skysight-inc/HackerNews huggingface dataset:
You still need to compress and contain hydrogen to get an amount of energy practicable for flight. Hydrogen, even when compressed to 700 bar only provides 1.4kWh/L [1].

Kerosene provides 10kWh/L.

A 747 uses 36k liters (36 cubic meters) kerosene for a 10 hour flight, or 360MWh. [2]

With 700bar H2, that amount of energy requires 260k liters (260 cubic meters), not counting the thicker storage vessel needed.

260 cubic meters seems tractable (assuming you can safely loft 700 bar hydrogen), although still takes an order of magnitude more space than kerosene.

Since we know how to safely loft syn fuels, and we have a fleet of aircraft that can use them, it might make more sense to go that route. It would also allow blending into the existing jet fuel supply infrastructure along with kerosene and biofuels.

1. https://www.energy.gov/eere/fuelcells/physical-hydrogen-stor...

2. https://science.howstuffworks.com/transport/flight/modern/qu...
Libjpeg does have support for it. Unfortunately, you have to have two copies of the library, one for 8 bit and one for 12. And you have to rename all the API methods in one of the libraries so you dont get name collisions. I believe that LibTIFF has a build configuration for this so that 12bit JPEG data can be encapsulated in a TIFF file.
Fun fact, Stock buybacks were largely illegal until 1982:

https://corpgov.law.harvard.edu/2020/10/23/the-dangers-of-bu....
Turing would be a better example, perhaps. See https://people.idsia.ch/~juergen/turing-oversold.html
That ignores the fact that older businesses tend to financialize to drive growth in equity value once revenue has stopped growing and older companies tend to be the most prone to disruption/failure.

Intel’s downfall can be tied back to an org structure that made up for bad gate-level architecture choices with proprietary fabrication techniques. All that customization crushed intel’s ability to compete with TSMC in foundry and the lack of architectural discipline prevented them from even coming close to fast-following QCOM SoCs or NVDA GPUs.

Keep in mind, for all the talk of Intel’s bad management and over-financialization, BK was a foundry engineer and he oversaw the worst period of decline.
It just looks like a proof of concept. They tested it in very controlled conditions. Did not see how it withstands being knocked over, dropped, covered in dust from storms. Their market is Africa. How many of the towns have road access? Will the product be damaged in transport on very rough roads? Can they be stacked in transport, and how many high (or will they be crushed)? Will adhesives fail after n temperature cycles in the blazing sun + nighttime cold? Can it be repaired by people living there?

Almost every part looks to be made from scratch. The only thing off the shelf is the pink insulation foam. Can any of this be sourced in the target markets?
Feel free to email me. I'm dealing with a death close to me and some estate related issues so I may take some time to get back to you but I will.

For what it is worth, we never saw ourselves as a replacement for the After Visit Summaries but rather an adjunct that ensured said Summaries could be understood and utilized by non-speakers or ESL patients who perhaps are not as confident in their skills.
Your OODA loop is way too long. We buy ALL the parts immediately, within 10 minutes of finding something. If they don't work, it's a loss.

On new designs, I find a part in stock, we order ALL we need for the next year, and THEN I make a footprint and put it in the design. For EVERY SINGLE PART. Starting with the IC's. It actually works quite nicely once you get used to it. Obviously, there are some losses there too - just the cost of doing business in these crazy times.
I just flashed (literally, shined UV light through the window) and reprogrammed a few EPROMs on a pair of HP 83623a signal generators yesterday to facilitate moving a module from one, where we didn't need it, to another, where we did.

Industrial equipment moves at a different pace, and in these days of 10x price jumps and "52 week" lead times, sometimes dusty relics from the 80s wind up being relevant in 2022!
Added a picture with a bunch of people. Not all of them got an emoji, so as I continued to add emojis, I wanted to pinch to zoom but that behaviour turned out to be for the emoji. Handling a tiny emoji was really add, so I’d appreciate be able to zoom in and out of the picture when I have to add more emojis :)
> This will allow us to track which installs result from which downloads to determine the answers to questions like, "Why do we see so many installs per day, but not that many downloads per day?"

