skysight-inc/HackerNews huggingface dataset:
There is a practical engineering reason why the OLAP equivalent doesn't seem to exist. General purpose storage engines, and this applies to RocksDB, are like the C++ STL in that they provide good average performance across a wide range of common cases but are nowhere close to optimal if you have a well-defined type of data model and workload as your use case. You can always gain an integer factor increase in throughput by designing a less generalist implementation with a similar interface.

As with the C++ STL, the limiting factor is the number of tunable parameters available i.e. the amount of internal architectural flexibility built into the implementation. OLTP storage engines are pretty simple, so a manageable number of behavioral parameters can usually get you within 3x of the throughput of a more targeted design, which is acceptable performance for most workloads that are not ingest-intensive.

OLAP-ish storage engines, on the other hand, are at least an order of magnitude more complex to implement and have many more degrees of freedom depending on the expected data model and workload. There is a lot more data model and workload diversity in OLAP than OLTP, which makes implementing the effective internal architectural flexibility and set of tunable parameters that need to be maintained very unwieldy. If you limited yourself to the number of user-definable tuning and configuration parameters as an OLTP-oriented storage engine like RocksDB, the performance gap between a generalist implementation and a more targeted implementation will be more like 10-100x, which needless to say is huge. This makes the practical applicability of any "general purpose" OLAP storage engine that someone would want to use quite narrow, which diminishes the value of implementing a general purpose engine.

This leads to the current reality that there is a zoo of specialist storage engines for OLAP-ish workloads -- graph, time-series, event processing, geospatial, classic DW, etc. Much more generalist OLAP storage engines that do several of these models could exist in theory but the bar for technical sophistication and complexity is much higher than for OLTP.

Open source projects in particular tend to have a natural ceiling on the number of man-years invested to get an initial implementation of an architecture, which inherently limits the expressiveness of that architecture for software with this complexity.
So what happens to stuff falling into the outside black hole?
> and Ireland in _1997_

That was SuperQuinn right?

I remembered ordering from them back in the day. They had their own dialup (not over Internet) and a Desktop App that really worked quite well!

They were serious innovators ... couldn't do enough to "Crown the Customer", as old Feargal would have said.

Too bad property prices overtook their business model!
I doubt they'll be able to compete on costs, on the retail front Amazon Go style stores are certainly the future. Legacy retailers (and grocers) are simply too labor heavy and their large retail footprint will come back to bite them.

Even if last mile delivery has a driver, operational costs will be far lower.
3B1B is amazing at explaining concepts. Lots of commenters in his videos studies math/cs/physics and tell stories about finally understanding a topic they misunderstood in university.

His videos, I think, are best consumed twice: once before you explore a topic, so that you go in with a solid overview and know the key things to look out for; and again after you've studied in depth, when you are able to predict what he will say next, which reinforces you learning.
It's useful to remember that the first instance of the government using "State Secrets" as a defense to withhold evidence was in a civil trial about culpability in the deaths of contractors that were testing Cold War equipment...

... and when the relevant documents were declassified, it was revealed that the secret the government was hiding was that test was run on a plane with a grossly-substandard maintenance history.

https://www.thisamericanlife.org/383/origin-story/act-two-0
MSSQL IDE, SSDT is awesome
Spreadsheets Are Code: Software Engineering Approaches Applied to Spreadsheet
Outsiders may think people made a lot of money in the ICOs. I wanted to answer that question so I dug a bit and found out what really happened: a lot of the developers didn’t make much money because they are just like any average people — when prices go up, they don’t sell and when prices come down, they hold.

Some of them even “diversified” their gains into many other projects in the same space, so even it may look great on paper that someone who has invested in many crypto projects must be insanely rich. The truth is many of the had a spectacular run directly into the ground.

