skysight-inc/HackerNews huggingface dataset:
Anyone recognize all the equations? I only recognize a few specifically and can sort of guess the general area of some of the rest.

From left to right then top to bottom:

1. No idea. Based on the E sub λ, the use of Planck's and Boltzmann's constants, and the e^(hc/λkt)-1 I'd guess its the energy of something at wavelength λ and temperature t. I don't recall ever seeing energy have a factor of 1/λ^5 before college was over 40 years ago so I might have forgotten.

2. Momentum change required to change the speed of a mass by Δv?

3. No idea on the one for dt/dλ. Nothing from the left appears explicitly on the right.

On to the second row.

4. Pythagorean theorem.

5. No idea.

Next row

6. The Drake equation.

7. Definition of average velocity.

Next row.

8. Position of free falling object in a 1 g uniform gravitational field in a vacuum.

Next row.

9. Something thermodynamic.

10. Newton's law of gravity.

11. Looks like half of this is blocked by her head, but given that it is next to Newton's law of gravity, and has 8 Pi G in it which also appears in general relativity a lot, and that it has on the right side the ratio of jerk to acceleration (assuming a is acceleration), I'm going to guess something to do with relativistic gravity.

Next row.

12. No idea.

13. The most famous equation in the world.

14. Newton's second law.

15. Too much is cut off.

Final row.

16. Seems to be calculating the ratio of successive terms of some sequence. Partly cut off but can see Planck and Boltzmann constants so guessing we are back at thermodynamics. I'll go out on a limb and guess it has something do with entropy.

16. Too much is cut off.
To your last point, I’ve always understood their sentiment to be along the lines of:

- differentially rewarding those customers willing to put in higher levels of effort

- inflating attendees’ sense of the purchase’s value, since they’ve sunk work into acquiring the right to attend/buy

- adding a sense of agency: you “could have” gotten the tickets if you’d just showed up earlier, you have only yourself to blame

- discouraging the sense that the lottery is “rigged” or inundated with scalpers

- for that matter, offering some form of social proof that “other people” (rather than bots) are buying the tickets: taking the amount of time that people take to check out, that sort of thing

- which also offers tangible social proof of the promotion’s desirability: “1,000 people in line around the block” counts for more buzz than “5% chance of being able to spend money on this thing”

- potentially more reliable gauge of the true level of demand, so we can get the right size of venue next time: a lottery rewards trying to game your number of entries, and, depending how it’s constructed, may encourage people to enter on a lark even if they don’t intend to buy
You literally live under desantis, the most brazenly autocratic governor in the US. GTFO.
What Is Old Is New Again in Tech?
Since a few years ago, especially as layoffs started at big name companies, there have been a massive investment in funding and talent into modernizing traditional industries. This effect will be felt by IT departments that built in-house software and small product or consulting shops.
> That it wasn't even now fills me with horror and I shudder to think about it. The crew's final moments must have been sheer terror.

Having been in a situation where I thought I was about to die (head-on collision on an icy country highway), that wasn't my experience. When I saw the other car in my lane I was hit with a wall of adrenaline; I experienced the "bullet time" that you see sometimes in movies, where tiiime slooowwws doooowwwwnnn; and I felt like I was processing things calmly and rationally, thinking about what they tell you to do in that situation in driver's training, and even when it became clear that there was nothing I could do to avoid the oncoming car, I simply thought, "I wonder what it's like to die?"

(Now having been in a few more accidents, and experiencing "crumple zones", I'd probably just be thinking about whether the car would be totaled.)