What value does Mozilla see in being able to do that?
I have an extensive academic citation collection in multiple languages, Juris M is way better for my needs.

I love the fact that open source software allows this but sometimes I really wish they'd just incorporate the two.
One probably non-obvious thing is that the $100/yr ish unlimited storage tier includes everything you do as a user including shared libraries.

So if you have a group of people working together in a group library, one shared library subscription covers all of them. It doesn't take many people to make this worthwhile.

And as you say, it's a good way to support a great project. I do it even when I'm not really using the software.
Great point. Cheers.
Tired of waiting for driverless vehicles? Head to a farm
I think you might have that backwards. JPEG can be losslessly converted to JPEG XL with better compression (~20% smaller), but I haven't seen anything about going the other direction. I'm not sure how it would be possible with JPEG XL's different sized blocks and different available transforms. https://en.wikipedia.org/wiki/JPEG_XL
It wasn't a company - there was zero profit motive here - and we had received very helpful advice from them and strong support until we got close to starting a trial, at which point communication suddenly ceased and it became clear something had changed with regards to our relationship with them.
I've spoken English my whole life and still struggle to express the exact sensation I'm feeling to a doctor.
You will be happy to know at least one company started sexing chickens before they even hatch by pricking with a needle and taking a very small sample of the egg prior to it really developing. That way they don’t have to birth male chicks and avoid culling them.
Distilling still easier and more efficient than condensing water out of the air.
Whilst having a degree of sympathy with the point being made here I think that the underlying issue is mainly with Intel’s failure to establish attractive propositions in mobile and GPUs whilst they had process leadership - and these failures aren’t really as a result of low spend on R&D or Capex.
This is late-stage Firefox behavior. Like Yahoo in 2012.
https://github.com/google/h2e_technical_documentation/blob/m...
Yyy - see Microsoft starting in the late 90s...
As for the bad of hamburger menus:

"Adds an additional point of interaction from the user (click to open, then proceed to read through available options)"

The real world impact of this downside cannot be emphasized enough. People click on things they can see by several factors more (sometimes 10 times more) compared to the "clean design" approach. This is why in very large companies there's internal political battles on which links get to be placed in this prime digital real estate.

Sausage links is a weird name though. They're horizontally scroll-able menu items, which can be anything: links, icons, pills, combinations.

As for this creating an ugly scrollbar on desktop, this pattern is for about 6-8 links max, which should all horizontally fit without a scrollbar on desktop.

As for the "problem" of this not supporting longer lists of links or even hierarchical links, don't bother, because those don't work anyway. I work on very large ecommerce sites and in one case (billion+ page views across 80 countries) even a 3 tier navigation structure found only 8% of users actually using it. And the trend is downwards, as mobile traffic is now 70%. Nobody navigates beyond level 1.

Finally, some polish for the demo: scroll fading should be stronger so that people get that it is horizontally scrollable. Also, use CSS scroll snapping. This way when people give a strong swipe, it doesn't keep going when you let go, it snaps into a favorable position.
That's not really convincing. Sure the term "open" and "source" have appeared in conjunction together previously, but it was rare for it to be used as a proper noun, instead of an adjective describing a noun, and even if it was, it was OSI that populized the term.

Regardless of any historical context, in contemporary usage, "open source" has a commonly understand meaning and its what the OSI says it is. Other meanings make as much sense as pointing out that computers aren't machines, but a job title.
> My takeaway is that working hard to build quality products is more likely to be profitable than working hard to make money.

Except that it isn't.

"Manufacturing" has known limits. You need this many people to make this many things and your things sell for this much. There is growth, but the values are limited. And, if the company is dying, it is a very slow process and can still generate a remarkable amount of cash while doing so.

"Financialization" has no such limits. The sky is the limit and can do so really quickly. So, it looks great. Your gains can be close to infinite.

Unfortunately, quick and infinite can also describe your losses from "financialization".