The big money is not made in speculation as always. It is made when we build something which will last for a long time and we capture the value in the future (in the next decades).
Improving Website Performance Can Help Save the Planet
Multimorbidity Explorer – A shiny app for exploring EHR and biobank data
Apple doesn't want Nvidia support in macOS, and that's a bad sign for the MacPro
Well, I never knew what Wag was before this, but I guess I won't be using them in the future.
>You can't delineate between who will and won't kill your dog no matter what system you use. That's the problem.

I think essentially every dog owner will have done something to "kill" their dog but were saved by chance. Dogs sneak out the door when you're bringing groceries in, yank the leash out of your hand, escape fenced yards, among a number of other possibilities of them getting loose. The saving grace is that 999 times out of a thousand there's no traffic or the driver is paying attention or fluffy comes back before anything happens. In a situation like that it's hard to say if the walker is worse than any random owner or walker, or if they were just unlucky.
Right, it would be inappropriate to claim that Plato predicted the big bang!

He did arguably explicitly predict that basic mathematical/geometric forms underlie the structure of the universe. E.g., that atoms would be composed of pyramids, cubes, dodecahedrons and that the behaviour of atoms would be based upon the different geometric properties of basic forms.

That idea is only partially correct, however. Atoms are based on the basic mathematical forms -- but on the spherical harmonics of electron clouds, not point geometries. Whoops! Otherwise, the idea is commensurable with modern atomic understanding.

Earth, water, air and fire correspond not to elements (ice can melt, obviously) but to phases of matter. (Solid, liquid, gas, plasma).

There is a reason Classical Greek philosophy underlies western civilization. They were not dummies and there is still a lot we can learn from them. It's not like all their ideas were examined in the 1800s and we took all the good ones, leaving the classics as a sort of intellectual skin worth shedding. Instead, it is the core we build on. It's worth understanding the core -- and giving them the benefit of the doubt to identify interesting ideas.

Like that the universe begins with "the one" :)
Understanding propensity score weighting
Most managed language runtimes I know allow you to opt out of a GC, or to tune it to your workload.
> Youd have to give away 100% tho, if you gave away 70% you'd still owe 70% on the remaining 30%.

presuming you mean 100% of everything over 10m then yeah, that would be fine.

> Also, remember this is income tax. Not capital gains tax. So that means 10 million in salary, not stock sales.

That's the strange thing. I'd think progressive capital gains tax at a comparable rate would also be needed or directory compensation will be switched to stock instead.

> This conversation is about an infinitesimally small portion of the population. It's kind of a weird conversation to play out across the news media and campaign ads. "Liberals want to tax you" ads are actually one of those 12,000 people paying the television to shout "please vote not to tax me" to the other 99.99% of the population.

It's not just the wealthy that are against taxing the wealthy. I personally don't think it would make a lick of difference, and may even harm the economy in the long run, for the reasons I've outlined in the excessive number of comments I've left on this thread. If it worked I would support it, but I don't believe it would.
It's just what I've heard from people who've worked there and others who've had friends come back from prison. The consensus was about the same, but you're right, I personally don't know what prison is like.
This is one of those articles that feels like it’d be unthinkable a few years ago - now there’s a lot to nod along to like this is almost common knowledge. It’s a big deal! This is the “crunch” in the tech sector - expect a fair amount of qualified engineers in the streets competing for work in the next few years. Not out of some downturn, but as investors demand cost cutting instead of investment to get their returns.

The only good news is that the “surviving” companies from old industries will continue to need to grow their tech platforms.
Ah yes, "soulless corporations", as opposed to the rich and soulful 30 year tradition of the holding company which owns A. Lange, Baume & Mercier, Cartier, IWC, Jaeger-LeCoultre, Montblanc, Officine Panerai, Piaget, Roger Dubuis, and Vacheron Constatin: https://en.wikipedia.org/wiki/Richemont

Way to stick it to the Man by buying an overpriced set of gears from him!

You can see how much individual design is going on because each of these outfits puts their OWN name on the same basic product.

