skysight-inc/HackerNews huggingface dataset:
Traditional collapse is from wave-function to wave-function. The result of the measurement is something different (but related).

The result of the measurement is one of the eigen-values of the observable operator (that's the essence of quantum mechanics, the set of outcomes is "quantized").

If the eigen-value observed is non-degenerate there is only one wave-function that corresponds to that pure state (i.e. the corresponding eigen-function). Immediately after the measurement, that will be the wave-function describing the system (and then will evolve according to Schroedinger's equation). In the general degenerate case, it will be the projection of the wavefunction before the measurement on the corresponding subspace.

Depending on what you measure the probability density corresponding to the after-measurement wave-function may or may not be concentrated at some point. It will happen if you measure the position (you know where it is know!). But if you measure the momentum, the location becomes completely undetermined.
> And there's another issue on top of it, the company 'crown jewels' problem. If Spotify makes it too easy to query Spotify, then it becomes ridiculously easy to compete with Spotify. Which isn't a bad thing necessarily, but not something we should expect Spotify to expend millions of dollars to enable.

Yeah that's true. But mainly the data I want to be able to query is the data that is directly connected to my own activity. If Spotify made it possible to get access to metadata about my activity and the songs that were involved in my activity then it's useful for users but still limits somewhat what a would-be competitor could do. Combine that with a ToS that forbids redistribution of the data and I think Spotify could provide this without helping would-be competitors too much.

Even if a would-be competitor had access to various data from Spotify they would still need to both negotiate agreements about streaming rights with the IPR owners of the music itself, and they would need a lot of marketing in order to get users. In other words they would need a lot of capital. Where would a would-be competitor even get that kind of money? I don't see why any VC or startup accelerator would be willing to fund someone to build this given how big Spotify is and how limited the group of people probably is that would decide to leave Spotify for this feature.

Whereas on the other hand, this kind of access to data could be a premium feature, and then it could be another reason for users that cared about these things to pay for Spotify Premium. Open source third-party clients could implement query engines, building on exactly what you mentioned in the first paragraph;

> Arbitrary data querying are literally the problem databases exist to solve.

Open source clients exists today, and using them with Spotify requires premium. If Spotify provided the data, someone would follow suit in making use of the data in open source clients. Which could further boost sales of premium membership, while at the same time like I said would still not make it too easy for would-be competitors.

Actually, the client wouldn't even need to be open source, it could be a commercial product, and by integrating with Spotify Premium they would still not be a competitor, and they would not need to go through licensing, and marketing might be easier as well. "Enjoy advanced interaction with your Spotify Premium listening experince by using our client."
They feel like a more relatable human if you follow them on Twitter where you can see some of the ideas they're testing out:

@inconvergent:
https://twitter.com/inconvergent?s=09

It's easy to forget that art and creativity is an iterative / scientific process when you just see the finished products.
DC Metro is awesome and what a world-class city deserves, a train from the airport to downtown. (Except for those fare machines from the 80s.)
yeah, I’m pretty sure TrueTime is only defined on Earth, and GPS satellites do take relativity into account in their design.

http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit5/gps....
There are many options but most don't have to be set. We need to improve the tuning experience. See http://smalldatum.blogspot.com/2018/09/5-things-to-set-when-...
This is Theranos level quackery. Come back in one year and tell me I'm wrong.
I agree, weak passwords are a big issue.

I see your point about bruteforcing that key, however I was more talking about bruteforcing the password.

Servers have been stolen in the past, and I am not just talking about a big rack server here.

In Android, all you tend to get is an unlock symbol on the bootloader logo, or a warning triangle.
I would say the opposite, actually. Idiomatic C++ relies heavily on the compiler to optimize away copies, inline functions and objects, optimize away vtable lookups, etc.
The Chinese Internet already blocks nearly all western social media sites. Twitch is a form of social media. Secondly, in June this year, China blocked livestreaming even on domestic sites. So it should come as no surprise that Twitch would be blocked under these rules.
Stenography is a recording something in real-time, e.g., taking minutes, court-reporting, taking dictation, etc.

Steganography is entirely different, referring to the hiding of information inside other information.
This, 100%. After following Keto pretty hardcore for about two years, I strayed off a bit. However, I still maintained most of the habits. During that time, if I had to eat a burger (situational), taking the bun off was never a problem, and as you said, over years of doing this, you omit a significant amount of useless calories.
I don't know why you are framing this like you disagree with me

I can't see that he was framing it like he disagreed with you. You were the one doing that, it seems to me.

You again and again on HN tell of how awfully the people in your life, the people on here who won't talk to you, the people who do talk with you, have treated you. Then you rebuke people for offering advice, trying to help.

