skysight-inc/HackerNews huggingface dataset:
Assume monthly profit per subscriber is $30. Not sure whether that's accurate.

(2.6e6 * $30 * 12 * 5) / 100 = $4.68B.

So far there has been 154 launches to put 5600 satellites in low earth orbit. So if each satellite costs $300k, each launch vehicle and other overhead could cost at most $19.4M. (2.6e6 * $30 * 12 * 5 - 5600 * $300000) / 154.

I think it's plausible SpaceX can launch for about (or even below) that cost ballpark.

There was an article on Forbes in 2022 [0], that states hard costs for launching 50 Starlink satellites into orbit is $15M – including both the launch vehicle and the satellites.

While there are a lot of unknowns, I'd say current Starlink profitability is credible.

Disclaimer: Of course there are a lot of other costs, salaries, facilities, droneship operations, etc. SpaceX is not a public company, so there's not that much information available. This is just a rough ballpark, if that.

[0]: https://www.forbes.com/sites/johnkoetsier/2022/02/14/starlin...
There is also a big, free, fan expansion pack with its own Steam page called Downfall.
I started reading this, and the article is very approachable, but it’s flawed from almost the very beginning.

He uses the angle addition formulas to derive the Pythagorean theorem, but this derivation only works because he predefined sine and cosine as odd and even functions, which hasn’t been proven
A friendly pat on the back can improve performance in basketball
There is literary a guideline specifically about the top comment:

https://news.ycombinator.com/newsguidelines.html

> Eschew flamebait. Avoid generic tangents. Omit internet tropes.

Or how about:

> Please don't use Hacker News for political or ideological battle. That tramples curiosity.
You would be astonished how many people want to live a calm and good life, with making money as just one mean, and hence secondary, if you would come out of your capitalist bubble.
I have to say I don't really get the website either. If the author is against scraper why not serve massive dummy content that it bloats their storage? Why all this linking? Maybe it's used to build (fake) page rank credibility and sometimes a link to one of the content farm pages is referenced on other pages, so these get boosted then?
Try NoMachine. IME, performance is pretty sub-par, but if it's a once in a while thing you probably don't care that much. It's also got a "clean" and "modern" UI that would look right at home on a toddler's toy.
Back when the internet began to appear in households I had a friend who started a dial up ISP. I had a personal website hosted there. I found an adult clip and made a web page with a banner ad with a "click here to support". Honestly, I have no idea how people even found the web page. I'd get mailed $20 to $50 dollar checks every so often. I'd have to monitor the bandwidth used so my buddy wouldn't notice. I'm pretty sure I went over but I was never charged extra.
The mid to late 90s were an interesting time.
My daughter (in 5th grade) is interested in learning advanced maths, so we looked at sine and cosine.

Question: is there an easy, geometrical way to "show" that `cos(60º)=1/2` using the intuitive definition based on the trigonometric circle?
Trauma under psychedelics – protective effect of MDMA
> I think cloud hosted models will probably always be far better for most tasks

It might depend on just how good you need it to be. There are lots of use-cases where an LLM like GPT 3.5 might be "good enough" such that a better model won't be so noticeable.

Cloud models will likely have the advantage of being more cutting-edge, but running "good enough" models locally will probably be more economical.
> Insofar as an equitable compensation / patent “value” can be determined analytically on a one-off basis, you don’t need the patent system; the government can just buy out at that price, and the same goal will have been achieved.

Exactly. Ideally we wouldn't have patents, but would have a "Star Trek" luxury space communism economy. Until then, if an invention proves to be highly beneficial to society after a few years, I would entirely support governments buying out patents early. In the end, information is a public good (non-rival, non-excludable), so let's start treating it that way.
They're also making the judgement (you suck at management) from a single blog post about mental health with no other context. There just isn't enough information here to make that judgement. This is nothing short of bullying someone for talking about their mental health, I hope the author doesn't see this.
Wow, they pretty much scammed people off half a million, and they got lauded for it.

Then, two years later, one of the guys behind the scam off-ed himself. No idea if it was related to it or not, but that's too high of a price to pay for a meager amount of $$$.
While it's true, as the article says, that the frames in the Isabella Stewart Gardner museum are still left hanging empty on the walls, it leaves out that a major reason for that is that they can't be replaced with anything.

When she created the museum, Gardner stipulated that nothing could ever be added to or removed from the collection. Thus, even if they removed the empty frames from the walls, they would just be left with empty spots instead.

In order to somewhat get around this, the modern museum has built an entire annex (outside the original museum) where they can have more of a flexible collection.
While the idea of writing such wrappers is pretty nice, they still missed out. Rebasing is incredibly useful.
In fact, sine and cosine never really made sense to me, until one day, I saw an animation similar to this one: https://youtu.be/Q55T6LeTvsA?si=7fiBxFVMu67tb3NZ (without the overly dramatic soundtrack).

