skysight-inc/HackerNews huggingface dataset:
The source laser was 1540 nm, the sensing laser was 1550 nm.[1]

> For the LUS system reported here, the 1550 nm LDV was specifically selected to maximize permissible optical backscatter from the skin while maintaining safety.

> Thus, the 1540 nm optical source was selected to maximize the converted acoustic source amplitude while remaining within the safety limits.

They wanted lasers close in the range of 1500 nm, but just over that wavelength has better safety limits. I am pretty certain those lasers were just chosen because that was what was commercially available in the narrow range of frequencies they wanted. The source laser is a Q-switching laser[2], which is needed to produce those pulses.

It doesn't particularly matter what wavelength they used (~2000 nm also would have worked); the doppler (aka self-mixing[3]) technique they used is very highly tolerant to noise.

[1]: https://www.nature.com/articles/s41377-019-0229-8

[2]: https://en.wikipedia.org/wiki/Q-switching

[3]: https://en.wikipedia.org/wiki/Self-mixing_laser_interferomet...
It of course depends on the demand, but very low in general. During periods where I don't have a lot of player activity even a single vCPU is enough to host about 2.000 simultaneous players.
> partially because LSD was deemed to have too large a stigma attached to it from years of negative media exposure

Partially, but the main reason is that it’s too expensive to run studies where you need to pay people overtime to be there for 16 hour days.
ah, you’re correct!
There are methods to force a decision through, even with large/uninteresting groups. For example, putting a default course of action on the table up front and asking if there are objections or better alternatives.
Another example is highlighting the cost of not making a decision via organizational communication (“X is still blocked on a decision” etc, and repeat that weekly).
That's not what three former Booking.com folks I know have said. There's a striking unanimity to their descriptions: risk-heavy day-to-day work ("experiments" not being nearly as firewalled as you might hope), a consistent level of incuriosity amongst line developers and their leadership (which, not gonna lie, "new stuff will be in Java in TYOOL 2020" does a lot to buttress), and rotgut technical-debt Perl that will never be rehabilitated (ditto). Also an HR department that plays real hardball if you're not an EU citizen.

(I used to work in the travel space, at TripAdvisor, but that was about eight years ago; no other affiliations.)
I once saw a trailer for AoS, but to be honest I don't really play many games myself these days. I find that working on Angeldust is in itself a reward that alleviates the need to play games as escapism or entertainment.
Should be noted, that by default on OpenBSD, an RWX page is impossible, mprotect() will fail and the process will get killed trying.
> At what point do we get so deep into templates that we just admit that anything short of a programming language just isn’t expressive enough for a config file?

At the point where I'm debugging configuration instead of declaring it.

There is no sweeping answer, because the scope of configuration varies according to the tool. Systems like Kubernetes or Concourse accept records rather than configuration per se. At least conceptually, these are projections of an underlying model. They are not the model itself and won't be the most compact representation.

Because they are projections, they will inevitably fail to fulfill some degree of schematic normalisation. This means repetition, which for most engineers is interpreted as "I need a loop" instead of "I need a set notation".

I prefer ytt to most alternatives I've seen because it's at least trying to avoid introducing unwanted Turing completeness. Where possible, your configuration language shouldn't be an attack vector.

I'd prefer a more relational or logical style of configuration (I expect CUE folks will be here shortly), but given the continuing efforts to disguise and hide even SQL from programmers, I'm not going to hold my breath.
Code Complete would be a great gift. This is the book I read when I first got out of college and it has had a very important influence on my coding style and thinking.
But you will never learn how to use the most important features of iPad OS without knowing the split screen gestures.
nothing helps if you make simple logic errors.
Hmm yes interesting. Thanks for pointing that out!