The professional astronauts will have been put through loads of training for all kinds of contingencies; there's a very good chance they had similar responses, and a decent chance that McAuliffe did too.
Co-Dfns v5.7.0
Haha right, I paused for a second as I couldn't remember the exact word and went with power. Thanks for the correction and the explanation.
What if I told you that non - competes aren't a thing in Germany. (And a big part in other parts of US)
1. this is an AWESOME art idea
2. even more awesome is the single comment to hoffm's first post about this site a few months ago (https://news.ycombinator.com/item?id=30700024) and I hope HN keeps it that way
I checked a bad/oops/“no more computer” month from my early 90’s youth and it would be about $250 today (1 month).
Why haven't they caught up to the west yet? Why are they doing it wrong?
I'm not sure AI helps in the area where bootcampers struggle to transition to real work.

That is, most paying work in programming is working on some code that other people wrote who often are distant open source practitioners, people who aren't working on your team anymore, people who are on your team who might be busy and not really wanting to talk about it or who might not really understand how and why the code works.

Ideally you would completely understand what the code does, practically that's impossible (see https://en.wikipedia.org/wiki/Halting_problem, https://en.wikipedia.org/wiki/Collatz_conjecture) and you're going to have to work hard to get enough understanding of the code, whatever it is, so you can make what management thinks is a "small" change surgically.

AI is better than humans at recall but worse are reasoning and generalization. I've found Copilot is brilliant at explaining the meaning of repetitive but weird code snippets (like functions inserted by the Babel transpiler) that are all over its training data.

I've been asking questions of Copilot for a recent project, I think it is helpful but not revolutionary. It can be better than Stackoverflow.
You still haven't explained your point.
I mean, she would make 3x more than that just being a software engineering cog in the machine. To me, a salary of $200k for this position looks like donating $400k a year to it. Plus your time. That seems pretty generous to me.
Like the other commenter I also had a very hard time connecting your main landing page to that Telegram feature. I even checked if you accidentally posted the wrong url.

A lot of landing pages (especially built by technical people) have the same issue, they list a bunch of "features" but don't talk about the actual problem that is being solved.
I don't feel the same. The last decade or so has seen an explosion of women show interest in joining the tech community. Ratio's on teams I've been on has greatly increased throughout my career. I've been on several teams now where women have outnumbered men. In my experience, the ratio is now flipped when you look at the team as a whole (XFN, etc). I may be biased though as I've only worked at "premier" large tech companies and they are probably in a better position to do DEI at scale.

That being said, true senior roles in engineering (VP+) is still very male dominated. Part of that is the pipeline catching up and part of is that I see women leave engineering for other roles more often. For example I would say, in my experience, I've seen more women have an interest and engage in transitions to PM, designer, etc.
Getting Started with Medley Interlisp
A short introduction to the Medley Interlisp environment. I've been interested in Medley and finally had some time to get the basics working.
Well-written, interesting post. The author shows how you can run a command in Nix that both installs specific dependencies and also runs the command.
Do you have any citations to back up this “fact”?
TUAW Returns as a Gross, Zombie AI-Generated Garbage Site
A CD audio frame is defined as exactly 1/75th of a second (588 samples per channel). I don't know why the article waffles around with these poor wordings (emphasis mine):

> These albums all had a pregap of either 32 or 33 “frames,” with a frame representing a length of about 1/75th of a second, per Hydrogen Audio’s Wiki.

> To offer a small correction to the original question now that we know we’re talking about 74 frames per second rather than 60 or 100

It's needlessly confusing and undermines my confidence of the entire article.
You can add your own submeter after the utility meter, if you want to monitor your power usage. It’s more expensive than utilizing the utility meter, but sometimes you don’t have a choice.

Here’s a leviton kit with a 120/240v 200a meter and two CTs:

https://www.homedepot.com/p/Leviton-Series-1000-Single-Phase...

Equipped with both isolated pulse output and RS-485 serial port (modbus native) standard for easy interface with most AMR and BAS systems
Have you found anything that makes everyone happy and productive?

I sometimes wonder if we'll replace traditional design patterns, especially OOP, with new patterns, that are neither OOP or FP, but perhaps a different paradigm (e.g. how Prolog is wildly different from C++).
Apple, Nvidia, and Microsoft will race to $4T market caps this year
> can deliver it? This article is specifically about the maiden flight of Ariane 6, which was successful. It's already delivered.

