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scrlk

8,635 karma · joined March 24, 2022

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scrlk··on UK government advises deleting emails to save water
The regulators determine how much the utilities can spend on maintenance and construction activities, not the companies.

If these activities were not capped, the companies are naturally incentivised to build more to boost their regulated asset value, which means they can make more money.

scrlk··on High-severity WinRAR 0-day exploited for weeks by 2 groups
Windows 11 uses libarchive: https://en.wikipedia.org/wiki/Libarchive#Users
scrlk··on HRT's Python fork: Leveraging PEP 690 for faster imports
In crypto, you have centralised (e.g. Coinbase) and decentralised exchanges (e.g. Uniswap). Decentralised exchanges operate onchain via smart contracts.

This article from a16z explains the mechanics of reordering transactions for profit (MEV): https://a16zcrypto.com/posts/article/mev-explained/

scrlk··on Los Alamos is capturing real-time images of explosions at 7mths of a second
I'm reminded of Grace Hopper's famous nanoseconds lecture: https://youtu.be/gYqF6-h9Cvg?t=78
scrlk··on ThinkPad designer David Hill on unreleased models
Starting in 2024, Lenovo adopted the 'conventional' control/function key layout for ThinkPads.
scrlk··on ThinkPad designer David Hill on unreleased models
The 25th Anniversary ThinkPad was a modified T470. I assume that the cost issues were related to a requirement to minimise the number of case modifications required from the stock T470. Incorporating a ThinkLight would require a redesigned display lid.
scrlk··on ThinkPad designer David Hill on unreleased models
> When designing the 25th anniversary ThinkPad, which came out in 2017, Hill brought back the ThinkLight, but he actually wanted to have – for the first time – two LEDs instead of one. The dual lights would have eliminated shadows and provided even better illumination, but unfortunately, this effort proved too costly to make it into the final product.

Dual ThinkLights appeared on two models - W700 & W701: https://youtu.be/LSHP7VRs0bI?t=658

There was also a dual screen variant, which had a secondary screen that popped out to the right of the primary screen: https://youtu.be/mzhZH9LK1ac?t=26

scrlk··on Ask HN: What happens if/when crypto will significantly go down?
Yes, it's simple supply and demand dynamics at work. FWIW, I think the treasury companies bear a resemblance to the 'ponzinomics' of Olympus DAO and its forks in the last crypto cycle. They ran to tens of billions in market cap before going to zero.

This is the first cycle where TradFi is getting properly involved, so no idea how high we go across BTC and the rest of crypto.

scrlk··on Ask HN: What happens if/when crypto will significantly go down?
MicroStrategy's average is currently ~$72k: https://x.com/saylor/status/1947266086627360854

There are a now a number of companies attempting to run the same crypto treasury strategy with BTC and alts. I suspect the next FTX style blowout might be caused by these treasury companies.

scrlk··on Is an Intel N100 or N150 a better value than a Raspberry Pi?
The incompatibility between DDR4 and DDR5 DIMMS is also enforced by a physically different notch and slot. It's always been this way.
scrlk··on Office for Nuclear Regulation: Our assessment was not bananas!
The online article in question: https://worksinprogress.co/issue/the-bad-science-behind-expe...
scrlk··on 2025 Iberia Blackout Report [pdf]
What you're proposing regarding communication/control channels is already present: the system operator has SCADA links to transmission connected generators + an energy management system to help them control their system.

See Part C here (e.g., SOs having the ability to control generator setpoints): https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=uriserv:...

scrlk··on 2025 Iberia Blackout Report [pdf]
The automatic voltage regulator (AVR) of the generator and the on-load tap changer (OLTC) operate on different timescales (AVR = quick; OLTC = slow). OLTCs are typically set up with a voltage deadband and a time delay to prevent 'hunting' (i.e., repeatedly tapping up and down).
scrlk··on 2025 Iberia Blackout Report [pdf]
I suppose other system operators might have better a state estimator and wide area monitoring system. But real-time system operation is universally an engineer sitting behind a desk, looking at their screen, and trying to make the best decision with whatever data they have.

