skysight-inc/HackerNews huggingface dataset:
Concrete strength is a function of several factors

Strength of Cement - portland cement is typically used. Fire limestone to get lime, add fly ash and other additives for increased strength. Ratio of Water to Cement is important to get a complete reaction, but dont add too much water.

Aggregate - angular aggregates provide the cement something to stick to and distribute the stresses evenly. You want a well graded aggregate, including sand particles up to larger chunks of rock.

In my part of the world the aggregate is typically crushed limestone. Add clean sand for different mixes.

There are other chemical additives that will increase strength, workability, and the speed of cure.

Since reaction of water to cement is exothermic - on the really high tech monolithic pours they're using technology to carry away the waste heat. You want the whole mass to be at the same temperature to reduce the internal stresses.

There are actually spherical glass orbs you can add to your concrete if you want it light-weight. Floating concrete is a thing. This comes at the expense of strength.
This exact situation happened with Roblox - they shut down then hired the biggest cheat developers for their game. Kinda funny.
Because logging is persistent. Once I have good logging implemented for a section of code I can always enable it and see what's happening every time the application runs.

Debuggers are one-offs. Running a debugger (and rerunning the application) every time I'm suspicious about something, or need confirmation, is more effort.

Good logging is having an always-on debugger that's enabled for everybody at once. It's an investment that pays off.

Yes, I know how to use a debugger, but rarely has it been more valuable than good logging.
> GM to release plug-in hybrid vehicles, backtracking on product plans

https://www.cnbc.com/2024/01/30/gm-to-release-plug-in-hybrid...
Thank you! Spot.io falls broadly into the same category as Vantage/Ternary/others, so the same answer as here applies: https://news.ycombinator.com/item?id=39183504.

In a sentence, these tools display the same cost data available within AWS - where max granularity is per-database or per-EC2 instance - whereas, Dashdive can accurately attribute portions of usage on the same DB or instance to different features/customers.
It is not the same genre and therefore not the same target audience (Story Driven Turn Based RPG vs Base Building Survival)
Related video: https://www.youtube.com/watch?v=hdwaWxY11jQ

Related ongoing thread: Apple Vision Pro review - https://news.ycombinator.com/item?id=39190468
It's not 100%, no, that's why I used "a lot" and not "all".

And even if they are in the US, it's not that hard to be reasonable untrackable with minimal skills. People make mistakes, and maybe every now and then you might catch one person. Whoop-die-doo. It's just not effective or reasonable to track down every single case in depth.
Its coming out on Friday?
> Q: What if I wear glasses?

> A: The Vision Pro wasn’t designed to be worn with glasses. Instead you have to order prescription Zeiss optical inserts for $99. The two monocle-looking pieces snap right into place.

It's $99 for readers (non-prescription) and $149 for a prescription. Very odd that she would have gotten that detail wrong since it's so easy to check and it's been repeated so often in coverage of the AVP.
Lets say I predict the same future for Apple's device.
I understand what you're saying, but it sounds like a kind of sunk cost fallacy. If a parking lot has been sitting empty for years and nobody has any plan to do anything with it, maybe it's time to tear it up. The bad decision to build it in the first place has already been made, we can't undo it by waiting and hoping. You can at least recycle the asphalt to get a bit of use out of it.

Rewilding unnecessary farmland is also a good idea. As usual in these conversations, there's no reason we can't do both.
Yo it's cement + aggregate makes concrete. As in concrete is the sum of two or more products. Concrete doesn't grip anything. Cement binds and aggregate shape doesn't count for bugger all.

You use tie in rods of rebar to bind one slab to another, not the aggregate because the aggregate does sh*t all for structural strength. It's more for the compressive strength.

Tbh you can make a form or concrete out of perlite and cement. It's light af, great for ship hulls when reinforced with steel. Still concrete,just doesn't need any sand.
> Coal power plants could have been replaced with natural gas much sooner.

Gas is better but still terrible and chances are that this would have just slowed down the urgency and therefore nobody would have acted on anything. We would end up at exactly the same point just 50 years later.

> We could have actually spent the last 50 years building nuclear power plants instead of trying to get rid of them.

So? The major force for getting rid of them (rightfully in my opinion) was the Green party (in Germany, similar groups elsewhere). Do you want to imply they did this in order to prop up the fossil industry or because there was insufficient public knowledge? Quite simply the priorities of the movement were different in the 70s and even 80s because climate change as a major issue had not yet sufficiently made it into the collective consciousness even of the green party.

> In transportation, all we had to do was unwind the disastrous expansion of the automobile and return to superior technologies that preceded it, like trains, trolleys, busses, and bicycles.

You may think so, but most people disagree that these technologies are superior. In almost every imaginable way they are worse - except for their ecological footprint. The only exception being big cities. Rest assured that no majority of the population will give that up and so the car will remain the primary means of transport even in 50 years. All we can hope for is that it will be produced mostly carbon neutral.
Okay. Now do that for Russia.

I don't think migration of humans revolves around population density.
Oh good, yet another reason to avoid buying any new cars.
I was under the impression they confuse lights for stars and it messes with them. So if you simulate the sun the probably don’t get confused. You can but red spectrum lights that also are supposed to be bug friendly
Oh I agree - I loved my experience with Drop Dead Home Invasion, and there are a lot of amazing experiences overall. But, I do think that most of these have more potential as a "demo", that you do a few times but would not motivate you to use a headset every day, beyond a relatively small group of people.

