skysight-inc/HackerNews huggingface dataset:
Yeah, you are right that it's very easy to break apart nitro groups, but it's not much to do with the (O-N-O) bond angle. The bonds themselves in -NO2 groups are very weak, because nitrogen doesn't provide enough bonds to make things stable. Remember oxygen wants to "hold on with two hands" as we said in high school chemistry, that is to make a double bond or two single bonds. In NO2 each oxygen only gets one and a half bond (quantum mechanically it is in a superposition between having single bond to the first oxygen and double bond to the second, and vice versa). So this part becomes electronegative. Nitrogen, on the other hand, wants to have three bonds in total, but is forced to have four: 2x 1.5 to the oxygens, and one to the rest of the molecule. So this part becomes electropositive. Chemists will speak here of a resonance structure, which you can imagine is something that it is quite easy to excite.

When the nitro group breaks apart, the nitrogen finds another nitrogen from another NO2 and forms N2 gas, which is highly stable due to its triple bond, so this part of the reaction releases a lot of energy and produces a lot of gas, and is very fast since it does not depend on any other sub-reactions. And stuffing lots of just nitrogen (without oxygen) into a molecule is in itself a way to make it very explosive - see azidotetrazolate salts.

In NO2 decomposition, the oxygen then goes on to find carbon to make CO2, and hydrogen to make H2O, releasing more energy and producing more gas. But this first requires breaking down the relatively stable bonds in the hydrocarbon, so it actually consumes energy from the NO2 decompostion, before it releases more energy than it consumed.

Then stoichiometrically you want to ensure that you have enough oxygen for all your carbon and (ideally) hydrogen, or you'll end up producing a lot of "unburnt" stuff which is inefficient. Notice that for each carbon in a linear hydrocarbon chain (-CH2-) you need 1.5 NO2 groups to get a complete reaction into CO2 and H2O. If you only have 1 NO2 group, CO2 will be formed and you will have excess H2 which is not combusted.

Now as you say there are some stressed rings or cages that are hideously sensitive explosives, precisely because the hydrocarbon bonds have also had their stability reduced. But these typically are not practical explosives. For that you want the stuff to be a solid at a wide range of temperatures, you want it to be non-sensitive to friction and impact, and you want it to have a low vapor pressure. These are all details which depend strongly on the internal structure of the molecule.
The problem with this logic is that most definitely "popularity" is already proxied by some data that they are collecting and thus could be acted upon by the machines. So either Google are poor coders or this is something different than popularity.
> Facebook's "market" is advertising in which it isn't the leader.

What are the alternatives for social ads? Google is a different kind of ad service , kind of like billboards vs tv
The killer bit here was that the author already had a PoE run available: That's the killer for nearly all good IoT projects. PoE is king, and unless you're building new, you probably don't have it.
Binance customers frozen out of withdrawals via key UK payment network
I'm not sure why this was linked. Parity decided to stop developing their Ethereum client and this repo has been sitting unmaintained for about 2 years now, it will almost certainly not successfully sync with mainnet.

The Parity codebase was taken over by new maintainers and turned into OpenEthereum: https://github.com/openethereum/openethereum

However, writing and maintaining an Ethereum client is an exceptional amount of work with very little benefit, the primary OpenEthereum maintainers recently announced they would stop maintaining OpenEthereum and would start pouring their energies into an upcoming client called Erigon. https://medium.com/openethereum/gnosis-joins-erigon-formerly...

Erigon is a much better client.
Apple Mac Sales Triple in India After Apple Opened Online Store Last Year
Juul Fined $40M over Claims It Fueled ‘Vaping Epidemic’ Among Children
The data limits for a QR code are rather small. Note the storage is also used by ECC payload, which generally isn't optional. https://en.wikipedia.org/wiki/QR_code#Storage

The menu is probably going to insist on using lower case letters, and the "Binary/byte" encoding will be interpreted as something between 7-bit ASCII and UTF-8 depending on the client. With the ECC payload 2,953 bytes sounds like quite a lot, THEN you look at the giant art linked in the article for even small examples. The size (version) 40 takes 177×177 width of decodable, clearly visible pixels.

