skysight-inc/HackerNews huggingface dataset:
I don't understand startup valuations well, so would appreciate someone more knowledgeable throwing some light on how these valuations are made. Would I be in the ballpark in assuming that they have a Sales ARR of $125M. At a sales multiple of 8x (for SaaS cos) makes them worth $1B.

The $125M is around 12 large customers with contracts of $10M each, which buys them services of 2500 labeling contractors for 2000 hrs/year at $2/hr ($4K/yr).

At some point they will stop being a services company which carry a low multiple and switch to automated labeling without contractors (ala self driving cars) or develop some unique IP that they sell as a service?
What I still do not understand is why people continue to turn a blind eye to this instead of switching to SmartOS. I just don't get it.
As crazy as it sounds, can that fast device be a ramdisk?
Brit living in Germany here. I just bought a new home, and it came with Fiber to the Home. Great I thought! Then I tried to get connected...

I have zero choice of ISP: I had to first go to a small company who maintain my line, who then pointed me at another company for the contract.

Though rated at 1gbit, I can only get max 500mbit from my ISP, and then that costs a whooping 90 EUR a month, without any phone or TV service.

In the end I took 300mbit at just under 70 EUR a month. Happy enough here, Netflix is great in HDR, but the costs and choice are ridiculous even when you have full fiber in Germany...
If I have to choose between mass nuclear to replace fossil fuels or the alternative of global warming .... I choose global warming.
In a sense, most other aerial vehicle types are worse. Helicopters, with only one main rotor are incredibly complex machines requiring constant maintenance. The rotor blades are articulated to provide flight control. Quadcopters are a ton simpler because their rotors are "just" rotors, and flight control is achieved through differential thrust, not angling the blades. On the other hand, helicopters often seem to deal with engine failure better than quadcopters or even fixed wing aircraft.

Fixed wing drones have the big problem that they need to go fast to stay in the air. Which requires a lot more motion planning.
I'm reading all the threads here and wonder: is there a similar type of game that is safe for kids to use? I'd love to have the collaborating with other kids to build things, but I'm deeply concerned about the predatory aspects other parents are describing here. Is there an open source version of Roblox or Minecraft that you can run on your own server and only invite known people (neighbors, friends, etc.) to play on it?
Finding the Truth and Power in Data
Often the school is within biking distance of where you live, or they can take the bus - contrary to what many Americans think, even 6 year olds are capable of doing this alone, and they will not be kidnapped.

Commuting to work usually involves getting on the bus/subway only a short walk away. It's more stress free than sitting in traffic.
> I switched my work hours to take the metro way off-peak (between 6 and 7)

Yeah, I did the same, and sometimes I feel this is the second most productive time of the day.
> Meanwhile other EU countries gave you 1Gbps for ~10€/month. Germany is definitely at the lower end of internet infrastructure.

This sounds like eastern europe pricing, western tends to be quite a bit higher. We're talking 20+ for DSL or "slow" fiber (100M or so), GB you won't get below 30+ or even 40~50 depending on the country.
while its not open source you can definitely run minecraft on your own server with a whitelist. I dont know about roblox.

You might also be interested in minetest?
I was in a similiar situation where I have the same name, spelling and all as a very famous person in my country. So this person had the .com domain and I waited 7 years for it to be dropped and eventually the person switched to our country's domain instead.
Explaining the discrepancy in galaxy rotational curves, without dark matter
London’s public transport consists of trains and buses, not just the tube. And there are several air-conditioned ‘metro’ lines, all the sub-surface lines. The others are hot and horrible, I agree, but the public transport network in London is second to none. It also includes bicycles if you want the wind in your hair.
Don't forget the best of them all
India - UPI (2016) https://www.npci.org.in/product-overview/upi-product-overvie...
This is exactly right. So much of the discussion here is because people can't turn their own arguments against themselves. The sentiment is, "clearly this is bad and needs to go away." This is also an extension of surveillance arguments where people say "i have nothing to hide." They forget to take into consideration the power that has been given to a group that could become immoral in the future and use that power against them.
I really wish we could agree that freedom is a burden and we can and should shoulder that burden because it is worth it. Let's all take some responsibility for not doing enough to convince extremists away from their beliefs. Let's accept that censorship represents a failure of imagination in combating the issue responsibly (whatever that might be).
⌘-] and ⌘-[ to navigate between items like conversations in messages or Slack. Seem to be a fairly de facto shortcuts.
Are you talking about shuttling your kids to school? I know in Japan most kids 6y+ just take themselves on public transport or walking.

