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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 11h

I uploaded some short video documentation of the light installation #31(RGB) that I made with Gerard Holthuis in 2001. video.joostrekveld.net/w/3HNpfmSnaQ… (photo by Hein van Liempd) #lightart

Coloured neon lights are suspended in a grid that is slightly curved. The space is white and has pillars, the surfaces diffuse the light.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 07/10/2026

Last week in Mannheim I encountered this great 2003 reprint of the 1928 German edition of Georgius Agricola's "De Re Metallica" originally from 1556, an early reference on the art, science, philosophy and economics of mining and chemistry. #GeorgiusAgricola #DeReMetallica #SystemsThatMatter

A hand holds a book open on a spread with on the left an elaborate woodcut depicting salt works and on the right text in German.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 04/10/2026

These two books are interesting to read through each other: Cairns-Smith in 1985, explaining his theory that life may have first evolved in (micro-)crystals before carbon-based substances took over, and the Belgian pre-science-fiction ('merveilleux […] [Original post on assemblag.es]

Two books side by side "Les Xipéhuz" by J.-H. Rosny Ainé, in an edition from 1910, and "Seven Clues to the Origin of Life" by A.G.Cairns-Smith.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 02/10/2026

The largest integrated chemical complex in the world. Chemistry is the elephant in the room of the last 1.5 centuries.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 02/10/2026

Visited BASF Ludwigshafen today, 200 chemical plants on 10 square km, an important place in the history of chemistry, inventor of audio tape, producer of 15% of drink bubbles wordwide, of most citrus and lavender smells, pigments, foams and much more, one of the […] [Original post on assemblag.es]

Part of a chemical plant, showing two buildings and a forest of metal pipes.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 01/10/2026

And there is this great recording of almost 40 years ago: youtu.be/0JcPTKvKyM0?t=247

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 01/10/2026

There is this great recording by Murat Aydemir and Salih Bilgin: www.youtube.com/watch?v=twlN88iFCpM

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 01/10/2026

Preparing not only for the upcoming tanbur/makam workshop, but also for the one after that... #muratAydemir #IsTanbur #artconnects.be #darülelhankülliyatı #pencgah #pençgâhmakamı

The title page of an old musical score published by the "Istanbul Konservatuvari", it says "No 171, Kantimir Oglu, Pencuhag Makaminda Saz Semaisi".

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 30/09/2026

Finally all the tools are working (or at least for long enough to be useful), but for now the experiment still isn't... What bit of tacit knowledge am I still missing ? #otherSemiconductors #79 #TheSaltTransistor #SystemsThatMatter

Some devices on a table, two of them have numerical displays, the top shows '500' and '500' (degrees C), the lower device shows 790 (Volt) and 0.46 (mA). The device in front has small windows that allow to see through it. A white reflective surface is mounted behind it, and a camera set up in front of it.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 29/09/2026

Some of the individuals generated during the (very basic) helicopter-seeds inspired hands-on evolutionary algorithms workshop today at the minor ArtScience at KASK. #schoolofartsgent #minorArtScience #evolutionaryAlgorithms #systemsThatMatter

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Reposted by Joost Rekveld

iwein @iwein.mas.to.ap.brid.gy · 28/09/2026

Xkcd 1732 was made ten years ago, but we're still _exactly_ on the "current path", which is, without exaggeration, the doomsday scenario. If we can't get the needle to move only a tiny bit over a decade, we need to be a lot louder apparently. For full accessible […] [Original post on mas.to]

Tail of xkcd 1732 from 2026 url in the main post

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 28/09/2026

In between all the other stuff I did manage to prepare for version seven of my setup, combining the approach of version five with some wisdom acquired through version six. #othersemiconductors #thesalttransistor #79 #systemsthatmatter

The inside of a small oven. A contraption can be seen involving heater wires wound around smooth, white material. Above it a large steel clamp with a sandwich of various materials and components.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 27/09/2026

It has actually been translated into English: "To Live and Think Like Pigs", MIT Press. mitpress.mit.edu/9780983216964/to-l…