Then you tell us "avoiding drama is one of my skills".
One big difference is that Clustrix (YC'06) was a single datacenter consistent cluster, while Spanner can do multi-region consistency. It will be interesting to see what MariaDB does with Clustrix, now that they have acquired them, fingers crossed that they open source the technology.
UBiome received $83M in Series C financing
For those of us who are only half paying attention, how does this compare to Terra[1]?

Are you using something (e.g. LLVM) for code generation?

Can you generate binaries that are independent of the Lua runtime?

[1]: http://terralang.org/
> You have the right to life because you're alive

If I'm stuck on a deserted island, dying of thirst, will my right to life grant me a rainstorm? If I'm stranded in the Alaskan wilderness, dying of hypothermia, is my right to life going to magically conjure a fire? If a warlord invades my village, and puts a sword at my throat, will my right to life stay his hand? Every right is an obligation insofar as there has to be an enforcement mechanism to guarantee that right. That enforcement mechanism is government, governments are controlled by politics, and thus the question of who has which rights is inherently political.

> Throughout history, farmers haven't really fucked with each other

The actual history of the world begs to differ. The inception of agriculture is contemporaneous with the inception of large scale wars for a reason. Hunter gatherer bands may fight, but their fights are usually small scale, both because the bands themselves are small (not very many resources to fight with) and because they have the option of moving (nothing worth fighting for). Farming communities, with their higher population densities, both have the resources to fight larger scale battles, and reason to fight.
So what are their substantiated claims for being able to commercialize this successfully and in a safe manner? The website graphics are nice tho.
Inside cpyext: Why emulating CPython C API is so Hard
I have been using Evernote for years. It's complete for me as far I am concerned. Taking notes and getting synchronized. I am not sure what features they want to add to have tens of software developers. I also don't understand why they have hundreds of employees.
> I am not sure about Rust causing this. I think the safety has long been a goal of any C++ developer, particularly with large projects.

I'd guess that the yearning for safety in C++ may have been what's been driving Rust development, if anything.

Rust's whole appeal to me is it takes the scattered, compiler-specific, opt-in, limited annotation-driven static analysis that I've always been retrofitting into existing C++ codebases and catching problems with... and replaced those checks with a unified, language-standard, opt-out, powerful and pervasive thing, that'll be in use from the get-go in Rust codebases.
I think kawfey meant that in a given day, each scooter can be ridden 20 times before the battery is depleted. I don't think this was a description of the lifetime of the battery — just its daily capacity.
From the GetItem docs[0]

"GetItem provides an eventually consistent read by default."

This seems to meet the definition of "DynamoDB's default settings"

[0] - https://docs.aws.amazon.com/amazondynamodb/latest/APIReferen...
Just to mention a few points:

- The title implies that Spanner is at fault for something, then the article itself admits that Spanner is totally fine.

- Then it goes on to argue that this approach can't possibly work without physical devices for precise time. However, there is no proof whatsoever. Please be a researcher and design an experiment that demonstrates a violated consistency guarantee.

- Finally, not disclosing financial relationships with products which are praised in the article is really low, and has only been fixed after this has been pointed out here. And it is not marked as a later addendum, as usual for changed articles.
Never use the word “User” in your code
The two approaches seem mutually exclusive to me.
Go is a perfect information game. RTS are not.

And the micro advantage is not all that relevant since APM and latency restrictions can be imposed on the AI to force them to play under conditions comparable to human players.
This is much cooler than the exo-skeletons/exo-suits that i imagined after having watched those Alien movies from the 80s/90s!
Bingo. And even numbers can be made up.
This is good and sound advice. The logical outgrowth of this is that the vast majority of organizations don’t need to use distributed databases. (Those that do should probably opt for hosted ones first, and then maybe consider running their own if they have the explicit need, and the substantial SRE budget for it.)
Maybe, I think it depends on how durable they are. And how much they help with the last mile problem.

Consider the cases where someone has the option to take a bus or train, but there's a mile gap on both sides of their commute (or even just one side). So instead they drive the whole distance. If they can hop off the bus/train onto a scooter to close that gap, it can tip the scales to public transit vs taking a car.
> What does it mean for a mountain range to be older than the continent it's on?
The article doesn't seem to go deep enough into the logistics of this apparent contradiction.

That’s one way that terraformation works. It’s quite normal for something like a volcano (or a bunch of volcanoes / mountain range) to form, and then for land to develop around it. This is how many islands develop, and why many islands also have a mountain.

