skysight-inc/HackerNews huggingface dataset:
> At what temperature would a heat pump be less efficient than an electric resistance?

There is no such temperature, with a good enough design of heat pump. A good heat pump is always more efficient at heating than electrical resistance.

The improvment is a multiplication factor, which can be quite large; it's not just a few percent. The factor is why I'd describe mining - or resistive heating - as a very inefficient use of electricity for heating.

Since we are theorising about the merits of miners, we may as well use the theoretical limit for the alternative. Wikipedia explains: "If the low-temperature reservoir is at a temperature of 270 K (−3 °C) and the interior of the building is at 280 K (7 °C) [...] only 1 joule of work [...] 28 joules of heat are added to the building interior".

In other words, a heat pump can be 28 times more efficient than running a miner or other resistive electrical heater in those conditions. But that's a high number, a theoretical limit in conditions chosen to put heat pumps in their best light.

More realistic, based on real devices: "In Europe, the standard test conditions for ground source heat pump units use 35 °C (95 °F) [...] and 0 °C (32 °F) [...] the maximum theoretical COPs would be [...] 8.8. Test results of the best systems are around 4.5. When measuring installed units over a whole season and accounting for the energy needed to pump water through the piping systems, seasonal COP's for heating are around 3.5 or less. This indicates room for further improvement."

So 3.5-4.5 times more efficient than running a miner for heating in real conditions with current heat pumps, which can be improved. That translates directly to reduced atmospheric emissions from electricity generation.

The efficiency of the heat pump reduces when the outside temperature reduces, and reduces when the inside temperature increases. Conversely, if you are heating water, the time when the heat pump is most efficient is in the summer.

Cost is distinct from efficiency. The cost of a unit of energy as electricity is higher than the same unit of energy as gas, for example, so if you are comparing an electrical heat pump to gas heating, at a low enough outdoor temperature the gas heating is cheaper. This is why some places switch between heat pump and gas modes. The same argument does not apply when comparing with electrical heating like miners, or with an electrical water boiler.
Git: Date(1): Add '-I' flag to output in ISO 8601 format
Hmm, this isn't a helpful response. See my comment above. We're a small team of devs working fulltime on a startup and we want an environment almost as if we were all in the same office. I was curious if there were tools that made it very easy to jump into a meeting/room. (Preferably without random meeting links)
>>> not for the first time, and not just one core team member

Playing devil's advocate here, but we should hear the same history from the other side, more so if these "insulting and yelling" happened more than once with different team members.
C23 just dropped support for any non-twos-complement architectures. No more C on Unisys for you! http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2412.pdf
Why disgruntled? I never saw a Model 16 [1] but they did exist.

[1] https://en.wikipedia.org/wiki/TRS-80_Model_II#model16
> Look at Venice, which was a quaint little town nobody had ever heard of until Airbnb came long.

Venice, Italy? Arguably the most popular tourist destination in Italy for... decades? Centuries? Airbnb might've exploded this popularity, but Venice has always been Italy's Disneyland.

> look at Miami Beach. It's banned Airbnbs and short term rentals, and now housing there is incredibly affordable and not the most expensive in Florida.

Drastic measure aside, which has surely plummeted profits from tourism, are you sure the drop in real estate prices has nothing to do with the fact most parts of Florida's coastline will be underwater within the next few decades[1]?

[1]: https://www.scientificamerican.com/article/miami-is-the-most...
"Throw more compute at it"
It does seem like a very bizarre thing to say. As if GPT-3 decided to comment on HN.
Curious if the same people getting upset about her words were similarly upset when Richard Stallman said after hearing of Steve Job's death "I'm not glad he's dead but I'm glad he's gone".
I didn't realize my Roth IRA contributions limits are curtailed starting at ~$125k income.

My income is around that, although I guess I wouldn't hit the limit due to maxing my 401K.