This killed Westinghouse. It also crippled GE quite heavily. There are many other examples.
Great library - too bad it only allows reading
Yep, and that design had been presented ages ago[0] already by the Finnish geniuses who basically designed Nvidia's ray tracing tech[1] (as well as the state of the art in GANs[2]), and even implemented in some lesser-known renderers like Indigo Renderer :)

These days the most exciting research I think is in path guiding and many-light sampling techniques.

[0] https://research.nvidia.com/sites/default/files/pubs/2013-07...

[1] https://research.nvidia.com/publication/understanding-effici...

[2] https://research.nvidia.com/publication/2021-06_Alias-Free-G...
We obviously can't know, but hearing someone talk about something gives you an idea.

My impression is that Casey is quite weak (as in average), but meticulous.

Siracusa is almost certainly the one with the best understanding of theory, but hard to say how he is practically. He could be very good at what he's doing.

Marco also doesn't seem very strong in raw programming (he resisted Swift for half a decade, complains that it's hard to deal with, says that architecture is only for beginners etc) but obviously he can solve whatever problem he is faced with, even quite complex ones. And this is obviously what matters if you are an indie developer. That and product sense, which he is also very good at. He probably has the perfect skillset for an indie developer, better programming wouldn't make him any more successful.
I think I still have my WebVan baseball cap. "One of the largest dot-com flops in history" according to Wikipedia.

I also have some pets.com stuff somewhere. I don't know why I only have swag from huge failures.

If you want your startup to succeed, don't give me swag.
This reads as if innovation can simply be bought. Why should Intel be able to buy back leadership when China is trying the same without much success?
If AI is inferior, there is no need to ban it. Pick a side!
I've checked the ICs in the past and there weren't any socketing issues but I haven't had a chance to take a deeper look at the board since then. I'll give it a more honest college try based on your encouragement.
Yeah, but even if they don't take jobs as surgeons or physicians, basically literally any other job would have more net benefit to society :)
Commit often, then interactive rebase, then push to GitHub. Then code review happens, and any comments get addressed with some extra commits.

The annoying thing is that often someone will change CI for some unrelated subsystem (we're in a monorepo) and the way to fix that is "merge master into your branch". Of course I could rebase on top of master before pushing, and I do, but that doesn't work well if the CI change happens while my PR is in review. Then I have to merge master into the PR branch, since people do check branches out to review them sometimes.

Thankfully we squash PRs before merge, so it only ends up with a single commit in Master, but it does mean there's sometimes an intermediate mess.
This quote was from a 1995 interview, so two years before Apple bought out Steve's NeXT and made him the CEO.
The person who refuses to use another person's preferred pronouns is obvious dictionary definition prejudice. It is someone prejudging the proper pronouns without the relevant details from the individual they are referencing. It is almost literally the person saying "I am deciding your gender without consulting you."

What are the relevant details when choosing your own preferred pronouns? Wouldn't all the relevant details be known by the person making the decision? I don't see how that can be prejudice.
"We have to pass the bill so that you can find out what is in it."
Remember what happened when Firefox OS died? It was forked into KaiOS, which has become a superior product that actually found a market.

I will not mourn the death of Mozilla. When it collapses, may it be forked and turn into something decent by more competent leaders who don't give themselves multimillion dollar salaries and make pointless acquisitions.
But what's the downside?
There really aren't enough awards or halls of fame in our field.
Wow, looks cool, undeniably! Although for that price, they could have included a headrest...
I believe they mean free accounts can't upload moderate/restricted content but will still be able to view it.
Wow, only £300? Private insurance in the US is so much more than that. When you get care, is a portion paid by NHS and the remainder from the private company? Or maybe the existence of NHS puts healthcare costs much less than that in the US.
> One thing I've observed is Protobuf has caveats when mutated in-place (used as in-memory mutable application state) and Cap'n Proto is effectively impossible to resize objects

