skysight-inc/HackerNews huggingface dataset:
> Only to those without a firm grasp on the laws of thermodynamics.

You are the one completely confused by the laws of thermodynamics.

A hydrogen fuel cell is an electrochemical system. So are electrolyzers. They represent the equivalence of charging and discharging a battery. There is no fundamental reason why this must be less efficient. You can potentially reach 100% efficiency at least in theory.

What people really are saying is that “in practice,” it is less efficient than a battery setup. But this is also mostly made-up and filled with exaggeration. Electrolyzers are reaching 98% efficiency. Fuel cells, at least in large installations, can already reach 85% efficiency or battery (assuming heat recapture).

In short, it is already pretty close to what batteries can do. Future advancements will eliminate the efficiency gap almost entirely.

Furthermore, it is actually more efficient to store and move around hydrogen than it is with electricity. Energy storage at scale is very difficult, and enough of a problem that we are looking at using hydrogen for long-duration energy storage. That alone basically kills the argument that batteries have any advantages in this respect.

Finally, as the economics of hydrogen production scale up, we can expect cost to approach zero. That’s because it is very much like wind and solar: We’re using a basically free resource (wind, sunlight and water) and turning it into a fuel. People criticized the efficiency of photovoltaics in the past, but the fundamental advantage of not having to pay for fuel means that costs can drop to nearly zero, and it did. This is the same story again. Except nearly free green hydrogen in the long-run.
A significant number of AWS Customers are "internal", and—believe it or not—the cost of resources does come up in design meetings at Amazon. This change might actually light a fire those teams to actually start supporting IPv6 properly.
Show HN: Tunwg – open-source E2E encrypted HTTPS tunnel to local servers
Hello!

To expose servers running on my local network, I created [tunwg](https://github.com/ntnj/tunwg). Unlike similar solutions (ngrok, cloudflare tunnels etc.), tunwg doesn't decrypt HTTPS traffic and forwards it directly to your local client based on SNI. It generates persistent subdomains across restarts, and can be used with your own custom domain, without requiring any account.

You can self host the server too. The server is stateless and adding new clients doesn't require any server configuration. The default server is bandwidth limited.

Tunwg client and server run wireguard interface on gvisor's userspace network stack, so it doesn't require or interfere with your OS wireguard. On startup, client exchanges wireguard public key with server, and outputs a custom subdomain derived from client's wireguard key. The server gets the subdomain from SNI and forwards the TCP stream to the relevant client's gvisor stack.
They are not the only alternative.

Ammonia (a toxic gas) as a fuel is an insane idea and will lead to needless deaths.

Efuels are incredibly inefficient. Hard to justify paying 10x the price.

Ammonia or synfuels are not the only alternative. The elephant in the room, the one fuel that is being used today is biofuel.
Judging from the qps and cost columns, milvus/zilliz is much more efficient!
It's probably a good choice for large scale data.

It would be nice to have another column to compare the largest scales these DBs can support.
Yeah, I suspected it was a necessary, but not sufficient, requirement. Probably pricing will be determined based in part on how many people show interest (and how their manufacturing process evolves).

But I've never seen a crowdfunding campaign that had no advertised price — very strange!
Hard to TL;DR because it's a twisty tale that doesn't make a lot of sense.

