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Christian Cooijmans

@ccooijmans

Viking Historian | Research Fellow @uio.no | Assoc. Researcher @livunihss.bsky.social | vikings in continental Europe | medieval(ism) | histor(iograph)y https://hcommons.org/members/ccooijmans

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Latest posts by Christian Cooijmans @ccooijmans

Agreed! And no worries at all!

10.03.2026 15:38 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

(reposted as the original link had a paywall)

10.03.2026 10:51 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Don't Steal This Book 10,000 authors publish an empty book to protest against the theft of books by tech companies to train AI models.

More details and full list of authors here:
www.dontstealthisbook.com

10.03.2026 10:49 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Very happy to take part in this. The proposed legislation is not fit for purpose, solely benefits AI companies, and will make it even more difficult for many authors and artists to make ends meet.

10.03.2026 10:48 πŸ‘ 15 πŸ” 3 πŸ’¬ 2 πŸ“Œ 0

Certainly - but you can only fit so many rivers on a graph! πŸ˜‰

10.03.2026 10:12 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

The Dyle is very much in the book, though πŸ™‚

09.03.2026 22:42 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Aw shucks, Clare 😊

09.03.2026 19:35 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Frankish rivers styled as a tube-map.

Frankish rivers styled as a tube-map.

This morning's lecture on the vikings in Francia was enhanced by this graphic of Frankish rivers, taken from @ccooijmans.bsky.social's admirable book.

09.03.2026 11:33 πŸ‘ 89 πŸ” 19 πŸ’¬ 4 πŸ“Œ 1
An address label on a parcel, sent to a 'C Cooljams'

An address label on a parcel, sent to a 'C Cooljams'

Flashback to the most excellent misspelling of my name, and the best pseudonym I could wish for πŸ•ΆοΈπŸŽΈ

06.03.2026 10:25 πŸ‘ 35 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0

The plagiarism machine has discovered necromancy.

05.03.2026 09:20 πŸ‘ 19 πŸ” 6 πŸ’¬ 1 πŸ“Œ 1

The plagiarism machine has discovered necromancy.

05.03.2026 09:20 πŸ‘ 19 πŸ” 6 πŸ’¬ 1 πŸ“Œ 1

This is a really weird fantasia of Edinburgh (and its geography) as it never was and is *full* to the brim of the sorts of simple yet glaring errors and anachronisms you would never have gotten if you hadn't left it to a computer to just barf out an averagised slop answer.

02.03.2026 11:32 πŸ‘ 330 πŸ” 70 πŸ’¬ 18 πŸ“Œ 2
John Peel.

John Peel.

"And that was Lawn Chair ArmΓΆur, the up and coming Norwegian black metal band from Croydon..."

28.02.2026 11:16 πŸ‘ 6 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

#medievalism at its finest πŸ‘Œ

27.02.2026 17:19 πŸ‘ 24 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Three characters from the 'Vikings' TV series, wearing a variety of impractical-looking dark leather outfits with various gridded elements, arbitrary straps, and decorative panelling.

Three characters from the 'Vikings' TV series, wearing a variety of impractical-looking dark leather outfits with various gridded elements, arbitrary straps, and decorative panelling.

Three dark leather lawn chairs made of interwoven leather and gridded panelling.

Three dark leather lawn chairs made of interwoven leather and gridded panelling.

One of our survey respondents characterised present-day popular viking outfits as 'lawn chair armour', and there is frankly no better description out there.

27.02.2026 15:00 πŸ‘ 52 πŸ” 14 πŸ’¬ 2 πŸ“Œ 4
Preview
Andrea Egan begins five-year term as UNISON general secretary - UNISON National 'We will put faith in members' decisions and stand up to any employer, politician or cabinet minister who acts against our interests'

Not a guy, friend.

27.02.2026 08:00 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
The Tune ship in its steel rig, suspended from a rail, about to enter the new building of the Museum of the Viking Age. 

Photo: Museum of the Viking Age, University of Oslo

The Tune ship in its steel rig, suspended from a rail, about to enter the new building of the Museum of the Viking Age. Photo: Museum of the Viking Age, University of Oslo

Interior shot of the steel rig containing the Tune ship

Photo: Museum of the Viking Age, University of Oslo

Interior shot of the steel rig containing the Tune ship Photo: Museum of the Viking Age, University of Oslo

The Tune ship in its steel rig, suspended from a rail, slowly making its way towards the new museum building.

