wcoenen

8 ms·

61.
by wcoenen 1y ago
Related note for those surprised that 3DES is still a thing: the Mastercard specifications still use 3DES for pin block encryption. This is used each time you enter the pin for a Mastercard card! There is no alternative yet. Support for AES
62.
by wcoenen 2y ago
The energy levels of electrons bound to atoms/molecules are quantized, and therefore the energy levels of photons emitted/absorbed (when those electrons change energy levels) are quantized. But as far as I understand that is just
63.
by wcoenen 2y ago
> I'd want speed cameras that are miles apart... and the determination that you get a speeding ticket is that you traveled several miles at high speed. That's what SPECS does: https://en.wikipedia.org/wiki&#x2
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by wcoenen 2y ago
Isn't the simpler conclusion here that one should look for the signature where it is supposed to be? Instead of using an excessively general XPath like "//ds:Signature" that might find any signature in any unexpecte
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by wcoenen 2y ago
If I understand correctly, this paper is arguing that investors will desperately allocate all their capital such that they maximize ownership of future AI systems. The market value of anything else crashes because it comes with the opportun
66.
by wcoenen 2y ago
> Is there a radiation treatment or similar for lettuce? Yes. Lettuce which has been sterilized with ionizing radiation has the radura logo.
67.
by wcoenen 2y ago
Tangentially related to the topic of the bandwidth efficiency of Teams: screen sharing in Teams has a very low framerate of about 3 to 4 fps. It is driving me insane, especially when the presenter starts relentlessly scrolling up and down a
68.
by wcoenen 2y ago
It is not possible to go into orbit from a single speed boost at the surface, even without an atmosphere, because the "orbit" would still contain the starting point. In other words, the orbit would intersect with the surface of Ea
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by wcoenen 2y ago
Another article from 2022 by the WSJ on that topic, titled "Building a Power Grid to Span the World": https://www.wsj.com/articles/building-a-power-grid-to-span-t... archive.ph link: https://archiv
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by wcoenen 2y ago
Cows and chickens cannot fix nitrogen from the air. They eat the nitrogen-fixing plants. So in a sense they don't "generate" fertiliser, they only concentrate it.
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by wcoenen 2y ago
Because small differences early in the trajectory result in large differences later on. Think of driving a trailer backwards and imagine you weren't allowed to do corrections after a certain point.
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by wcoenen 2y ago
This is about Directive (EU) 2022/2380[1]. It does mention USB-PD: > In so far as they are capable of being recharged by means of wired charging at voltages higher than 5 Volts, currents higher than 3 Amperes or powers higher than
73.
by wcoenen 2y ago
That would risk unintended consequences. For example, suddenly slowing cars on the highway down to 30 kph because a small road with that speed limit runs right next to the highway.
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by wcoenen 2y ago
Entanglement does not allow for "Zero-Latency Control". This is a common misconception. See "No-communication theorem": https://en.wikipedia.org/wiki/No-communication_theorem
75.
by wcoenen 2y ago
Weather models can't compute some of the important physics that happens at sub-grid scale, and use various tricks to deal with that. How sure are you that these traditional models aren't also heavily tuned on past data to maximize
76.
by wcoenen 2y ago
> Everyone doing anything with RSA is on 4k or larger. The Let's Encrypt intermediate certificates R10 and R11 seem to be only 2048 bit.
77.
by wcoenen 2y ago
I think you're thinking of Hashcash? Not invented by Satoshi, and not pay-to-send exactly. It's proof-of-work for email. https://en.wikipedia.org/wiki/Hashcash
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by wcoenen 2y ago
> including things like fully automated CL/PR's which have been around for a decade I haven't seen this yet so I'm intrigued. Is this a commercial product, or internal tooling?
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by wcoenen 2y ago
Low response time (i.e. time it takes for a pixel to change color) to reduce ghosting, and a high refresh rate up to 240 Hz. These monitors are expensive and do not have very high resolution. If you're not a hardcore fast reflex gamer,
80.
by wcoenen 2y ago
Vape batteries tend to be low quality and are notorious for having thermal runaway incidents. https://tobaccoreporter.com/2024/09/10/vapes-major-culprit-i...
81.
by wcoenen 2y ago
The rocket equation implies that if you want to maximize the delta-v a rocket gets out of a certain amount of fuel, then you should get the dry mass as close to zero as possible. Eliminating landing legs helps a lot.
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by wcoenen 2y ago
If SF, LA and Phoenix are already allowing Waymo cars that don't have anyone in the driving seat, then why not cars without controls? What's so special about leaving out the controls after having eliminated the driver?
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by wcoenen 2y ago
This clicked for me back in 2015. A friend shared something on Facebook that sounded plausible but felt off. I looked into it, and added a polite comment pointing out that it was a hoax. With a link to the Snopes article. I expected a react
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by wcoenen 2y ago
> And yet, I still don't think that explains what's going on with people. And the frank truth is, I don't have an explanation. Humans are social creatures and feel the need to align with those around them. Combine this n
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by wcoenen 2y ago
The WSJ article doesn't properly explain where the negative prices come from. It only briefly mentions "subsidies", but I don't think that is a complete explanation. My understanding is that the negative prices come from
86.
by wcoenen 2y ago
It seems like each time I am in a call with a colleague located near Chennai, India, the call will have a high chance of being interrupted by a power cut. It serves as a good reminder that access to a reliable electricity grid is awesome an
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by wcoenen 2y ago
> Its a good example of what LLMs arent capable of. If they think the word Mississippi has the letter A in it (per article), thats a strong indication that the transformer architecture may never be able to achieve AGI. It only indicate
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by wcoenen 2y ago
> list the number of states with “A” in the name Is that really a good example of LLM capabilities? LLMs don't even see those letters because of tokenization. It's a bit like asking a Chinese speaker questions about imaginary
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by wcoenen 2y ago
The same amount of nutrients can be had from plants with lower nutrient density. One simply has to consume more of the plants.
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by wcoenen 2y ago
> the panels irritates the pasture I think you meant irrigate :-)

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