skysight-inc/HackerNews huggingface dataset:
It's demonstrating that a new class of materials which may be suitable for solar cells which previously had a degradation problem can be made more degradation resistant.

The interest in this class of materials is that they can be made cheaply. Making silicon for solar cells is an energy intensive process requiring high temperatures. The process for making this material doesn't require very high temperatures or use much energy. Once you have the components, making the material is very similar to growing say salt crystals.

Organic molecules with negatively charged components combine with metal ions forming a sheet structure mostly dictated by the shape of the organic molecule and type of metal ion used. This brings us to the other reason why this class of materials is interesting, they're somewhat programmable. By using different organic molecules with different shapes or different metal ions we can get different properties.

In addition, unlike nanomaterials like graphene we can make similar materials(metal organic frameworks) by the ton.

Now, the material they made isn't very good as a solar cell or a photodetector. The efficiency at converting a single wavelength of 365 nm(UV) light to electricity isn't very high. In addition, the response time is something like 40 ms, which seems pretty high for a photodetector. But the main point is that it doesn't degrade much under harsh UV radiation(CORRECTION: they measure degradation under exposure to air), with photocurrent 94% of the initial value after more than 60 days of aging.

I'd say it's worth watching the development of this type of material. Part of the reason perovskite solar cells generate so much hype is that their rate of efficiency improvement with time is high. The same may happen with this class of materials, but at the current time there's no indication of rapid improvement.
Sounds like a really long and uncertain way to assassinate someone.
It's not like a credit card at all. With my credit card if someone steals my card and runs up a bunch of debt I'm not on the hook for the charges.

With cryptocurrency I'm completely out of luck and my money is gone forever by design.
“I don’t like it” is a child’s statement. It is almost never calculated, and I strongly disagree with the assertion that anyone’s trying to cause discomfort.

As someone who has said some really hurtful things, I can’t tell you how much it pains me to have my thoughtlessness mistaken for cruelty.

I recognize it’s not someone else’s job to be understanding of my thoughtlessness, which is why I must employ mindfulness at all times.

I’m also 100% sure that some people come wired for tact, and some don’t.

My son is laser focused on the feelings of others, like my wife, while my daughter is totally oblivious, like me.
This is a pretty common pattern for applications that support using multiple identity providers via protocols like OAuth or SAML.

The site looks up the supplied email and decides where to send the user - if they have a password, ask them for it; otherwise send them to their identity provider to authenticate and sign them in at the end of that process.

This does leak a little bit of information about users - a third-party could observe whether "bob@megacorp.co" gets redirected to Megacorp's SAML server or gets a password prompt.
Very well done. Clear UI. Simple to use and it delivers a good overview.

The one thing I would suggest ( I assume this would be a part where you attempt to monetize it ) is a referral to financial advisors, who can use the information to assist.
For what it's worth, I find that tiktok leaves me much more fulfilled than something like twitter or HN or reddit, which can all be quite toxic. To be sure, you can go overboard, but there are a lot of interesting perspectives. It's easy to find people with really interesting hobbies or cool projects
Blood pressure is more of a function of resistance to flow than volume (ignoring things like trauma induced hypovolemic shock - aka bleeding out) - which can be from many causes, including vasodilation/constriction, plaque buildup, compartment syndrome, heart issues (bad rhythm, valve issues, etc.), shock, or regulatory dysfunctions indirectly impacting those areas.

Volume issues, especially difficulty processing waste/removing excess fluid (renal failure or disfunction), can pop up, but reducing volume as a solution is kind of like taking gas out of your gas tank because your throttle keeps getting stuck and you don't want to run anyone over.

Yeah, it can kinda help maybe (and if you're desperate you should do it), but it isn't really addressing the underlying issue. Sometimes you don't have time or the ability to address the underlying issue, but it shouldn't be the first thing to go to.

Not ridiculous that say excess iron or blood volume could be an issue or help if addressed - just not a high odds thing to be tackling usually.
If you're puzzled by asset value appearing to decrease over time, it's possible this is because values are shown in Today's Dollars, i.e. values are adjusted to account for inflation. If you set the asset to appreciate in value at a higher rate than inflation, you should see the value go up over time.
I made something similar ages ago: https://www.cityclimes.com/

It's full of bugs and the UI isn't great, but it was my first Elm and Rust project.
Contrary to majority opinion, I like NTSC. It's a fun signal with a lot of hacks possible.

In retrocomputing terms, NTSC is something I don't mind having around and am able to deal with.

In watching TV / video terms? Yeah, NTSC is craaaaaappy! I won't miss it either, though I do enjoy the look on some programs.

DTV is pretty great. I live in a region where signals are reasonable, and it's just better overall. For the few hours I watch TV, DTV gets it done.

On the analog vs digital front, for things like embedded projects, I really dislike digital video. It's resource intensive. Analog RGB or Component is EASY, lean, and clean.