In the future the islands of Japan could become one big continent with a mountain range backbone.
Show HN: MacOS notifications when your websites are down
Thanks for the link to the explanation. It seems like FaunaDB is doing the hard work to show how Calvin can actually be used for all types of workloads.
Finally back in print after 40 years!

https://www.amazon.com/Ignition-Informal-Propellants-Univers...
Flux is great. Because it's Julia, I could write a custom datatype that has fewer bits and test to see if inference and training are possible, and then apply that datatype to ml models without writing custom kernels (except convnets, but I'm going to push code for that.)
How Marvel's de-aging effects evolved
I feel like throwing in a leap hour (basically tz shift) once in a millenia would be more reasonable solution, if for nothing else than letting future generations deal with it instead of trying to futilely pre-empt problems that are not really problems yet.
Deepmind states in their released papers that they limit the actions per minute for the AI so it doesn't just win via speed. Their current approach is a bit simplistic and does not really reflect how humans perform actions but they want to keep it somewhat fair on the "mechanical" aspect of the game. OpenAIs Dota Agent also has similar restrictions although it has shown super human reactions in some cases. This should be tweakable in such a way that the Agent is on a human level and needs to actually be better at the decision making.
From the FAQ

> It's no more anonymous than BitTorrent, but privacy (the possibility to find out who is the owner of the comment/site) will increase as the network and the sites gains more peers.

I think users are much better off using something anonymous out of the box like I2P which has simple out of box support for downloading torrents anonymously.
Suicide Awareness Month *MUST SEE
It's a really bizarre situation that BitTorrent is actually the most convenient consumption mechanism if you want a lot of diverse, specific or old content. All you have to do is be behind the "new releases" by a month or two and wait a few minutes for the downloads to complete, but that's a minor issue.

I think it ultimately is caused by: a) content is not fungible, and b) content-delivery platforms (Netflix, HBO, whatever) cannot seem to agree on cross-licensing the content. This means that they simply cannot deliver the convenience of torrented content. For some reason this translates to "we must protect our content with even 'stronger' DRM" in the business-peoples' minds, but piracy isn't the root of the problem.
I'm not religious at all and still loved 'The Screwtape Letters'. I recently found myself reminded of TSL while watching 'The Good Place'. It's not of nearly the same depth as TSL but plays with some of the same concepts.
Yeah, numbers of calls and emails being sent could be useful as features in fraud detection. I’m totally fine with Apple collecting that. Reliable spam filter for sms and phone calls are something I wanted for more than a decade.
I'd assume 'wildcat did growl' was chosen for for the use of staccato to create rhythm from the consonants, which would be absent with 'wildcat growled', rather than to add more feet to the line, but hey, we are just layering ephemera on ephemera here.
Build in a trial period then with limited functionality/levels. The cost of that trail period is a small percentage of the overall price. For isntance, let's say the game is $12 USD. The trial period of the game would be 2 days 1 or 2 levels & cost $2 USD. you can upgrade to the full game (no refunds) or pay as you go for each level/functionality.

Yes - maybe this is more programming, but we have better languages & libraries to make this happen.

I think there's a way to do this & eliminate nonsense.
Possibly, but the article also gives incoherent information with respect to time. For example, earlier it writes:

"Google said in a letter to U.S. senators made public on Thursday that it relies on automated scans and reports from security researchers to monitor add-ons after launch, but did not respond to lawmakers’ request to say how many have been caught violating the company’s policies. "

And then:
"Google did not immediately respond to a request for comment."

Which is OK, then at the end:

"House lawmakers asked Google in a separate letter in July whether smartphones with its voice assistant tool can or do collect so-called “non-triggered” audio in order to recognize phrases like “Okay Google” that activate voice controls.
The lawmakers cited media reports and said there had been suggestions that third-party applications have access to and use this non-triggered data without disclosure to users."

So what was the response from Google about this issue which they were asked two months earlier, although the article cites it at the very end? Does the "did not immediately respond to a request for comment" also apply to that one?
Thanks, I don't know very well how HN works so I posted it to inform the community.
I know there are a lot of similar services but the first goal 6-7 years ago was to learn how to build this in PHP and it was a success.
eXorus - MailCare.io Founder
Adding qualifiers makes a statement have less content? Please try to imagine using this questionable argument in any other context...

It's a controversial topic and TFA was written by someone with a commercial interest. Everything is opinion. The level of comment-policing I see here makes me quite suspicious of everything in TFA.

[EDIT:] aargh I'll never learn every discussion that starts with "content-free" cliche goes nowhere... just downvote and move on...
Julia. Julia / Julialang is so pedantically tested and the names are pretty meticulously chosen. The algorithms in Base are almost all generic and handle a very wide variety of inputs without catering to them. If you want to learn Julia, along with good software engineering, looking at the Base library is quite recommended.
I can't be the only one who wanted that toy horse to actually walk. It was underwhelming when it barely moved.
I don't see anything wrong with the letter; if you want to be paid for use of your software, that's reasonable. Gates basically expressed that he disagreed with the philosophy of the club. Nothing wrong with that.