What would happen if I contributed too much to an IRA one year? Would I have to pay a penalty during tax season? Would I get the difference back in cash?
I believe the biggest leap is in latency, it can still be improved but it is a very nice and very welcomed new trend that was ignored for so long.
MacOS' "productivity" software is my favorite I know of. I'd have to go back to historical (10+ years old) versions of similar products to find ones I like better. Their quality is excellent. They're light on resources (I can forget them in the background), quick to launch, do everything I need (even collaborative editing), and have good-enough templates for most stuff I'd want to do. Preview is best-in-class, as far as I know. Finder may not be amazing but it also crashes ~never (which isn't impressive compared to Windows Explorer but is compared to some, ahem, other platforms) and is lightweight. The calculator is great (and I miss a couple very minor, but thoughtful, UX things about it when I use others). Digital Color Meter is awesome. I wish Notes had export and supported Markdown input, but how smoothly and sanely it handles things like embedding files, and how stable it is and the reliability/speed of sync between devices, makes it pretty damn good anyway. The email reader's stuck at some kind of local maximum like nearly all other email clients, but it's good enough.

The 1st-party software quality is a big part of what keeps me around. Possibly the main thing.

[EDIT] Oh, and the Terminal is one of the best there is. It's very good. Others may have more features, but it's far from minimal, yet manages to have lower input latency than most (which tells me Apple's got their priorities straight)
Interesting that nobody has mentioned the statement "we bought it not knowing what we would do" -- a $14 million ad buy (before production costs) with zero plan.

Not too surprised the stock is dropping fast.
Except you don't.

Openshift started as a paas that ran on... AWS.
Wow, that video brings back a lot of memories. I recall a friend booting up Yggdrasil and taking me on a tour. I was, to be entirely honest, fascinated with Linux from the get go. At the time, I didn't think it was ready for my desktop, but a few years later I went all in and haven't looked back.
Lots of times.

1. When I used an Acorn Archimedes.

2. When I had an AMD K6-2, had a Matrox Mystique and ran tkdesk

3. When I had a Pentium III ‘Coppermine’ and ran KDE

4. When I had a dual Athlon and a Western Digital Raptor

4. When I first got an SSD

5. M1 Air
Being right and early is sometimes indistinguishable from being wrong..
There's a 3 hour workshop on YouTube it's much more useful since it adresses passive aggressiveness
My personal laptop is a 13-year-old x201. Its "fast enough" for 99% of my uses that aren't gaming.
> Once upon a time, computers did what you told them to without reporting you to the stasi, Google, or a number of marketing firms. Now that kind of freedom is obscure and hard to access for most people.

Varoufakis answers the question here[^1]. Use subtitles, translation is acceptable.

Yanis pointed out any new "successful common" (e.g. building societies) gets privitized. The most widely known example he points at, is the internet.

He also point out, that this is nothing new. Happened in the 19th century as well.

[^1]: https://youtu.be/JfGgRf0JPr8?t=1761

[^2]: https://en.wikipedia.org/wiki/Kratos_(mythology)
Around Haswell (4th gen Intel), but I avoid using bloated software, which is extremely common, so YMMV.
I did mention working on Spring projects, which was a monolith that did use Maven. The slow part wasn't Maven or the dependencies, it was the Spring startup with all the dependency injection and filter loading taking most of the 2 minutes. There was also some Thrift generation but again that was rather quick.

I would classify this as self-inflicted as I don't believe there's anything intrinsic to what's going on for it to be as slow as it is, only poor implementation of extensibility or other ideas (maybe JPQL, idk).
Saying Goodbye to My Childhood Friend Arthur
We call it a ditch, Google execs call it good returns.
Canada. I suspect that most Americans don't know that bag is an option.
That seems unlikely. However:

It's confusing to me how, in 2022, a deca-billion-dollar company can't host a static page reliably.
IMO, it's because Ember is philosophically anti-react.

Ember is focused pretty heavily on convention over configuration which, IMO, ends up making everything a little harder to get into. You have to do things the "ember way" or you face a large uphill climb.

Ember is all encompassing as well. You make an Ember app. You don't make an app that happens to have some ember capabilities.

