skysight-inc/HackerNews huggingface dataset:
Frequency and phase difference are indicators of grid balance.

Grid itself can't store energy, the generation and consumption needs to be in balance.

If transmission balance goes out of whack more electrons want to flow to specific places and will always try to take the path of least resistance.

Those paths (as in transmission lines) have their current capacity measured in Amps and when it gets too much their protective equipment in the for of active or passive circuit breakers will take them offline (trip) therefore moving the current down next best paths and further increasing the likelihood of trips.

Voltage is regulated by changing the windings of transformers in AC-AC systems or by transistors/thyristors in DC coupled networks.

Frequency has usually been regulated by spinning mass, a steam powered generator has a pretty large inertia and when it slows down there is a governor or other control mechanism to add energy to the generator via opening steam valves and maybe adding fuel. If speed goes too high it is also reduced.

For large load changes there are further compensatory mechanisms. Like heavy industrial plants measure grid frequency and when it falls below lets say 49.9Hz then they will immediately trip themselves offline and shed a huge amount of load from the grid. They get paid for this.
I've just tried it, and it's pretty bad, without training at least.

My rectangle is recognized as a caret, my zigzag as curly bracket.

And it doesn't support drawing a shape in two strokes, like the arrow for example.
Supported by the full force of many of the most powerful governments.
10% is not a small fraction
While I love Love Hulténs creations I think the article (and headline) does not emphasize enough the origin of these ferrofluid visualizers:
https://www.burnslap.me/26
> I'm not sure that they would like their pay being docked when the profit is negative. Or having to help repay creditors in a bankruptcy.

Based on executive compensation vs company profits or shareholder value, apparently that doesn't need to be an issue!
The refresh power alone must be 5-10W right?
I highly recommend reading the book "So Good They Can't Ignore You".

A perfect career is very rarely something you can will into existence. It's more like a series of very small stepping stones. Certain stones will move you towards autonomy, flexibility, etc.

I generally recommend thinking about your day-to-day dream life (how much expendable income? living in nature? vacations? etc.) and then strategizing some paths to get there.
Orbital kinetic impactor weapons - a quiver of giant heavy rocks - would be an extremely valid reason for a extra spectacularly big launch.

I'm not sure why x37b would be the ship for it, other than that it's proven technology with good manuverability. Feels like most any old satellite full of rocks could do though.

Ran into this next bug future article talking about what a ridiculous death-weapon Starship could be. https://www.nextbigfuture.com/2023/11/future-us-hypersonic-b...
Analytical fourier analysis is needed for many other fields of math though. For example in statistics it's very central for dealing with density functions. I'd guess in many fields of physics it's also very crucial.

But for a lot of fields you just need the DFT and the calculus stuff can be mostly a distraction. How I finally figured out FT is something like the infinitesimal limit of DFT.
I've given up on these online learning media. Back to textbooks. The difference is like night and day.

Are there people who think this is an "either/or" choice, as opposed to a "use both" thing?? I ask, because it's pretty well established that learning is enhanced by use of multiple media types and it seems self-evident to me that books and videos are complementary.
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I like the phrase "serendipity is not a strategy", it gets to my biggest complaint about the arguments for going back to the office. Your shitty open plan office was never MIT Building 20 before the pandemic, and it's not going to become a womb of creativity after the pandemic just because you want it to be so. The way I know that is because you have to threaten people to come back to it, if it was special at all they'd come back on their own.
> To my mind, if the textbook was actually excellent then that would be 80%+. We're nowhere near there. I think there is LOT of room for improvement

I think you overestimate the capabilities of students entering university (even 20 years ago), and underestimate how poor high schools can be in preparing said students.

I went to a mediocre university. A 50-80% drop out rate was there for both physics and EE - I don't know how it compares to the other engineering. And I did not even consider it challenging. Almost all the classes were a breeze for someone like me who was well prepared going in. At least in that EE department, the teachers were very dedicated to teaching. They would allocate 3-9 hours a week for office hours, and the pace they taught as was slow (probably only covered 70-80% of the material that is covered in a top university).

Students were given lots of chances.

The reasons they drop out are:

- Poor preparation at the high school level

- Poor discipline. A lot of students didn't transition well to independence, and didn't have an authority figure (e.g. parent) controlling their schedule.

- Realizing too late what it means when courses are built on top of other courses. Thus you'd have people getting an A in Calculus I, but almost failing Calculus III because they didn't realize they needed Calculus I beyond the course.

- In high school you can get far with a cursory understanding of the material. At university, you could get a B, or even an A, with that approach for introductory courses, but that approach will start trending towards an F in junior/senior level courses.

