skysight-inc/HackerNews huggingface dataset:
tldr;

In 1962, research for prototypical time crystals revealed when applying a constant voltage across an insulating junction separating two superconducting materials (a Josephson junction) an alternating current with a frequency proportionate to the voltage will flow across the junction. The nature of this frequency being proportional and consistent is said to be crystalline.

In March of 2017, using ytterbium ions and nitrogen vacancy centers in flawed diamonds, the spin direction of atoms were manipulated to oscillate at fractional intervals within a rate of either laser pulses or microwave pulses. The pulsed inputs were operated manually by researchers, to produce the periodic intervals.

END tldr;

And with that, I'd like to complain about a certain type of quackery in millennial science. Specifically regarding the selection of names for principals.

Here we have a certain sort of name selected for a principal, such that it elicits a sensation of WOO or hype. It's this thing, where underwhelming navel gazing seems to get dressed up in glitzy, tacky outfits, because no one would pay attention to it or fund it, if it didn't sound like a jaw-dropping breakthrough.

Time crystals.

So we focused beams of pulsed energy at materials, and noticed some interesting quantum effects of a given duration. We measured the duration of the effect, and then adjusted the timing of the beam pulses accordingly.

Time crystals.

Yeah.
Not entirely clear how you'd use rail infrastructure to go from Addis Ababa to DC, so if you need the aviation infrastructure for intercontinental travel, its cheaper to use the same infrastructure for both. Kinda like the classic problem of "why don't rockets use atmospheric oxygen for the first 5% of their flight" well, its just not worth it.

Another BIG problem is urban people think rails go everywhere and connect everything. An interesting geographic feature to google for is "darien gap" in Panama. Most people refuse to believe there is no road connection between north and south America... We don't even have paved roads crossing Panama in 2019... We're simply not going to have high speed rail between the USA and Cape Horn in our lifetimes due to engineering challenges.

https://en.wikipedia.org/wiki/Darién_Gap

One of those interesting engineer's daydreams is building a rail connection across north and south america. Imagine a really cool bridge across the panama canal.

The problem is there's no market. High speed (human) cargo gets put on the planes because the countries need aviation infrastructure for intercontinental trade anyway. Low speed (metal ore or bulk grain) cargo takes boats which use about half the energy and cost of rail with essentially zero environmental or property tax impact (well, zero compared to rail or road, anyway). So what has to move faster than people but slower than coal... well... nothing, I guess. So no market means no infrastructure.
There is no limit to the money that can be wasted on policing, prosecuting, investigating, etc, anything that has to do with marijuana.

It is amazing that even incredibly educated intelligent people still freak out over something like marijuana all the while turning a blind eye to alcohol consumption and pharmaceutical abuse. Statistics would probably suggest that there are people working for/at NASA that abuse alcohol and prescription medications and escape any scrutiny.
An operating system, MULTICS, was written in PL/1.
Therefore the data support perfectly the statement that "In Catalonia less than 50% of people want independence". Nobody stopped they to freely vote other options.

But this is a trap, a fake discussion, because the independentist people in Catalonia don't own the place.

The spanish constitution grants rights to all citizens in Spain to share the whole territory, use the public spaces and infrastructures in their benefit, enjoy nature and stablish, work and live peacefully in any point of the nation that they would desire and choose, without being bullied by the local sheriff or politician.
Why and How Capitalism Needs to Be Reformed (Parts 1 and 2) – Ray Dalio
This is where documenting the API using OpenAPI / Swagger comes in handy. Then you can use code generation tools.
You don't have to that at all, of course. First of all, nobody really knows how much calcium you really need per day, all those estimates are ballpark estimates at best.

The estimates of 1000mg or more have been pushed for decades by the dairy industry.

You can get calcium from greens like kale etc. eat a bit of brocolli, eat pulses like beans and lentils, use tahini as a sauce, drink fortified plant-milk.

Just eat a well-balanced plant-based diet and you will be absolutely fine. Studies show that plant-based diets don't cause brittle bones at all on the contrary.

You can get all the nutrients that you need, calcium included from a plant-based diet. The only thing you need to supplement is B12, which is produced by bacterias in the dust.

And as everything is so clean, we don't eat a lot of dirt anymore so that its advised to supplement. Animals don't have it too on factory farms, they get injected with it together with the anti-biotics for health reasons.

So might as well take it directly, otherwise calcium is not an issue at all in a plant-based diet and this can and it has been easily shown.