How is it done in other countries?
It's an interesting point, but I would like to correct one thing: when people in Paris don't buy cars, in most cases it's not because they don't have the means but because it's highly impractical to drive one.

Besides, the French may have lower disposable income, but they have much longer holidays and work way fewer hours on average.
I very well might! Send me a note at ntilmans at anagenios.com, lets have coffee or something!
Programming Languages to Learn in 2019 (For Job and Future)
The problem with these is that my machine runs noticeably hotter while the cover is on (I presume part of the cooling happens through the keyboard). It's not a very pleasant typing experience when I have to touch this hot cover.
I don’t think karabiner elements supports that and I believe that the old karabiner no longer works with current versions of Mac OS
Medicinal CBD can get you arrested in places. While long ago, alcohol was also prohibited. Also, forbidding drugs was used to oppress African-Americans. None of these things seem to me good.

And we are already coming to a more censored internet. Sex work was forbidden with FOSTA. Many mainstream conservative opinions are censored. Opinions which Obama had when president are now considered hate speech and censored. There is more and more censorship.
Roblox, Fortnite, Minecraft are the new social networks right? Well when I was 15 and we used to play Counter Strike and Quake 3 the "social network" was hanging out on servers with maps just chatting and walking around the map aimlessly or just hanging out on IRC.
So I can totally relate to how kids nowadays are going back to this sorta hangout. Text only can be boring (kinda like IRC for many people who couldn't tolerate it) but hanging out in servers, spinning around and doing stuff actively (albeit not productively for society) is actually much more fun. Now couple this with discord and all the in-game voice chat stuff + emotes and the ability to build anything. Yeah I can totally see why young kids wanna hang out in video games all day!
If an when things head south, it can get much worse than that.

In 1987 on Black Monday the DOW fell more than 20% in a single day:

https://en.wikipedia.org/wiki/Black_Monday_(1987)
Windows will not BSOD due to memory pressure.
> have to use several Electron-based programs

Have you thought about running browser-based versions? I tend to find that these behave a lot better.
The message seems overly apologetic, unnecessarily long and non-technical. Almost makes you curious to see what the danger really is...
This European spent a couple of carless months in Pittsburgh and found the public transit pretty decent. Only ride-hailed a handful of times. I do realize that Pittsburgh is probably not a median US city, but serves to remind us in the old world that there's a huge variety of different sorts of places in the US.
Oh wow. That's a really good one. Never thought about shift taps.
That sounds terrible. Companies should not have to pay millions of dollars per year to keep their domain safe.

If a website-needing company pays based on how badly it would hurt them to lose that site, it would destroy their margins. If they pay a more reasonable amount, or if they're just a smaller company, they're vulnerable to competitors kicking them offline at a whim.

Land is pretty much the only area where taxing a significant percentage of value makes sense, and even then it's frustrating and awful to do it with a buyout system.
Or the plants grow faster and contain exactly the same "nutrients" "diluted" in more starch. (The scare quotes are there because large parts of the world need those so-called empty calories even more than the vitamins.) The article talks about concentrations, not total amounts, after all.
Drevo Gramr 84 - it's a 75% keyboard - very compact yet have all keys necessary. It's really cheap on aliexpress but worth every penny (I've got 2, both works flawlessly since ~2014). The only downside can be the fact that if you would like to customize it, you would need 3 or 4 special keys (right alt, fn, ctrl, shift) since they're in the same size as regular keyboard/letter keys.
>Worrying about them today makes about as much sense as worrying about Autria in 1930 because Austrohungaria used to be a world power.