It was the name of an unrelated book by an obscure author that was adapted into a "film treatment" by Willam Burroughs; and it was sitting on the right shelf when Scott and Co. were scratching around for a title. Neither manuscript had an influence on the final film, and the term "Blade Runner" is never explained in the film.
What does loosening zoning restriction shave to do with "planned economy"? One of the strongest proponents of this, the Strong Towns guy, is a libertarian.
Fascinating, this led to this projects which is pretty interesting. https://www.modos.tech/blog/modos-paper-monitor
Seems like a very exciting effort and product but I'm not sure if it's still active.
The strange way Chuck E Cheese is like a central bank.
Given the difficulties in payments when it comes to gray-market dick pills, I’m surprised he wasn’t an early bitcoin whale and made more than enough from that to just retire.
You should explain how this works then. How exactly do you derive a prediction from the price? Also if the people with deep knowledge of the technology use the prediction market for hedging, and all the "outsiders" use it for speculation, then the signal is disturbed anyway.
Just wanted to point out as a alternative datapoint thay i havr both 13: and 25" greyscale. And 25 is a much better experience. 13" is just to small. Im happy with 25" and will buy this new with color. I do not have flicker, at least not like you. but you need strong lighting on the screen.
I don't think it is a tolerable outcome for the employees; perhaps they were hoping for another bailout? We should also remember that unions suffer the principal agent problem just as badly (and perhaps worse) than corporations and governments.
Why not load the data into sqlite dB and let the clients query that? Is there a reason you're loading 10s/100s gb into memory?
> As long as the price is good and they get a response within 3-5 seconds, they're cool.

You're so amazing aren't you. You even know precisely what the customer wants. Are you saying that if I offered a service with a 2 second response they're not going to take it? Nah they only want 3-5 seconds!?

> Technical excellence has very little impact on the revenue, compared to other factors (product/market fit), so people making business decisions don't care about it.

If you don't care about it how do you know it doesn't impact? If you don't care you don't know the details. So problem is, maybe if you cared it'd make a difference?

Also what does this have to do with technical excellence or whatever you're referring to? The whole point was the 1 person that could do a job better than potentially 5. It is about delivering business value.

> Business is always a gamble.

And? It was the poster above that said business preferred predictability and I responded to that. You're now taking it out of context and trying to derive other meaning from it.

So is it predictability or a gamble?

> It's like you are trying to navigate a ship in a storm, and the mechanic keeps telling you how he can shove coal 5x faster than others and hence needs to be paid more. Except, you never need it that fast, and need to have 2 onboard anyway, in case one gets sick.

Again we're back to assumptions. How do you know this mechanic that shoves 5x faster will get sick? Maybe they never get sick? So it'll be better than hiring 2 that might get sick. Again, that was the original argument. If you change it - then whatever. You might as well say those 2 you have onboard ALWAYS get sick so I still prefer the 1 that can shove coal faster.
The outside of an oven running for a long time will tend toward a steady state temperature at which heat is lost from the surface to the room (by radiation, conduction, convection, etc) is the same as the rate at which heat is added to the surface (from loss through the walls). Increasing insulation will decrease steady state temperature, and keeping a safe exterior temperature matters even in a commercial kitchen for safety and for comfort (even if no one cares about the comfort of the cooks).

One can also actively cool the exterior surface by forcing air through a gap in a double wall oven. Many residential ovens do this.

As far as I know, the actual material difference with residential ovens is that most of them are mean to be installed in cabinets, which severely restricts the amount of heat that can be safely dissipated through the walls.
The wording of unfair is more of a fun use of the word. Because Apple vertically integrated the whole product and software supply chain, they are singularly able to do things others cannot. In that context, if one is playing "fair" on the terms of everyone else when they could do more...they are losing.
> I've started writing stuff with msword and I honestly like it better.

Give TeXmacs a try. You don't need to suffer between Word and LaTeX :)
The only really interesting breakdown I’ve seen along these lines was a dissection of how cheap Starbucks’ cost of capital is due to their gift card system. It’s quite a remarkable business they’ve created totally apart from selling coffee!

In my opinion frequent flyer points are only interesting to consider in terms of the implications of a currency that will only get shittier over time.
The threat of a strike was the final blow, causing them to lose customers and dropped their stock price such that they didn't have anything to borrow with.

All of the bad decisions they'd previously made out them in this position, but the union threatening to strike was the straw that broke their back- despite the union withdrawing the threat.