Edit: Check this YouTube playlist on bone health for more info - https://www.youtube.com/playlist?list=PL5TLzNi5fYd_ACcY8TDQC...
Thanks, Tom. Good point!
That's why most guidelines for commit messages prescribe a short description and an optional long description. The message in the article does not have a short description, which would have been easy to include. For that reason, it's not "My favorite Git commit message" either.
The Audio Revolution
> If we use assumptions about UEOS/UEIS to figure out what telescopes show, and use that as evidence for UEOS/UEIS, that's a circular argument.

Exactly, and that is what my comment to Swebs was intended to forestall (I have already made this point, several posts back.) That comment, being a reply to Swebs, must be read in that context (obviously, as you had not even joined the thread yet), and in that post, Swebs was making an argument that UEOS/UEIS has already been settled by observation. In other words, the resolution of UEOS/UEIS was, in fact, the conclusion that Swebs was claiming to have observational proof of. Using a pre-existing resolution of UEOS/UEIS to deduce what observations might be made elsewhere simply didn't enter into the discussion, as in that case, the issue being debated would have already been resolved.

> Because measurements are not assumptions.

I don't have measurements, Swebs didn't have measurements (though he thought he did), and it has become clear that you don't have measurements either. Maybe someone does, but they have not yet shown up in this discussion.
Please avoid using code blocks for quotation. It creates side-scrolling windows. Just a sideways carrot > or italics is sufficient.
We evolved to do it recently, but lactose tolerance genes have been heavily selected for by evolution. It's one of the most heavily selected-for traits in the past ten thousand years.
As someone who works in graph visualization, this looks like just another case of a default hairball visualization (those often arise when combining force-directed layout with dense graphs): beautiful pictures (in the sense of nice to hang it on the wall), but rather useless as a visualization.

Looking at the various hairballs it would be more helpful to render simple HTML lists ordered by some graph analysis algorithm results (centralities, etc.) What you “see” in these diagrams is mostly a listing of nodes sorted by degree (and you can't even tell the exact degree). Also, nearness often indicates relationships that simply aren't there.

It might be better to find a set of use-cases that describe how users of the app find answers to real-world questions they have, and then add interaction to the diagram that helps the users in answering these questions. Right now, basically the only answers it provides: who had the highest number of interactions. And for many cases, you can't even read the names of those that the people interacted with because labels there are dozens of overlapping labels.
This is a pretty uncharitable comment friend... presumably you aren't the intended audience for this article. Anyway, you've never met anyone like this before? I meet people like this all the time. They are much more interesting than those devoted to hyper-rational atheism AKA the Times New Roman of metaphysics. For one, these 'half-baked' types tend to be staggered by genuinely marvelous things, rather than just their perception of another person's incoherence.
GM Transforms Who Wins, Who Loses in the Future of Work
1. Talent attracts talent. You should be somewhere where ideas can flourish.

2. You need to be in a group where people encourage crazy ideas.

HN and the Bay Area have a lot of 1 but not 2. I guess you also have to be somewhere where people don't take themselves too seriously.

A lot of them also seem like crazy fun ideas at first, and often you hear people saying they're just sticking around for the community. You could feel it gain momentum, people get excited and energetic.
I have a rule - I don’t fly long haul economy for an employer, ever. Premium Economy is the minimum tolerable, and if it’s more than once a quarter, I only fly business. No exceptions.
Utter BS. Bach would be flagged, first because he's a white male, and second because he was a "rebel". Of course that wig would win him points, he's clearly cross-dressing.
Though the contact symptoms are described as dermatitis, not gross toxicity. Still a good idea not to handle it.
Canva's market value jumps to $5.2B
Also, if you haven't seen it before, read the Linux kernel Changelog. The latest Changelog can be found at [0]. Almost every commit tells a story, unless it's a trivial fix. If there's a bug, it often contains detailed analysis and rationals, and it's a form of important documentation.

Although it's not always practical to follow them in personal/work projects - Linux commits are the results of multiple rounds of reviews, and the commit log is its justification - but in personal/work projects, commits are made in real-time as soon as you debugged/refactored something. But I still use Linux kernel as a guideline for my own commit log, at least for new features or bugfixes.

[0] https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.7
> I don't want your entire life story in my commit log.

I agree with this, but I think yours is too short.

Scientific papers typically introduce enough information such that a person familiar with the field but not an expert in that particular area can understand generally what's going on.

That's my ideal for a commit message as well: someone generally familiar with the codebase but who hasn't looked at this specific code (or perhaps not in a few months) should be able to understand what's going on; then the job of the reviewer is basically just verification.

My "template" is normally something like: 1) What's the current situation 2) Why that's a problem 3) How this patch fixes it. So in this case, it might look something like this:

---

Convert template to US-ASCII to fix error

$functions use `.with_content(//)` matchers to do X. These matchers require ASCII content. The $foo template contains a non-ASCII space; this results in the following error:

ArgumentError:
invalid byte sequence in US-ASCII

Fix this by replacing the non-ASCII space with an ASCII space.