And nothing bad came out of Austria in the 1930s.
I mean the obvious answer is Robocop / I, Robot. High frame rate cameras with deep learning algorithms trained from mass shooting footage that control sniper rifles on pan tilt zoom mounts. Someone starts doing something bad, BAM catches a .308 Winchester in their dome.
Can’t be that bad in SF. I first lived in SV then in Greater NY Area, but not in the cities. In either case there’s like one or two small grocery stores within walking distance, I can’t even do proper shopping without a car, unless I’m willing to bike for forty minutes or more in the two-feet-wide bike lanes (sometimes nonexistent) without any separation from motor traffic. (And in the latter area, should I choose to bike, I would be the only cyclist in miles.)
> 45 minutes of reading on a commuter train with a comfortable seat

I've never seen that train. The ones I am in - when I am in them, I avoid them as much as I can - are crowded and reading is definitely not going to happen, standing is more common than sitting.
I thinks it’s the latter.

If there is a major news item involving regular expressions, we’re all ready to pounce, ala: https://xkcd.com/208/
Yes, but ideally you want to be throwing some ‘memory pressure’ signals before absolutely running out of memory, so that programs can take simple actions like emptying caches, etc.

Catching an otherwise-fatal out-of-memory fault and recovering would be too complicated / bug-prone.
It's an opportunity to find more people like Ötzi the iceman. Move quickly.

https://en.wikipedia.org/wiki/%C3%96tzi
From briefly checking out some of Pewdiepie's stuff, it seems they've added quite a bit since I was last paying attention to it years back.
Slow? Yes. Expensive? No.

I recently moved to Germany and now have 100mbit DSL for 25€/month (~$30) plus a phone contract with 6GB/month (more than enough since I have Wifi at home and work) including a phone flat for <€20/month. That's on par with the UK and cheaper than US and Canada.
Symbolic moving, and possible stepping stone to other actions. Technicalities don't matter.
Kind of.

As a lucky one to live in one of those future cities, yes it is cool to move around.

However living on the suburbs or not being lucky to live in a few selected cities per country and it is back to choosing between 1h - 2h of commute time due to multiple exchanges and schedule times, or do the same way in about 30m.

Good that we are making progress, but not every city is Amsterdam, Berlin, Rome, Antwerp... nor everyone happens to live in the city center.
Delivery drones are definitely unnecessary in densely populated areas. It's cool and futuristic, but it's not economical at all, it's very unsafe and also loud.
However it's a wonderful thing for rural places with poor infrastructure. For example Zipline in Rwanda, one of the most interesting solutions an engineering perspective too: https://youtube.com/watch?v=jEbRVNxL44c
Considering my MBP already gets quite hot this is a very valid concern.
We had an incentive programme consulting company for several years. Trust me, most people, including financial professionals, had a very hard time understanding even the most basic options programmes.
Using the computer as a tool for thinking in discrete mathematics (2017)
I'm from Germany and it's very frustrating. I'm already using the provider with the best network here (Deutsche Telekom). Having a fast connection outside of cities is still the exception.

It's so bad that I can't even call many times during my daily commute.
They totally come with Picatinny rails...
Ha! It's enough to be 30 km away from Munich, and somewhere between the villages you might have no internet or edge only. It's disappointing.
> vast amounts of memory for each tab

What underlies this? I am astounded to see 1GB of memory returned when I close a couple of tabs.

Chrome and Firefox both seem like this.
I was wondering how people who live in cities in carless mode manage when they have kids. Since I could not find by simply skimming the comments, I searched for "kids" keyword, but so far it only appears twice in 200+ comments. Do people move out of cities immediately when they have kids or they have no opinion about this topic?
FreeBSD is probably better than Linux at this, but that doesn't necessarily mean it's good.