Before that it was just some weird function I needed to calculate angles in triangles…
> Now, the line EC is perpendicular to AB, and the line BC is perpendicular is AC, so the angle ∠BCE is the same as the angle ∠CAD which we called α.

I'm hoping that's a typo, and should be:

> Now, the line EC is perpendicular to AD, and...

(Edit: although I vaguely recall in school doing that bit as the sum of the angles around point C)
https://web.archive.org/web/20240411131046/https://vadimkrav...
> Driverless cars are here, without liability issues they would already be widespread.

In the sense that if you were allowed to run over anyone without legal consequences lots of tech enthusiasts would sign up for this experience?
Using SD cards for an OS is a really bad idea in general. You may make it work with a read only filesystem, but if you don't sooner or later you will have issues.
Apparently by taking prior art (DNS, server,user interface), and packaging it into a single "product" (DNS software optimized for specific hardware) - You've created a new thing.

INNOVATION!
US Congress is a fan of its use, even if they might not know there's a word for it
It’s designed to be intuitive, allowing users of all skill levels to quickly connect their databases and craft custom datasets. With its user-friendly interface, Flowtrail makes it effortless to display your data in meaningful ways. It doesn’t matter if you’re a seasoned data analyst or just starting out; Flowtrail offers diverse tools to discover and leverage the hidden value in your database.
That's what's been done so far [0], both on the ground and in space. As I understand it, the further your disk is from your telescope, the better. But your stick needs to be rigid enough to keep the disk exactly in its place. And a rigid stick has weight.

For Proba-3 the goal is to have the two satellites more than 100m apart. If you want to do that with a stick, your stick has to be longer than the ISS. That should tell you a thing or two about the complexity and cost of building and launching that stick.

I do have to admit I'm not exactly sure what the advantages are of having the disk further away from the telescope. I suspect it's to do with the interaction between the light and the edge of the disk, but I'm not sure.

[0] https://en.wikipedia.org/wiki/Coronagraph
Maybe the land; probably not the buildings. Not built to any kind of residential code. Not enough windows, exits, not if you chop it up into a hundred pieces. No drains; no plumbing at all in most of it. Air ducts insufficient for chopping into pieces - your 'residence' might have air enough for a million cubic meters, or probably none at all.

Folks get enthusiastic about these things periodically. It takes not much to poke holes in the ideas. Big, unpatchable holes.
Analogically, engineers should not invent cars, because that would make carters obsolete
Postgres Roles and Privileges
A follow along, tutorial style, guide to understanding how roles and privileges work in Postgres.
How to generate CSR for SSL certificate
TL;DR on how to generate the CSR for SSL Certificate:

openssl req -new -newkey rsa:2048 -nodes -keyout domain.com.key -out domain.com.csr
Black Silicon photodetector hits record-breaking 132% efficiency (2020)
Ask HN: Does anybody know how to prevent Mac from sleeping?
Hey, do you guys know what's the best way to prevent my Mac from going to sleep ? I came across a few apps like InsomniaX etc. while searching, but they all seemed overkill.

Also found this one on PH today - https://www.producthunt.com/posts/nesleep
, it's minimalistic and good, but is there anything better available ?
im assuming this is satire?
I don’t see any project history or motivation or comparison to other solutions.

Why would I use this over Koreader which:

* runs great on potatoes like K3W and Kobo touch C (and any Android or Linux system)

* has OPDS support (search and pull books from a calibre server)

* uses the same mupdf library
SD cards are not made to run an OS from. They are quite limited in read/write cycles .
South Dakotans (as opposed to South Carolinians) appreciate this because in a state dropdown you can just press S twice, instead of `south d`).
It's not an absolute rule. The rate of adoption and evolution should be taken into account. Just like some speeds for driving are safe and some are unsafe.
OneNote seems to be especially bad. I don't think there's been a day in which I've used it and not had it complain about sync errors with my Office 365 account.
RDP does not allow this
It seems like that, but they're also concerned about the crawlers that they catch in this web. So it seems like they're trying to help make crawlers better ?, or just generally curious about what systems are crawling around.
This hat is way too dirty to be white. Even if well intentioned (which is into fairy tale theory level of likelyness), the implementation is well beyond ethical.
This point hits home for me.

I often don't write about things I'm feeling because I can already hear the responses of everyone who will intentionally miss the point in order to draw attention to something else, as if I'm completely oblivious to that other issue.

Being able to express what we're feeling without having our thoughts dismissed or disregarded simply because of how we arrived in our current situation is very important for mental wellbeing.