Sure, I agree with you that pedagogy can be improved, but I expect that 80% would at best become 60% if all you focus on is pedagogy.
I learned about DNA transcription and translation while learning about mRNA vaccines in 2020. Here's how I explained the process to myself:

1) DNA = source code on disk

2) RNA polymerase = disk read head

3) RNA = source code / functions loaded to memory

4) Ribosome = JIT compiler

5) Proteins = small, single purpose executables (like unix commands)

6) Proteins once outside the cell = execution

If you think of the body as the hardware, then yes, there is some merit to thinking of DNA as infrastructure as code, operating system and application software.
I actually love when I'm given a time limit for a task. It enables me to engage my prioritization skills more effectively.
Wouldn't it be hilarious if some ASML/TSMC engineers used Canva internally? I bet it happens in some corner.
Yeah but then you can just underdeclare until you're willing to sell.
The performance jumps that Nvidia has had in a fairly short amount of time is impressive, but I can't help but feel like there is a real need for another player in this space. Hopefully AMD can challenge this supremacy soon.
The H200 GPU die is the same as the H100, but its using a full set of faster 24GB memory stacks:

https://www.anandtech.com/show/21136/nvidia-at-sc23-h200-acc...

This is an H100 141GB, not new silicon like the Nvidia page might lead one to believe.
Agreed. The retroactive revenue cost was illegal, so it wouldn't have gotten past the courts. Unity execs probably thought devs were more locked into their platform than they actually are, so it wouldn't be challenged.
Aliyah
Have you ever looked at a career in medicine or national defense? If your job is actually important to the functioning of modern civilization then you should expect sacrifices. If your job is just a cash grab and nothing is impacted whether you do your job or not then I suggest you re-evaluate what's important in your life.
https://www.netzfrequenz.info/allgemein/aufteilung-des-synch...
Phoenix framework on elixir does come close to this. Designed by people with a background in ruby and rails, and has much of the same design philosophy.

That said, there are areas where Phoenix can't match rails, such as having access to a large developer community and a large existing base of libraries.
I've looked at property taxes in different states and some states have a system where tax appraisals are roughly based on actual fair market value, possibly with adjustments which may be distorting (Prop 13, for instance), and those will usually take a completed sale price as evidence of fair market value.

Other states have systems where tax appraisal is routinely 10% of fair market value, and there's some justification for that that never made sense to me. Typically the published tax rates are then much higher than in states with fair market value appraisals. Tax rates as a % of actual market value tend to be roughly similar across states though.
I think it's fair to target the board with a large amount of blame as well - but as CEO it's your responsibility... if the decision is going to torpedo the company then refuse to carry it out or leave.
Trey Ratcliff's Photo Critique GPT
gonna give it a try today, been wondering how come i never came across anything like that actually (been using the different clients tools)
What? Is your argument basically "you can't have problems because other people have problems too"?

My partner is a nurse. Of course she can't work from home. Her job is literally touching people, putting things in them and taking things out.

They're not making her go to the hospital just to fuck with her.

My job, on the other hand, does not involve physical contact. In fact, I don't even need to leave home, as demonstrated by years of working at home. I deliver value at home so I get paid for it. It's as simple as that really. It's completely irrelevant how other people deliver their value.
You are right of course, every scientific paper, even peer reviewed, even published in the "best" journals, can be total BS.

I thought about just analyzing the conclusions. And to pick out whether they write "one might draw the conclusion" or "we have proven that...."
I think that could be useful, although I am aware that in reality they might still have proven nothing.
Do you have possibilities to send invites now? If so, fire one over to lobsters@sent.com
It's not that much energy anyway. 1kwh is about 3.6 megajoule. 2200 times 9 divided by 3.6 is about 5.5mwh. This is obviously not intended as a battery but more as a very low latency control mechanism to control frequencies and voltages. You'd only be able to use it for very short bursts of energy probably in the order of a few seconds or minutes.

You'd use something like this while bringing online alternative sources of energy, which takes time. Of course a grid battery probably wouldn't need this as it would be similarly quick to come online. Which raises the question why they are going for synchronous condensers instead of grid battery. One doesn't exclude the other of course.
I don't think it's really about either of those things all the time (although I'm sure it's all sorts of things at different times for different people).

From my experience with my wife, I think it was much more practical.

Really for her I think it was mostly like "I want to take this seriously and am going to be wearing this ring (or displaying something) all the time and so want to be sure I know what it is and that it's durable."

She doesn't really wear jewelry at all except for her wedding and engagement ring, so she just hadn't thought about engagement rings or jewelry very much period. A diamond was a known quantity, something she could trust, something neutral in color, durable, and so forth.

The metal artist that we went to really liked moissanite but at the time it was the first we had heard of it. At the time synthetic diamonds were more something on the horizon than something you could actually buy.