What's happening with Jguitar however is that a big tech player that exists because people pay for their software (iOS) setting a precedent where they're actively siphoning content outside the garden and feeding it back to users in their ecosystem, with no attribution or licensing deal with the creator. That's wrong, in the exact same way that homebrew Hackintosh machines built for sale are wrong.
The blog post still uses "kill -17" and "kill -19".
This is ripe for a horror game (and maybe even partially inspired by one - Five Nights at Freddy's). Just imagine an oozing slime that turns ordinary crap into creepy robots intent on eating you.
Facebook's new home gadget might have a creepy camera
Vote out your ridiculous government then.
I’m sure someone has talked about this and proven or disproven it, but I’ve always been a little uneasy with the truetime protocol. I mean it’s faster than Raft, but for the use case maybe we are trying to fix the wrong problem?

If two events are independent, it matters very little what order we record them in the system of record.

My whole career we have been building cause and effect at transaction time but when we debug we stare at log files and time stamps like we are reading tea leaves, trying to figure out what situation A led to corrupted data in row B.

Maybe there’s a way to record this stuff instead of time stamps? Something DVCS style. Or maybe it’s provably intractable.
Android does a much better job at this, and it baffles me why Apple doesn't. I get 5-10 spam calls every day on my iPhone, many of them early in the morning (I used to live on the east coast and am now on the west coast).

On my wife's phone, most spam calls are auto detected as "Spam Likely" and you can report new numbers as spam, which I presume Google uses to update its database of spam callers.
I think part of this is that most of the common knowledge about scaling is hard fought from the 90s/2000 era. eBay got bigger and bigger Sun boxes to run Oracle, until they couldn't get anything bigger -- then they had a problem and had to shard their listings into categories, etc. In the last few Intel cpu generations, computation performance has had small gains, but addressable memory has doubled about every other release, you can now get machines with 2TB of ram, and it's not that expensive.

You can fit a lot of data in an in memory database of 2TB.
India’s New Data Law Is Hurting Facebook and Other Tech Giants
archive.org tried it with whole Amiga software collection https://news.ycombinator.com/item?id=12242095. It lasted 11 days before being removed.
I would suspect the former. There are so many 24/7 news/weather outlets that need to fill air time and draw in viewers with something. Natural disasters are easy ratings.

30+ years ago (pre-CNN), an earthquake in Jakarta, or a typhoon reaching Thailand might get a blurb on an inner page of the NY Times. Those events certainly wouldn't have something like Weather Channel reporters on site pretending to brace themselves in the wind to dramatize the shot...

Beyond "if it bleeds it reads" media reporting, we now have exponentially more ways to observe the occurrence of natural disasters globally than we did even 20 years ago. Statistically these things should probably be observed and compared over climatological and geological scales before we can determine if there are abnormally more or less natural disasters.

I find this similar to how the over-reporting of child abductions and other black swan crimes led to helicopter parenting. Hyper awareness of every single one of these events, rare though they may be statistically, gives the appearance of "a lot more".
FWIW, I think 10 cents is probably sufficient. We have a 10 cent deposit here in Oregon. As a result, on the night before trash day in our neighborhood there is always a lady going through the recycling bins to pull out the cans and bottles with deposits. Growing up in Los Angeles, where they also have a deposit, it was common to see homeless people pushing trains of shopping carts down major thoroughfares filled with cans and bottles.
Oh man, I can't tell you just how much more I like home-cooked food.

Do yourself a favor and start learning how to cook. I took a week of vacation and went to a cooking boot camp. It was great.

It's certainly possible to make food badly at home, and often people do make taste sacrifices for nutrition, but it doesn't have to be that way.

Learn to cook and you have total control over the nutrition and taste of your food.

You can have BOTH!
How come Citibike stops New York from having dockless alternatives? DC has the Capital Bikeshare docked bike system (also by Motivate), but still has rentable dockless bikes and electric scooters.
Saved you a click:

Rubber bumpers that force cars to slow and not cut corner of left hand turns
It's like a paragraph from a "Continental Philosophy" type of writer, except that all the words that would describe people or society have been replaced by "component", "universe" or "vector" instead.
Telling people about risks of non-vaccination doesn't increase vaccination rates
I didn't make it clear what I meant about money. The issue now is that each district is so large that in order to have an influence beyond your own vote you need a lot of money. You can't just talk to people in your community and have a noticeable impact on the outcome. If this were the case, the public would have a lot more influence over government. As it currently stands, one form of mass manipulation or another greatly outweighs what individual activism can achieve.
+1 for Mercurial support. I suspect there are enough Google and Facebook engineers using Mercurial to justify basic support :).
It does make it somewhat cheaper by preventing them from getting gouged by a few holdouts trying to get a better price.
"it is likely that the requested information will be handed over"

I would say the opposite at this point. Cloudflare has a track record of sticking to its principles and has demonstrated a willingness to defend them in court.
The World’s First Practical Quantum Computer May Be Just Five Years Away
The tech CEO who spent $250,000 trying to live for ever