The other patch authors could retroactively agree with the robber that their derived publications have been without license. Then they too could block usage of Nginx by pledging to go after anybody who gets a license from the robber.
PDF of the novel: https://www.planetebook.com/free-ebooks/1984.pdf

Epub, Mobi: https://www.planetebook.com/1984/

Audiobook: https://archive.org/details/George-Orwell-1984-Audio-book
This HN post is kind of the first attempt at getting the game out to "the public" aside from passively being present on app stores like Steam, Itch and Google Play.
> Yes, it's a security problem when they can do something without your permission. (So I'd argue it's less a leak and more a disclosure when they do have your permission, as is the case here).

Well, but do they actually have your permission?

> If it was done secretly then it would be a security problem, but without secrecy or lying, it's simply Google not living up to your privacy preferences.

Well, for one, are they not doing their things secretly? Is the mere fact that you can find out about it enough to call it "not secret"? Is the mere fact that you didn't refuse where you didn't even really have an option to refuse permission?

Let's suppose a food manufacturer put a new pudding on the market. Included with the package is a 500-page explanation of everything that you need to know about it. Somewhere on those 500 pages, all ingredients are listed. Most are mentioned using the most unusual names. Among the ingredients is a strong carcinogen. A carcinogen that doesn't contribute anything to the taste, the look, or anything else you would value. All it does is make producing the pudding cheaper to produce.

Now, a biochemist could obviously know what is going on if they were to read the 500 pages, so it's not secret that the carcinogen is in the pudding. Also, the packaging says that you agree to the conditions of use in the 500 pages if you open the package, so you gave them permission to feed you that carcinogen.

Would you agree, then, that this pudding is not a health safety risk, it's simply the manufacturer not living up to your health preferences?

Also, I don't really understand how permission can make something not a security problem. It seems like that's all backwards?! I generally would first check a product for security problems, and then give permission based on the presence or absence of security problems. And one of the security risks to check for would be software leaking information to whereever I don't want information to leak to. Why should the fact that the manufacturer of some piece of software announces or doesn't announce that they leak certain information have any relevance to whether I condier the leak a security problem? If I don't want my information in the hands of Google, then how am I any more secure against that leak just because Google told me about it?
Four people saw it with their eyes. David Fravor has talked the most but there were two planes, each with two pilots.
There are many things that are missing that are obvious, such as being able to organize the icons on your Home screen as you wish like you can do in Android,

This is bad on a mobile operating system. I had the displeasure of trying a device running Android's default UIs a few weeks ago: it felt like a Fisher-Price toy. Apple's model of organization is better in every way.
It's almost like language choice doesn't matter at all...
Humans are still beating AIs at drone racing, for now mybe
Huawei can’t explain how it is regulated? It is a basic question about its interaction with the government.
A recent cryptography challenge in a CTF featured the New Data Seal (NDS) cipher, which is the cipher that first inspired the slide attack. NDS has a very weak round function which is iterated 16 times. The 2048-bit key is used as a lookup table, not unlike the S-Box key in the Sarah2 cipher here.

Despite the large key size and the reasonable block size of 128 bits, a slide attack can defeat it in less than 4096 plaintext-ciphertext pairs, demonstrating the devastating effectiveness of this approach. Every block cipher since has featured some kind of per-round keying or variance to ward off this attack.
I've heard tales of the wink and a nod method of releasing capabilities without broadcasting that's what they were doing. Back in the early days of satellite with ground penetrating radar, there were detailed images released of river deltas. It was supposed to be a boon for geology, but it was also meant as a shot across the bow to the Russians that we could see their underground bunkers and what not. Sometimes the clandestine games were cool. I miss the spy novels/stories of the 80s.
No, of course not. But I myself honestly appreciate a well-crafted product way more than a badly crafted one. So I think we can at least say that:

Fast+efficient+"some fun" > Slow+inefficient+"some fun"
Surely there is an “out” for JITs that have not yet adopted W^X?
The consequences of sharing data do not appear immediately. Delayed effects of things are never going to be simple to deal with. People always have been and always will be hard-wired to keep on doing things if they aren't immediately struck down.
Pretty much the definition of lobbying...
I think it might protect against JIT shellcode.
There was an article that ran a few months back here about how most of those teaser numbered were backed by a rand() function
Honestly I would feel more comfortable managing my mothers online dating accounts until the day she dies(not that she has any that I know of anyway) than attending yet another christmas dinner. And I don't have any problems with seeing my family, it's just christmas is such an awkward time all around - to me at least.
Nope. On Google Play I'm limited to a 50 MiB APK size so I can only ship assets for the "Cartoon" visual style. As you don't get the full experience of having both the "Cartoon" and "3D" visual styles available I find that not charging for the product is good option.