The reason react is popular (IMO) is because it's just the view layer. It allows for you to work with whatever other ecosystem you like in a fairly flexible manner.
I didn't catalig anyone. Do you know that the quote sign (") stands for quotes?
Excuse Me Sir, Do You Have a Moment to Talk About O̶u̶r̶ ̶L̶o̶r̶d̶ ̶a̶n̶d̶ ̶S̶a̶v̶i̶o̶r̶ Lua?
If you look at the top of the page with Chris' comment, it looks like the Swift team is moving to address this:

>In the coming weeks, we hope to introduce a new language workgroup that will focus on the core of the language evolution itself, splitting off this responsibility from the core steering of the project. The intent is to free the core team to invest more in overall project stewardship and create a larger language workgroup that can incorporate more community members in language decisions.
For me, speed peaked around 2005.

Today I have 32 gb of ram and can barely run chrome, acrobat, and word.
Amazon’s app is made up of mostly web views, and so are a lot of others. Apple doesn’t give web apps all the features (e.g. push notifications) as native apps, so it behooves companies to continue using at least native wrappers.
A rename would be welcome. That singer girl pops up every other search about Swift, so irritating.
Apple retail employees organize a union using Android phones to prevent spying
I admire this, tried it and it's very good. I even had a feature suggestion accepted for development.

But for some reason, unlike most tools I use, I don't actually care or have an issue with Figma not being open source.

Therefore: Figma works well, has a vibrant plugin ecosystem, lots of 3rd party design assets, can be used on any platform and in 4 years I've never needed to pay for it....

So tbh I can't find the motivation to jump ship to something else.
That's fair. Also presumably Apple's rules mean that we probably won't be hearing the other side.
There's a game that I play about an hour a day for the last decade. I wouldn't say I'm very good, but I do understand the game at a competitive level.

I just checked my stats for the game, and apparently I'm in the top 2% of all players.

So yeah, I'd agree with your hypothesis.
I bought a PS1 for this game. It's still my all-time #1. It has a great story, lots of content, lots of extras and minigames. Heck, in 1997 it was my favourite snowboarding game...
I don’t like FaceID and that’s why I haven’t bought a newer iPhone.
Apple should offer both TouchID and FaceId options on every phone. Allowing choices is what’s most important to me.
Did you ever try going all the way and using graphical layouts (Nibs/Storyboards)?
There are C compilers for the PDP-10, it must count as fairly weird.
I'm at fault for a lack of clarity. This is a difficult and unfortunate discussion, and let's try to appreciate all of us as whole people today in the fullness of all our experiences and lives lived.
Still not fast enough. When I can compile the Linux kernel in less than the time it takes me to blink let’s talk.
What are you talking about? Who is anonymous?
Somewhere around late 2016 or early 2017, at which point most machines I used had SSDs for system drives and a cheap SoC was running video from the media array to my TV (a Pi3 at the time, now a Pi4 is doing the job as the 3 struggled with x265 at 1080p). I'd just put together a new main PC with a GTX1080(6Gb). The biggest upgrade in that build was the 1080, which is hardly taxed ATM as I've stopped playing much by way of fancy games (due to a mix of having picked up other hobbies and the rest of life getting in the way).

I have upgraded my main desktop recently, late 2020 IIRC, because I started doing a bit of video recording on it. The old CPU was fast enough but the new one does in less than an hour what would have been an overnight task for the old. The old kit was handed down to improve the home server, mainly to give it more RAM rather than for speed (the old motherboard in there wouldn't take more than 16G, at least not officially).

The other “fast enough” question is home Internet. For me that was probably 2011 when FTTC became available with 10mbit upstream (more is useful, but 10mbit is fast enough). For downstream I'd say even earlier with 17mbit down (the 1.4mbit up I had then was much more limiting) and anything that didn't happen quickly at that rate wasn't urgent enough to leave running while I did something else. Of course what I do has grown but the connection has grown too so stayed in the “fast enough” range. I'd like faster either way (currently up to ~76down/17up though right now ~50/10 as after multiple disconnects I think due to the recent storms (my last section of line is string down the street from a pole)) but that would be luxury not something I need at all.
The part about lost goodwill sounds very true. I used to love Cocoa, and did my best to write quality apps for it, despite Mac's small market share.

