skysight-inc/HackerNews huggingface dataset:
> To my understanding, as a dilettante in the science of fluids, turbulence is an open problem mostly only in subfields pretty far removed from everyday engineering:

> The other group I’m aware of are those who study large-scale turbulence. The goal there is to summarize or coarse-grain the turbulence that goes on within a small computational volume, as a cost-saving measure versus using a more finely-resolved mesh in space and time. [...] But... it’s kinda phenomenological. Not as much fun for many scientists.

The turbulence "closure" problem you describe here is the main obstacle for the prediction of any turbulent flow. This is not far removed from everyday engineering! Practically speaking, the computational complexity of turbulence is far too high, so approximations become necessary.

You've described the basic idea behind large-eddy simulation, but I think you underestimate how interesting the theory could be there. Look into spectral theories of turbulence. I find this sort of research rather interesting, though it's formidable. My understanding is that some of the techniques Kraichnan applied to turbulence in the late 1950s were later independently redeveloped by quantum field theorists in the 1970s. (Note that I'm no expert in these models, but learning about them is on my TODO list.)

> The mathematicians question whether the Navier-Stokes continuum fluid model can be trusted to remain mathematically well-posed in all scenarios

The media unfortunately gives the wrong impression about the Navier-Stokes existence and uniqueness problem. This problem doesn't have much to do with turbulence in the computational complexity sense. I honestly don't see how proving that the Navier-Stokes equations do or do not have unique solutions is going to help turbulence. They've already proved that for 2D turbulence, but that didn't help solve 2D turbulence.

Anyway, your understanding of the problem is basically correct if not focused on the best examples. It's already known that the solutions aren't unique in inviscid compressible flows, but that doesn't stop people from using the compressible Euler equations as a model. They just add an extra condition to make the solutions unique (arguing that the other solutions won't appear in reality). My impression is that many people working on the NS existence problem believe that in certain circumstances the dissipation can become unbounded, and would be limited by different physical mechanisms that should be used instead. Practically speaking this might solved by simply using a different viscosity model, for instance.
This guy literally called them, multiple times, to their whistleblower hotline asking "Do you speak english?" "Of course, what's up?" "So I've been looking into Wirecard..." "Oh sorry, no, we don't speak english" (hang up).

That's not being short handed, that's being negligent. They knew something was up with Wirecard, and they actively tried to ignore all the warnings, and now all stakeholders have lost ~80% of the share value.

So yeah, the DAX is a joke and Germany is a banana republic.
This Bay Area city radically reformed its police department. Here's how it went
It's borderline journalistic malpractice to say "Google" launched this, when it's clearly from the internal incubator, Area 120. This distinction is important - projects in Area 120 have different aspirations and fold frequently. I know people have this perception that Google kills projects too easily, and this just feeds it without good reason. Like - they're telling you to expect a rocky ride, and people will still complain when it folds.
Related: PG’s essay on Design and Research

http://www.paulgraham.com/desres.html
You’re changing the subject. You argued that Twitter might be liable for libel. In order for that to be true, then the speech in question must be libelous.

So, even ignoring 230, is mislabeling a satirical argument as false libelous? It is without a single doubt not libelous.

First of all, defamation (the larger category that includes libel) usually requires a statement of fact, whereas something being satire vs. just plain wrong is a matter of opinion. It is very hard to sue over matters of opinion, by design. This is why saying “the president is stupid” or “the president is racist” aren’t libelous; those statements are opinions and not objective statements of fact.

Second, defamation either needs some form of harm, or it needs to be in a narrow category of statements that are defamation “per se”. The latter category is very narrow and not relevant here, so we can focus on the former. What, pray tell, harm did the president suffer?

Finally, the president is a public figure, and the bar for defamation against a public figure is very very high. The standard is “actual malice”, which requires that Twitter knew that they were lying and did it anyways. If Twitter genuinely believed that the video was not satire, even if you think that’s dumb, then they have a rock solid defense against defamation.

So no, this was not libel. Nowhere close.
An MVP is neither a video or a landing page. Neither of these are products but are marketing material.

An MVP, as the name makes rather plain, is the minimal whole product that you can build and actually sell.

So if you made a video or landing page and think the proposed product might have potential then you build and MVP as version 1.

A beta version is an immature version. You can launch a beta of your MVP or a beta of any subsequent version. A beta does not imply less features, it implies that the features it contains may still have a few development issues.
Places in America with Racist Names
They were very fan of it when electricity prices were low and someone had to pay the enormous costs (~6.5B$ 2020 dollars) of construction with no guarantee of benefits:

"At the time BRINCO was praised for having built the station with no public money from Newfoundland, while Hydro-Québec assumed nearly all the financial risk. It is unlikely that BRINCO would have found other investors willing to take on that risk.[11] In 1981 it made a good return on the investment at almost no risk.[6]"

https://en.wikipedia.org/wiki/Churchill_Falls_Generating_Sta...
To clarify, I meant capital invested _as private propery_ is primarily for rent extraction.