Don't get me wrong, I do understand the point being made above, it's just doesn't seem very helpful, as you said.
For anybody else not in the know : "Contra proferentem is a legal principle that suggests when there is ambiguity in the terms of a contract, the ambiguity should be resolved against the party that drafted the contract."
You can, but it's a pain to setup: https://woshub.com/rdp-session-shadow-to-windows-10-user/
Rural Noises
There *is* intelligent life on Earth, but I leave for Texas on Monday.
Intellexa, an ad-based spyware, operates outside Israeli export control regime
Isn't the entire point of these type of websites to waste spider time/resources.

Why do they want to not do that for OpenAI?
I don't agree with the perspective taken here; I don't see any reason to think that the definition in terms of triangles is the simplest or most natural, and I suspect the author feels that way just because it's how they were first taught about trigonometrical functions.

Of course I do agree that definitions in terms of power series and differential equations are less natural and require heavier mathematical machinery.

But: the "right-angled triangle" definitions have the severe drawback of only applying to a restricted range of angles, and their relationship to those higher-tech definitions is more indirect than necessary.

Instead, I claim that the One True Definition of the trig functions is: if you start with the point (1,0) and rotate it through an angle t (anticlockwise, which is conventionally the "positive" direction in maths) about (0,0), then the point where it ends up is (cos t, sin t).

This is just as simple, and just as geometrical, as the "triangle" definition. It leads directly to the differential-equation characterization (which in turn leads easily to the power series). For angles between 0 and pi/2, it's obviously equivalent to the "triangle" definition.

Can you get the addition theorems easily from this definition? Yes, and (again) without the severe drawback of only applying when all the angles involved are between 0 and pi/2 as for the "triangle" definition.

Start with a diagram showing the points (0,0), (cos t, 0), (0, sin t), (cos t, sin t). Now rotate the whole thing through an angle u about the origin. Obviously (0,0) stays where it is. (cos t, 0) just goes to cos t times (cos u, sin u), i.e., to (cos t cos u, cos t sin u). If you turn your head through 90 degrees it becomes clear that (0, sin t) similarly goes to (- sin t cos u, sin t sin u). And of course (cos t, sin t) goes to (cos t+u, sin t+u) since we have rotated it through an angle t and then through an angle u.

And now we're done, because the "vector addition" property the original diagram had remains true after rotation, so adding (cos t cos u, cos t sin u) to (- sin t cos u, sin t sin u) has to give you (cos t+u, sin t+u). And that's exactly the addition theorems.

(That may be hard to follow with no diagrams, but I think it's easier to follow than the triangle-stacking proof would be without diagrams, and with diagrams everything is pretty transparent.)

The right-angled-triangle definitions are traditional because historically trigonometry came before coordinates. But now we have coordinates and generally learn about them before we learn trigonometry, and at that point the point-on-the-unit-circle definitions are simpler, more general, and better suited for proving other things.
IMO Meta doesn't give a damn about the actual problem, they only care about their perceived image and want to be seen attempting to be doing something but that doesn't address the real problem. Social media is a cancer on culture and society and more AI won't solve any of that, just make it worse in the long run.
Also, bought a CD burner when they were about $500. Bootleg live CDs of your favorite band were $30+. So I'd do some digging and find some live MP3 and and sell CDs to my friends for $15. There was a narrow window of time to do this before the technology became more common. Does that count as making money online?
Yup, that's my impression as well. He's just nice to let OpenAI they have a problem. Usually this should be rewarded with a nice "hey, u guys have a bug" bounty because not long time ago some VP from OpenAI was lamenting that training their AI is, and it's his direct quote, "eye watering" cost (the order was millions of $$ per second).
Show HN: AI assistant powered by Groq to generate authorization models
Hi I'm Karan, one of the maintainers of Permify (https://github.com/Permify/permify), an open source authorization service to build scalable authorization systems.

I want to share with you that we've built an AI assistant to help modeling your desired authorization logic! You can basically describe your authorization logic in Permify AI and it will generate the respective model and semantics accordingly. Think of it like ChatGPT for authorization modeling/policy generation.

Here's the project if you would like to play with it: https://ai.permify.co/.

Brief backstory:

Since authorization is generally a domain specific issue use cases vary widely - roles, relationships, attributes, hierarchies between business units, contextual permissions, etc.

To address this, we're offering a domain specific language that we built purely using golang to help model authorization logic programmatically. You can see what it looks like with sample examples in our playground: https://play.permify.co/

Although our domain specific language helps our users significantly, the general idea of policy generation is hard challenging if you have complex authorization logic and versatile permission requirements. Additionally, the flexibility of our modeling language allows for achieving the same policy/permissions through various approaches. But creating the best possible policy is crucial for several reasons including the performance of access checks, the readability of the authorization logic, visibility, and achieving least privilege, etc.

When we tallied up all those reasons, it hit us: using AI could really smooth out the policy generation process. It could not only reduce the engineering effort but also yield the best possible results. That's why we integrated Groq to make to create Permify AI!