But App Store ham-fisted rules made me distrust and resent Apple. I've stopped using Apple-only languages and frameworks as much as I could, and as a user I'm looking to leave the platform entirely (which unfortunately after a over a decade of using, I'm locked into and resent that too).
GM seeks US approval to deploy self-driving car without a steering wheela
Yes absolutely, I thought of calling out Electron but instead went with a classy 'slowdowns from abstractions because we could' self-inflicted category.
As much as I love this game some of the story really starts to fall apart around those points. I used to think I was just overlooking something or some details were lost in translation but after playing more of the series it seems like convoluted plots are just kind of part of the Final Fantasy style.

note: I've only played the original game and the remake on PS4 and seen Advent Children.
I don’t like FaceID and that’s why I haven’t bought a newer iPhone.
Apple should offer both TouchID and FaceId options on every phone. Allowing choices is what’s most important.
You're right, the techniques in NMR like Rabi and Ramsey spectroscopy, spin echoes are all used in atomic clock experiments too.
Context! Remember, they were slammed with more filings than usual due to the stimulus on top of the backlog from the previous new filings for the previous stimulus. They had to deal with this using a reduced staff amid figuring out how to deal with a newly remote workforce.
The SE is still on sale and likely to be updated sometime in the next month or so. There’s no way to make it an option within the “same” phone, as the design that allows TouchID necessarily requires a different design.
I'd like to take a HN poll on whether or not this is even "heated". Seems like extremely healthy debate upon my first scan through.
Where exactly is Airbnb a “free-for-all” nowadays? Every municipality I can think of where it might affect housing prices has very onerous regulations on STRs.
I was wondering the same. It's usually a game of "find the actual behaviour" among a sea of interfaces, frameworks and so forth. Go, I can see the argument for.
Statistical process control has been significant over the last 100 years.
Computers became fast enough for me with the advent of the 25MHz 486. I no longer had to write drivers in assembly and could write them in C instead! It was like magic! Writing C code, C code!, and it being a driver! I was blown away. My productivity soared! (Though my knowledge of x86 assembly has atrophied somewhat).

The next bump came with the advent of the 2GHz quad-core i7. Then you no longer felt compelled to work with compiled languages (for purposes of this discussion I'm considering Java and C# to be compiled languages). There were many tasks and applications where these interpreted languages were "good enough" and allowed you to get solutions in the hands of users faster. Building serious business applications in interpreted languages was something that never seemed possible when writing drivers in assembly!

Finally, the most recent bump has been treating AWS as a runtime platform. Not only can I create solutions in Python, a language I absolutely detested back in the 90's, but hell, I don't have any servers to manage any longer! Things scale under load and HA is easy to achieve. I no longer even think of AWS as being "the cloud", it's a compute platform - and a very powerful compute platform at that!

I've come a long way from writing assembly for x86 processors with a few MHz of compute power and RAM measured in kilobytes!
Yeah, alas that seems to be the case. A few unsubstantiated tweets seem to make some folks wanting to "undo everything".
Objective-C is a neat little language. Don't get me wrong - I would never go back to it, largely because of runtime errors due to duck-typing - but there were definitely things to like about it.

The best part was the perfect C/C++ interop. When I was working on iOS apps in Objective C, I found myself writing a lot of pure functional code using C and it was pretty neat to be able to integrate that with the OO stuff from Obj C so easily and with a clear dividing line.
> This has nothing to do with Atomicity in the traditional DB transaction sense.

Partial application of conflicting additive schema modifications is an atomicity issue as much as it is a merge issue. If the [HTML] doesn't validate before other nodes are expected to synchronize with it, that changeset shouldn't apply at all; atomicity.

It looks like Dokieli supports embedded tables.

With RDF (and triplestores, and property graphs), you can just add "rows" and "columns" (rdfs:Class instances with rdfs:Property instances) without modifying the schema or the tabular data. Online schema migration is dangerous with SQL, too, because the singular db user account for the app shouldn't have [destructive] ALTER TABLE privileges.

