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markvdb

2,587 karma · joined March 15, 2013

Free software geek and classical guitar teacher. Particularly proud I've helped organise https://fosdem.org since the beginning >= 25 years ago.

I take short to medium term consulting projects on things I like:

- where free software and video touch - small to medium functional web applications using django - and more ...

Contact me through mark@fosdem.org .

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markvdb··on SFO Quiet Airport (2025)
I'd love to also have a low smell airport.

So many airports direct passenger flow through a shopping zone drenched in perfume fumes. Disgusting as far as I'm concerned.

Not to mention the screaming visual pollution of course.

markvdb··on Fusion Power Plant Simulator
Combined heat and electricity production is uncommon in the US, but much more so in Europe. Especially in the Baltics, Scandinavia and the Netherlands, non-CHP generation is rare. Related: higher energy cost, and elaborate local heat distribution networks.
markvdb··on Ask HN: Founders of estonian e-businesses – is it worth it?
Vague. Early 2027 perhaps with a lot of luck, for a regime that will at best solve a very limited subset of issues.

I'm not holding my breath.

For some perspective, look at how something with a much smaller scope is being "revolutionised". I'm speaking of intra-EU dividend taxation, as regulated in EU directive 2025/50 ("FASTER"). A slightly less complicated dividend double taxation regime between EU member states. Applies to dividends on shares in public companies only. If the shares in question have not been traded within 5 days from the ex-dividend date. If the gross dividend is below 100k€. If the member state is not very small. From 2030. Using EU standardised forms. In some cases, resulting in direct reduction of the double taxation at source. In other cases, refund of excess double dividend tax within 60 days.

The clean solution would be to tax dividends in the tax residency member state of the receiving individual only. That would require a rather large leap of trust from very financialised EU member states like .ie, .lu or .nl. Perhaps possible with a long transition period and compensations. Only there's also bad faith state actors like .hu randomly torpedoing EU legislation to extract concessions. This discourages other member states from even trying to implement the clean solution.

markvdb··on Ask HN: Founders of estonian e-businesses – is it worth it?
Adding a layer does not simplify. It adds complexity.
markvdb··on Fontcrafter: Turn Your Handwriting into a Real Font
See also: https://primarium.info/handwriting-models .
markvdb··on Statement on the comments from Secretary of War Pete Hegseth
Hours ago, OpenAI raised $110B.
markvdb··on Magical Mushroom – Europe's first industrial-scale mycelium packaging producer
Depends on the species. For something easy to grow like oyster mushrooms, straw. Do decontaminate the straw. Cooking water or hydraulic lime water should work for that.
markvdb··on Europe's $24T Breakup with Visa and Mastercard Has Begun
VISA + Master just work _for now_. Debanking Nicolas Guillou[0] was a financial Greenland.

Short-term negative-sum transactionalists are governing the US. Even if November stabilises things somewhat, the cat is probably out of the bag.

Trust comes on foot, but leaves on horseback. _That_ is why a well-integrated EU-based payment system is needed.

[0] https://en.wikipedia.org/wiki/Nicolas_Guillou

markvdb··on Europe's $24T Breakup with Visa and Mastercard Has Begun
That's interesting. In Belgium the pre-integration Payconiq could not do that.
markvdb··on Claude Composer
> Music is about the human experience, emotions, mistakes, accidents, discoveries.

Pro musician here.

There's piles upon piles of human-generated music soullessly regurgitating stock patterns with inane lyrics since long before Alan Turing was even flown in by the stork. Most recent popular music by far is bland sausage factory production.

Why not allow yourself to be moved by beautiful music, wheter it's machine generated or not?

markvdb··on The Waymo World Model
> Ultimately the US will go down hill to become a Belgium.

Sharing one's opinion in a respectful way is possible. Less spectacle, so less eyeballs, but worth it. Try it.

markvdb··on FOSDEM 2026 – Open-Source Conference in Brussels – Day#1 Recap
OSS and FOSS are global, not American or EU or anything. The geopolitical situation is on another plane. FOSS can and will be used as a tool for strategic autonomy, for better and for worse.