If you can't see any artistry and skill in the making of Apple Watch faces https://www.youtube.com/watch?v=aK7KPw9bLfI or their wrist straps https://www.hodinkee.com/articles/hodinkee-apple-watch-revie... then I don't know what "artistry" and "skill" are supposed to mean.
If this happened in France (or many other places) there would be strikes, barricades, burning towers of tires, the whole works. American workers are incredibly timid.
> On the warehouse side, the incumbents are doing that.

Near to me, in North Dublin (Nice and close to the Airport; good access to Dublin Port), Tesco have their distribution centre. It's massive. Clearly visible from just about anywhere [0]

If I recall correctly, Wallmart in the USA were doing this back in the 90s ...

[0] https://goo.gl/maps/NLcLneN5Bi92
Do not buy single tickets on the tube, ever.

They are designed to discourage you, and to push you towards solutions that are better for TfL and the environment: contactless cards.

Get a contactless bank card, Apple or Android pay on your phone or smart watch, or buy an Oyster card.

If you know you'll be travelling a lot for a week or two, look into a 7 day travel card which you load onto an Oyster card, and gives you unlimited travel for the zones you're interested in.

You can still travel outside those zones, but will pay a fare increment.
Show HN: Musish – Web client for Apple Music
Leaders are massive readers
CNC is programming "for keeps".

Any tiny little error in your gcode has a chance to crash the machine. Unlike a computer crash, a CNC crash results in broken metal flying across the room and anywhere from $5- to $5000 in damage. I programmed for a heavy machine shop for a year before I gave up and went back to making websites.

Hobby CNC is fun though, it is amazing what you can make out of wood when you can shape it with sub-millimeter precision. Also hobby machines are not strong enough to cause serious damage when you crash.
"may be"

the openly pro-capitalism not-so-invisible hand of the NYT chief editor at work

https://fair.org/home/top-nyt-editor-we-are-pro-capitalism-t...
>> if people regularly trust their children with person foo person foo can probably be trusted with pets

Isn't that chain of trust completely backwards?

You'd start by looking after pets, then once you have loads of good references, you might just be able to upgrade to looking after kids?

Full disclosure: zero pets + three kids
The federal government can literally print money if it wants. I don't think we need to worry about concentrating wealth in its hands through taxation.
Zimbabwe cuts internet indefinitely amid violent crackdown
pgb can timeout connections and close them if they are idle for too long, which is usually the way to deal with stale connections.

Not sure what solution are you imagining would be the right one.
Fascinating to see my home through the eyes of a visitor.

I moved here in 2012 and was nervous, coming from a more relaxed UK city (Manchester).

I found London more welcoming, greener, safer and quieter than I had expected. Most people's first experiences are Euston or Kings X followed quickly by the Northern or Piccadilly lines, and that can taint you: most of London is nothing like any of that.
I wonder if his MSVC debug performance wors would have been solved by linking against the release CRT
The boredom is an interesting risk factor, and I'm wondering what could be done to address it.

For software, I'm familiar with a process of intentionally designing and executing a safe breakage as a sort of drill to keep people's heads in the game---no better way to find where you accidentally didn't have redundancy than by turning off a system that should have a fallback and seeing what else breaks. Is that practical for CIC, or is there insufficient redundancy in CIC to do something like that safely?
I at least have the author credit for stating that the statistics should be taken with a grain of salt.

How is this possible? Well, remember that it may not be. The figures should be taken with a dose of skepticism.

The US actually has very generous social services when it comes to medical care for pregnant women and their babies. CHIP and Medicaid cover pregnant women up to 200% (~$30K) or sometimes 300% (~$50K) of the federal poverty level.[1] Waiting lists are non-existent for most states as they have an exemption for pregnant women or newborns..[2]

[1]https://www.medicaid.gov/chip/eligibility-standards/index.ht...
[2]https://www.medicaid.gov/chip/eligibility-standards/waiting-...
This is Crane AI tho... what happened to that? Change the name because of failures?

https://www.glassdoor.com/Overview/Working-at-Crane-AI-EI_IE... ... maybe this is why
I can't speak for plyr as I am not familiar with their project. What I like about indigo is the way modules are structured, the initial file (indigo-player.js) loads the needed code in order to provide playback, it's basically a mono repo. I've spent a fair amount of time on state management too, meaning you have a well defined & standardized API no matter whether you play DASH/HLS or use FreeWheel / Google IMA ads.