At that point the QR code is in the ballpark of a printed 8.5x11 or A4 sheet of paper, and is far less useful to humans than a laser printed page with multiple sizes of lettering, super high contrast, and no requirement for a computer to decode.
Yes, but eg it doesn't show up in bandwidth monitoring.
Yes. A Postgres which is currently only 1TB in size. It's read heavy, the write workload is very low in tens to spikes of low hundreds per second whilst the read is in thousands per second. The workload is stable during traffic spikes due to app caching and CDN caching (for guests).

I do this for cost reasons, self hosting the database is so much cheaper than the managed options that for the same cost I can run the entire app stack, load balanced web servers, etc.

No containers anywhere but maybe in the future I'll add some.
You had me at "monthly ransom".
Or NFC in your phone. I can't imagine it being more convenient than that.
> have elected to have, to the benefit of all

Laws about required parking spaces were put into place many years ago, by different people, with incomplete information about the future.

When that information changes, the laws should change too, yes?

For example, as the Boomers age, fewer will be able to drive, making their current independent life in the suburbs unsupportable. Many elderly are able to walk even if they can't drive. But if mandatory minimum parking laws prevent the construction of walkable areas then fewer options are available to them.

These laws, often put into place in the post-war boom, don't reflect current life, so must change.

Hint: retired Boomers are long-time residents.

> I'm paying exactly the required amount for it,

Unless you have metered or paid permit parking set by free market rates, I have a hard time understanding how you can be so certain.

Cities change their tax levels and fee structures often. Surely you don't think that roads and parking happens to be perfectly funded.

BTW, many cities have gone into debt to fund their growth. What you see is "a modest, short term illusion of wealth in exchange for enormous, long term liabilities" - https://www.strongtowns.org/the-growth-ponzi-scheme/ . The current residents are not "paying exactly the required amount for it"; it's been pushed off to future residents.

Rather like parking minimum laws.
What a rubbish. Life is certainly less stressful in Cyprus than in US of A, where people worry every minute about there absolute and relative incomes, and keep busy creating pseudotheories to justify their "heaven on earth".
> Cryptocurrency is a beautiful technology

On the surface, ya, but the proof-of-waste at its centre should be reason enough to consider the technology more harmful than not.
Not just brain stuff, I’m a walking example of weird hormone issues screwing up my ability to work well
About potential magnetic interference with medical devices
I agree with basically every word in the article, but would never ever short Bitcoin. Simply because the market can remain irrational longer than I can remain solvent.

> When will it happen? I dunno. I’ll be astonished if we get through 2021 without an explosion.

Everything he wrote was also true in 2020 or 2019 or 2018 or 2015, and yet there was no explosion. Why does he think Christmas 2021 will be different?
I understand the benefits of phyiscal menus, but I for one relied on QR codes when working in China. I could go into a restaurant alone and use screenshots + google translate to essentially feed myself. Without a QR code, it was a gamble as to whether there were photos for me to see to order. Moreover, I didn't have to assume the waiter knew English, they'd just ferry out my food to my table when it was ready. I relied on this multiple times whilst there.

There's certainly benefits to both, and offering both makes sense to me. As with all things, a few options tends to be good.
Can we make these NFC stickers as well at least? Seems like that would work far better.
It's not tricking, but it is deceptive since they haven't chosen to submit. The current mental model of forms are to save data entries when you actively submit.

Yes, there are some settings panels that automatically save changes, but I have never seen it for forms.

If there's an submit button on that form then that would be an even stronger signification to the user that nothing will be sent to the servers until you click that button.
Makes sense.

How do you handle firewall? Just open up the source IP with the IP of wherever the Application is hosted?
IMHO self hosting your database (even in the cloud) is the best way to do it.

You have control over the version.

You have control over features.

You have control over performance.

It’s tons cheaper for greater performance - especially when you go over a few hundred gigs.

Yes, the hosted ones have built in replication - but my data is far too valuable to put in the hands of a third party. If they lost it - they could only shrug and say sorry and that’s it. The TOS indemnifies them.