The actions that were taken did not strike me as out of the ordinary.

scrlk··on Germany and Italy pressed to bring $245B of gold home from US
The TradFi version of "not your keys, not your crypto".
scrlk··on Steve Jobs would have fired everyone
I can't wait to see Apple's take on the Compiz cube.
scrlk··on Bill Atkinson has died
Bill Atkinson demoing MacPaint at the Macintosh introduction in 1984: https://youtu.be/1tQ5XwvjPmA?t=1781
scrlk··on Google introduces webcam "liveness check" option to reCAPTCHA
cf. "Please drink verification can": https://i.imgur.com/dgGvgKF.png
scrlk··on How I ended up flying for Yemen's national airline – and survived
There was a Mentour Pilot video on the Jeju Air crash that touched upon this. With a dual engine failure on a 737, you lose both generators and fall back to the emergency batteries (no RAT). The aircraft remains flyable, but it's extremely challenging - you need an operational APU to make things a lot more manageable: https://youtu.be/9GbmGUk8Y0M?t=2001
scrlk··on How I ended up flying for Yemen's national airline – and survived
The OP of that thread later went on to do a contract with Kam Air of Afghanistan, which is another good read: https://www.pprune.org/terms-endearment/662364-kam-air-expat...

A highlight:

> YA-KME for example, has a strange little thing where you’ll get an ECAM Red ENG 3 FIRE after you detent into CLB. For f*ck sake, don’t discharge the bottles, there’s no fire. It’ll shut up after 3 or 4 seconds. Again, reason unknown, everybody just kind of lives with it’s quirks now. KME is commonly referred too as “Kill Me”, as this is the aircraft with the most random issues. Brake temps breaking the charts when you start up from cold and dark in DXB for example. You’ll get used to them, and you’ll get used to which ones are “KME Normal” and KME actually trying to kill you.

scrlk··on Tallest Wooden Wind Turbine
Ostensibly for aesthetics. However, the new T-pylon design has been discontinued for cost reasons, and there were complaints about noise in high winds: https://eandt.theiet.org/2025/01/06/national-grid-abandons-c...
scrlk··on Moody’s strips U.S. of triple-A credit rating
The US now has a lower credit rating than Microsoft:

> The Microsoft corporate credit rating is AAA and Aaa by Standard & Poor's Rating Services and Moody's Investors Service Inc., respectively.

https://www.microsoft.com/en-us/investor/faq

scrlk··on Why Bell Labs Worked
Dynamic random access memory, RISC, relational databases, laser eye surgery.

Less mainstream but significant: scanning tunnelling microscope, high temperature superconductivity, fractal geometry.

scrlk··on Why Bell Labs Worked
As an interesting counterpoint to the idea of "just hire smart people and give them a lab", Ralph Gomory, head of IBM Research (a peer of Bell Labs in its day) from 1970-86 said:

> There was a mistaken view that if you just put a lab somewhere, hired a lot of good people, somehow something magical would come out of it for the company, and I didn't believe it. That didn't work. Just doing science in isolation will not in the end, work. [...] It wasn't a good idea just to work on radical things. You can't win on breakthroughs - they're too rare. It just took me years to develop this simple thought: we're always going to work on the in-place technology and make it better, and on the breakthrough technology. [0]

[0] https://youtu.be/VQ0PBve6Alk?t=1480

scrlk··on The surgeon who used F1 pitstop techniques to save lives of babies
These days, Ferrari is probably the last team I'd want to take advice from on tactics, strategy and effective communication... :^)
scrlk··on First American pope elected and will be known as Pope Leo XIV
https://archive.ph/KRJYg
scrlk··on Gemini 2.5 Pro Preview
How are you using it?

I find that I get the best results from 2.5 Pro via Google AI Studio with a low temperature (0.2-0.3).

scrlk··on A Tektronix TDS 684B Oscilloscope Uses CCD Analog Memory
> It'd be fun to have a book of tricks from this era.

Though it isn't a book, the Hewlett-Packard Journal is a gold mine for this type of content: https://web.archive.org/web/20120526151653/http://www.hpl.hp...

E.g. An 8-Gigasample-per-Second, 8-Bit Data Acquisition System for a Sampling Digital Oscilloscope (October 1993): https://web.archive.org/web/20120526151653/http://www.hpl.hp...

scrlk··on What Is "Induced Atmospheric Vibration"?
I'm going to speculate it was the following:

1. System was running with low inertia due to a high amount of renewable generation (mainly solar).

2. Something caused a large amount of generation to trip. Lack of inertia in the system can't arrest the frequency drop.

3. Rate of change of frequency (ROCOF) protection kicks in and trips renewable generators; interconnectors to France also trip as they are suddenly overloaded. Islanding and blackouts ensue.

scrlk··on What Is "Induced Atmospheric Vibration"?
The GB grid has a nationalised system operator (NESO). The transmission and distribution networks are privatised.
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