"CSV on the Web: A Primer" > "Validating CSVs" (CSVW Tabular Data) https://www.w3.org/TR/tabular-data-primer/#validating-csvs
Ask HN: Recommended books on blackholes for school-aged?
My little daughter started drawing blackholes and asking about them, whether these are doors to other dimensions, and so on. When I was a kid I got fascinated by the concept of these "gravity wells", from a 1984's encyclopedia and Disney's black hole movie with AI and all. Even designed a spaceship inside an asteroid to withstand the travel. Now I know the topic is more complex than that, but I'm looking for kids oriented literature on BH, gravitational waves, etc. "The Science of Interstellar" looks good for her age due to the visuals.
https://www.investopedia.com/articles/retirement/04/042804.a...

"If you contributed to a Roth when you made too much to qualify—or if you contributed more than you’re allowed to either IRA—you’ve made an excess contribution. That contribution is subject to a 6% tax penalty"
I realized this with Quicktime 7 and Quicktime X. X is my favorite media player, and yet the experience with 7 on Windows was like a time machine back to the shittiest parts of the 90s.
> there's stuff they had we still can't do

I'm skeptical, how would we know that? Are there vague inscriptions of things like Fermat's margin notes that imply missing knowledge?
Yup 100%.

Every couple of years I re-read Spolsky’s excellent article on this dynamic.

For those that are curious: https://www.joelonsoftware.com/2002/06/12/strategy-letter-v/
Readable to me is that you don't need to convert it to another format to be able to read or make edits. A textbox input on a webpage is sufficient for me to read and and write markdown.

And when you read my comment, you don't even have to know that it's markdown to be able to read it.

The moment you add a structure to it, you need to worry about having compatible parsers or it's going to forget to pull out some of your paragraphs and the like, and if there's a missing curly brace, your parser will throw an error. You'll still be looking at the obfuscated source data

Html is already the open standard, but people like markdown instead
You can completely avoid this by doing a backdoor roth ira though.
I don't. We're talking about intent.
Good point. A paintball is simpler and easier than a spray can anyways. As a bonus, if it hits something weak it will probably destroy or damage that component in the process.
Yup. Storyboards were of course a huge improvement, but I could never get the hang of constraints.
You can build OSes in many different languages, and compile software to many different CPUs and architectures.

That alone does not make it good.
I worked for Google at the time of the Fortnite fiasco and challenged the company on why we didn’t use our “beyond status quo” spirit to innovate the business model. It got raised to the top of our all hands dory and the Play store director had to come on stage to address the question. Scripted response. Scheduled a follow up 1:1 through his admin. Sat in a room for 30 minutes while he fed me bullshit. Walked away convinced Google culture is dead. No longer work at Google
> I still don't get your motivation on writing your criticism.

OP is an AWS consultant. Kubernetes is/was designed to make his skillset irrelevant. And he alludes to it in several places.

This is nothing but a poorly researched hit piece on K8s completely detached from reality
Spam on a “community forum” is a whole different world than all of the potential damages criminals can cause on a platform like Airbnb.
That #define is making fun of this:

https://www.forbes.com/sites/kionasmith/2018/02/05/indianas-...
The Failure Paradox
C seems ok no?
It's possible for an environment to be objectively toxic without regard to someone's "sensitivities".
Its about "a time before Mathematica" and it does talk about other products.
Java didn't have all these things, because there were a lot of very good libraries already doing that. Adding them inside a project is trivial. I think this approached encouraged creating alternatives to the standard APIs as well as extensions which in the end made the language even more rich.
Canada just made the warrantless asset seizure permanent (running past the duration of the Emergencies Act).

This is a warmup/trial to implement the same policies in the USA.
Favorite passage:

How would Apple like it if when they discovered a serious bug in OS X, instead of releasing a software update immediately, they had to submit their code to an intermediary who sat on it for a month and then rejected it because it contained an icon they didn't like?
One way to approach the bootstrap is as sampling from the posterior mean of a Dirichlet Process model with a noninformative prior (alpha=0).