Edit: the state interface can be found here: https://github.com/matvp91/indigo-player/blob/master/src/ext...
Creation of the electronic brain
If it helps at all, I do that a lot too, and have started working on extending my vim plugin[1] to also do configuration and run TLC.

Honestly the big blocker here is learning how vimscript better.

[1] https://github.com/hwayne/tla.vim/
Also several things reek of having no experience.

"One former employer of mine, who will remain nameless, would hire two freelancers for every job unbeknown to one another. After a month, he kept the one whose work he liked and let the other one go. Some people have more money than sense."

It makes good business sense to actually not let the other go. End result is that you have 2 independent implementations, and you chose the best one. Every time. You get consistent results, and have no problem with unpredictable delays.

There is a slight overhead, but if quality can strongly impact your results, this method quickly pays for itself.
Microsoft no longer sees Cortana as an Alexa or Google Assistant competitor
Definitely the unborn infants, as well.
Incorrect. Arbitrage is risklessly taking advantage of contemporaneous price differences by buying in one place and selling in another at the same time.
This is truly a fantastic place to start (there is a book of the same name):

https://youtu.be/AnrBQEAM3rE
Not in the last case I was thinking about. But then management were pretty clueless about tech...
Actually it's likely our broken healthcare system and poverty. But they certainly aren't helping.
Well I see the 'gig economy' as large well funded organizations trying to get the benefits of hiring one-man LLCs and non-incorporated DBAs without any of the downsides.

If you want to hold someone to a 'name must match' standard, then I think you hire them personally so they are your employee. For someone using Uber, they theoretically do not care who the driver is so long as it is a 'valid driver' as per marketplace standards. To them, they are doing business only with Uber, not specifically with any individual driver, so any disputes are between Uber and driver or Uber and customer.

If something goes wrong, as you said it's between Uber and whomever they signed a contract with regardless of whom is driving the car at the time but that isn't a higher standard than any other B2B contract.

Personally, I would not mind laws put in place saying that if you want to higher 1 person for 1 job, and the name must match, then you have to classify them as at least a part-time employee.
Most people outside of management are absolutely incapable of seeing it

Isn’t it the opposite - that management/officers are oblivious to their own toxic behaviour that led to the rank-and-file distrusting them?
I deleted my 118k-follower, verified Instagram account
I live a block away from a “nice” Walmart in a nice part of town. We shopped at other more expensive grocery stores because we didn’t like the atmosphere at Walmart, it was big and overwhelming and dirty.

Walmart has online pickup now. You order your groceries using their app, schedule a time, and pull up to get your groceries. It’s amazing. My wife and I order all our groceries this way. Since the minimum order price is $30, we’re wasting far less food and placing more orders. Before we’d go to Costco every two weeks, buy a bunch of perishables that would then go bad before we ate them.

It has saved us money and we love it. If there’s a problem we can immediately go back to the store and get a replacement or a refund.

Amazon needs to compete with THAT, and the customer service for when there’s an error, if they want to “crush” brick and mortar stores. Frankly, I don’t see what value they’d add compared to this.
Show HN: Hacker News 2018, Year in Review
Probably the same thing that caused it to be worth $9 billion. Holmes was incredibly convincing and had real contracts with huge companies.
Do you have a source of infants dying from vaccine preventable diseases? I was under the impression that some vaccines aren't even administered to infants and the diseases become a problem a little later in life.
Show HN: Minos Hypervisor support virtual RTC device
Yet people continue to argue how communism doesn't work. Cuba is about as well off as essentially any other Latin American country even given it's long time history of sanctions placed against it. Yet it has a rather high human development index, life expectancy, ect.
Very generous compared to what? Don’t most other wealthy nations also offer this kind of care, along with continued free at point of service care for life?
Sooo this is either a screenshot of Sanixer's machine or of someone who has access to his entire trove. Clearly not the author's.