---

No need for a life story, but still searchable, and has enough information for even a casual contributor to do a useful review.
If the linear / logistic regression stuff is improved through Bayesian methods and hierarchical modeling, and if it grows large enough that there is a need to use MCMC sampling techniques for approximate posterior inference, then even though the model specification itself would be very simple, I’d absolutely say this is “ML”.
“Whoever thought Pascal is dead, should now think otherwise.”

I didn’t think it was dead, only mostly dead.

With seemingly every language adding the ability to compile to WebAssembly I wonder if we’ll see one or two languages come to the fore for converting FROM WebAssembly in order to fix issues or add features or perform whatever general maintenance needs are required before compiling back to WASM.
“Our encrypted traffic transits the Five Eyes” and “the NSA/FBI can walk into our datacenter with a National Security Letter” are not comparable scenarios.
GitHub – Configuring automated security fixes
Someone typed and commited that whitespace character on purpose.
Something like this?

https://www.youtube.com/watch?v=xKhFCMO78OE
There's not really any case where another source control system works better, but lots of cases where they work just as well.

Mercurial, for example, is functionally identical to git, but some people prefer its interface.

For a highly centralized organization where people only ever work on the organization's intranet, a centralized source-control system like SVN works well enough, and may have some advantages for the organization.
This is great work, I could not believe the fact that it keeps state (like the current epoch number, and of course all the current model state). Makes Python even more dynamic.

Nice that you could condense it to less than 100 lines of Python!
Especially because before 1950 the Gros Michel was about as popular as the Cavendish now. And then it got wiped out by a fungus so instead of diversifying, all banana plantations collectively switched to Cavendish. Now there is a new fungus the Cavendish is susceptible too, so perhaps in a few years we'll all be eating something else. Hopefully more than a single alternative variety is found this time...

https://en.wikipedia.org/wiki/Cavendish_banana:
"After years of attempting to keep it out of the Americas, in mid-2019, Panama disease Tropical Race 4 (TR4), was discovered on banana farms in the coastal Caribbean region. With no fungicide effective against TR4, the Cavendish may meet the same fate as the Gros Michel."
> Which do you think are the best universities in Europe, for a MS in the various fields of Computer Science?

I can only name the best two that are worthy of this for a Masters degree in Computer Science or similar.

Even 10 years later, it is still both Imperial College and Cambridge University in that order.
You managed to contradict yourself in only two sentences, bravo!
Yup I did a 22 hour bus ride in South America, bumpy, constantly turning. I'm 6'5 and get motion sickness.

The layback seats made me enjoy it far more than even a 5 hour flight.
Also, the toilets can be locked…
> I don't want your entire life story in my commit log.

Then I never want to work with you ever (or any code base you ever touched) because of your laziness and lack of experience working with huge code bases where long commit messages are life-saving. Also you don't care about your colleagues and long-term maintainability.

Debugging bugs for months and weeks because of lack of proper commit messages is the most frustrating experience.
Breathly: Open-source react-native breathing training app
<irony>
Time for a COBOL WebAssembly backend.
</irony>

Congrats to the FreePascal team for the amazing product, whenever I miss my teenage years with Turbo Pascal I fire up FreePascal and relax.
For those accepted, what date is your interview?
Timing crystals are also exquisitely precise. For example, top-of-the-line ovenized crystals achieve uncertainties of around 1 part per billion. This seems somewhat surreal for an effect that is based on mechanical resonance.
You think the dairy industry is unique to the US?
That doesn't sound like new-age mysticism to me.

It sure does. That's classic new-age mysticism. They love hand-wavy energy modes and vibrations. If it had the word "quantum" in it, it'd be ticking all the boxes. Maybe it's an unfortunate case of a non-native English speaker not realising that these terms are commonly hijacked by bullshit artists.

To suggest that some stars are invisible because they emit EM radiation that simply can't interact with anything on this earth is an incredible statement that requires a lot more than just "I can imagine".
Are you sure? This does not seem peaceful to me:

https://www.youtube.com/watch?v=VYuwTqahNr4
Anyone else getting this error? I tried on Debian 9 and MacOS 10.14.6 after installing via pip.

import reloading
Traceback (most recent call last):
File "<input>", line 1, in <module>
import reloading
File "/home/lucas.mccoy/.local/lib/python2.7/site-packages/reloading/__init__.py", line 1, in <module>
from .reloading import reloading
File "/home/lucas.mccoy/.local/lib/python2.7/site-packages/reloading/reloading.py", line 87
exc = exc.replace('File "<string>"', f'File "{fpath}"')
^
SyntaxError: invalid syntax
Even the very first photo of it in-hand looks incredibly uncomfortable.
This is brilliant.

