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I write, therefore I am

With this variation on a famous statement by the philosopher Descartes, I would like to express that the act of writing about what happens in my life is important to me.

Friday, July 20, 2018


Tuesday, July 17, 2018


At 11:01, I bought the book Kunstopdrachten van de Rijksgebouwendienst na 1945 written by Wilma Jansen (in Dutch) and published by Uitgeverij 010 in 1995, ISBN:9789064501951, from charity shop Het Goed for € 4.50.

Thursday, July 12, 2018

Jessica Segall

In the evening, I was in the city with a friend, and we went to Concordia where there was an opening an exhibition by Jessica Segall. We were a little late for the artist introduction and joined at the end of Q&A session.

Monday, July 9, 2018


At 14:45, we had some rain, the first time since June 25, when there was 1.2mm of rain according to data from Royal Netherlands Meteorological Institute for station 665 in Enschede. This morning, I spend some time cleaning up leaves that had fallen from the tree in our garden. At the moment we are in the 5% dryest of years on record. In the past weeks, our magnolia has had some flowers, but it seems that they wither before they are fully open.

Sunday, July 8, 2018

Gerrit Rietveld Academie Finals 2018

Today, I went to the Gerrit Rietveld Academie Finals 2018 exhibition. I found the works of the following graduates noteworthy (in the order I encountered them):

At 15:39, I bought one of the last available copies of the magazine that is a remake of the British Vogue March 2018 issue, for € 18.00.

Saturday, July 7, 2018

Royal Academy of Art

I went to the Graduation 2018 exhibition at Royal Academy of Art in The Hague. I first went Amsterdam, where I went to bookshop Scheltema and bookshop Het Martyrium. At both bookshops I did not buy anything. In The Hague, I payed short visits to the American Book Center and bookshop Paagman. At 14:14, I arrived at the Royal Academy of Art and stayed there till 19:50. I am almost sure, I missed some rooms, because it is a rather compex building. I found the following graduates noteworth (in the order that I encountered them or their works):

At 19:20, I bought Graduation Catalogue 2018 for € 12.50.

Thursday, July 5, 2018

Watercolour by Benedetta Guidi

Last Thursday, I met with Benedetta Guidi and looked at her works, which are about the intimacy of two people meeting. Yesterday morning, I let her know my decision to buy one of her works. I like this work, because on one hand it is very realistic, and on the otherhand it vague, very colourful, almost abstract, if you do not recognize the figures that are in it. The male figure is less clearly visible as in more of her works. This afternoon, I went to the AKI to collect the Untitled work.


At 17:54, I bought the following two comics from charity shop Het Goed for € 1.95 each:
  • Ravian: de vierde dimensie written by Pierre Christin, illustrations by Jean-Claude Mézières, written in Dutch, published by Dargaud in 1983, and translated from Les Mauvais Rêves written in French, ISBN:9067932183.
  • Ravian: De wees van de sterren written by Pierre Christin, illustrations by Jean-Claude Mézières, written in Dutch, published by Dargaud in 1998, translated from L'Orphelin des astres written in French, ISBN:9067934844.

Wednesday, July 4, 2018


Tuesday, July 3, 2018


One third of all 428,362 sets of equations for the the Irregular Chocolate Bar problem for the problem of finding 22 unique integers which can be divided in up to and including 10 partitions, has been processed. Now at 33.35%, 7380 unique solutions have been found. It seems that the processing of an equation is taking more time and that more solutions are found. This makes it hard to estimate when all sets of equations will be processed.

Finals 2018: Third visit

This afternoon, I first went to Concordia for the part of the AKI Finals exhibition that I had not seen yet. I liked the works of Pjotr Stam. Next, I went to the AKI building. At 17:08, I bought the book Mike de Jong had on display for € 20.00. It is one of five he had made. I met with Benedetta Guidi, looked at her works, talked with her about them, and thought about which of her works I want to buy. I also talked a little with Eline van Hove, mainly about discrete mathematics.

Monday, July 2, 2018

Finals 2018: Second visit

This morning, I visited the AKI Finals 2018 exhibition again. Now on my own. I arrived early and it was very quiet, giving more time to absorb and enjoy everything. It made me realized, I had missed some things last Friday. I found the works of the following graduated students noteworthy (in the order I encountered them):
  • Mike de Jong. (Later, I inquired if the book he has on display is for sale.)
  • Maria Britze.
  • Benedetta Guidi. (Later, I contacted her to talk about buying a work from her.)
  • Eline van Hove. I read that she combined her study with studying math at the University of Twente.
  • Marlijn van Zadelhoff. I talked a little with her. She works mainly with glass.
  • Liesbeth Piena.
  • Lorraine Etimiri. (Actually, mainly her individual 'business' cards.)
  • Lex Chan. (Talked a bit with him. He has a picture of Kira Fröse and her works on display.)
  • Nadie van Wijk. I ordered the little book Het feest der mislukking.
  • Laura Homölle. I ordered the book WE ARE AKI.


Yesterday, when seeing a drawing of a the B4 orthographic projection of the tesseract (the first hypercube), I thought about how it would look it pentagram would be extended with 'cubes'. Today, I came up with the following drawing:

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Sunday, July 1, 2018

Le Nozze di Figaro

This afternoon, Andy spend some considerable time listing to the opera Le Nozze di Figaro by Mozart.

