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matsemann

24,274 karma · joined February 5, 2013

  val name = "mats"
  val domain = "matsemann.com"
  val email = "${name}@${domain}"
Some projects:

https://github.com/Matsemann/

Fpv with oculus rift https://news.ycombinator.com/item?id=7654141

Thesis on using ea to evolve bicycle wheels https://news.ycombinator.com/item?id=10410813

Optical illusions https://news.ycombinator.com/item?id=18307573

submissionscomments
matsemann··on Sound (2022)
On one hand, it's great that more people are able to more easily make things like these. They're a great tool for understanding, but obviously an enormous amount of work.

But on the other hand, I also wonder if those that get pumped out now, also uses up all the oxygen in the room for the really great ones.

Like, someone shoddily slaps together one for concept X. It's not great, has some misunderstandings, and what it visualizes is mostly random and not the vision of the maker. But it goes semi-viral, and beat everyone else to the punch. So it ruins someone else's motivation to do it properly.

matsemann··on [dead]
Translate: https://www-aftonbladet-se.translate.goog/nojesbladet/a/31oE...
matsemann··on Gemini 4 Argon
See my post here: https://news.ycombinator.com/item?id=50084268

Whether having zero offset or not isn't what matter in the end, but the trail. And you can achieve that with little offset as long as the fork is angled.

(so the grandparent is a bit right in their critique, but not for the reason stated)

matsemann··on Gemini 4 Argon
There are two things involved. What you are mentioning is the fork offset. Whether the wheel is mounted ahead of the steering axis. Either by the fork having a bend, or the mounting point of the wheel not being in the dead center of the fork. Note that this is measured in millimeters, and often not that visible in a picture. I'd say almost every bike except bmxes have it, but maybe not.

But even with zero offset, there is another thing in play. The steering axis is at an angle, a fork never points straight down. So even with zero offset, you still get a trail, which is the difference between the contact point of the wheel at the ground, and where the steering axis meets the ground. This trail is really what matters in the end, not how you get there.

See https://en.wikipedia.org/wiki/Bicycle_and_motorcycle_geometr...

But even better, play with (ctrl+f) "trail" in this simulation: https://ciechanow.ski/bicycle/

There you see the point. Even with zero offset, there is still a trail.

matsemann··on Gemini 4 Argon
They can represent something in vector, but it's always very hard to use the result for anything else. Like, the paths doesn't make sense, aren't grouped to the logic elements etc.
matsemann··on Gemini 4 Argon
I love this one https://www.gianlucagimini.it/portfolio-item/velocipedia/

People drawing bikes, scroll down to see they having made renders of all the drawings. Hilarious

matsemann··on AI coding agents generate more code, but not more software
I don't think my team has delivered any more usable and needed features than before. If anything, we're running faster in the wrong direction, or things just gets never-ending scope creep or whatever.
matsemann··on Show HN: PS2 games statically recompiled to WebAssembly
I don't think that's true. I'm contemplating buying a Switch 2 just to play the new Zelda remake. But I might also now just play an upscaled emulation of the old game or even perhaps a recomp of the remake if it gets made fast.

Aka lost sales.

matsemann··on 2D Vehicles
But very little of the author shines through here, at least after the intro. I, too, would like to hear more about how someone built stuff, but this is not it.
matsemann··on 2D Vehicles
I'm sorry, I really want to like and understand this, but the diagrams are worthless and mostly incomprehensible.

I would've liked to understand more about why it works the way it does, how it achieved the correct feel etc, not just regurgitate whatever the code does.

I would've liked to know more about how the author achieved what they did, not a blog post anyone with an llm could've written.

matsemann··on US imposes sanctions on ICC hours after former judge wins Nobel Peace Prize
Bush nomination? You know there are hundreds of people that can nominate whoever they want? A nomination means nothing, they aren't coming from the Nobel committee.
matsemann··on I hired an illustrator to draw my house. Now it's my Home Assistant dashboard
What are you on about? What ad placements were offered?
matsemann··on I hired an illustrator to draw my house. Now it's my Home Assistant dashboard
It was fun to play with for a while. But after some integration broke for the third time I didn't bother to set things up again, and I really don't miss it that much.
matsemann··on I hired an illustrator to draw my house. Now it's my Home Assistant dashboard
Then they could have decided to not hire an illustrator??