To clarify slightly: Encoded Protobufs cannot be mutated in-place at all. You have to parse into language-specific in-memory objects, mutate those, and then serialize again. Cap'n Proto does support in-place mutation, with the caveat that if any object changes size, it'll be moved to the end of the message, leaving behind a "hole". You can "garbage collect" the holes by copying the whole tree into a new message, which should be much less expensive overall than parsing and serializing the whole message as Protobuf would require.
I guess nothing is gripe-free these days. Sheesh.
Kaitai is a really great system, with an awesome WebIDE. At work we have just started a project to use it for astrophysics simulations and data from dark matter detectors, and one of my hobby projects is to use it to explore retro game data formats.
> We humans are superior at curation, discovery, and anticipating our needs

You speak as though advertising was for you.

The data being collected about you is used to sell you to advertisers, and your data to 3rd parties.

you see advertisements not because you are interested in a product, but because the seller of the product is interested in one of your characteristics (like your income, sex, weight, religious affiliation, price insensitivity, poor decision making skills, etc...)
Amend and force push are your friends.
From the linked bugzilla
https://bugzilla.mozilla.org/show_bug.cgi?id=1677497#c0

>One note, in case it's not already clear: The download token will be available in the telemetry environment, but all web session data that it is linked to will NOT ever be included in telemetry, it is being deliberately kept in a separate data set, and we will be limiting access to the ability to join these data sets to a small set of people.

Small set of people? Pls do tell me more
So, a solar powered dehumidifier?

At first pass, I would guess that something like this would primarily be useful in places with naturally high humidity, which aren't likely to have a shortage of water in the first place, no?

Maybe the argument is that the natural sources of water are dirty, and extracting from the air is automatically clean and safe to drink, but it still seems like it may be more resource efficient to invest in water treatment, not a fleet of dehumidifiers.
Because app has a shitload more functions than a dial. I can program my strips to do all kinds of cool stuff.

I mean, what data is going to get extracted? Your favorite color? The app that came with mine is great and I can work the controls remotely.

Might be the wrong forum to be complaining that an app is too hard for you.
That is because Linux Kernel is THE Kernel. There is no other Kernel that is relevant at all.
If you sync your library to at least one device, you'll still have all the files anyway if you stop paying - you just won't be able to sync them anymore. The metadata will all still by synced.

The dropbox/onedrive/etc. approach works, but honestly I find it easier to share files from a group library (they don't need a paid account) and keeps structure etc. there also....
> A programmer needs to be aware

This can be extrapolated to anything that causes UB. A programmer needs to be aware that what he does causes UB. You asked for a normal thing that is being done by a programmer that causes UB, and I think I gave a fair example.

I don't want to aggressively argue a point, just wondering what exactly you want to prove here. It's not like programmers cause UB intentionally or when doing some weird stuff like code golfing. No, programmers code in C++ using standard techniques and fall victim to the UB.

Another example of UB is accessing an array out of bounds. Again, you may say a programmer is expected to rationalize his code in this regard, and yet off-by-one is one of the most common categories of errors in practice.
how does this get through the MS smartscreen and authenticode checks?
Wish my slow corporate behemoth would support this, but they are the opposite of agile.

It's also gotten to the point where there doesn't exist enough stock in distribution to buy a year's worth. And I'm not talking high volume, maybe 1k/year to 50k/year. Distributors are constantly decommitting from orders, broker stock is drying up, etc
Perspectives on a Global Green New Deal [pdf]
Ask HN: Can we have a conversation on startup swag waste?
Yesterday I made a Jokr order and was handed a swag bag. It had a rag thin bandana, a tote bag, and a plastic bag dog waste holder. The tote bag has a use, but the bandana was so thin it was a waste of fabric. The dog waste holder is another problem, but also uanessacry when I don't have a dog.

I think swag is great to get, when it has a use. I they probably made a lot of bandana's and plastic bag holders that were probably thrown away. I also know there are a ton of conferences where this is also happening. This is leading to so much waste that is not controllable, but companies continue to waste money in this area. They will also shift blame to consumers on recycling when the companies are constantly producing it.