Speculation, as in buying some capital just to exclude it from others to profit from the resulting opportunity cost. Is the kind of rent seeking I was thinking of.

I agree with your notion capital as such and it’s role in production. I just think there could more interesting approaches invented to allocate it. For example to endeavors that don’t produce much rent, or even profit, such as commons based production (open source software being one example).

Markets mainly optimizes for lowering costs, not producing value. They are important tools for managing resource allocation, but thinking of them as optimize for value puts you dangerously close to interpret market prices as a measure of value.
> The bus was moved for "public safety"

They removed the bus so it couldn't act like a moron magnet anymore. They didn't remove the location, they didn't fence it off, they didn't ban hiking. They didn't even impose an IQ test or a basic competency quiz for hiking. Anyone who wants to go out there and re-enact the McCandless Experience is still free to do so, and they're even still free to call SAR when their horrible lack-of-a-plan begins to cause them the predictable amount of personal discomfort.
I thought so too, but the statistics seem to disagree. Wait for backup.

It seems like having a partner was intended to keep cops out of trouble (safe and honest) and that doesn't seem to be working out that great either.
> With BTFS, you can mount any .torrent file or magnet link and then use it as any /read-only/ directory in your file tree.
The alternative is to not invest in companies or asset classes you don't understand. Most people are capable of understanding real estate, cash, and bonds, but the latter two have become severely weakened in the post-Bretton Woods economy. This has also coincided with a huge increase in wealth inequality, and index funds haven't changed that.

Average people should be able to grow their wealth over time without throwing money into inefficient instruments.
For someone like me who has rarely seen snow in my 45 years on this planet, getting a glimpse of an ordinary life in extraordinary climate is quite interesting.
Then shouldn't they be saying "Reform the police"?
I doubt that DanielBMarkham's comment meant that kind of speech. To clarify:

If I say that homosexuality is morally wrong and a sin against God, is that "immediately dangerous to the physical person of specific groups"? Does the answer depend on the existence of at least one person deranged enough to take my statement as a call to violence?

If I say that the police are murdering black people in the streets, is that "immediately dangerous to the physical person of specific groups"? If so, is the group black people, or the police?
You're getting downvoted by the SJW/Twitter crowd on leftie HN. Ignore it bro, we know what you're saying and already agree with you.
Physics 2020 is completely different than Physics 1894. We don't just have a complete understanding of the fundamental principles [1] underlying all terrestrial observations/experiments ever performed, but also a complete inventory of the involved matter. And we have had for decades.

NOT true. The Standard Model does not explain neutrino behavior. See https://www.symmetrymagazine.org/article/february-2013/neutr... for a some examples of that.

Unfortunately a large particle accelerator is not designed to tell us much about neutrinos...
That would not be the way to tune the control loops on a nuclear reactor.
Of course, but the original comment was about the guys doing virtually nothing to be prepared, that is "I'm going to live in the remote wilderness. I have a sleeping bag and a pound of rice, what else could I possibly need".

There's always some risk in everything, it cannot be avoided, but we really don't need people to learn by doing it from zero understanding of that risk, we have plenty of things they can learn from the comfort of their bed. If they then still want to go do the real thing, they'll be much less likely to require rescuing, because they will not just walk into the woods without a map going "I'll just use Google Maps if I get lost".
Ad personalization can be handled by the ad network. The network contract they are interested in buying a car, and Fiat can request their ads be shown to people interested in buying a car. Fiat only learns that you are in the "people interested in buying a car" category if they win the bidding to show you an ad. Not great, since showing an ad, especially well out of the viewport, is pretty cheap.

We can take this one step further with the proposed TURTLEDOV browser API (https://github.com/michaelkleber/turtledove), at which point the ad network doesn't learn your interests and Fiat only learns you were interested in buying a car if you click on an ad.

Or with the proposed FLoC browser API (https://github.com/jkarlin/floc) where your browser uses on-device clustering to present an interest category instead of the ad network learning interests server-side.

(Disclosure: I work on ads at Google, and am friends with the folks behind these proposals)
First, there is massive difference between "theory", especially academic theory and what high school teacher teaches. That is completely different claim.

Second, no I don't really think so. The kind of worst about high school neolithic all history I can say is that what I seen of it was terminally boring.
I find blog posts like this interesting, in that they seem to justify a certain set of ethics (in this case why it's okay to make machines that ultimately result in people dying) by basically ignoring it and replacing it with a completely different problem (type 1 versus type 2 thinking, both of which can be used ethically or unethically). It really seems like a form of self delusion to me.
I once had a joint credit/debit card.