Would love to get your feedback on this!
Sorry, missed the "PGP encryption key". But still:

- I used to use `pass`, a password manager based on GPG. That needed the encryption key.

- Sharing of confidential data with coworkers at more than one job.

- Future-proofing: Even though I might not be using an encryption key now, creating all three (encryption, signing, authentication) is a common flow when using GnuPG cards, and then I do want to sync all three to the key server for convenience (so that I can use them at a different machine, for example) without broadcasting to the world "hey, email me encrypted stuff to keyid 0xABCD1234!".
And is prestigious for its business school… it’s basically the prototypical corporate training ground
Can the moral billionaire please stand up?
They want to get enough attention to get acquired. Meanwhile I’m sure they believe their own hype to some extent, but it’s very easy to delude yourself when billions of dollars are on the line.
Theoretically I agree completely. However in practice, analytically figuring out a dollar amount that isn't over or under paying seems nearly impossible. I fear that the gov would be buying out a lot of useless patents. That would also create an even bigger incentive to get BS patents through, because you don't even have to prove the value in the market, you just gotta convince a bureaucrat that it could be beneficial to humanity.
For me, having history in a structured sqlite database is the killer feature. You can build useful reports ("histogram of run times for all pytest calls from the current directory that exited zero") in a single sql query.

Sync is oversold as a feature, never used it.
It's surprising that it was left out. Ie, the workaround makes sense, but this is a peripheral that is sometimes built into MCUs themselves. For example, most (all?) STM32s include an RTC... with the caveat that if you are using them for canonical use cases, you will need external hardware in the form of a dedicated 32kHz oscillator, and possibly a battery.

For a lot of micro-controller timing uses, they aren't required; for example, hardware timers based on the primary clock source, or the Cortex-M systick, but for maintaining accurate dates and times over long periods, the RTC is the right tool. It can also output the dates and times in a convenient format as well, as long as you find named register fields convenient!
Isn’t the legality of web scraping still..disputed?

There’s been a few projects I’ve wanted to work on involving scraping, but the idea that the entire thing could be shut down with legal threats seems to make some of the ideas infeasible.

It’s strange that OpenAI has created a ~$80B company (or whatever it is) using data gathered via scraping and as far as I’m aware there haven’t been any legal threats.

Was there some law that was passed that makes all web scraping legal or something?
I’m not sure if I’m parsing your sentence right but surely you can’t be implying that autonomous driving isn’t possible or that it is some undermined time away?

You can come down to SF and take a waymo today. It works great.
What am I looking at?

I'd say go ahead and inject it with digestive enzymes and then report findings.
> I'm surprised Huawei used Intel with management engine after China banned it across all government machines. The Kirin 9000s might well have been a better choice. Who are they selling this to exactly, and how did they get access to intel parts?

That's why I am confused about all the hate for Huawei, bc if you go down the spyware + manufacturing rabbit hole, it doesnt take long until you start to observe some inconsistencies in the narrative.
Yet plenty of murders go unsolved forever. Sometimes the secret ingredient is a big pile of luck I guess.
Binary embeddings will require additional re-rankings, but will be fun to test.

I’ve made an npm package of transformers.js v3, which I should update (not sure if I include this yet).

Mostly, I’ve had to have a fork so it runs on bun. V3 when released will support bun just fine. Although the webgpu won’t work, but that’s optional.

[edit: dm if you want to use it, I don’t want to promote a fork]
iOS 17 has fixed this somewhat, but searching for an app had gotten quite slow in the last few releases.
It seems more likely that Rembrandt defied some of the standard art style at the time and is remembered for his innovation. For example, his paintings look quite realistic but tend to exhibit unusually dramatic lighting. Perhaps nobody did that before him, or not with the same quality, or only in a small number of artworks.
> So many hours of each day are lived through our portable, glowing screens, but the Internet isn’t even fun anymore.

I'm in the process of "de-apping" my entertainment: I replaced TV/Streaming with a stack of DVD's and hard drives, and Music apps with cassette tapes.

I'm thinking there's something to the "tactile experience" that vinyl lovers want from their collection, but I just don't have that much room...

Things like Taxis/Maps/Work will be impossible to remove from my smartphone, but this way at least my free time is fully mine again
It feels like the problem here is less about the solar industry and more about the construction and skilled trades generally. Everything involving an electrician / electrical contractor has gone way up in the last 10-15 years, along with other things. So whatever savings are being saved on materials are just being eaten up by rising labour costs.

That and government incentive programs for home energy efficiency seems to have just inflated prices and stimulated demand to make the installation costs worse. Quotes I've gotten on heat pumps for example have been ridiculous, and solar much the same.

Hate to say it, but a recession might be what "fixes" this. Not that I want to deprive trades people of a good livelihood, but it feels like the end consumer is getting screwed right now.