This made me think about the question, what is the minimal intelligence (IQ) for intentional and attentively listening to an opera? Some classify operas as the most complex form of classical music. However, in the paper Why More Intelligent Individuals Like Classical Music by Satoshi Kanazawa and Kaja Perina it states: At the same time, preference for opera, another highly cognitively complex form of music, is not significantly correlated with intelligence.

I prefer to listen to the Boom Room while trying to understand the paper Minimal Phenomenal Experience by Thomas Metzinger. Or I listen to the presenation he gave about the subject, while cleaning up my email inbox and, later, writing this.

Friday, June 29, 2018

AKI finals 2018

This afternoon, I went to the AKI finals 2018 exhibition at the AKI building. Andy game with me. We listened to the opening speech and walked through the building. I found the works of the following graduated students noteworthy (in the order I encountered them):

At 16:58, I bought the catalog AKI FINALS 2018 edited by Johan Visser, written in Dutch and English, and published by AKI ArtEZ on Friday, June 29, 2018, ISBN:9789075522396, for € 10.00.

Thursday, June 28, 2018

The Monads

At the end of the afternoon, I went to Tetem art space for the opening of the exhibition The Monads with an installation by Gabey Tjon a Tham. The introduction was by the composer and sound artist Horst Rickles. During his introduction, he explained that the monad concept is the concept as meant by Gottfried Leibniz. He 'opened' the exhibition with giving a performance with a small bullroarer, as an example of a monad, swinging it slowly above his head and made it produce different tones.

Wednesday, June 27, 2018


Tuesday, June 26, 2018

The nature of a map in data modelling

For many years, I have been wrestling with trying to combine my ideas of components with that of a map (as a partial function) of keys to values. This afternoon, I realized that such a map can be viewed as a set with a uniqueness constraint. And that it is possible to have multiple uniqueness constrains on a set. Strange, that this has not occured to me before, because that is basically how tables in relational databases are often defined, usually by defining a primary key, defining a uniqueness constraint or declaring an index with uniqueness requirement. The reason is probably, because I view relational database as an implementation model with limitations with respect to complex data structures. (Relational databases force you to put all similar values into one predefine table.)

Monday, June 25, 2018


Sunday, June 24, 2018

8 by 8 with fixed palette

In the past weeks, I worked on a new version of the animation based on the 8 by 8 Street Tile Patterns. I used these patterns before for the Bring Your Own Beamer events at Tetem art space in 2017 and 2018. However, this animation makes use of a fixed colour palette consisting of 30 colours in five different intensities. I spend a lot of time adjusting certain parameters to make each level look the same intensity, but it seems one almost has to fix each colour exactly. I am also afraid that the it also depends on the monitor and the colour temperature settings in use. I made a separate page for the animation. I might update this page on a later date, because I still not completely satisified with everything and I also thinking about a method to specify your own palette.

Under Sweet Surveillance

I went to photo gallary Objektief for the opening of the exhibition Under Sweet Surveillance with works from four young photographers, who are:

Thursday, June 21, 2018


Wednesday, June 20, 2018

Neuro revolution

In the evening, I went to a talk held at Tetem art space, under the title: Wie willen we zijn in de eeuw van de neurorevolutie? (Who do I want to be in the age of neuro revolution?) by Femke Nijboer. What follows is based on notes that I took.

The idea that we are living in the age of neuro revolution, was introduced in 2009 by Zack Lynch in his book The Neuro Revolution: How Brain Science Is Changing Our World. Some developments are: An already widely used technology like deep brain stimulation. Facebook is working on technology to read thoughts through brain waves. Research into detecting truth through analyzing brain waves. In the future we might be able to detect if pedophiles have been 'cured'. There are now already companies working on neuromarketing.

What do these develops say about ourselves? Nijboer showed some pictures from movies with cyborgs: Brainstorm, Star Trek: First Contact, Avatar, X-men, Eternal Sunshine of the Spotless Mind, and Inception. Someone suggestiond from the public were RoboCop and The Matrix.

That thinking happens in the brain, has been known for a long time. There are evidences that the Inca's already performed neurosurgery. The discovery electricity is involved in the brain was done in the eighteenth century. Three stories from present day reality:

  • Deep brain stimulation with people with Parkinson. It works, but it seems that with some people it also changes their personality. One example was reported by Leentjes et al in Ned Geneeskundig Tijdschrift, 2004.
  • Hanneke de Bruijne, a woman with ALS, used a Brain Computer Interface to 'talk' through thoughts.
  • Neil Harbisson, who calls himself the first cyborg.

What are usefull brain interfaces? Quote: We put our hope in technology, but we trust in nature. Nijboer told about the project Bridging the gap between ethics and neurotechnology: the case of Brain-Computer Interfaces | 2012-2016. It involved patients with progressive musculariscular diseases, high span cord injury, locked-in syndrome. The looked at worhtiness, autonomy, inclussion, safety, and self-expression. They discovered that patients found it important to express their emotions. To tech or not to tech, that's the question. What is the use of BCI when their is nobody to communicate with. What about the cyborg appearance. An example of a father who got a tattoo of cochlear implant. They organized a Neurocatwalk to open the discussion about aesthetics of devices to aid people with a diability.

Nijboer closed with the questions: Who do you want to be? Who do you want to become?

Monday, June 18, 2018


Sunday, June 17, 2018


Saturday, June 16, 2018


Saturday, June 9, 2018


July 2018
June 2018
May 2018
April 2018
March 2018
February 2018
Alzheimer's Disease
Trip to China 2010
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