"Explanation - Topic" sounds a bit wonky as a section/title. Does anyone have a suggestion what to call those types of articles?
Blackberry used to be able to do something similar. Obviously without any of the smarts, but you could view all of the conversations that you'd had with a contact across multiple services all in one place. It was handy to have.
If you're talking about putting that in ads, then it becomes a chicken & egg problem - people who care about ad blocking won't see your ad because they already block them, people who don't won't care about Chrome breaking something they don't use.
Microsemi is the company formerly known as Actel. Microchip is the company that makes (amongst other things) PICs and bought Atmel (AVRs etc)

edit: I see the article is the one in the wrong - it should have said Microsemi
> The only thing that is a bit of pain is a good release support, but that has been changing for better.

The pain in Elixir releases I've seen has nearly always been self-inflicted. You can just run "mix phx.server" on the server and have basically an identical deployment experience as if you were running Rails, Django or similar.

Releases are an option that brings some power you don't get in other languages (particularly if you're using Distillery, which makes hot upgrades possible).

I wrote a guide on Elixir deployment that covers a way to use the new mix releases and deploy to Render in minutes. It also links to guides covering a number of other patterns, including the one I currently use for Alchemist Camp. It might be useful for others feeling some of the pain you did in the past!

https://alchemist.camp/articles/elixir-releases-deployment-r...
Write a bot that detects earthquake-related tweets, a la xkcd.
> good core count for development workstation

As many as you can afford.

The reasoning is that your code, when it's ready and in production, will run on machines with more cores than they had available last year. If your code can now face its future runtime environment, then you'll have fewer surprises later.

A second reason is that machines with many cores degrade more gracefully under high load. You may be compiling across a dozen cores, but you'll still be able to search Stack Overflow or answer Gmail.

You may also consider going for higher memory bandwidth. 8x8GB DIMMs is better than 2x32GB ones.
This is actually called the "throw over the fence" open source development model.

Most Google projects are like this, including Android which is the main reason why vendors struggle with os updates.
Kind of. Parliament can create laws, and parliament can issue parliamentary resolutions that essentially say "This parliament wants this government to do X".

This was the latter, and all parliamentary resolutions are inherently much weaker than laws because they generally only apply to that particular parliament and that particular government. And we've had many changes of both since 2010.
The rest of the absurdity of your argument aside, claiming that only humans can do a thing that humans invented solely for themselves to make your point gave me a good chuckle.

We are animals like all the others, even if a percentage of our population evolved the ability to continue to digest milk into adulthood.
All things scala are music to my ears
Portal-Ble: Touchable Augmented Reality on Your Phone
All US Dairy Cows are descended from the original two cows, and all humans from the first humans, and on, and on.

It is interesting how selective breeding has played a part in several industries though. This example sounds a little appalling to my mind, but I'm a fan of horse racing and all thoroughbreds have to trace their lineage to one of three horses or they're not considered thoroughbred and I'm fine with that.

What is it that makes some examples unnerving, and some acceptable?
Show HN: Toucaan–Rethinking CSS Frameworks
From https://en.wikipedia.org/wiki/Command_Loss_Timer_Reset :

> Most spacecraft have more than one Command Loss Timer Reset for subsystem level safety reasons, with the Voyager craft using at least 7 of these timers.
CM-200 Connection Machine
Nobody is trying to stop they to migrate to any other country of the planet that they prefer. People does this all the time.
Surely Kobayashi Maru should be a Navy development hub.
Ask HN: How to help old timer adapt to new company direction?
Suppose for a second that we're introducing changes to our software stack that make it more modern and easy to work and that's the right thing to do in our situation. Considering that...

There is a person that has been in the company for 6 years and worked on a bunch of building blocks that are now being replaced with, what we consider, more modern alternatives to improve the way we work.

This person does not see anything wrong with the old ways of doing things and has said so a few times. For the last 6 months, he has been really angry and communication style has become super aggressive, there is a lot of passive-aggressive comments as well.

We have tried explaining why we're doing these changes, showing the benefits, where it will get us, etc. But this person's attitude has been to shutdown and silo themselves more and more. It's looking like he's in a 1-person subteam inside our team.

Do you have any suggestions about how to overcome this situation? Have you had this situation in your team?
I’m super happy with Runbox.com both from service prospective, business model and location
Thanks for pointing this out — I was about to write that I found the A380 to be the most comfortable airplane for long-haul trips. I also found it to be quieter than the 787, but haven't actually measured if that's actually the case.