I think if she had known about moissanite earlier and had time to get familiar with it she probably would have been happy with it.
I'm unable to access FWIW
This is the point I wanted to make. Rails is great for some problems, not great at others. I can tell you for example that it's not great at transforming 2MB of JSON into a differently structured 2MB of JSON.
I was 13, I had a computer with BASIC, a printer, and a manual for the printer that described all sorts of neat things it could do. So I wrote a program that sent codes to the printer to demonstrate some of those things.

Showed it to someone who had a use for it and was willing to pay me for it; and that was the experience that opened my eyes to the fact that I could find an excuse to play with computers even more.

I wanted to fully comprehend computing from the plug to the outputs. I can't say that I've got there completely yet, but it's been a great deal of fun so far. Doesn't look like I'll run out of new thing to learn anytime soon, either.
Ah but fruit and vegetables were hard to get out of season. And smartphones exist! Checkmate, Millennials.
I'm lucky enough to work at a place that gives us actual offices. Some offices are larger with two desks (so some people share) but I have my own office. There's apparently some plan to improve our site and I'm really hoping they don't move us to an open plan or something.
Right, I mean it's understandable that fields like healthcare, construction, food service all physically demanding, stressful, and have lower pay, because they can all be remote right? We work in one of the most privileged fields ever. We should never forget how lucky we have it.
Yes. That is why AI will outperform them.
There’s multiple aspects.

1. It retroactively applied to existing licenses. So was a bait and switch to many

2. Installs are a terrible metric for revenue. A lot of Unity based games are F2P, where installs would then turn into negative revenue.

3. They didn’t outline any of the edge cases of users getting refunds. That would allow a user to be a negative revenue suddenly.

Their change as it was first announced was really out of touch with their own community of developers, and failed to even encompass the most basic of real world details that a developer may face.

At the end of the day, the model itself isn’t really bad, but all the implementation details, or lack of, were.

Internal Unity staff had raised all these issues with leadership and been ignored.
Intel Shows GPU Max 1550 Performance and Gaudi3 AI Updates at SC23
Also read these articles for more on the idea of "HTML Web Components":

https://meyerweb.com/eric/thoughts/2023/11/01/blinded-by-the... - "So there you have it: a few thousand words on my journey through coming to understand and work with these fully-Light-DOM web components, otherwise known as custom elements. Now all they need is a catchy name, so we can draw more people to the Light Side of the Web."

https://adactio.com/journal/20618 then suggests the catchy name.
My first job I was in medium sized room. With an individual desk.
A handful of other peoples, and a door that close.

The team was large. Like 50+ devs easily. All scatter in different rooms.

Bliss
There are DDR5 modules with traditional ECC though, which the parent poster presumably meant.
If your reverse your comment you could say “only when your reach 100s of developers will you need to start changing things a bit.”

Sounds good to me. Most companies never reach that scale and if they do, I think investing into some extras will be well worth it.

Tobi looks pretty chill about it in the documentary.
It's hard to give a short answer to that question :)

- Yes, if you know your input is short, you can use a smaller state. The limit is roughly a BLAKE2s state plus (32 bytes times the log_2 of the number of KiB you need to hash). Section 5.4 of https://github.com/BLAKE3-team/BLAKE3-specs/blob/master/blak... goes into this.

- But it's hard to take advantage of this space optimization, because no libraries implement it in practice.

- But the reason libraries don't implement it is that almost no one needs it. The max state size is just under 2 KiB, which is small enough even for https://github.com/oconnor663/blake3-6502.

- But it would be super easy to implement if we just put the "CV stack" on the heap instead of allocating the whole thing as an array up front.

- But the platforms that care about this don't have a heap.

@caesarb mentioned really tiny microcontrollers, even tinier than the 6502 maybe. The other place I'd expect to see this optimization is in a full hardware implementation, but those are rare. Most hardware accelerators for hash functions provide the block operation, and they leave it to software to deal with this sort of bookkeeping.
I think that researching pedagogy is very difficult, and, like many scientific fields, it is hard to reproduce results found in papers. (I am not an expert in this area -- I am just a former teacher with around 10 years teaching experience.) One of the main things I notice is that standardized test scores are not really improving. I think that high school students today would score about the same as high school students in the 1980's if they were given the same multiple choice tests. This implies to me that the field has not advanced a lot. I do think that LLMs and other computer based teaching could help.
Sounds like you're incurring lots of risk - risk that the company won't really want to keep you around.
This is part of the problem with your claim - many of us are not building CRUD apps, we are building complex enterprise software and there are unique challenges to solve.
Looks amazing. Non-commercial license.