Right now, the golden time is ending. If you want analog video gear, good CRT's that sort of thing, it's possible still, but starting to get expensive. I nabbed a nice multi-format PVM for my retro gear / computing experiences, and a few other displays, and a couple TV's to modify to make an arcade cab, with a real, fast, gorgeous CRT.

Now is the time! Won't last long. If you want analog, get it. Soon, it will be a curio, rare, expensive.
today doesn't have to be the worst day ever to generate anxiety about the future. knowing that cavemen got ate by dinosaurs wouldn't make it any nicer to pitch a tent under i5. but i think it's pretty clear that barring some kind of unexpected radical change, and maybe even in that case, many of us are going to experience deprivation and terror unlike anything we've known before. at previous moments in history, if it got too bad and all else failed, you could just start walking and live off the land on your way to someplace nicer. it sucked and was often violent but people had the skills and the world had the space. that's not an option now.

i can't imagine surviving something like a famine or civil war in the modern world. and it doesn't look like that kind of risk is growing smaller. could you take on some total disaster like that while caring for a child? what kind of person would you be at the end of it? what kind of person would they be?

and it doesn't even have to be that dramatic. there will be a lot of suffering that doesn't touch us directly, but it will still shape the places we inhabit. could you stand to live in a total police state, even if you're safe (from the outside) and relatively wealthy (compared to a refugee)?

these are the questions on a lot of people's minds. and nobody has good answers, because there are none.
Steam Deck
> Just common sense. People invest in companies to get more money, not to lose money. There are exceptions, they are very rare, especially for public companies.

Yeah, that's why investors invest, but you (like many people) are forgetting that society allows companies to exist in the first place: to provide social value and increase the general welfare. That's not measured in how much money a company makes for its investors.

If an employee finds themselves working for a company that's hurting society, their primary duty is to stop that harm, not to be circumspect of the investor's profits.
This...is...marvelous.

The only thing I might do different is to implement a force of mobile Garden Gnomes to converge on people and be generally annoying. That way the neighborhood kids have something to mess with and talk about.

You could double down and throw in squirt guns too for the laughs. God help the world when I have more time on my hands than sense. I will be the Grumpy Old Man of the block.

I'd need that time too to iron out the kinks in target detection and rules of engagement, which would have to change over time to keep the kiddos guessing and having to get creative.

It'd be like Ender's Game, without the pressing moral quandaries. Probably need really understanding and good neighbors too. That probably constrains the implementation more than anything else.
And we don't even know if their measurement is right--they probably got a high rate at first because people weren't used to them and were deceived. As people wise up the effectiveness will drop.
It's not a contract in the legal sense. It's a contract in the sense that both sides have obligations.

When you break a legal contract, you get sued in court. When you break the social contract, the mob rises up and kills you and everyone like you that they can get their hands on. So the rich and powerful had better treat it like it's a real contract, because it's what protects them. It keeps them in a world where they are the rich and powerful, and keeps them from a world where power is only fists and guns. The rich and powerful don't want that world; they want this one. So they'd better keep their side of the social contract.
Ha, that's true, I was thinking in the context of if they asked what is the most tactful response
I used to do that too, then I installed Blockada. No ads anymore, even in apps.
Other stuff aside, can we please not go around capitalizing the word "founder"? I've seen it before in a few other blogs that get posted here. Makes it sound like an exalted priesthood, and it's pretty nauseating.
>Edit: although they do track your physical location in real time through the app. That's more direct spying.

But for that to happen you need to explicitly gave consent?
I do not want any ads. I'm using Firefox containers for isolating Facebook on regular websites, I liked 4 total pages, I removed most of the information from my profile, I have scrubbed 90% of my past activity. The only things I deliberately allow Fb to know are my friends and my old pictures. I feel like that is an equitable exchange for me using their website.
The Battery Revolution Is Just Getting Started by Rodney Brooks
Paris welcomes first pizzeria operated by robots
The reason they aren't using more established pv tech is that they're demonstrating a new class of photoelectric material. This material may be cheaper to produce than more established pv materials and may be easier to tune to specific wavelengths, which is of interest to photodetection
In addition to what the other commenter said, it’s important to understand the scale. Cutting edge research 600 years ago was solving cubic equations. Today, cutting edge research requires potentially years of advanced study to understand the objects involved.

There are more mathematicians alive today than at any point in human history, and their work has become specialized to a tremendous degree. Gone are the days where one mathematician could do substantial new work in a dozen diverse areas.

So, in short, the fact that historically lots of pure math has not found use, the specialized nature of modern research math, the volume of work being out out, and an irreverence for applications(again, this is _pure_ math) leads me to be doubtful that even a moderate amount of modern pure math research will ever be useful in any practical sense.
> The question is are they doing it because it’s not cost effective and they don’t have the infrastructure to compete

If it's cost prohibitive then the solution is common carrier status to become like electrical distribution network.

