Digital Twins Done Right

My gosh, everyone is now writing about Digital Twins! I should be delighted, you’d assume. Someone within Gartner must have resonated with some article of mine from 20 years ago! A few examples: 1991: A simulator of complex ecosystems: https://www.reflektis.com/blog/a-beehive-simulator/ 1996: Buffered Database Communication: https://www.reflektis.nl/blog/gisi-gebufferde-database-communicatie/ (sorry, only in Dutch)… and many more I fear Well, not really. In the first place,...

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TOGAF ADM Revised

Intro TOGAF defines its process or method in something called the ADM: the Architecture Development Method. It is usually represented by the illustration below, with the familiar arrangement of circles around Requirements Management, which has come to be the iconic representation of TOGAF. Waterfall mindset The Open Group itself is clear on the ADM in that it is not necessarily a waterfall-like process (although it can be executed in such a fashion). It is supposed to be iterative and incremental,...

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Your brain does not process information and it is not a computer | Aeon Essays

Your brain does not process information, retrieve knowledge or store memories. In short: your brain is not a computer. Written by Robert Epstein, a senior research psychologist at the American Institute for Behavioral Research and Technology in California. He is the author of 15 books, and the former editor-in-chief of Psychology Today. No matter how hard they try, brain scientists and cognitive psychologists will never find a copy of Beethoven’s 5th Symphony in the brain – or copies of words,...

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Waarom het niet werkt

or: the lack of cohesion-awareness. In The Netherlands we have in our public transport trains the concept of silent compartments (quiet areas). Abundantly signalled in the compartments, the idea is that people are quiet in there, so that you can concentrate on work or just relax. There’s often people who pretend they have not seen the signals, or just because they do not want to acknowledge the concept, and talk or make other loud noises. Understandably this annoys other travellers. However...

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von Neumann, revisited

PETER BELANGER/INTEL Intel’s Bold Plan to Reinvent Computer Memory (and Keep It a Secret) John von Neumann (during the Manhattan project, 1940-1945). Public domain, Link We all read John von Neumann’s groundbreaking paper “First Draft of a Report on the EDVAC” back when it was published in 1945, did we not (just joking)? You should. And read it well, because not many people did (I know of no-one). OK, I admit that some of the mathematics is above me as well, but one thing stuck with me: there...

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Computers are not about technology

The main problem of the technological focus of computers is precisely that: that it is seen as a technology. Because of that, technologically savvy people are attracted to it, and arising problems in all areas of life are discussed within a technological mindset. Our current society is very much coloured by technology. Johan Huizinga, a Dutch historian and one of the founders of modern cultural history, pointed out the dangers of this focus in several works of cultural criticism during the rise...

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The Live Domain

Conway’s Game of Life Prompted by an old discussion on Reddit (link expired), kicked off by the question: “Please explain OOP to me in the language of a five-year old”, I found myself musing on the reasons computing seems to stay stuck in the Middle Ages. It is not for lack of great minds or vision. In fact, I have the impression, the problem seems to be that nobody ever seems to read anything. Why is that? Is there some kind of unspoken consensus that, since we are in the area...

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The ArchiMate metamodel

This article introduces a complete, navigable and clickable representation of the ArchiMate metamodel standard. The model is created using UML. This is not because I wanted to translate ArchiMate into UML, but because UML should be well-suited to define a language such as ArchiMate in. And after all, also the standard itself defines its metamodel using something that looks like UML. In fact I think the ArchiMate forum should decide to formally specify ArchiMate in UML and “own” the...

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Managersonline.nl – Gebrek aan structuur staat flexibiliteit van IT in de weg

IT is tegenwoordig een belangrijk middel, zo niet het belangrijkste middel, om innovatie te realiseren en het verschil te maken met de concurrentie. Source: www.managersonline.nl De beweging binnen IT naar agile is reeds lang gaande — ikzelf ben daar sinds 1995 bij betrokken. Het artikel stipt een aantal interessante punten aan in deze beweging: De “business” heeft deze beweging nog niet ingezet, en denkt nog in silo’s en in beton gegoten processen IT wordt (teveel) gezien als...

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Logging architecture decisions

Or: don’t use the architecture Decision Log as a control mechanism. Tempting isn’t it? All those architecture decisions get logged there. Favourite pastime of the control-freak enterprise architect: review the logged items and write comments on them, reset their state from accepted to rejected. Don’t. Well, let them log. Let them review. Let them improve. But don’t interfere unless absolutely necessary. And with necessary I usually mean: you have something to bring to...

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