Questions:

- Why do companies continue to waste money on useless swag?

- What can be done to have companies think about the waste they are producing from swag?

Edit 1: I'm not talking about t-shirts or sweatshirts
Yeah right and one small bottle of cola is 3 servings right?

Or one bag of crisps, definitely 4 servings there...

The packaging should explain the contents, not some weird fraction of the contents that no one sticks to.
Western Megadrought to Persist, Worsen
My first flight on a plane also happened to had a passenger have a medical problem. She had passed out briefly. The pilots had that plane turned around fast and paramedics were waiting at the gate.

I'm just stunned they would still take off with a clearly injured passenger. And then not turn around after an hour into the flight!? They didn't want to land in India, but Hong Kong was only an hour away?
https://bugzilla.mozilla.org/show_bug.cgi?id=1677497
Its from a year ago
It transcends nation, culture, and language. In the future, we will measure the distance between the stars in billies.
As if there was any serious alternative that wasn't much worse.
It could be profitable if you sold carbon credits. The pH and water volume may be measured accurately on the way through, precisely identifying exactly how much CO2 is being sequestered.

I don't know how the carbon credit economy works. I would welcome enlightenment.
Couldn't you do that with a group library?
I have a bunch of SpinVox swag - including custom dolls - from before their fall from grace. Niche, I know! Contact details in my bio.
Yeah chick shredding is absolutely horrendous. At least it's quick.. I guess.
Today we see a moment when popular interest, need, capital, and talent are converging on a willingness to to try new things with a path to success. Who knows how long the window will last. We must try to advance any path that has some chance of succeeding and has a technically/commercially viable path forward.
Show HN: Goose, a service to simplify adding gitops functionality to systems
Hell, getting things to understand barrios when I lived in PR.... Yes, this address looks like it has two cities on the address. Nope, that's how it's supposed to be.

Or the hassle of trying to figure out whether a website was gonna list PR under State or Country or just not have it at all. I got really good at modifying web forms with Chrome devtools to inject Puerto Rico into the State drop-downs so I could just get shit shipped.

And for a while I didn't have any way to receive mail at the house I was renting, so I had stuff shipped to work, but they only had a rural box addr, so the addr was "Box 1234....". Anything shipping via UPS/FedEx didn't wanna touch it, so we had an alternate address for each of them (since UPS's system couldn't find one address form and FedEx couldn't find the other) and I'd have to find out who the seller was shipping with.
HN is pretty liberal in terms of the discussion
it allows to take place and the breadth of ideas
and viewpoints it allows to propagate

It really, really isn't. It's one of the more tightly moderated public communities.

I suggest browsing with showdead on to see how much crap gets silently removed from HN by the mods.

Offtopic remarks are mercilessly downvoted into oblivion by the community.

To be clear, I think the HN mods do a fantastic job. I think HN is one of the clearest examples of why strong and talented moderation is essential for high-quality discussions. Their work goes largely unheralded because they maintain a low profile, in multiple ways.
They don’t have the images, but they do have “visual derivatives”. https://www.apple.com/child-safety/pdf/CSAM_Detection_Techni...:

“The device creates a cryptographic safety voucher that encodes the match result. It also encrypts the image’s NeuralHash and a visual derivative. This voucher is uploaded to iCloud Photos along with the image.

[…]

Once more than a threshold number of matches has occurred, Apple has enough shares that the server can combine the shares it has retrieved, and reconstruct the decryption key for the ciphertexts it has collected, thereby revealing the NeuralHash and visual derivative for the known CSAM matches.”

https://www.apple.com/child-safety/pdf/Security_Threat_Model... is even clearer:

“The decrypted vouchers allow Apple servers to access a visual derivative – such as a low-resolution version – of each matching image.

These visual derivatives are then examined by human reviewers”
Ask HN: Is there a simple way to continuously backup your Google account?
I've seen a few posts about people having their Google accounts disabled. It would be absolutely devastating to me to lose my email, docs, etc.

Is there a simple backup service I can buy to back this stuff up somewhere?