It's not commercially viable. That means it has no room to organically drive economies of scale and thus learning curves, which has downstream effects on evertyhing from recruiting to supplier negotiations. Europe has a launch vehicile. It does not have a platform. Virtually everything in Ariane 6 will have to be thrown out to be relevant in a modern, reusable design.

Put another way, SLS didn't prepare Boeing and Lockheed Martin one iota for the modern launch industry. If anything, it drove ambitious people away from them.
I was a lifeguard for a decade bud, I’ve seen it all.

Maybe you should stop being a dick.
That would require speed limiters to work a lot better than they do.

Also, the speed limit isn't 55 in the US. It varies between 50 and 80 depending on your state and region.
Using memes as marketing material was more questionable than the design (which I agree is equally uninspiring).
So it's.. a book?
Something weird is going on over there, loads of their repos are disappearing, including their Terraform provider, CLI, etc.

e: terraform is back!
Too bad, you were interviewing a warehouse worker were they don't have to think and just follow what the screens says.
Location: Europe
Remote: Yes
Willing to relocate: Possibly
Technologies: Java (Spring, Swing, JavaFX), JavaScript (Node, React, D3), various SQL & NoSQL datastores, ETL platforms, UI/UX design tools, AI/LLM tools, Git, Docker, AWS, etc.
Résumé/CV: https://gtanev.github.io/cv/2024.pdf
Email: georgejazzt@gmail.com

I'm a versatile software engineer with a master's degree in computer science and 13+ years of industry experience. I have designed, developed, and deployed software solutions and services, from web and desktop applications to data pipelines and data visualizations. I have worked for organizations such as MIT, Triplebyte, and Rollbar, while some of my scientific research has been published by IEEE, OEIS, and Springer. I'm mainly interested in remote consulting work but open to other arrangements.
I wouldn't downplay the Starlink Ukraine thing the way you're doing. But if you're still a Musk apologist after all these years, there's nothing I can say to convince you.

For many of us, the whole diver pedophilia accusation was enough, and that pales in comparison to everything that came after.
It likely uses ZigBee Smart Energy Public Profile, which while it uses ZigBee, doesn't work with generic ZigBee receivers.

https://www.home-assistant.io/docs/energy/electricity-grid/#...

And here's some details on the specs if you want to dig in and see if it matches what you are seeing

https://zigbeealliance.org/wp-content/uploads/2019/11/docs-0...
That's my takeaway after a lot of reading about this.

The seal performed exactly as it was specified to. The spec was that below certain temperatures it wasn't guaranteed to perform as a seal, and that's exactly how it performed.

The issue was that some level of management was alerted that they were operating outside of the spec, and they gambled that it didn't matter.
"We heard there wasn't enough buzzwords in the software dev world, so we decided to import some buzzwords from other industries..."
I don't think any emergency medical helicopters in the Western US still have cylinders. They switched to turbine engine models years ago. But of course your general point about engine cooling still applies.
The outage us website says "CenterPoint Energy’s primary outage management system is currently offline. They are currently only able to provide the number of customers out across their entire service territory."
Many repos have disappeared, including:
* https://github.com/confluentinc/confluent-kafka-python
* https://github.com/confluentinc/terraform-provider-confluent
* https://github.com/confluentinc/cp-ansible
* https://github.com/confluentinc/cli
Just want to note that Itron has several models of residential electrical meters and they have the different capabilities.
all of the suspects are eerily quiet right now.....
Related/source:

OpenAI board will not have Microsoft and Apple as observers

https://news.ycombinator.com/item?id=40923895
> I really was hoping that tailwind was a fad which died but like everything JavaScript it's here to stay sadly

I feel with Tailwind it's worse somehow.