Prior to FreeBSD 10, I'm paraphrasing but essentially it would pretty much not swap anonymous pages until memory pressure got really high -- it would evict clean disk pages and try to clean dirty disk pages first. But if the pressure continued, it would start marking anonymous pages and eventually swap those out too. A big problem was there was a massive slowdown when it hit the threshold; tons of pages would be marked as inactive, so using them in the process triggers a page fault (and they then get marked active), and all the page faults and page table activity slows things way down.

In FreeBSD 10, a patch from NetApp changed the page scanning behavior so it was always running. This is good, because you don't get that massive slowdown while the pages are determined to be active or inactive; instead the kernel always has a much better idea of which pages are used; but it's also not great because some of the inactive anonymous pages are going to get paged out, and it also makes memory accounting trickier. In FreeBSD 9, you could look at the active memory stat on a system that wasn't at the brink and figure that was pretty much the amount of ram you needed -- so if it was growing over time, you might have a memory leak, or real growth. In FreeBSD 10, it's harder, because your programs may need things loaded but not access them for some time, and the pages could get marked inactive, so you really have to guess; and swap usage isn't a great metric either because those idle pages might get swapped out. You can set the vm.defer_swapspace_pageouts sysctl to get something similar to old swap behavior, but you still lost the memory usage gauge.

OOM behavior seems better, but also not necessarily great. Most of my experience is from running Erlang servers with very little other stuff going on, so it might not apply to a more conventional server with lots of random things, and probably not to a desktop either. Overcommit is disabled by default (and i think it may be substantially different than Linux overcommit anyway), and mostly what happens in my experience is the big allocator (beam.smp for us) gets its allocations failed when you run out of swap and then it crashes and everything is in an ok state. Every once in a while, something else will get failed allocates and die before the big allocator, but then the big allocator still dies; this wasn't great because sometimes it would be an important but small daemon like ntpd, when this happened we'd often reboot to get back to a known good state. There's also an OOM killer that can be triggered depending on exactly how things go down -- it just kills the biggest process; for us, that's the right thing, if the VM is eating all the ram, killing off gettys isn't going to do any good.

However --- we saw several times that the kernel would just hang. Unfortunately, when we were seeing this often, I hadn't figured out the kernel debugger, and it was usually in the middle of an incident anyway, so we'd reboot and go on with life. A hung kernel is better than a thrashing kernel, but only a little bit.
That's a great explanation. It makes more sense to me now.
Robots are absolutely useful, and major companies are building out massive robotics facilities to accelerate drug development. The point is that it's not a magic solution. It still takes a bunch of staff to run, and (much less appreciated) it takes a different mindset to be maximally useful.

For example, maybe instead of doing a dozen informative but slightly complex assays, you do 1000 less useful but less complex assays. The end result might be just as useful if not more, but you have to structure your experiment differently.

It's unlikely that technology will play out the same way in biotech as it has in pure tech. I'm heavily invested in the idea that it will be immensely useful, but given the different constraints and problem space I think the trajectory will be different.
+ VSCode: CMD + b toggles the sidebar (whichever is open)
How telling that you lambast one of the very few agencies actually doing something about the problem (for something completely out of their control nonetheless), instead of thank them for the aid they gave you.

"If you nurture a starving dog and make him prosperous, he won't bite you. This is the principal difference between a dog and a man" - Mark Twain
Regarding the specific definition of M1, you'll have to research. I'm not a banker or an economist, I'm just remembering a macro econ course from 10 years ago. It's entirely possible that the US Federal Reserve Bank has a different definition of M1 than the People's Bank of China.

Money has always been fungible, even nonfiat money. The second you have lenders in society and allow them to back loans using deposits, they effectively create money. The ratio of loans to deposits is called the cash reserve ratio, and it's pretty heavily regulated.