Why would one at this very moment look with suspicion at a FOSS contributor for the sole reason (s)he's American?

markvdb··on France Aiming to Replace Zoom, Google Meet, Microsoft Teams, etc.
My fingers always ache when I hear praise for the company that through its incompetence nearly lost me my company's domain name... twice. Shame on me for staying with them.
markvdb··on STFU
The original TV-B-Gone [0][1] was designed by the legendary Mitch Altman [2].

[0] https://en.wikipedia.org/wiki/TV-B-Gone

[1] https://www.tvbgone.com/

[2] https://en.wikipedia.org/wiki/Mitch_Altman

markvdb··on Canada slashes 100% tariffs on Chinese EVs to 6%
The Mercosur-EU trade deal, the India-EU trade deal and this China-Canada trade deal. A pattern perhaps? A frantic search for reliable trade partnerships, or just random noise?
markvdb··on Eat Real Food
Why would I trust these recommendations? Much higher quality dietary information is available from much more trustworthy sources than the US government du jour.
markvdb··on Panjandrum: The ‘giant firework’ built to break Hitler's Atlantic Wall
A clear view of WW II in all its complexity is important. The current tense geopolitical context makes that even more so. Have you noticed how the current head war criminal in Moscow is glorifying his WW II predecessor?
markvdb··on Show HN: PinSend – Share text between devices using a PIN(P2P, no login)
Some feedback:

- Superb domain name.

- I'd clean up less relevant bits as much as possible. The subtitle for example says "Share text and images instantly and securely across all your devices". I'd s/and\ images// and s/across\ all\ your devices//.

- There is a strong use case for sharing just text. I'd encourage you to focus this app on just that. If tempted to add file/image/whatever sharing, I'd break that out into something separate.

- Shortening the url would be an expression of focus. Think https://pinsend.app/sessioncode .

- The copy functionality for each text string shared is great.

- Why not make the qr code visible by default?

- Let your audience decide how they want to use string sharing functionality. Don't presume on their behalf. What if two technicians on either side of a theatre want to use this to share secret streaming strings? You'd want to make sure your messaging is welcoming to them too.

markvdb··on Denmark to raise retirement age to 70
- Asset inflation can be tackled with flexibility. The level of flexibility my acquaintance showed is not required. He bought a fixer-upper two apartment building with a garden in a livable small walkable eurozone city for 5k€.

- The productivity growth really has had incredibly strong deflationary effects. So much more, more diverse, tastier and healthier food for example, for so much less money.

- The growing affluence has really created incredible opportunities for scavenging from the waste stream. A practical example. About half of the food I eat is leftovers from a nearby school. I'm proud to be saving good food from going to waste _and_ it lowers our expenses quite significantly.

markvdb··on Denmark to raise retirement age to 70
> It's utterly insane that people need to work more and longer as technology increases productivity. A truly dystopian economic system.

Keynes was almost right. He underestimated the ability of future generations to consume conspicuously. Also, the need for many to fit in by working, but I digress.

Many don't _have_ to work more and longer. I'm speaking of a large class, very much overrepresented on HN, of smart, healthy westerners with no dependents to care for. We have only one major problem. We live in this bubble nudging us towards conspicuous consumption - gently or less so.

My job closely resembles Keynes' 1930's prediction. Sometimes I work (much) more. Not because I need money, but because the job is interesting. Interesting as in, me learning, contributing something positive to other people's lives, growing my family's financial resilience and robustness, or just enjoying the flow.

markvdb··on Denmark to raise retirement age to 70
> Do we not have ambitions to have people work less, enjoy what little life they have more?

Isn't that something for the individual to decide, not the collective? Many derive from work a lot of meaning in life. If working is what makes some people happy, it would be nice to not punish people for working until they die.

> I'm not saying this is an economically easy problem to solve, but we focus so much on economics and so little on policies that make people happy.