Someone made a fraudulent charge with it (probably the visa side unless my pin was compromised).

My bank refused to refund the money unless I could prove the thief used the visa network to make the charge.

Of course, that information was in their records, which they refused to share with me.

The same bank frequently froze the card for “fraudulent” charges that I made. Eventually, I closed the account.
not at all. I enjoy coding in my bed.
I think our politics should be grounded in solid philosophical principles, after all, that's what gave rise to the high-minded principles of freedom of speech, privacy, and abolition of slavery. Besides, all it would take to turn this from "philosophy" (which is already philosophy of the first amendment and law) to "politics" is for someone to argue for it.

When a group starts arguing for something you don't like from philosophical principles, you'll regret not addressing their arguments earlier. The philosophical issue is already political, and it was made political by MacKinnon and Dworkin during the Sex Wars in the 80s and 90s.
What if I'll tell you Higgs boson’s doesn't exist? ╰(°▽°)╯
At first I wasn't sure if you were being too serious or just literal when that wasn't needed, but then I realized that you didn't read my full comment.
Vector spaces and linear maps between them form a model of the linearly-typed lambda calculus. That is, each type can be interpreted as a vector space, with each well-typed term representing a linear map between vector spaces.

1. The linear tensor product A ⊗ B gets interpreted as the tensor product of vector spaces.

2. The linear function space A ⊸ B gets interpreted as the vector space of linear functions between A and B.

3. The Cartesian product A × B gets interpreted as the direct product of vector spaces (i.e., the categorical product).

4. The sum type A + B gets interpreted as the direct sum of vector spaces (i.e., the categorical coproduct).

5. The exponential !A gets interpreted by the Fock space construction.

This explains why the choice of name is sensible, but I don't actually know if that was the reason why Jean-Yves Girard named it so. If memory serves, he invented linear logic after thinking about Berry's notion of stable functions, but I don't know for sure when the vector space model was invented. (It's not in his 1987 paper, but it can't have appeared very long after that.)
They haven't started with orbits specifically around Canada. It's probably just a matter of where it is easiest to go through the legal/political mess.
This works, it doesn't send the password or hash to the server:

#!/bin/bash

baseurl="https://api.pwnedpasswords.com/range/"
read -s pass
hash=$(echo -n "$pass"|sha1sum)
hashhead=${hash:0:5}
hashtail=${hash:5:35}

curl -s ${baseurl}/${hashhead}|grep ${hashtail^^}

It'll dump the hash and the number of times the given password was found. If the password is not found it won't return anything.
At least you can always clone and then just ask git...

EDIT: Actually, since this was a fork, it would probably be a pain to hunt down, even with a local checkout. But it usually works.
The standard model and relativity are treated as two completely separate things. This means we don’t actually understand the underlying physics the universe operates on. Even some very basic questions are completely unknown.

PS: By unknown I mean experimentally.
I use fieryfeeds on iOS. It integrates with Nextcloud news and Pocket and is quite featurefull. I moved most of my reading off twitter which I used to access with Tweetbot.
Do you support the police shooting at citizens on their own property?
This is entirely inaccurate. Researchers are not as you describe at all, at least those who become professors. They are exactly the same.
One would think so, but then the continual accusations of someone being an "actual Nazi" get thrown about almost constantly these days.
This used be a thing but the IRS caught on and added Abusive Roth IRA Transactions to their list of Listed Transactions. Most are collapsed down into what amounts to an arrangement to contribute beyond the allowable Roth IRA limit.
It's not the matter.

If you use a saas, unless it's open source and you can self host, you are at the mercy of it.

If the service is good enough and the team behind it seems in good faith, it can give you confidence for the switch.

But promising to adopt a standard then not doing it doesn't inspire confidence.

The system being closed source (no open API can change that), they need to build trust with some users. Particularly the tech saavy ones that have been burnt in the past and hold data that is precious to them.
Doesn't stop tracking pixels.
IRA withdrawals are taxable at income rates: 37% for that kind of jack. He's delaying rather avoiding. If he was really smart, he'd have done this outside of a retirement account and paid the 20% capital gains rate.
> Imagine seeing a homeless person begging in the street and getting angry because he wants your help when he should have just not made all those "stupid" "unprepared" decisions that led to it.

I don't know that people get dumped into the Alaskan wilderness for being unable to pay medical bills.

> Or imagine someone having a heart attack and getting angry because they should have had a better diet and exercise throughout their life - it's their own stupid fault that they're dying and why should I bother helping them.

Never hang around ER nurses.

> Or a suicidal person - just get a therapist or stop thinking those stupid thoughts that make your problem worse.