CogVLM does allow commercial. https://github.com/THUDM/CogVLM
Maybe I misunderstood something but can't any two people just kind of increase the population anytime they want, like there doesn't need to be any vote or anything you can just do it, and it's usually not all that bad either.
you're seriously convinced they would have had no problems if they chose something else? every codebase that lasts that long and is used that much is going to face very hard challenges as it scales and meets new landmarks.

the maintainable codebase from day 1 to day 5000 is (mostly) a myth. yeah maybe some other stack could have faced different tradeoffs.

I'm also curious about YOUR choice of stack at this point.
I'd be surprised if even 10% of people--Americans at least--are capable of regular introspection. It is not a trait I have been able to identify in many others.

Interestingly, this posts headline offended me. I'm glad I read it in its entirety, but the entire way through I was struggling with dismissing the article because of a similar opinion to your own.
Good point! I guess a properly shielded drone would work. This way you could wear the defenders down, just send in a swarm after swarm.
You only have radiative (heat moving via electromagnetic emission aka photons) cooling in space. On Earth you also have convective (heat moving via moving fluid) and conductive (heat moving via permeating a material) cooling to move heat away from a source. Radiative cooling is by far the worst way to move heat.

The space station has a massive cooling system, https://www.space.com/21059-space-station-cooling-system-exp.... If you were to be ejected into a vacuum, you would first heat up from stored chemical energy in your body being released, and then cool over a very long period to a very cold temperature, not instantly freeze solid.

Something has to be very hot for you to feel it via electromagnetic emission (emitting in IR), and it will always transfer more energy by touch. If something is white hot, then it is emitting in the visible spectrum. But in an atmosphere, only a small amount of total energy emission is being released as photons, much more is released as kinetic energy to the surrounding air. https://en.wikipedia.org/wiki/Black-body_radiation
I agree with this so much. At my last job, the way I tried to explain it to people was that we normalize our db to prevent data duplication why not our code? Each team had its own StringUtils, DateUtils, etc. etc. But what was worse was that each team would manage state differently, and use different libs for scheduling background jobs.
I think GPT and friends are going to be busy refactoring legacy code bases for a long time.
The ability to point GPT to a new code base and say "Explain this to me", "Are there any security vulnerabilities?", "What are the best refactorings in terms of cost/benefit?" is available now.
I'd prefer another player that doesn't rely on TSMC.
They can't take it from you because you can declare a higher value. You would have to pay more in taxes on it, but it should still be profitable. The whole point though (according the authors) was that if it were MORE profitable to someone else (because they had complimentary assets or some ability to use it in way that you can't) then it is better for that person to buy it and create more value from it. To take a completely contrived and unrealistic example, imagine that you owned a piece of land with some rare plant that can be turned into a cancer cure. This plant ONLY exists on your land. Obviously this land is extremely valuable to someone who can actually bring the cancer drug to market. You can of course refuse to sell the land (it is your land to do with as you want) but it seems sub-optimal for society for you to do so. Under this system you would either have to pay a really high tax or actually sell the land to someone who can make the cancer drug
You are absolutely right. And yes, I am aware.

Location will actually be done by prefixing the hash with the value of the enum for the hash function/settings pair that made the hash.
I took Lebesgue integration and some pretty high powered group theory classes in the 1989s and am retaking them now, and I have to say the presentation now is much better. I think having Terrence Tao blog about how stuff really works makes a difference, at least for lower level grad classes. :) and trying to present groups as the widely useful abstractions they are instead of just a cute self contained theory makes a difference.

Interesting to note we haven’t got a text book for these classes just lecture notes and a number of text books recommended if we want additional presentations.
These "problems" assume that the "tax value" will actually be similar to the "market value". What's the difference between "0.1% on the declared tax value, you have to sell it for the declared tax value" and "0.2% on the declared tax value, you have to sell it for twice the declared tax value"? I'll give you a hint: the numbers come out to be the same.

And there was never any requirement that you put the house on the market for the declared tax value. When you don't want to sell, you make the declared tax value twice (or three times) the market value; when you want to sell, you set it to a bit above the market value, and then put it on the market.

Maybe to make the arguments easier you can encode the second one into law. But the basic math ends up the same.
Hi, do you have a source for the "engine is highly profitable"?
Are there any youtube videos that go into the theory of proliferation and how an arms race works, or is there just not that much information available? I've kind of tired myself of the technical details of how the weapons work, the modes of delivery, and the (feeble) countermeasures. But the theory about why we have to keep developing them (arms race) is really fascinating (in a macabre way). It's so easy to have a child's view that WMD are terrible (and yes, they are) and therefore should be eliminated. But the fact that they are so terrible is paradoxically why we have to keep advancing them. I want to learn more about that.