Absolutely!

markvdb··on How to live on $432 a month in America
I've seen better publicity for a simpler life. Jacob Lund Fisker[0]'s ERE comes to mind.

[0] https://en.wikipedia.org/wiki/Jacob_Lund_Fisker

markvdb··on Trump administration halts Harvard's ability to enroll international students
Wouldn't it be easier for Harvard to move to where it can function as a university, instead of putting up with this? It's not entirely unprecedented. See https://en.wikipedia.org/wiki/Central_European_University .
markvdb··on Building my own solar power system
I see 7k€ for 12kWp, retail, for a diy ground install set for our summer house. That's before 4k€ in subsidies. No net metering, and feedin compensation is capped at 0.02€/kWh. But at 3k€ net, who cares? Even with the low electricity rates here, this makes sense. Even for a summer house!
markvdb··on Building my own solar power system
Already happening in Flanders for those on dynamic pricing.
markvdb··on Solar grants held hostage in Pennsylvania legislature – as demand soars
Solar has won the market's backing. Whatever Pennsylvania politicians decide, they better take that into account.

In most places, solar is perfectly competitive without subsidies. Take my prosperous corner of the EU. No direct subsidies, nor the indirect subsidy net metering is. .37€/kWh average residential all-in electricity price caused a solar boom anyway.

The short term result of that solar boom is an ever steeper duck curve [0]. Negative electricity pricing more frequently and longer. Lots of creativity aligning production and demand. Think dynamic pricing, energy storage both as heat and electricity, and more. Great to see these products and services springing up.

I see early signs of much larger actors adjusting to the changed electricity landscape. Ever larger scale industrial scale clients are embracing the entire spectrum of solar, electric steam generation, heat pumps and battery storage. Exciting things with the market providing a strong tail wind.

[0] https://en.wikipedia.org/wiki/Duck_curve

markvdb··on The great displacement is already well underway?
Thank you for you interaction.

> There is no “shortcut” to vast wealth, because if there were then everybody would be using it as the default and it would no longer be a shortcut.

Absolutely. I was not writing about shortcuts to vast wealth though.

> What are often described as “shortcuts” are highly situational opportunities with lower-than-typical risk, which by virtue of announcing them to others means the opportunity has passed and the risk has increased.

Of course the shortcuts are highly situational opportunities with lower-than-typical risk. "above median earner", "healthy", "dual income", "without dependents" are situational to a large extent. Yes, that means some people have more agency.

Some will play the personal finance game smart. They realise the smart way is to focus their game away from the situational, to where they have most control: on the expenses side.

Where we disagree is about announcing a shortcut to wealth equaling it disappearing. Not every informed actor decides to take the shortcut. Not all the situationally blessed want to ruthlessly focus on expenses.

> For there to be vast amounts of wealth hoarded by a few, there must also be vast amounts of exploited people desperately getting by on table scraps.

I share this analysis.

> There is a finite supply of wealth, and if we do not build systems to redistribute it equitably then it will always and inevitably by hoarded by the few lacking a moral compass or basic empathy for their fellow man.

Redistribution of wealth is a tricky problem. It requires a delicate balance between individual agency and collective force. Push too far towards either and humans will be suffering unnecessarily.

markvdb··on The great displacement is already well underway?
Many a healthy above median earner is unaware of the privileged shortcut to capital class available to them. Spend a third of your income for nine years and you're there. Make that a quarter to finish in six years. Especially for dual income people without dependents, that's quite feasible.

Not diminish your analysis. I just hope it adds a bit of perspective.

markvdb··on University of Texas-led team solves a big problem for fusion energy
Not necessarily. A slightly different approach might become lower TCO in the medium term:

- moderately overbuild solar

- batteries for short term storage

- natural gas for seasonal storage

markvdb··on DNS piracy blocking orders: Google, Cloudflare, and OpenDNS respond differently
In the country where the physical person making the request is located would be a logical solution. Not saying it would be a good solution, but that would follow the logic of most international fiscal law. Super hard to implement though.
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