Using "demanded" to get an agreed upon payment is loaded language, and I'm honestly baffled by your takes here.

matsemann··on I gave Opus 5.5 one prompt and six hours to visualize Invisible Cities
Couldn't your bot even spare the tokens to read the article? The one-shot broke apart after 90 minutes, not 6 hours, even with explicit instructions.
matsemann··on I gave Opus 5.5 one prompt and six hours to visualize Invisible Cities
But who cares about those details if they're just random? Why are they there? What do they mean? What was the intention? Sure it's jaded, but just cramming in elements doesn't necessarily impress, other than technically it's better at not overlapping random stuff.
matsemann··on I gave Opus 5.5 one prompt and six hours to visualize Invisible Cities
You draw what you saw in your minds' eye. I can guarantee the author of this didn't visualize the cities like they came out.
matsemann··on OpenAI withdraws three mathematical results
But can the others even be "disproven", given that they apparently are so messy and awful that no humans can follow them? Shouldn't the onus instead be on OpenAI to prove that they're right, instead of hundreds of mathematicians wading through slop?
matsemann··on How did Rosalind Franklin miss the helix in her iconic DNA image? She didn't
https://en.wikipedia.org/wiki/List_of_common_misconceptions

I read through these once. For those where I've been in the wrong, it's two patterns repeating. Either that I learned something in school / as a kid, and it was "correct" at the time but now we know better. Or that the common belief has just always been wrong.

Examples include that "glass is liquid", "bulls hate red", "touching a baby bird will make the mother abandon it", "you only taste salt on part X of your tongue" etc.

matsemann··on “Math 2.0” will need to value mathematical progress more holistically
Off topic, but the font is barely legible on my screen? Firefox, Win11 https://imgur.com/a/8LrOojX
matsemann··on Margaret Hamilton has died
Not the time and place to spread what's obviously lies. She might have gotten too much credit for certain things, but the "facts" presented there are twisted or plain wrong (like her not working there until years later).
matsemann··on Meta and Microsoft take steps to reduce employee usage of Claude AI
Wouldn't mind if people at Microsoft actually dogfed themselves Windows. It's as if the designers and PMs all use a Mac and screw up everything.

Windows 11 shipped with a broken task bar, couldn't even ungroup items. No power users was ever involved in this.

matsemann··on Nobel Prize in Chemistry 2026 to Henri B. Kagan and Kenso Soai
Btw, all this is explained in the "popular information" tab on the Nobel page. Always very interesting and easy to follow:

https://www.nobelprize.org/prizes/chemistry/2026/popular-inf...

matsemann··on Mistral Large 4
Yes, hence why I'm happy there's competition so we're not stuck with US tech. After all, you've proven to be very unreliable allies to us.
matsemann··on JetBrains reported a net financial loss first time in its tracked history
Maybe there exist better ways, but I'd say every coworker I've seen in a VScode variant uses freetext search to find everything.
matsemann··on JetBrains reported a net financial loss first time in its tracked history
It felt quite competitive about a year ago. But haven't tried it since, no idea how it has held up with the other advancing. What I liked was the tight integration with the IDE. I don't particularly like the way I work with Claude now, still wanting to check the changes, navigate code, ask questions, write some code myself etc. Feel claude mostly is for the "bigger" changes. Sometimes I just want to select some text and refactor it, or ask a stupid simple question without the "chat".
matsemann··on 2026 Nobel Prize in Physiology or Medicine: Deisseroth, Hegemann, Nagel
As always, I recommend pressing the "Popular information" link in the side menu for these announcements. Well written and interesting explanations of the science being awarded.
matsemann··on Shimano Bicycle Museum Review
If you didn't understand my question that is ok.
matsemann··on Shimano Bicycle Museum Review
I'm going to Japan in a few weeks and was contemplating visiting this. I'm an avid cyclist and bicycle activist. However, not a big gearhead. What kinds of cyclists is it aimed for? Is it worth a detour?
matsemann··on Gemini 4 Argon
It's at least specific to open source, in my experience. Ask it about some commercial software: it searches some lacking documentation, social media discussions and make some guesses. Ask it about an open source tool: it searches the documentation, if not it dives into the implementation to figure out the edge case.
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