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I remember visiting London and doing tourist walky things for a day thirty years ago and blowing my nose and noticing the snot was black.

Has that changed?


Yes as long as you stay off the deeper parts of tube, e.g the Northern Line. One of London’s biggest sources of particulate pollution is now tube train brake pads

Definitely better than it was 10 years ago. I've visited London once every 1-6 months for the past 10-15 years, and have noted a change. It's still not amazing, though - honestly, if they were to aggressively disincentivize diesel in small cars, I feel like everything would be fine. Subjectively, a day in London seems akin to spending a few hours with a 50cm3 2-stroke chainsaw, or an hour on an old diesel excavator. I do not feel the same way about most US cities, nor even most cities in mainland Europe.

That would be the tube. I cycle everywhere in London and only get black bogeys on the tube. It's brake dust, mostly.

That was more of a trip on the underground thing

You know, I think that has. I remember this happening, but the recent years I’ve been into London on occasion, this doesn’t seem to be a problem anymore.

Some argue that these coarse particles are less damaging for your health than the finer particles we are exposed to today, even if you cannot see them settling as dirt.

Although on that part tire abrasion is probably even a larger factor than exhaust particles, even if it doesn't smell as badly. Some say the factor is beyond 1000x for tire abrasions. Info is hard here, because many sources have their own ball in the game.

But cars today are significantly more heavy, which increases these abrasions nonlinearly.


Still snot, but not as black

(I live in the countryside so I notice air quality quite a bit when visiting. I rarely have to blow my nose at home)


I'd say so for sure. I've lived in London most of my adult life, and in my experience the air is a lot better than it used to be.

Evidence: https://aqicn.org/historical#!city:london

Note that this shows Chinese Air Quality Index, which is different than EU AQI, which is different than US AQI, which is different than... you get the point. But at the end of the day they all use the same data.


That’s usually associated with brake dust inhaled while on the Tube

Just a thought, are there any spell-checkers-backwards? They take some good prose and introduce some common mistakes?

Meta would invest more in AI, trying to tune it to stop it from making people use social media less?

If users leave Facebook because spam, and if spam is easy to generate with Llama and friends, Meta wouldn’t open-source models that so easily generate spam, I mean. The incentives are misaligned.

Meta probably publicly released llama to undermine the hype openai was getting at the time. They were seen as the incumbents about to be disrupted by the new kid and they needed to assure the markets that they were also leading ai and also to drain the perceived moat that was fuelling the openai stock price?

Completely newbie questions from someone outside the field who hasn't been following closely:

Is the spatial memory a fixed size (how big?) or does it grow over time?

And is there a point at which is is saturated and future results decline?


> Is the spatial memory a fixed size (how big?) or does it grow over time?

Fixed number of parameters

> And is there a point at which is is saturated and future results decline?

The model is statistical, so precision will steady improve, asymptotically approaching a maximum


Usually a good trick is to run small deployments at high logging levels. Then, as soon as there are performance issues, you can dial down the logging and get the hours of respite needed to actually make a bigger algorithmic improvement.

Estonia is frequently targeted by massive coordinated and sophisticated cyber attacks. So far it has proved very resilient and secure.

Its so positive to see a language that started as an alternative to ActionScript for making Flash games has stayed alive long after the demise of Flash. Its still used and loved because those using it have remarkable velocity.

They even support React Native https://github.com/haxe-react/react-native

presumably the only difference between an explosive-laden battery and a normal battery is it's capacity. All else will appear identical. And tearing down the battery to inspect it destroys the battery.

Well usually what you do here is start randomly sampling.

During the cold war, Russia intercepted typewriters and teleprinters going to the US and other embassies and inserted implants in them. https://www.cryptomuseum.com/covert/bugs/selectric/

And the US CIA ran the "Swiss" firm Crypto AG, which sold cable-encryption (as in telegraphic / telex coms) equipment with pre-installed back-doors:

<https://www.npr.org/2020/03/05/812499752/uncovering-the-cias...>

<https://en.wikipedia.org/wiki/Crypto_AG>


Their definition of "best copier possible" was "most-profitable copier possible", meaning they had to balance getting people to not hate it so much they chose competitors, while not being so reliable it didn't need warrantees and services and parts etc?

> not being so reliable it didn't need warrantees[sic] and services and parts etc?

The thing is, nothing is completely maintenance free, esp. if there's something mechanical. Make wearing parts wear, core parts robust. All my laser printers were Samsung/Xerox (hah), and their "core" is made like a tank. Only its rollers, toner and imaging/drum kits wear down, and these are already consumables.

The device keeps track the life of every of these replaceable components, and you replace them you hit these marks, because they're already worn down to hinder reliable operation (Imager dies at 9K pages, rollers at 20K pages IIRC).

You don't need to make things fail prematurely to make something profitable. First one of these printers didn't have replaceable rollers, so I had to donate it after 11 years of operation. This one is almost 8 years old IIRC, and it's still going strong. I'll be using it as long as I can find spares for it, because it's engineered "correctly", not "for profit". Meantime, its manufacturer can still profit from parts, toner and imaging units.


I think something that companies often miss is that improving the experience in an area where you have a monopoly can still increase profits by encouraging increased usage of that area.

The example I always go to is U-Haul in the US. They have a functional monopoly on quickly getting a pickup truck or small box car. I used to tell people there was no need to own a pickup truck because I could go grab one for $30 once or twice a month when I needed it.

After a year of shitty apps, constantly being sold things I didn't need because they try to secretly upsell you 50 times during checkout. Having to go into the store to get the keys and wait in line for 1 hour behind people screaming about how they were cheated... I bought a truck.

U-Hual still has their monopoly, but they lost my business, not because I went to a competitor, but because I altered my life to no longer need their business.

Maybe instead of buying eink tablets, I would have kept printing things had printers been better products.


U-haul is one of the shittiest experiences possible. Right there with calling comcast and going to the dmv. Compare that to truck rental from Lowe’s or Home Depot that’s actually probably more expensive but way more pleasant.

Only problem is that everyone else also has figured that out so hard to secure one.


Not copiers, but the ice cream machines in mcdonalds resturants were kept unreliable because mcdonalds made money on the constant repairs. It didn't matter to them that the franchisee was losing money. When 3rd party companies jumped in to fix the machines the manufacturer and mcdonalds acted to stop that happening. There was a court case brought by the third party companies, which they recently lost.

Actually, it looks like the feds have sided with the 3rd parties?

https://www.theverge.com/2024/3/14/24101023/ftc-doj-comment-...


> ...they recently lost.

Who is "they"?


They being the third party repair companies. Johnny Harris did a long piece on the whole story [1].

[1] https://www.youtube.com/watch?v=SrDEtSlqJC4


Why did you write sic after you quoted “warrantees”?

The correct spelling is "warranties" (since singular y becomes i when it gets plural).

[sic] means "I copied the word as written in its original, and it was already written that way" [0].

[0]: https://www.merriam-webster.com/dictionary/sic


I probably meant warranties but warrantees works in the sentence just fine too :)

Hey, as long as it's readable, I don't care. I just wanted to note that I quoted you verbatim, not judge you because you pressed letter "e" twice instead of once in an internet forum. :)

In my experience, people very rarely use [sic] when quoting on internet forums - readers will assume any quote was copied and pasted; and the quoted text is directly above yours.

Sometimes people edit their comments after they realize their mistakes; grammar, spelling or otherwise. I use [sic] to denote that "it was like that when I copied it". It's probably from my "old internet" days (/., local forums, etc.).

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