Georg Sebastian Voelker, German climate scientist. Views are my own.

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Cake day: March 23rd, 2025

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  • I’m rarely ever going below 21 kmh average (!) on my 16km commute. Of course I am going slow where it’s necessary and dangerous and try to be as responsible as possible. Nobody wants to get hurt. But using 20 km/h speed limits beyond local hot spots would be very unrealistic given a road bike easily reaches 40+ kmh on flat terrain without a mandatory speed gauge. And the latter is also a crucial obstacle. How should speed limits be enforced when people are not forced to mow their speed? And if they are not, what’s a number on a sign worth? I am guessing not much.


  • In general, setting up a client with POP3 rather than IMAP will move all the emails from the inbox to the client. Once they are in the client you can decide how to backup the archive, there’s plenty of options with varying performance and memory footprint. That sounds pretty much like what you would like to do in general.

    Just for completeness: That of course also means that syncing to several devices and backups are now your problems to solve.

    In any case, the initial download will take a long time either way if you have 20+ years and 10s of GBs of data. No way around that.


  • I don’t think you are paranoid. This technology is creepy as hell. Almost all cars are connected nowadays and send data back to the manufacturer’s server—visible or not. In the best case it’s just the service history, in the worst case live positions and more. Some cars stop working if the server is shut down *cough. Cameras equipped to unlock based on a face record biometric data. And honestly, would you trust your car manufacturer (!) to handle your biometric data?






  • gsv@programming.devtoEurope@feddit.orgPetition to ban Israel from Eurovision
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    2 months ago

    I’m not convinced that answering division with exclusion rather than dialog is a good idea. Claiming the artist promotes a genocide by the Israeli government not disagreeing with him is very steep. That supposed abuse of the tournament through propaganda needs more evidence in my eyes. And I wanna add: I don’t disagree that there have been genocidal statements coming from the Israeli government and other bodies involved in the conflict.


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    2 months ago

    I’m so tired of this. The idea is to unite in music and not to unite through not seeing someone there. Did Israel, the USA, the Hamas, etc. commit war crimes? Most likely (leaving it to the courts to rule that). And what do we gain by excluding Israeli artist from a music competition? Nothing but moving back into the comfort zone. The artist wouldn’t even be given a chance to criticize the own government.


  • From an environmental physics point of view, this is not very weird: Warm air holds more absolute amount of water, leading to stronger downpours and longer dry periods. One could also say, the world is getting warmer and this a little “more like summer”. And strong rains converts to strong surface runoff. In other words: Strong rains causes your streets and fields to flood and that water raises the rivers rather than the soil’s moisture. And there we go: The soil is getting drier although there’s more total rainfall.



  • To be fair though, moving personal to institutional knowledge was always a challenge and rarely works really well. While I value apprenticeship a lot (I do science in Central Europe where that is pivotal) I wonder whether it is also a way to move personal knowledge from person to person without ever becoming institutional knowledge. Management didn’t just bury the legacy of Ben, they missed making sure that Ben and Sarah were leaving a manual which cannot burn. We know similar problems because we, as in the scientific endeavour, keep telling people that doing core developments and writing papers about it on half-year contracts in different institutions half a globe apart for a decade is about excellence and learning to become senior rather than a lack of commitment. And we have done so for a long time. But at least juniors, dreaming of becoming a sailor on the research vessel, keep coming.

    And after watching ML is exacerbating existing problems in other fields for some years, we start (!) debating whether it might be slowly replacing us, too. But rather than challenging LLMs writing papers so that other LLMs can summarize them for us, we are still thinking about the next paper and how it will be cited most because that is how it always was and will always be.

    So it is not just about greed. It is the idea of ever performing better to death and the way we define success. The same reason we self-optimize and love that fitness watch and the paid subscription so much because it helps us building habits and being strong and fit and better rested so that we can work even better. In the end, we must acknowledge that we have been part of it all along and the rest is a mirror of what societies’ rules have become.



  • I don’t find this convincing. Everyone knows how easy it is to click “yes” without actually knowing what’s behind it even reading it at all. There’s a reason that “I have read the terms and conditions” is the most common lie on the web. Also, no one will read a lot of information. So adding AI sounds great, doesn’t it? While this is a technical opt-in, it is still really close to an opt-out.

    And then the ML generated code. I am aware it’s anecdotal evidence and might not mean anything but every time I tried Ubuntu, I deleted it after a few days because I found the bugs way too annoying after hitting too many road blocks. So if a buggy prone desktop environment additionally accepts ML code, it makes me suspicious and wanna stay away from it.


  • Exactly at the speed of light, the γ-coefficient would be infinite and so would be the time dialation. The eigen time of the moving person would thus be infinitely slower than the non-moving person. From the perspective of the stationary person, the time of the moving person would stand still and thus the person would never say anything. Very close to the light speed, when the coefficients are large, this problem eases but persists. The stationary person would have to wait for very long (and use a massive Doppler shift of the moving signal) to perceive something. At the end of the conversation, it will have lasted much longer for the stationary person, spending years on this. The twin paradox would basically kick in as well. If the moving person is at a speed too close to the speed of light, the stationary person might die before the conversation is over—assuming the stationary person is not immortal. That is kind of a very slow motion, yes. What a dedication, spending a lifetime on a person who can’t slow down ;-) Funny enough, from the perspective of the moving person, the effect is reversed.



  • The only thing that really got me going was small applications I had some interest in. Writing games I will not play never kept my interest up for long. So I’ve been building mini tools I used for teaching numerics classes in meteorology (Python, Julia, Fortran, C) or code I would be using for some tinkering with microcontrollers or similar (Python, C++) when using new languages. For me personally, some iconic projects were a CO2 sensor with an attached display, or very simple internal gravity wave ray tracers. But that’s likely not what you’d be interested in. So without trying to suggest specific applications for you (many good examples in the responses :-) I’d advise to do something you’ll have fun with. Get yourself a small project that generates added value for you specifically (and fun is great added value in my eyes).