I see the mega.nz handle "Louren KINGUR" with avatar, and the same person's Google account avatar with no username. I did an image search on this latter one and came up empty handed, but maybe someone with more finesse could find him this way.
I use Bitwarden, password autogen, and 2FA to manage those too, though I'm not fully migrated over yet (still have a lot of weak duplicate passwords). My problem is the older services I have to use that don't support 2FA.
Surely a company as rich and powerful as amazon has it's say in local government, no?
Privacy Campaigner Schrems Slaps Amazon, Apple, Netflix, Others with GDPR
If Amazon can deliver food for cheaper than ALDI it will take off. Delivery is great in cities where driving and parking to shop are a pain.
They don’t have the first mover advantage though. Walmart has rolled out their Pickup app for groceries and it’s super easy to use. My wife and I haven’t set foot in a grocery store in months.
A CEO might host a 2K dinner per day. Give 1K people 2$ and they will be able to buy a McBurger.

In case A) you have a chef,sous chef, sommolier etc. all making reasonable money.

In case B) you have capital investor making 1.95$/ unit and some kid making 7.95/hr.

In aggregate, who spends what does not have a clearly predictable path through the economy.
Math and Science Can't Take Priority Over History and Civics
My local Tesco (I apologise for all the Tesco references; they seem to have totally taken over my area of Dublin) is a small urban supermarket with eight automated checkouts, and typically one employee on a manual checkout for people who want to buy alcohol and cigarettes, or who refuse to deal with the machines. At peak times maybe two or three employees, but one is normal. Big suburban supermarkets have a bunch of automatic checkouts, plus scanners for shoppers to take with them and self-checkout as they put their purchases in the trolley. Amazon Go type shops may be _slightly_ more labour efficient (if they work) but there's no reason the big chains can't just do that, too.

Weirdly, when I was in San Francisco recently, I went to a Whole Foods (an Amazon owned supermarket). It didn't have automated checkouts at all! I'm unconvinced that Amazon is actually a leader in automated supermarkets.

RE the large real estate footprint, that's usually leased (at least here). As demand for physical supermarkets drops, they can just stop renewing leases.
Generous compared to what the author is suggesting - pregnant women being left out in the cold.
Hey guys! We've been working on an idea of data stories here at Chartly and created this Hacker News story based on data from the community in 2018.

It is not perfect, but was fun to create and I am happy with how it turned out.

Would love to hear any feedback you have!
Crapularity Aesthetics
Did they solve peace? AFAIK there have been wars since, and having grown up with these people I know first hand they’re anything but peaceful.
respectfully, that's a little bit ridiculous. MtG is neither the first nor only TCG to sell randomized booster packs, and it has been around for a quarter-century. i don't see any connections between the two besides those that are generically inherent to microeconomies.
I flew to Nepal a few months after the earthquake. It was my first real travel trip anywhere and also by myself. I have to say that it was the best decision I ever made to follow through with my gut feeling and simply go.

The spirit of the Nepali people is incredibly strong. And when hiking out in the mountains, you would sometimes forget that that the earthquake had struck at all.

At the time there was a lot of political unrest happening at the Indian border too, and that made everything that much more interesting.

By the time I was leaving, most foreigner restaurants were cooking food outside on a wooden fire, seeing as how getting gas into the country was impossible.

So many incredible memories from that trip.... NatGeo should give me a platform! Haha
The original title was ‘is the age of tech over?’. It seemed too much even to the editors.
Infants are definitely more likely to die in the USA than in any almost any other OECD country (the exceptions being Chile, Turkey, and Mexico).

https://data.oecd.org/healthstat/infant-mortality-rates.htm
There is generally written testing involved, along with a multi-person board/interview that is a direct knowledge test under that inherent stress of face to face.
Using an open-source ELK stack for AWS Lambda log monitoring