That last tidbit probably tells you all you need to know about how little chance the company had at surviving.
This article is trash; no need to prevaricate.
“As soon as it works, no one calls it AI anymore.” —John McCarthy
How do you feel about the 2nd amendment and bans on automatic weapons? /s
The Chicago Mob vs. the 1933 World's Fair
I'm not going to argue about that, since I never claimed that JSON5 is backwards compatible with JSON. I said software can move from JSON to JSON5 without breaking backwards compatibility. If you want to claim that JSON5 is forwards compatible but not backwards compatible with JSON, that's fine by me.
Um, don't argue with the church or else you're going to hell. The priests say so.
Been there, helped design an entire embedded runtime based[1] around it, didn't mind it.

FWIW Eventing systems are not the same as callback hell. "Tell me when this variable changes" is the heart of a lot of really well engineered systems, including high performance hardware IO. (Fill this buffer w/o bothering the CPU, when the buffer is full, call this function to process its contents).

Eventing systems are nice.

> The least painful approach to things like that. to my mind, is an explicit event loop, and posting events on a change.

That is how Windows works under the covers.

Events are just syntactic sugar on top if that, in replacement of a giant switch/case statement.

[1]https://meanderingthoughts.hashnode.dev/cooperative-multitas...
+100 for https://healthchecks.io/
> Information about brand reliability is widely available

I too see this information everywhere but I have no idea what to trust on this anymore and what information is paid for and gamed by the companies themselves. Brand reputation is its own business these days with its own products and markets.
Biofuels are not green. It is purely greenwashing since the production of biofuels is very carbon intensive. It is also very environmentally destructive since it takes a lot of farmland to produce.
My example was in the case where the prosecution failed unjustly. Or are you allowed to talk about a failed prosecution and still claim that you believe the individual in question did it? Even if so, that also poses a problem in cases where the action was immoral but not illegal, not to mention if the case cannot be prosecuted for financial or other reasons.

It's confusing from a US perspective, where we believe free speech is important since it allows the bringing of injustices to light. Are courts in the Netherlands trusted so much that they leave almost no injustices for others to speak out on?
On, On!

Directory of HHH, including the US
https://www.gotothehash.net/
> Were you running on something besides linux, or not natively?

Running on MacOS, but I've run this in Linux.

> Is this something that degrades with the large numbers?

The concern here is memory--once you push into pagefile your processes will become extremely slow.

> Also, spawning is not context switching.

Thank you obviousman.

> That's the overhead that matters.

Why do you think you know every use case? You don't. There are tons of use cases where having to be concerned about creating and destroying threads places a large burden on the developer.

> But according to your own test, spawning in reasonable numbers will be about the same.

You didn't run my test.

Running 3000 processes is a few orders of magnitude less than running 1000000, and you don't get to determine what "reasonable" is for every application that exists.
”Taliban issues statement to tell U.S. 'Afghanistan feels your pain'” interesting.
Choosing the 1950s as a great time for air travel seems like an odd choice, the first pressurized airliners to be used widely started in the late 1960s.

Air travel in the 1950s was done in slow propeller planes like a DC-6, which were very loud, had a low service ceiling, had a low range, weren't particularly safe, and were unattainably expensive for most people to use.

The 747 was only put in to service in 1970, the 737 in 1968.
You can, but satisfactory text editors on Android can be hard to find.

No issue with a large enough EPD tablet, a BT keyboard, a good text editor, good configuration and your ability to adapt to the system (latency etc.)
So, someone will probably correct me further but:

You're still using (mostly the same) plain old LaTeX 2e with pdftex, xetex, and luatex (pdflatex, xelatex, and lualatex). Those are just 3 different engines for Knuth's original tex. As far as I know, some parts of all 3 are written in WEB (which is a language that persists mostly because Knuth's TeX is written in it).
Oh, I'm with you on a lot of things here, and I've just typeset my PhD manuscript with it, being a longtime (10 years) user.

LaTeX does not feel like a programming language. It is first and foremost designed as a macro language, which is nice for writing text, not that much for implementing algorithms.

I quite like what lualatex is doing, including a lua interpreter to add some simple code to your document, and make writing packages easier.
I admit I haven't used yet, being afraid of compatibility issues. I know a friend also uses a package to interoperate with python.