Really never hang around ER nurses.
If you're going for a videogame then it could still be Touhou :)
She does seem to have made something of a side hustle out of arguing against large scientific experiments. From my point of view, just build it. Sure money could be better spent elsewhere in principle, but it could also be spent reasonably well on the FCC. And I never understood her degree of concern, the sums at play here aren't that big. She'd be better off just campaigning against tax avoidance if she's so concerned about the state coffers rather than arguing for cutting research spending which may or may not actually be redirected towards other research.
I’m on mobile so won’t give this comment the substance it should, but I want to nip this ridiculous notion in the bud.

The key concept here is immunological memory. Maintaining antibodies for years for non-severe diseases (how SARS-2 presents for the vast majority of people) is not a good thing.

Rather, there are memory b cells, memory t cells, and other forms of immunological memory. These cells lie dormant and when exposed tk the antigens corresponding to the previously fought-off pathogen (SARS-CoV-2 in this place) they “activate” and start cranking out antibodies exponentially. In other words, after you no longer have any active circulating antibodies, you still have these memory cells that persist for DECADES.

TL;DR: it is not a problem that antibodies only last a few months. That is how the vast majority of diseases work. It would only be a problem if we had evidence that there was no immunological memory to SARS-2, but on the contrary we have tons of evidence of that, even if it’s not fully characterized

Please don’t fall for this narrative that has went around for months. I truly believe that there is a faction of irrational doom-sayers who are collectively losing their shit over this in a way that they would never do for other serious diseases like Influenza. I won’t speculate on their motivations for doing so, I have a few theories but I truly do not know why there is so much of this craziness going around.

Sorry for the lack of citations but immunological memory is a robust and well-studied phenomenon and I encourage anyone concerned about COVID-19 to read some papers about it in a general sense
Control theory for fun can be really fun. Using control systems for solving problems you are familiar with can help develop an intuition, that you can then map to other problem domains. Years ago a peer at LucasArts taught me how to use PIDs for game cameras, and I've used them everywhere since.

Very simple rules can create lifelike emergent behavior. This is an example of 2 simple motors using PID to try to target a red dot, in 3D, with gravity on:
https://www.youtube.com/watch?v=8hfKs02QHR4&list=PLpDgOnZpfh...

I can watch control systems all day.
I'd say that also depends on how you're prepared. If you don't want to prepare or think safety is boring and you want that extra kick of adrenaline, sure, go for it, but I'd also prefer if you make sure that you're not going to be requiring a rescue operation and a life time of support for that little extra kick.

Or we could just tax it accordingly so it gets pretty expensive to do, but the risk is priced in. Want to remove the helmet and swimming vest or go winter hiking naked? Sure, just pay here and off you go.
Show HN: Biden vs. Trump statistical forecast model: polling and search trends
It'll also function just fine on your roof - the issue with population density is just that bandwidth is limited per area, and so there's much lower bandwidth per person in metro areas.
That's a decent point, and I expect they know better than me since I'm no S&R specialist.
The title could be: Researchers and Founders and Mothers.
I think mothers have a lot in common with successful researchers and founders. They are laser focused on tasks (can do many in paralell) and have long term vision (a family). Although mothers dont get attention and press. They are very underrated
This is a global constellation. The initial orbital planes are arranged so that the density of satellites is maximized in middle latitudes, where most of the affluent world population lives.

With a LEO constellation, unlike GEO, you can not just serve a single area. That is why you have to go with a very big, worldwide system.
> there is no founded technical justification for excluding GAEN from the components of the system

That can unfortunately be said of quite a few apps, but it's good that they pointed it out here. In any case, if you're running a phone with Google Apps installed, privacy can only be an illusion.
Pity the beta is closed already
Congrats on the launch.

To clarify: Are you guys specifically focused on people over 50? The website makes no mention of the 50+ age focus. I just got a gift for my mom, but the only reason is for an exercise coach who can create a specific routine for someone who is 65 years old. We don't need the nutrition coaching.
He did it in a Roth IRA.
degrees from horizon?
Ice carries radio waves a lot better than water. Once sunk through the ice, the entire probe, or a small buoy, could float up to the underside of the ice and transmit clearly to the surface.
I wonder how intelligently this handles piece download order. Torrent clients usually use rarest-first download algorithm, but if you've mounted a movie and you're playing it with VLC, you'd probably want it to download sequentially so there's as little time spent buffering as possible. You could download the pieces on demand (whatever piece the application is trying to read), but I suspect that will provide a suboptimal experience, especially if your download speed is barely above the bitrate of the movie.
I would imagine it would be a lot less likely for two officers' body cams to both fail at the same time. But I'm sure that's not related to the change at all.
Isn't that just IPFS? And forget piracy; it's great for ready access to any data that you want mirrored to a lot of servers at once - imagine if you mounted /var/cache/yum over BTFS:) (...maybe with an overlay filesystem in the middle; I forget the internals of yum's cache...)