Also: my preconception was that Android users are more likely to pirate a product. So to prevent them from downloading a malware-laden pirate APK and getting a poor experience, I'd rather have them play the game for free without hassle and tarnishing my reputation.
The claim that k/q isn't scalable is false for anyone curious: k/q is incredibly scalable. That's a selling point of it.
> If they had two lasers of similar frequencies they would get interference beats/aliases in the data.

1. They did use different frequencies- 1540 nm and 1550 nm.

2. The measuring was done with doppler interferometry, so beats would not impact measurements. The sensor is only responding to the difference between two signals, not the intensity.

3. 10 nm wavelength shift is a much larger difference than anything they'd be measuring, so the only thing that would actually even "show up" (as noise) would be light at the same wavelength as the measuring laser. Any constant noise at the same wavelength as the measuring laser will be filtered out. Only slight frequency deviations would come through- like the kind from vibrations shaking the laser.
Inertia seems a good metaphor too, although that too lacks a bit of the specificity you're getting at.
Er, there aren't many performance critical multithreaded environments? Latency sensitive systems disagree, and those are all over the place.
I know this is HN and not Reddit. But this made me lol.
An opt in actually, to request looser checks.
Some people have the ability to synthesise and evaluate particular ideas faster than average.
OMG! Thanks!
Honestly, thanks for the feedback. I never realized / got feedback that players would indeed use a password manager for a game like mine. "It's just a game!" is not the best defense here and the workflow of getting an external password into the game afterwards is also pretty subpar. I'll need to think on this for a good solution.
To a degree this comes down to how you capture an image of their skin. Lighting has a big impact on how the result looks as does the medium you use to capture the image.

In the early days of color photography there was an issue with some films and reference images being tuned for the most common subject (light-skinned humans) and as a result if you tried to capture a mix of races you'd get bad results: https://petapixel.com/2015/09/19/heres-a-look-at-how-color-f... This makes sense if you consider how light is (generalizing here) a broad spectrum of hues and a given material is most reflective for specific parts of the spectrum, so if you don't capture much there you'll get a low-contrast image, like stripping the R channel out of an RGB bitmap.

It's of course possible to solve the problem for a wider set of skin tones, and it has been solved, but it takes more work. It's a subject of ongoing discussion/experimentation in film to this day: https://www.konbini.com/en/cinema/insecure-cinematographer-h...
I would love to have an open source self hostable version of Google Docs.
I have been meaning to write an article on my first experiences with Rust and embedded development, coming from a JavaScript/TypeScript background or my experiences in switching from Windows to Arch or Vim as of late, but I feel somewhat discouraged from writing, as if it might lack quality. Do you have any tips on overcoming this feeling?

It's a shame, because I see a lot of value in writing down one's thoughts, e.g. more easily noticing gaps in knowledge of a subject.
I know next to nothing about physics, but I do know some about ML.

I think the reasons tensor networks are unexplored is interesting: The tools and techniques for dealing with them build on those for neural networks and the theoretical benefits are not clear cut enough to gain them a foothold over the practical results of neural networks.
Thanks for the kind words! I'm not sure if I can give you a recipe or an answer. I do me like you do you. Everyday I give it my best and eventually you end up with a product like this. Just get started and work on your dreams!
It's not used for private models. Its meant to make sure if someone builds an application based on your models you won't yank that version from under them. If you never expose your model (for profit) you can delete at will and we have no rights.
Click bait or is it brilliant about war game the movie?
Do you have a link ? I've been on the lookout for small hard SAT instances for some time and haven't really found any.
Most remain invisible to customers and externals. However, inside just one company, there are dozens of smaller projects that's fixed security and privacy issues across all the horizontals: front end, ESB, middleware, databases, applications, you name it.