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 27/09/2026

Yuk Hui's talk at V2 some days ago made me want to reread this little book by Gilles Chatelet, and especially the furious rant against the chaos theorists that it contains... from 1998. #gilleschatelet #vivreetpensercommedesporcs #systemsthatmatter

A hand holds a copy of the book "Vivre et penser comme des porcs" by Gilles Chatelet.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 21/09/2026

So with version six we did get to 500 degrees (again) today, without breaking or melting anything, so that is great. But by now I have learned that a more important question is whether that can be done reliably.. Still far from certain and even a bit unlikely […] [Original post on assemblag.es]

Two devices on a table, on the left an electronic device with two numeric displays and some controls. The top display indicates 499, the lower 500. On the right a device made of metal and a material that looks like ceramics. Through a little glass window, a warm glow can be seen.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 20/09/2026

Always interesting (and intense) to prepare a new seminar; this year's title is "Zombies, Machines and the Fabric of Life", and we will be reading texts by Vandana Shiva, Jessica Riskin, Hannah Arendt, Evelyn Fox Keller, Carolyn Merchant, Kalindi Vora, Sarah […] [Original post on assemblag.es]

A stack of books, by among others Katherine Hayles, Audrone Zukaiskaite, Val Plumwood, Margaret Boden, Hannah Arendt..

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 18/09/2026

more at v2.nl/events/v2_-45-years-still-uns… (picture not directly related but connected to one of my earliest 'unstable tools', the software I wrote for IFSfilm in 1991) 2/2

v2.nl

V2_ 45 years: Still Unstable

Still unstable. In 2026, V2_ marks 45 years.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 18/09/2026

In a week I will have to honour to take part in the festivities around the 45th anniversary of V2_ in Rotterdam. As part of the subtheme 'Unstable Tools' I will be interviewed by Arie Altena about stabilities and instabilities in the relationship to our […] [Original post on assemblag.es]

A vintage computer printout showing an image consisting of a pattern of white dots against a dark background. The pattern is hard to see because of the white grid in between the printed darker pixels.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 12/09/2026

There are many beautiful saz semaileri in makam Hüseyni, bit I don't quite understand why the one by Kemençeci Nikolaki (18?? - 1915) is not played more often. #kemençeciNikolaki #hüseynimakamı

A page of an old music publication, the title of the piece is given in the Ottoman script.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 12/09/2026

In other news this friendly 'Red Admirable' was doing its thing just outside of the bedroom window this morning. #bxl

A fairly large butterfly sitting on a wall surface.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 11/09/2026

RE: mathstodon.xyz/@tao/117253629967855… It is really interesting to see how articulate the discussions among mathematicians are when it comes to AI.

mathstodon.xyz

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 10/09/2026

Aaaaaaand finally all pieces managed to fit together, so in principle we're ready to try out reproducing the Salt Transistor experiment. Let's hope that if it fails, it at least fails in an interesting way ! #otherSemiconductors #TheSaltTransistor #79 #SystemsThatMatter

A device vaguely resembling a ceramics kiln standing on a work bench. The device is open, inside heating wires can be seen, and above it a steel clamp that is connected to wires and which holds a cubic crystal.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 10/09/2026

Finally getting around again to causing some actual progress towards version five ! #otherSemiconductors #TheSaltTransistor #79 #SystemsThatMatter

A device that resembles a small ceramics kiln, open on a workbench and seen from above. The device is made of slabs of white material inside a metal frame. Ceramic screw terminals can be seen and an assemblage of heating wires wrapped around sheets of smooth, white material.