Photo: Museum of the Viking Age, University of Oslo

The Tune ship in its steel rig, suspended from a rail, slowly making its way towards the new museum building. Photo: Museum of the Viking Age, University of Oslo

Following the earlier Oseberg and Gokstad ship relocations, the Tune ship, snug in its steel rig, has started its journey into the new Museum of the Viking Age (@uio.no) today. Over the course of three days, it will travel a total of 130 metres at a top speed of c. 24 cm per minute.

24.02.2026 11:34 πŸ‘ 46 πŸ” 23 πŸ’¬ 1 πŸ“Œ 2

In your ears?

21.02.2026 11:58 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Great job to you both!

21.02.2026 11:22 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Β―\_(ツ)_/Β―

20.02.2026 16:33 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
A short white text formatted like an inspirational quote against a black background. The text reads 'A Viking is an occupation like being a zookeeper but obviously totally different in every way'. It is attributed as 'anonymous, from the Great Viking Survey (2025)'.

A short white text formatted like an inspirational quote against a black background. The text reads 'A Viking is an occupation like being a zookeeper but obviously totally different in every way'. It is attributed as 'anonymous, from the Great Viking Survey (2025)'.

Some Friday wisdom from our Great Viking Survey dataset:

20.02.2026 11:46 πŸ‘ 22 πŸ” 8 πŸ’¬ 0 πŸ“Œ 1
Preview
Post-doctoral researcher sought for analysis of Newark cemeteryΒ remains ORCA is looking for a post-doctoral researcher to record and analyse the human remains from a Pictish/Norse cemetery in Orkney.

The UHI Archaeology Institute is looking for a post-doctoral researcher to record and analyse the human remains from a Pictish/Norse cemetery in Orkney.

16.02.2026 10:07 πŸ‘ 18 πŸ” 20 πŸ’¬ 0 πŸ“Œ 1

I propose to make universal the old policy of the Blackfriars conference at the American Shakespeare Center:

If you do not end your paper on time, you will be forced to exit, pursued by a bear. Literally, a bear will come take your paper from you.

16.02.2026 01:14 πŸ‘ 1638 πŸ” 569 πŸ’¬ 34 πŸ“Œ 77

Capitalism ouroboros: Paying someone else to pull you up by your bootstraps

15.02.2026 11:05 πŸ‘ 12 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

Capitalism ouroboros: Paying someone else to pull you up by your bootstraps

15.02.2026 11:05 πŸ‘ 12 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

πŸ§ͺ🏺 Update - authors have new paper showing how useless gen- #AI is for archaeological illustration.
All 400 images were multiply inaccurate (physically, socially, technologically, environmentally), even with improved prompts.

JUST USE HUMAN EXPERTS & ARTISTS

www.cambridge.org/core/journal...

13.02.2026 18:09 πŸ‘ 643 πŸ” 250 πŸ’¬ 28 πŸ“Œ 33
The Ness of Burgi, sitting on a rocky outcrop with a stormy sea below.

The Ness of Burgi, sitting on a rocky outcrop with a stormy sea below.

The Ness of Burgi - stone structure on a rocky outcrop during a stormy day.

The Ness of Burgi - stone structure on a rocky outcrop during a stormy day.

The Ness of Burgi - stone structure on a rocky outcrop during a stormy day.

The Ness of Burgi - stone structure on a rocky outcrop during a stormy day.

One of the internal cells at the Ness of Burgi - with the sea in the background

One of the internal cells at the Ness of Burgi - with the sea in the background

Storm on the horizon when we made it to the Ness of Burgi, one of only few attested Iron Age 'blockhouse forts', all of which are in Shetland. The site feels very exposed and secure at the same time, with steep coastal cliffs on three sides and landward ditch/rampart. Its exact function is unclear.

13.02.2026 10:56 πŸ‘ 19 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

When Musk said the "cumulative sum of human knowledge has been exhausted" for training AI, what he was really saying is that he would not pay for digitisation, and had reached the limits of useful data he could scrape for free. The GenAI house is built on sand.

12.02.2026 09:15 πŸ‘ 235 πŸ” 62 πŸ’¬ 5 πŸ“Œ 3
Preview
The AI Takeover Is Not Inevitable: Now Is the Time to Resist "Studying history, we know that nothing is inevitable."

Over the next few weeks, the NACBS blog will feature a series of pieces on artificial intelligence. Check out the opening essay by @amywb.bsky.social and stay tuned for more!

www.nacbs.org/post/the-ai-...

06.02.2026 17:44 πŸ‘ 25 πŸ” 14 πŸ’¬ 0 πŸ“Œ 1
A metal sign that says 'chamber', inside a chamber at Muness Castle

A metal sign that says 'chamber', inside a chamber at Muness Castle

Also home to some enlightening signage:

11.02.2026 13:06 πŸ‘ 10 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0