Without GDPR the majority of those hidden improvements would've been postponed indefinately.

I do regard spammy notifications as regressions though.
You can have private organizations certifying things, but then how do you decide which certification to trust? And what's the point, since the certification is going to be tied to the product, not independent?
I tried it for New York City and prefer using OpenStreetMap but don't see subway directions on it. Am I missing something or are subway directions not available in it yet?
the point is that these products would not have shipped at all if their workforces were diverse enough to point out “hey this doesn't work, like at all” or “hey this glaring edge case isn't far enough on the edge to send this to production”
Monopoly is used as a generic term to discuss everything under antitrust and competition law with layman, because people don't know what monopoly power, market power, barriers to entry or exit, restraint of trade, price discrimination, market failures etc. mean.

Everyone knows what pure monopoly is. This creates problems if people take it too literally.
This wouldn’t be a problem if these companies offered an API to access their data. But of course, that wouldn’t be good for a business which ultimately depends on information asymmetry and walled garden lock-in. Personally I’m not a big fan of these business models (see LinkedIn for another example), but I at least understand where they’re coming from. I also understand it’s sometimes out of your hands, i.e. the hotel partners don’t want you to make the data easily available. Similar incentive structures exist in flight booking and geoblocked Netflix content.

FWIW, I’ve been on the other side of this (not in the travel industry), and written scrapers. I never scraped the HTML, though. My strategy was to MITM the mobile app and use the same API. I also made sure to throttle the traffic, if not to be respectful, at least to blend in without setting off alarms...
So if Walmart with all of its resources, supply chain efficiency, and control over suppliers can’t compete against Amazon doesn’t that say more about Amazon’s ability to execute than them using “monopoly power”? If they win because they offer a better experience that means capitalism is winning.
> While these drugs will make healthy people high and overexcited, it will help ADHD patients calm down and focus.

It is my understanding that nootropics like Adderall are widely used outside of the ADHD-diagnosed population for their use in boosting productivity tasks in otherwise-healthy adults (see their popular use by students at colleges), and also for their high.
What's scary about Amazon for me isn't its future takeover of the US market. I'm more worried about it taking over all markets in the civilized world. Europeans are already using Amazon to purchase things online massively and I don't know what the situation is like in Australia but I'd bet a keg of beer that Amazon will have a substantial market share on all continents and in most civilized countries by 2025 if it doesn't already. There's very little one can do to stop this kind of juggernaut enterprise barring some local laws and sanctions. Amazon is also going to change the future of commerce, already has, really.
I don't know if "drug name etymologist" is an official profession or your hobby, but if it's the former I would suggest you seriously reconsider and re-research your conclusion on this term! Just a friendly suggestion :-)
They actually demonstrated the link. LEO goes down to 200-400km altitude. Their prototype was at 400km altitude.

What makes their technology impressive is the ability to work beyond the usual ~20 mile limit without modifying user hardware.

A good article:

"For example, a standard cell phone connected to a terrestrial tower generally has a range limited to around 35 kilometers (21 miles) if the line-of-sight is not interrupted by hills, buildings, or foliage. The phone signal can travel further, but the reception range is artificially limited by the highly accurate time frames of the cell phone protocol.

To get the phone to connect to a satellite flying 500 kilometers (310 miles) overhead, Lynk’s software at the satellite overcomes the built-in time-frame distance limit built into standard phone protocols."
http://www.satmagazine.com/story.php?number=1127710956
> Why wouldn't you just Google it

You shouldn't have to Google for basic functionality such as WiFi toggle button.
I have three and some holder so I can check out books and reference. You may argue why not bigger screen. Seems different. I have two e-ink one. Better to look at but sync is hard even with drop box. You just use iCloud folder.
Same for the UK.
If you're getting those latter two sentences from following his blog, you will understand why I said what I said.