At least heavy javascript frameworks are commonly ridiculed by back-end or full-stack developers here on HackerNews; but with Tailwind, they embraced it just as firmly as front-end developers have. It is common to hear from back-end or full-stack dev that all they need is just jQuery or plain vanilla; but far more rare to hear same sentiment expressed about plain old (or rather plain new) CSS.
Not speaking to your comment specifically, but adding context to the thread: idempotence would mean having the same result, regardless of whether you run something once, twice, or 10 times, over the same input set. Idempotence requires but goes beyond determinism, as it also accounts for any externalities and side effects.

For example, let’s consider a function that accepts a string as an argument and then writes that string to disk. We can consider the disk state as a side effect of the function.

The function itself is perfectly deterministic (output string is a predictable and consistent function of input string), but depending on the implementation of side effects it may not be idempotent. If, for example, this function room simply added the output to a file “output.txt”, this file would grow with every incantation, which is not idempotent. If instead we overwrote the output file so that it reflects only the singular output of the previous run, then the side effects would also be deterministic, that would be idempotent.

At a pedantic level you could redefine your scope of deterministic to not just include outputs, but also include the external state and side effects, but for practical purposes the above distinction is generally how deterministic and idempotent would be applied in practice in computing. I cannot speak to the math-centric view, if there is a different definition there.
Another thing I've always wondered, why does it seem that all animals innately know how to swim, even young ones?

Maybe it is just that most have 4 legs and that helps, but I'd guess monkeys know how to swim too. Not sure. I mean even snakes know how to swim haha.

What makes people so bad at swimming? Our big heads?
I mean, checking for a USCG seal on a float takes about 3 seconds.

And the rules are mostly, don’t run, don’t dunk someone else.
> The alternative is dying a natural death of old age. This is apart of the human experience.

This seems almost comically lemming-like. Fear of missing out . . . on dying?

> Getting frozen and brought back in the distant future, even if we assume you'll be in great health, means all your friends and family are gone.

(Assuming none of your friends and family were also frozen.) But more importantly, I wouldn't suggest that people should aspire to death because of losing all their friends and family. If starting over (in what's likely an unfamiliar society and culture) is all one's got, that's still something.

Mainly I find it grotesque that it might be a way to slip past death, but only for rich people. But I can't bring myself to suggest that it would necessarily be a better universe if they took the normal death route instead.
This dovetails with my central critique, which is that the current state of feminism, in my opinion, tends to insidiously subscribe to the tenets of the “late stage capitalism” that many self-proclaimed x-wave feminists (again, in my experience) claim to denounce, as it is oriented around viewing people first and foremost as economic agents. Yes, individual income affords freedoms to both men and women, which is not to be discounted. But then you hear criticisms of women such as your wife, essentially demeaning them for not striving to be the fittest individual economic agents possible. As if being an AE for Yelp is the pinnacle of the human experience.

Again, by no means a black & white issue. I have simply have a distaste for such an individualist philosophy and fear it inevitably leads to an “us v. them” mentality.
El Paso is at ~3800' elevation. It should reach 98F-100F for the next week. That's still only like 3800', right?
The President Ordered Board to Probe Massive Russian Cyberattack. It Never Did
In the good news column, California has a long history of being a thought leader on climate law and policy. This goes back at least to the 1960s and even further if you count them hashing out water law and being the birthplace of many patents related to water development.

So maybe someone there will do something and solutions will result.

Perhaps they could embrace passive solar design as one element of a solution package instead of running the AC more, thereby making the problem worse.
I think that companies think they can make $X with 10 engineers, but > $2X with 20 engineers. Thus, allowing more people to be comfortable as a software engineer increases the amount of money they can make.

Right now, with 6% interest rates? Nobody wants to make money that badly. But it won't be that way forever.
The solution to what? There's literally no problem that needs solving here. It's easy to accept cards and also easy to accept cash. Neither is particularly expensive or hard to deal with.

If you really want to accept just one and not the other, that's fine, too. If you occasionally get a confused customer who accidentally consumes your services and then only has cash to pay, that's not a big deal of course.