If it's not cost prohibitive that then the solution is criminal prosecution. It doesn't matter whether or not there's a formal internal agreement; there's clearly intent and informal collusion.

Unfortunately I don't have the answer here. And it was 9 years ago so well beyond meaning other than an anecdote.
I don’t think that’s a good reason. Production code is also ugly.
Might be different for different fields: if a firm with initially lower domain expertise but greater development & implementation resources can get sufficient understanding of a good idea to generate a practical solution themselves, they might gamble that by the time the originator of the idea gets the funding and resources to be of any significance in the market, they will have achieved a runaway lead with their mimicked version.
That's not what people who advocate for absolute free speech think.

I have no opinion on that. My comment was about the statement 'free speech is not an absolute human right' whose truth is obvious enough to not be very interesting.
So, I've developed some software, gotten a bunch of users and developed a bit of an income stream, then there's a big bug and now I have no chance of future earnings from that software. I'd probably abandon that project and move on to something else instead; maybe get a job at $BIGCO or become a turnip farmer. So some people got an insurance payout, but the software they were using and considered important enough that they would pay for insurance on is now abandonware for them and for any other users that happened to be out there.
> aleph-1, which is the size of the power set of aleph-0

In ZFC, aleph-1 is not the size of the powerset of aleph-0. Instead, aleph-1 is the next larger cardinal number after aleph-0. The size of the powerset of aleph-0 is called continuum or beth-1. In ZFC, we can show that the size of the set of real numbers equals continuum, but it is not possible to relate continuum to a specific aleph-k (though some can be ruled out using Easton's theorem).

Now, the statement that aleph-1 is the size of the powerset of aleph-0 is known as the Continuum Hypothesis (CH) and is independent of the axioms of ZFC. Therefore, your claim that aleph-1 is the size of the powerset of aleph-0 cannot be made in ZFC. The statement can be made in ZFC+CH, but then the question which aleph-k is the size of the real numbers has a straightforward answer: aleph-1.
Tech workers are preparing to quit. Persuading them to stay won't be easy
>"You want proof? Look at their financial statements."

Homeopathy peddlers make a killing, so does the agile consultants and th catholic Church, if this is proof they must both be right?

Just because someone made loads of money doesnt mean their claims are sciebtifivally valid.
They just released a legislature plan - already in temporary effect - that kinda allows private companies to spy on our non-end-to-end encrypted communication to combat child exploitation; this was a rushed vote with coercive elements.

I think every country wants to monitor its citizens and those that have the technology actively do so. It is indeed responsible not to get fooled by marketing when those countries say they don't.
All the non-tech-nerds I see use phones or computers hit the inline ads at a very high rate. As in, on most searches. They do not realize they are ads, mostly, or do but aren't paying attention.
I think the real problem that facebook leadership sees isn't that they're amplifying overly partisan posters, but that the popularity of these posters demonstrates that their userbase is increasingly low rent and heading toward an AOL/Yahoo style long goodbye.
The sad part is the most misleading parts were added for HN submission
The web worker where wasm is running in would be the one that handles the whole game, and the game has to be told the inputs. Inputs are only grab able on the main thread, and rendering is only done on the main thread. If you run the game in the main thread too you can end up with your browser tab becoming unresponsive, or have delays in the input and rendering that affect the games performance.

It's the same as when you make a python UI all in one thread, you can't receive user input and also do some long task at the same time.
Yes that it exactly the idea. Translating between both mono and poly repo, partial sharing with others (distributed development) and gradual adoption without a big bang.
The problem being only that these startups are still acting in the bubble of common beliefs of the field. So these are actually testing the beliefs, not their real-world effectiveness. (Also, at this stage, you have to comply and conform to the delivery networks right from the very beginning with little chance of competing with the big, established ones.)

Edit: Moreover, you had to compete with the paradigm of low effort, high interchangeability and big data. (Meaning: interchangeable code, interchangeable users, interchangeable professionals, interchangeable clients, and lean know-how stack as it's "all in the data". While this adheres to criteria of optimization, it doesn't necessarily mean that it represents an optimum of effectiveness, as well.)
There are very few things C can do that Rust can't, but there are lots of things you probably shouldn't use Rust for: this being one of them. On a purely speculative level though? Sure, it's totally possible as long as you're willing to break out a few unsafe blocks.
Let me venture a possible application, since there are already many responses celebrating pure mathematics.

As far as we understand, the natural numbers are not sufficient for modeling physical phenomena. The reals/complex while immensely useful also occasionally turn out to be “too complicated” to give theoretical guarantees/proofs of models working well. On the practical side, that means that these models/algorithms can’t be guaranteed to not give junk results, while working on the domain of real numbers.