Lynk explicitly envisions the technology expanding beyond just text messages. They mention the speed over the LTE protocol of their satellite service is 180kbps, plenty for email, voice, streaming music, and some web browsing:
http://www.satmagazine.com/story.php?number=1127710956
What is the relevance of "to replicate a similar or competing service"? Reads to me like they don't want you using the output generated fro unDraw, reverse engineering it in order to create a competitor.
How did your meeting go?
Also note that the construction of the above set requires the axiom of choice. And, as we all know, the axiom of choice is equivalent to the continuum hypothesis in ZFC. So that's how it all fits.
I use the new iPad mini along with cubasis 3 as my main DAW for music production and also my main video editor.
Are you looking to start a business? SaaS, consultancy, etc.?
> There's no long-term upper bound on how hot earth can get, and we're modeling uncharted territory: earth has never been as hot as it's going to get, while life has been on earth. So we really don't know how bad it will get.

Paleocene–Eocene Thermal Maximum [0]

The associated period of massive carbon release into the atmosphere has been estimated to have lasted from 20,000 to 50,000 years. The entire warm period lasted for about 200,000 years. Global temperatures increased by 5–8 °C. Paired δ13C, δ11B, and δ18O data suggest that ~12000 Gt of carbon (at least 44000 Gt CO
2e) were released over 50,000 years, averaging 0.24 Gt per year.

Since at least 1997, the Paleocene–Eocene Thermal Maximum has been investigated in geoscience as an analog to understand the effects of global warming and of massive carbon inputs to the ocean and atmosphere, including ocean acidification. Humans today emit about 10 Gt of carbon per year, and will have released a comparable amount in about 1,000 years at that rate.

Take a look also at "Abrupt climate change" article [1]:

Timescales of events described as 'abrupt' may vary dramatically. Changes recorded in the climate of Greenland at the end of the Younger Dryas, as measured by ice-cores, imply a sudden warming of +10 °C (+18 °F) within a timescale of a few years. Other abrupt changes are the +4 °C (+7.2 °F) on Greenland 11,270 years ago or the abrupt +6 °C (11 °F) warming 22,000 years ago on Antarctica.

[0] https://en.wikipedia.org/wiki/Paleocene%E2%80%93Eocene_Therm...
[1] https://en.wikipedia.org/wiki/Abrupt_climate_change
Amazon isn't selling products, really. It's selling last mile logistics. Walmart has historically been great at the rest of the logistics chain but never really invested in last mile.

If nobody else can compete with Amazon, yes, Amazon executed better than anyone else. But they still have monopoly power. Typically a monopoly will have gotten to that position by executing better than everyone else, but that doesn't necessarily mean they should remain in the monopoly position unregulated.
>and meant "hours"

Like a plane?
Just like the original Mac OS became complex as the hardware and software added features, smartphones now are feature-rich computers.

Part of me misses the early gen iPhones because of the simplicity.

I’m not really sure what the solution is, aside from swiping left and searching. Or Alfred on Mac OS, or the search bar in Win 10.
All of it sounds outrageous, but my point was that it's actually just at one discovery distance from what we can do.

We know how to create a magnetic field using electricity. But magnetism only affects certain materials, the ones that can align electrons in some specific way. If the same thing was possible with all kind of matter, maybe finding the way to align its electrons, maybe not, the rest of effects you mention could be just collateral.
If I wanted to do something like this, how would I find the orphans? I honestly don't know any grown-up orphans myself. There's definitely a matchmaking problem for finding certain people. Would I put up an ad on the Internet or in the streets saying, "Hey guys, holiday celebration happening, wanna invite all the orphans out there!" Or? Genuinely curious.