And the reverse is also no big deal -- if you don't accept cards, and the customer don't have cash, you just point them at the nearest ATM (often in the same store, since this is a common way to avoid credit card merchant fees)

Either way is just not that big a deal.
I just finished "The Undoing Project" - about Kahneman and Tversky. It covers quite a lot of territory, but the title is about mentally 'Undoing' disasters.

Generally speaking, people pick a proximate human action or inaction as the keystone for preventing the problem.

In the book, they give the example of going back in time to kill Hitler - but people often don't decide to go back in time to buy Adolf's art - and then one of them suggests that even something as small as another sperm or no sperm 'winning' that particular race would disrupt history just as well.

It is much more satisfying to think about killing Hitler than it is to think about throwing a rock at his parent's window.

---

It is much more satisfying to think about NASA administrators taking the warnings seriously than it is to think about all the ways the culture and incentives were messed up. You can see a particular decision that was WRONG.

Finding fault with a person is a shortcut to mental satisfaction, but it will only at best fix one problem, and at worst will find the person who 'rolled the dice' wrong, or who picked the wrong lottery numbers. That is, you can find a person who was standing next to the cause of the problem, but any other person in that same spot would have the same odds of causing the same problem.

---

I've also been thinking about learning organizations - any org that wants to accomplish really big things has to be able to learn.

I'd love to hear of any personal experience of contracts that allow for learning. I think it's possible, but usually discouraged because contracts are written defensively, and learning involves a great deal of trust.

Its very clear in this case that NASA culture was deeply cynical and brittle. As a government organization they felt they could not show any failure or waste, and this must certainly have wormed into their group and personal psychology.

In contrast, SpaceX has demonstrated what a learning organization looks like - it looks like public failure. I emphasize IT LOOKS LIKE public failure. Learning means not being embarrassed about test rockets blowing up spectacularly. It means that you collect your data and improve, and try again.

To be sure, this would not work as well (or at all?) with a publicly traded company, and it certainly would not work with a government organization.
> Flacon 9 could be flying for free, but if you could lose access to it any time, it is like it does not exist

The point is Ariane 6 enables nothing new. If SpaceX blocks Europe for some reason, with or without Ariane 6, Europe isn't going to have a LEO constellation. Keeping Ariane 5 (5ME [1]) and developing a reusable platform would have been a smarter use of resources. (It aso wasn't particularly daring, either, over the last decade.) Instead, the ESA gets stuck with SLS but for Brussels.

[1] https://en.wikipedia.org/wiki/Ariane_5#Ariane_5_ME
Thanks, I need to fix that.

It is primarily a knowledge management tool with a ton of integrations to get data in, and also get it out easily, has powerful search etc.
This is awesome. Here are a couple bits of feedback:

- It took me a while to find the Metadata tab to edit a request's name, I guess because I don't think of the name and description as metadata (even if in a technical sense they are, relative to the request config). My inclination would be to make this the first tab and rename it to Info.

- I somehow managed to save two requests into the same file with no warning/confirmation from the UI.

- When using the up/down arrows to navigate between requests in a collection, I found it counterintuitive to have to hit Enter to actually select the request.
More discussion: https://news.ycombinator.com/item?id=40722394
This is interesting to me, because it runs so counter to my own experience with young/early career developers. I run into more female devs close to my own age than younger (relative to male developers specifically).
It's been a change in the past 10 years but I would say women are still systemically under-compensated, under-levelled, and encouraged to move into less prestigious roles like product, design, etc. The perception that women are better at "soft skills" means that we get pushed out of technical tracks into coordinating work, managing people, and sometimes just straight up babysitting male devs. Those career paths lead to lower lifetime comp and less "impressive" titles.
I actually prefer Marx’s razor over Hanlon’s: “Never attribute to stupidity that which is adequately explained by class-interest.”
Yeah that's 100% my problem. I'll work on it. I really appreciate the feedback.