen @roopekaaronen.net · 18/08/2026
Just realised today that tissue (biological) in Finnish is kudos, which also means weave. So the Finnish analogy suggests our flesh is woven into existence. Yet another way we have made sense of ourselves via analogies of string.
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Roope Kaaronen @roopekaaronen.net · 17/08/2026
Ensimmäisen maailman ongelmia, mutta miksi nykyään joka hemmetin äppin etuliite on Oma? OmaPosti, OmaHelen... Etsii Mehiläisen äppia M:stä niin se olikin tietysti OmaMehiläinen. Kyllä mä tiedän muutoinkin että se on mun Oma äppi.
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Roope Kaaronen @roopekaaronen.net · 17/08/2026
Apply and become my colleague! It's a good place to be. And Helsinki isn't half bad either.
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