This doesn't completely solve my main gripes with LaTeX though, including the slow compilation speed (while 95% could be cached), and the bad error messages, as well as the brittleness of the programming part (I ended up typesetting my manuscript in 9pt because I forgot a comma after the previous documentclass argument).

And the adoption is slow, packages stick to the most compatible baseline.

Maybe the future really is to restrict LaTeX use to minor parts of the text, like Markdown (pandoc?). But there's still some value in having a plugin system that doesn't require additional dependencies.
Thanks for your response, I appreciate it. One thing that is a big risk to the optimum is open core companies relicensing the open source code after the project becomes popular, to prevent this some of our companies are set up as public benefit companies https://opencoreventures.com/blog/2022-11-introducing-authen...
> left a toxic pit behind

Nonsense. If google scrapes your site, your site is not affected. Where is the toxic pit, exactly?
What is the compatibility of PyPy with a typical web server deployment? I am currently looking at testing compatibility with Tornado -> SQL Alchemy -> psycopg2. It seems like the C-extensions are a common tripping point. I see the recommendation to use psycopg2cffi, but it seems that package's last release was 2019 :(

SQL Alchemy actually points to PyPy in its recommendations of things to try in ORM performance.
https://docs.sqlalchemy.org/en/20/faq/performance.html#resul...
Note that "Diagonal PenTile GRGB" is standard in smartphone/tablet OLED screens made by Samsung, which seems to be the majority of the mobile market. I think they call the pattern "diamond".
> what is HNs obsession with disabling JavaScript

I suspect it's a very vocal minority.

> Are y’all browsing the internet like this

I'm not, no. 15 years ago I would NoScript for security reasons. But I visit far less shady sites and times have changed with browser security. Never did I NoScript for philosophical reasons.
Depends on what you mean by ’wrapper’. For most AI startups it isn’t viable to train their own models. For most customer use-cases, ChatGPT interface isn’t enough. Wrappers are currently the only logical implementation of AI to production.
So, what's the problem here?
I dislike it less than the hyphen-between-every-word format.
ETH has a $223b market cap, so 1b is .45%.
The appeal of word isn't the WYSIWYG aspect. It's that... it. just. works. You want a table? There's only one way to make a table, and it works. You want to insert an image? It f*cking works. You want to format running headers a certain way? Believe it or not, it works! No weird incompatibilities between packages. No delving through the depth of 1990-era latex library code to figure out where the weird space comes from. Everything just works! And there's documentation online! Written for humans!

Trust me, writing code is not the issue with latex. I've written C++ code for embedded MCUs. I've taught python to undergrads. The pain does not even compare.
Oh wow something must have been in the air! I have been working on a very similar project lately, I think a lot of companies need this and your feature set looks great.

So it's safe to say I think this is a great idea and I wish you success with it! (And when you see the Show HN for "GitGuard" please don't think I ripped you off)
About 5 years ago now I took over the monitoring/observability team at a large company. This lead to me doing a deep dive about the space and conducting vendor evaluations.

At that time New Relic still had some features that Datadog didn't but Datadog was rapidly catching up. We chose to unify the company's monitoring onto Datadog and it's a decision I'm still happy with today. Datadog rapidly caught up to then surpassed New Relic's functionality. Their support was better as well.

I kind of felt bad for New Relic, they were obviously pioneers in the space but at some point it seems like the business squandered the strong engineering talent they had recruited. It really felt like Datadog was making a cohesive platform and New Relic was building a set of disjointed products.

I hope that by taking the company private they can make the reforms needed to turn it around.

---

Also only tangentially related but if you want a company to keep an eye on, Chronosphere (https://chronosphere.io/) has been the only vendor in the last 5 years to impress me with the stuff they're building. I get contacted about the observability space fairly frequently by both investors and startup founders looking to understand it better. Chronosphere's founders stood out in a sea of other people fighting for viability here. They really know their stuff and the product has been moving in an impressive direction. I'm not affiliated with them at all, just an observation from someone who tries to still keep an eye on the space.
The alternative is SAF, which has to be a synthetic fuel if the goal is to be honestly green. However, that requires enormous green hydrogen production anyways.
> Edit: And, when I refresh it's not dead... I don't understand this system apparently.