I think it’s kind of honestly lazy — to not take the management of your data in your hands if you run a database of any significant size.

That being said, we do replicate and backup 9 ways to Sunday.
Well, part of that might be because ‘mv *.c *.cpp’ doesn’t do what you think it does.
The regulatory credit income is about what they're spending on R&D, so another way to look at it is "Tesla have GM and Fiat funding their R&D".
I'd add that Kanye's music has been slipping for the last few records. That could also just be my taste, but he's had a few cuts since 2018 that definitely weren't ready for release. I imagine his attentions were focused elsewhere. I mention it as a partial explanation for his diminished critical attention.

The idea that Kendrick gives the public what Kanye promised is something I'd never considered. I'd love to hear you unpack that a bit more.

Kanye's circumstances have changed and in a lot ways he's no longer the person he once was. He's achieved a great deal, and for better or worse his priorities have shifted. That seems to happen when you become a mega-influential billionaire celebrity artist. I agree that it seems to have put him out of touch with his roots and I can see why that might feel like a betrayal of sorts. In that sense it's understandable to be disappointed in him.

I think there's something special to his trajectory and maybe when it's all said and done his legacy won't be one of social change that fostered equality, but one that blew open the door on what a creative individual is capable of doing with THAT much influence. He's not the only billionaire artist, but when it comes to that class of hyper-ambitious creators with these resources he's in a very small minority who have both the influence AND have retained the mindset of a "Capital-A Artist" along the way. I'm curious to see how far he can take it. Maybe his destiny is to explore THAT possibility to it's extreme. Maybe that's his legacy.
The way it's phrased doesn't make much sense but they could contact whoever is responsible for GDPR enforcement in a particular country (if in the EU) and make a complaint against you. But it's unlikely to come to anything (especially if all the data was deleted) and you won't be arrested.
you got it.

decriminalization == it’s still illegal, but you won’t get prosecuted for it (this deincentivizes law enforcement from pursuing it)

legalization == it’s legal and now you can buy it and consume it.
On the iPhone, you literally just open the camera app, point it at the QR code, and a drop-down notification will prompt opening it in the browser. Thus, it is absolutely looking for one always as you describe.
When I click the edit button it goes to a dark theme. I didn’t see an option for a light theme, or did I miss it? I can’t use dark themes.
I was bitten by this as well, luckily I was setting up ufw after docker (and was really surprised that dockerized services showed up in port scan).

To be fair, it did not look to me that docker intentionally punched holes in firewall- it purposefully places it's rules in separate table/queue, which due to way iptables work, hampers the firewall rules.

However, once it became apparent to docker developers, it should have been made a priority to be fixed, as it is counterintuitive default.
The "long range doorbell that doesn't do evil things" seems like a product space that is a bit of a vacuum.

We've recently had an office built at the end of our garden. Finding a doorbell that will work from the front of our house has been a futile mission so far. I have little interest in a camera, I certainly have no need to connect anything to my (lack of) smart home. I just want a thing that rings in my shed when someone pushes the house bell.

"Long range" wireless bells just don't seem to cut it. Everything else is massively over engineered. It's a strange thing that maybe my best solution seems to be running a very long wire down the garden...!
Ask HN: Why does Chrome not trust this trusted valid cert?
I was reading an article about how Apple is asking some of its employees to wear police-grade bodycams[0] and clicked to view the product it was referencing. Once on the manufacturer's website[1] I was wondering how much they cost so I clicked the Buy button which took me to their buy subdomain[2], but then I got a certificate error. I can't figure out why. The issue can be reproduced on another M1 MacBook Air with the same Chrome version but not on Ubuntu 20.04 with the same Chrome version. Chrome uses the system's certificate store so if the dialog says trusted - which it does - my understanding is that it should not be showing this error.

I'm on an M1 MacBook Air running Big Sur 11.4. Chrome is version 91.0.4472.114 (Official Build) (arm64).