As for the trust question, the answer is in your question. Swift and other interbank settlement systems are independent (or co-owner) organizations that require a massive security deposit to explicitly handle the situation where a bank says "transfer 1000 to A with account with us from account B in your bank" where the transfer wasn't backed or authorized or anything like that. It's important to note that there are both pull and push systems. ACH is an example of a system that can pull. All of this is because banks don't trust each other especially if they aren't beholden to the same regulatory authority.
“How do people do XYZ without cars” seems like a trivial question to those who live without cars.
I previously made the observation that global warming induced nutrient density loss correlates with the mammal obesity trend: https://news.ycombinator.com/item?id=18949373

Everyone here commenting about the great news about how yields have increased is totally wrong. Droughts, prolonged heat waves, and flooding will wipe out whatever small percentage in yields from higher atmospheric CO2 have/will result. Not to mention the health effects: people that are paradoxically at the same time obese and malnourished.
> do you have any idea what part(s) are failing so quickly? The rotors, the motors, the battery?

It doesn't really matter what fails, what matters is that there is no way to do a controlled descent once anything goes wrong on a loaded drone because there is no margin for error. A drone this heavy relies on the whole chain of components functioning perfectly.

I'm surprised it is as good as it is given the number of parts. If it were a winged drone you'd at least have a chance to glide it to a safe spot, but a drone that is kept up by spinning props can only crash uncontrolled. There was a video of downing one in a more controlled way but the only fault it could cover was single rotor failure and even then the amount of control was very limited.

These things have absolutely no business over areas occupied by people.
located in Berlin, I have only fiber and the only ISP is Deutsche Telekom, offering a 50Mbps connection for 40€/month.

The 500Mbps is at 99€/month
This perspective is invalid in large parts of the world. The most important macro nutrients are sugar and fat, the very thing americans (and only americans) call "empty calories". In most places, more calories is good. Meeting the requirement of about 2000-2500 kcal/d is frequently more difficult than providing a few dozen grams of protein and a few mg of various micronutrients per day.

Only the US (and its sphere of influence) has the opposite problem, because people there insist on drinking fizzy sugar water. It's not even that the maize the sugar is made from is low in micronutrients, it's that those aren't used to manufacture HFCS.
Your typical helicopter is made to entirely different standards than your typical drone.
Paris subway outside the city center lines isn't necessarily pleasant.
OK, so we're effectively (to my mind) looking at something like git with signing on every commit, and an image file being its own self-contained repo, so you can [;ay back through the versions to the 'root' that comes from a camera.

Presumably this format is going to be of interest to journalists and courts, at the very least, though courts are most likely going to be most interested in the simplest case - the provable original.

Interesting idea :)
I think it's more likely they registered it in the hope that it's valuable in general. Not that the previous owner had made a mistake.
Lings Cars: One of the UKs biggest car sellers.  Seriously.
I have a box with USB B, miniusb, microusb and usb-c cables. I doubt these can be recycled to any acceptable degree. This "just buy the latest cable" is actively harmful.
At least in part, the author seems to conflate 'collecting images of pax' with 'their usage of the IFE':

> Cathay confirmed it is collecting images of passengers while they're on board, monitoring their usage of the in-flight entertainment system (IFE) and how they spend time during the flight.

However, it sounds like Cathay are just using fixed cameras and not ones built into individual IFE screens:

> The airline said these images are captured via CCTV cameras fixed around the airplane and not from embedded seat-back cameras.

> Cathay's spokesperson said similar devices were not installed in its IFEs. "Our inflight entertainment systems do not have any cameras, microphones or sensors to monitor passengers, nor have they in the past."
Related threads from 2016:

https://news.ycombinator.com/item?id=12041639

https://news.ycombinator.com/item?id=13040313

I feel like there was a discussion about this quite recently, too, but can't find it.
Another complexity is ensuring there aren't superfluous votes. Everyone can verify their own, but what if there were several million "hacked" extra votes.