If enough people vouch for a dead comment it goes back to normal. That's probably what you saw.
There's a bright future in big holes.

Imagine what we can get our hands on if we could find a nice, cheap way to dig 10+ km down all over the place. The mantle is 2000+km thick. Our deepest mines are 3-4 km deep.

We could also harvest a ton of heat this way - and maybe even use it for garbage disposal. Master Of Orion 2 had the Deep Core Mines and Core Waste Dumps - maybe that's the way to go!
> I can research everything I need to know about a refrigerator before buying it, including whether it's a piece of junk or not.

Nope. The information made available is usually laughably sparse. And often you only learn about the model’s reliability when it isn’t in the market anymore. Models change faster than reliability can be assessed.
> One million single-use plastic drink bottles are purchased every minute

It's astounding how wasteful and destructive we are in the name of mild convenience.
> Just take a look at modern clothes washer agitators compared to the old ones.

Huh? Good modern clothes washers don’t have agitators. Agitators clean well, but they are terrible for clothing. A good modern front loader cleans almost as well and damages your clothing much less in the process.
> Pretty exorbitant pricing

good, clearly no one is going to start implementing IPv6 until using IPv4 begins to hurt
On the other hand, I moved from MacBook to ThinkPad and holy crap it's just so much easier to use.
There's a modern way of doing things now that's much simpler. Just use markdown, and then convert to PDF with pandoc.

Oh, right, you want to be able to comment on it in a nice way, and not everyone in the group is super familiar with git, so you can just use a self hosted overleaf for the comments. Oh, that's actually for latex, so just use markdown->latex->pdf, and now everyone can comment easily.

Oh shoot, nevermind, the latex comments aren't the original source, so the comments won't sync right. Easy, just make a custom script to make the comments as part of a git commit to the repo with the markdown, in a format that can re-apply the comments when they're pulled and synced with the latex. Sure, that will work :/.

You want easy version control of image placement too? No problem, markdown can work with css as well, so just add that into your markdown file wherever needed.

This is so much easier, right?

Right?
The "replication" does not use the same methodology and the "scientist" is asking for bitcoin to post a video of the quantum locking effect.

The existence of the market is encouraging literal scams.
> people will blame unions

I think if you join a Union and demand unreasonable benefits for the skill required for a profession, then you’re responsible for the company’s collapse too.

I don’t think I could drive a big rig, it is a skilled labor profession; so what I’m not saying is ‘anyone could do that job’, but it is a job that can be trained for in a shorter amount of time than say an xray tech in a hospital.

What blows my mind is Unions in the USA often bite hard on the hand that feeds them, when it doesn’t need to be this way. The Union should work with the board to improve profits. Why there isn’ta symbiotic relationship is so strange.
But, governments tend to intervene in utility prices somewhat often, and power companies have varying policies WRT constant pricing, so we have at least three (fairly dissimilar) possible answers here.
Burning cargo ship towed to safe place off Netherlands coast to avoid
Indeed. I view the risk as being unacceptable. If I had the choice of having to use these services or not go into business, I'd certainly opt for not going into business.

Other people's risk tolerances are different, of course, but I really hope everyone that does business with these companies understands that they are taking risk in doing so.
Burning cargo ship towed to safe place off Netherlands coast to avoid ecological disaster.

"The freighter is flying the Panamanian flag, and carried 3,783 new cars, including 498 electric vehicles, according to the company which chartered it.

The 18,500-ton cargo ship left the German port of Bremerhaven for Port Said in Egypt before heading back to Singapore, its final destination.

The cause of the fire, which first broke out overnight from Tuesday to Wednesday last, is still unknown, but one of the electric cars on board could be the cause."