Video: https://www.dropbox.com/s/1vrftuwtx4s1gf8/untrusted.mkv?dl=0

[0] https://www.frontpagetech.com/2021/06/28/exclusive-apple-making-employees-wear-police-grade-body-cams-in-response-to-leaks/

[1] https://www.axon.com/products/axon-body-2

[2] https://buy.axon.com/ccrz__ProductDetails?viewState=DetailView&cartID=&portalUser=&store=&cclcl=en_US&sku=74004
Netflix on Android Will Let Users Play Unfinished Downloaded Videos
Hierapolis, Turkey's mysterious 'portal to the underworld'
To be honest, I know how to type `./configure`, `make` and `make install`. And I know more about Gnu Make than I would admit in a job interview (for fear of someone expecting me to work with Make).

But so far, life has been too short for me to waste my time on Gnu Autoconf. And I don't feel guilty about this, or like someone who doesn't know fundamentals.

Autoconf is by all accounts a horrible system. Gnu Make ain't much better.

So I can't fault people for trying to avoid this mess.
The sooner we can accept that most people don't have the skills or the desire to work in the knowledge economy, the better off we'll be. We are, today, perfectly equipped to handle that reality.

It's true people need purpose in life. They can find purpose in art, in travel, in maintaining a personal garden, in maintaining connection to their community. Not through bullshit jobs. What's the point of humanity if we can't truly automate the toils of physical and knowledge labor to somewhere south of 10 hours per week? What's all of this for, anyway?

Let people have their legal weed and live a little. We don't need to work so hard. We've achieved so much innovation in the past few thousand years, we ought to enjoy it before perishing, or continuing focusing our lives wholly on work.
6. Think it would be 7 if I counted ones I left.

I'm absolutely not going to say I'm some all star that is the reason the companies did well. As my career has grown, my impact on company performance has grown. I've been lucky enough to be a part of a lot of good teams.

Early in my career, I was lucky with the companies I got jobs at. They happened to have great teams with incredible mentors that I was able to lean on. But, that luck let me see what good teams look like and I've looked at potential jobs through that lens for a while now. It also helps a ton to look at those companies as an investor. I try to look for companies that are dominant in their markets and have solid growth when evaluating potential jobs.

My first company that I interned at while in college, then transitioned to full time while still in college was acquired by one company after being there for a few years, then that larger one was acquired a year or so after that by a fortune 50. I saw the dark side of beuacracy and that kind of made me focus on small companies that have lots of potential. One was a part time contractor gig where I was helping out my ex manager build a company after the one I worked for him before that got acquired and that part time company was acquired less than a year after launch. There was another one that happened about 90 days after I joined. My most recent one was acquired after working there for 4 years by another fortune 50 but they are allowing us to run independently and I have an amazing manager so I don't think I'll be moving again any time soon.
Office re-entry is proving trickier than last year’s abrupt exit
Ok. Then add your password on these system when you design like that. That's not the default as most people feel otherwise.
Weird how science still claims race exists, even as they show a dark skinned scientist

When can we be post-race?
I think docker/podman with firewalld behaves the same way. I was astonished when I found it out. I think you can however bind to localhost exclusively by using the ip in the argument:

docker run -p 127.0.0.1:5555:5555 ....
Someone that was predicted to own 5% (1mm) of all Bitcoins just died in Costa Rica

I doubt they had a survivorship and secession plan for their bitcoins and I doubt Bitcoins become less scarce

Shorting Microstrategy and Coinbase via puts are good ideas though. Microstrategy isnt overleveraged yet but its easy for them to be. Coinbase is just a share dump, thats the entire purpose of direct listings. This has nothing to do with Bitcoin.
And you didn't have separate test and production sites?
Your screenshot shows an earlier date (25-Jun-2018) next to the definition.
This should maybe be the standard example.
The XBox game bar is useful for work actually - it is easy to make videos of bugs or how to use app with it.
For people who are curious about this and want to read further than the original Ioannidis and the Meyerowitz-Katz papers, here are two citations I found enlightening. The first is a frequentist analysis that is age-stratified, so is likely to control for the rather different age structures in different countries[1]. The second is a Bayesian approach[2]. Both seem pretty reasonable to me, and don't display obvious axes to grind.