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Reposted by Joost Rekveld

theHigherGeometer @highergeometer.mathstodon.xyz.ap.brid.gy · 08/09/2026

"We do not intend to claim the Millennium Prize for this result." is ....something. I wrote at some point how in the social norms of mathematics research there seems to be a level of respect for PhD student projects by senior people: hearing that X's student is working on problem A, prof Y has […]

mathstodon.xyz

Original post on mathstodon.xyz

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Reposted by Joost Rekveld

henk ✅ @henk.waag.social.ap.brid.gy · 08/09/2026

@Marloezovic US sanctions policy scares European internet sector Background Tech Internet service providers have become afraid of US intervention. The U.S. has recently been using terrorism sanctions as a means to take websites off the air. “I have informed the […] [Original post on waag.social]

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 08/09/2026

(pictured: my film from 2023, "Mechanisms Common to Disparate Phenomena; #59")

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 08/09/2026

The attentive viewer will have noticed that I more information about the planned retrospective programmes of my films at Cinema Nova in Brussels the coming weekend has not been provided; Due to previously unplanned renovation works Nova is opening a few weeks […] [Original post on assemblag.es]

An abstract image of short coloured thick lines that seem to be arranged on an underlying pattern of slightly curved lines.

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Reposted by Joost Rekveld

ekes @ekes.todon.eu.ap.brid.gy · 07/09/2026

As A/I has to cease operation, the importance of stopping this happening again increases. Re: Disabling of the autistici.org domain name by PIR From a letter by the President of the Italian Chapter of the Internet Society "we find these actions incompatible with dot org claiming to be the safe […]

todon.eu

Original post on todon.eu

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 06/09/2026

There are some more recent recordings online, but I like this older recording better (saz semaisi starts at 5'30''): youtu.be/5MvluuYyRCI?t=328

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 06/09/2026

The beautiful saz semai by Yusuf Paşa (1821 - 1884) in makam Neveser. Also a good excercise on the tanbur. #yusufpaşa #nevesermakamı

An old music publication that is open so that two pages of musical notation can be seen. The title of the piece is given in the Ottoman script.

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Reposted by Joost Rekveld

Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 27/08/2026

Some time ago I read a short piece/blogpost type text making the comparison between AI and spiritism, debunking the 'you have obviously not tried AI yourself' argument. It was a great text but I can't possibly find it again... Would anybody know which text I am referring to ? It is not terribly […]

assemblag.es

Original post on assemblag.es

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 03/09/2026

This arrived today and it looks super interesting, but it will have to wait a little bit. #JeanVioulac #SystemsThatMatter

A hand holds a copy of the book "L'époque de la technique, Marx, Heidegger et l'accomplissement de la métaphysique", by Jean Vioulac.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 03/09/2026

@stephen_cornford that looks like a great platform ! The PeerTube is sort of hidden inside, interesting to see in itself how it can be used in very different ways (if you put the work into it... ).

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 02/09/2026

Please let me know of any other experimental film/video PeerTube instances if you know of any. Also happy to answer questions if you have them.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 02/09/2026

Happy to present my brand new PeerTube instance at video.joostrekveld.net . So much better in all respects than the overpriced and underwhelming commercial alternatives that I was using before. So far I can really recommend this to all my filmmaker […] [Original post on assemblag.es]

A screenshot of the home page of a Peertube instance. A grid of video's can be seen.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 30/08/2026

Very interesting exhibition in Eye Amsterdam of 10 works adressing imagery from colonial times. Pictured a great scene from the work by Paula Albuquerque. #EyeAmsterdam #PaulaAlbuquerque #SystemsThatMatter

An image mostly consisting of a green texture produced by video compression glitches. On top of that the cut-out image of a chair and a white man can be seen in black and white. The man is measuring the height of a human whose outline can be seen in the green texture.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 28/08/2026

A bit of a tome (792 pages ?!), but great to read, wish I had known of it before. #PhilippeDescola #SystemsThatMatter

A hand holds a copy of the book "Par-delà nature et culture" by Philippe Descola.

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Reposted by Joost Rekveld

Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 27/08/2026

Yesterday I was stuck in the rabbit hole of the Cambridge Language Research Unit and Margaret Masterman, a philosopher, pioneer in machine translation and one of its founders. She was also one of the six students taking the notes for Wittgenstein's "Blue Book" […] [Original post on assemblag.es]

A black and white portrai of a woman of around 50-60 years old.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 27/08/2026

A book about her will come out at the end of the year, written by Peter de Bolla.

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Joost Rekveld @joost-rekveld.assemblag.es.ap.brid.gy · 27/08/2026

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