Now, purely speculatively, since the naturals/rationals are aleph0 in size and the reals are aleph2, that means there likely exists a set of numbers of size aleph1 sitting in between the two. What if we could use that set of numbers to construct our physical models? Could we somehow guarantee better behavior… Eg: in quantum mechanics, or field theory, or chaos, etc?! :-)
I suspect if they provided telemetry into the Facebook Zeitgeist, it would show its userbase to be terrifyingly stupid and superstitious folk on par with the late Carl Sagan's predictions in _The Demon Haunted World_.

For IMO the Google Zeitgeist was bad enough 10 years ago in a somewhat simpler time when we could still laugh at stupidity and ludicrous conspiracies, but stupidity is a major influencer on social media now that it has been monetized and drives revenue. I don't see a solution to that any time soon.
No, the whole promise of "trickle down" is that wealth is supposed to trickle down, as the name suggests.

It does not work and increasing inequality is could be called "trickle up".
Shorts cemented me extending my block on youtube another 3 months.

I already have a block most the time, due to being a sucker for youtubes junk food algorithm (even with history off and not signed in amazingly..), but I find shorts to be the most non-informational yet addictive form of media content, which it sucked to see were taking over youtube.
In practical terms, "counting and measuring" means well-behaved arithmetic operations like addition, subtraction, multiplication, division, roots etc. (and often specific algebraic structures like rings, fields etc.)

Rational and real numbers represent the most intuitive concept of quantity with different cardinality; natural numbers are more basic in theory but a restricted special case in most application (they can only count "countable" objects and they aren't dense); complex numbers compensate unnatural weirdness with important applications; then there are other very number-like niches (e.g. p-adic numbers, quaternions, algebraic extension fields...) and number-based arbitrary constructions (multidimensional vector spaces, matrices and tensors...).

> Show me how you can count with reals.

Like you count with natural numbers, plus many other possibilities because there are more numbers to count with. The same applies to rational numbers (which exist more than real numbers), complex numbers, etc.
An Ethernet cable inside a pressurized tube. If pressure changes you know someone may be trying to tamper with your line.
There is an interesting conversation about this in https://www.arraycast.com/ (I think it was the second episode).

They talk about the cognitive load needed to understand code in different languages, and how thanks to the use of primitives and less levels of abstraction, they find array languages easier to work with (eg: with implicit loops, you do not need to keep track of a counter and an exit condition).

Even if you do not share this opinion, I recommend this podcast. There have been some threads in hn about it.
I've been very interested in using containers to have reproducable test environments in the past. I've built something for this: https://bunt.build

I am interested in seeing the configuration leveraging happening in your project though. Very cool.
That 1-bit spectrum is beautifully put.
No amount of empirical data is ever "good enough" for the mathematical standard of proof. (It may be enough for mathematicians to "believe" something in some informal sense, but not enough to consider it "proved".) You can see some examples at the answers to these questions; maybe at least one of them will be interesting to you:

- https://math.stackexchange.com/questions/514/conjectures-tha...

- https://math.stackexchange.com/questions/111440/examples-of-... (and maybe https://mathoverflow.net/questions/11517/computer-algebra-er... )

- https://mathoverflow.net/questions/15444/examples-of-eventua...

(There are over a hundred examples at those questions; I guess this counts as a lot of empirical data that empirical data is not enough! However, sometimes empirical data can be enough for a mathematical proof; for instance if you know somehow that a polynomial f is of degree less than n and you have shown that f(x)=g(x) at n distinct points, you can indeed conclude that f=g and so on — see the "Proofs by Example?" section of the first "Proof Machines" chapter of the book "A=B" available online https://www2.math.upenn.edu/~wilf/AeqB.html .)
I don't think so, which makes my account more precious :)
>quantitative easing - which arose because of insufficient oversight over wallstreet.

Many would take issue with this conclusion. It's the fact that the Fed exists as a lender of last resort that created the moral hazard in the first place, thus enabling "Too big to fail" and all of that.
This is obviously farcical because SF does not exist in a vacuum separate from the federal government or the desperately poor conservative areas that siphon tax revenues from the progressive cities. Let alone the fact that SF hyper capitalism is about as far from progressive economic beliefs as possible.

But by the same vacuum-logic, Kansas under Brownback is what conservatism looks like in practice: a massive, unmitigated failure so big that even the conservatives themselves raised taxes. And that’s with all that free tax money from well run states helping out.
Nothing is an “absolute human right.” We’re all animals who struggle to survive, like any other animal. That’s not the point.
That has nothing to do with anti-Semitism. You made a bold claim above and have nothing to back it up.

Please specifically link an article from a well regarded source that covers Damore's alleged anti-Semitism.

If you're unable to produce, what you're doing is actively trying to tie as much negativity to the name in order to gas light people into thinking he's a monster. You're propagandizing and poisoning the well.