[1]: https://pubmed.ncbi.nlm.nih.gov/33289900/

[2]: https://www.medrxiv.org/content/10.1101/2021.05.12.21256975v...
Googling "ads in windows 10" shows lots of examples.

https://www.google.com/search?q=ads+in+windows+10&tbm=isch

Does that answer your question?
was talking us vs other places in the world.
A more charitable interpretation is that most developers simply don’t want to risk their paycheck over a small battle they’d likely lose anyway.
I had been a heavy Duolingo user and collected a great record until I had a crazy 2 days busy with some company work. Once I finished I recognized all my records were gone. I never use the app again =))
Use IPv6 from the beginning and banish NAT.
This is awful advice. I have worked for startup's and large companies, and I would hands down say you will learn more and become a better engineer working at a well run startup then you will ever become by joining a hyperscaler as a line engineer and trying to play the corporate politics.

The author is correct that by the numbers it is far more likely that you will make more money if you just sell your soul to a FAANG, and if all you want is to make a quick buck and spend it all on overpriced real estate they are entirely correct. Every single one of their other points is just indicative that they have worked for awful startups. Large companies can be just as bad, but the difference is in a large company most of the problematic points will break down lower in the organization. If you think every team at all the FAANGS is great at mentoring or doesn't put in long days or has anything approaching a reasonable hiring and review systems you are ignorant of just how much variation there is on different teams.
Not OP but you bring up something interesting. I'm nearing 10 years of exp and I am faced with a rather unique role. I can join Twilio as a Developer Evangelist.

I'm a good developer, I enjoy coding but I also love teaching, blogging, and mentoring. This would be a dream role, but does it close off other opportunities to me? I am slightly disillusioned with enterprise software because of how chock-full of politics these places are. I'm too old for the early stage startup scene, so I'm wondering whether this would be a good opportunity.

What do you see as the roadmap for someone who specializes in teaching software development, and being an advocate?
Benefits of Using Shopify for Ecommerce Platform Development (2021)
I think there is an issue with 'platform monopolies'.

There are really only 2 major players for smartphone apps, and that's incredible power.

It may not be so much an issue of monopoly but simple regulatory concerns over value chains.
That trailer is great, epic music, I have no idea if the game is playable, but I guess that's beside the point
That is (hopefully) a conscious, on purpose choice made by the author. Otherwise they could just disable the paywall. Medium doesn't show any reading limits if you don't have them enabled.

(a different matter is whether enabling the reading limits does increase or reduce the blog's reach...)
Mom uses a Laptop with Linux and it is only for surfing the interwebs and occasionally printing and scanning.
And when bad consequences emerge, we will just fire bad government and then ban marijuana again. Marijuana was banned first in 13th century.
So: taking measures helps. Holding back does not help.
Alternatively, running all your services as VMs also helps.

Having root in a VM doesn't typically give you any rights on the hypervisor (at least not on eg Xen).
Derivatives guy here. Perfectly fine opinion, but two issues.

Why now? This is a general investing issue. Trading costs money, holding a put costs money, so why will the market do what you think in this time frame?

Why are the puts cheap? This could be substantiated with some numbers, esp implied volatility. Are they cheap vs history? I don't know, but the reasoning should show why you think so. Note I'm not looking for breakevens. That can be worked out from the price, but it doesn't tell you whether that is more or less likely than the market's opinion.

Totally reasonable points otherwise.
the point is people 1) should be educated 2) should make up their own damn minds.
That is true, unless you believe that the scarcity isn't at all relevant to the price in your anticipated future state. After all, the sacks of garbage in my kitchen are scarce but you don't see people tripping over their shoelaces to pay $30,000 a piece.
At a summer camp, juice boxes and Bitcoin mining
BTC is not money? What it's?

Disclosures · I have personally made money buying and selling Bitcoin.
I'm not rich. A lot of the ones early in my career weren't very lucrative.
I wonder if someone who's not known to Google to like HN would get the same result?