It is like VR is currently stuck being Kinect in terms of sales and stickiness, while Meta and Apple would both like it to be at least like the Wii, or ideally the iPad.

Personally I have found social experiences to have the best long-term appeal (i.e. Racket NX or Drop Dead with friends), but even there I am not these apps have sufficient mainstream appeal.
That's not the commonly-accepted interpretation of coercion. Under this definition, "forcing" someone to choose between losing their job and doing the work they were hired to do also constitutes coercion. Losing your job because you declined to comply with company policy does not constitute violence. Insisting that your modified definition is the correct one does not advance the discourse in a productive manner.
Yes, February 2nd, this Friday.
Also: Apple Vision Pro review: magic, until it's not - https://news.ycombinator.com/item?id=39190506 - Jan 2024 (226 comments)
My wife had a 2003 Vibe, they were contacting her about the airbag recall years ago. I'm not following why there's an update now? Isn't this the same recall?
It's easier to learn from history if we look beyond our own short lives.
> Creative, unstructured play and safety aren't mutually exclusive.

I think what you're missing is the difference between "safety" and "safetyism".

The latter is largely an unscientific and unhealthy focus on eliminating any possible risk (at least, of the types that the person in question can easily envision), regardless of the cost to the activities.

As an elder millennial, I have seen the explosion of this mindset during my lifetime. It's why I, when I was 5 years old, was able to regularly play with friends from down the street with no adult supervision (with the consequence being occasional skinned knees and scraped elbows, and the one memorable evening when my little brother had to be given ipecac because he ate—more or less at the urging of the rest of us—a plant that turned out to be perfectly harmless, but couldn't be positively identified by any of us in time to be sure of that)...but today, in many parts of the US, if someone sees an unattended child under the age of 16, they might call the police, and the parents might actually get arrested for child endangerment.

Not because there was any clear and present danger. Just because the child was not being monitored 24/7.
What I'm going to argue is that the prevalence of scams is a threat to the perceived legitimacy of the government, media and other institutions and has a terrible cost which is a lot more than people think. (e.g. how can you trust The New York Times when it has obvious scam ads? Doesn't continuous exposure to scam ads make Donald Trump's lies seem a little more "normal"?) By that measure it might be worth spending $1.50 to prevent $1 of scam.

Gift cards should just be eliminated. I mean, my sister-in-law bought my son a gift card for Burger King but we don't have a Burger King in town. Why not save people the embarrassment?
Are those 35 counting the people who were asleep, trying to kill themselves, etc?

Because if they are from the same news outlets as reports the other Tesla crashes, those are not always due to Tesla issues, and it always comes out they weren't because they have data on everything.

And other cars catch on fire in crashes and people burn to death in ICE cars. Fires are not exclusive to EVs. Shrapnel airbags on the other hand...

Plus I've seen at least 5+ videos where the safety features in a Tesla reacted faster than the driver and saved them, do we count that as a negative death?
...and you're not on Linux, because on Linux we have rr! https://rr-project.org/

(I still use print statements 99.99% of the time though)
I remember reading that some version of the MicroVAX CPU had etched into it, in broken Russian, something approximating "VAX: When you care enough to steal the very best". I'm not sure how many Soviet engineers would have been familiar with the Hallmark commercials to get the joke, though.
Hey didn't appreciate this comment at all. I have the right to say I don't give a shit about something and your imagined implications are just you. It was extremely insulting to compare me to a person shouting at a funeral as well. Weaponizing a person's death just to use it to make me look bad is the worst. We are done. Please Do not speak to me on this site ever again.
Nah, it drives up the price of housing in London... A lot!
> The result has the highest success on that model you specifically attacked, but it apparently transfers albeit with a lower success rate.

Which is already great. Especially given that most users tend to use the same product. It's not like it has to poison all models; it just has to poison the more expensive ones.

And hopefully they will find a way to improve it such that it generalizes better.
I've only tried one or two copycats, but found them to be kinda crappy. And I see a lot of other reports of others' experiences that seem to back that up.

Not saying they're all universally garbage, but you get what you pay for: the RPi folks manage cost very carefully, whereas most of the copycats are just trying to undercut on price, and will never follow through with the kind of software support the RPi folks continue to provide after over a decade. Consider that the original Raspberry Pi 1 model -- released 12 years ago -- is still fully supported by Raspberry Pi OS. I'd be surprised if most of the copycats support their boards for more than a few years at most.

RPi's for-profit arm mostly deals with B2B sales, and courts the kinds of customers that require long-term support as table stakes. I don't think most of them would touch the copycats with a 10-foot pole.
The effect is the same (for the purposes of an outdoor dining area), and I believe that's what they were referring to. Perhaps a better way to word it would be: bugs will go towards a local light.
The point I was making is that even if one assumes the worst about the PowerPC and the best about the Snapdragon, the comparison doesn't make any sense.

Even if the IPC were FOUR times that of the PowerPC and we accepted the other assumptions in favor of the Snapdragon, that'd make one quad core Snapdragon 344 times faster than the slowest RAD750, so if four or more RAD750s have ever been sent to space, then that'd make the Snapdragon LESS than 100 times faster than just four RAD750s. That's not taking in to account all of the other CPUs used in space missions.

Larger caches and faster memory are necessary to just maintain the IPC - they don't mean that the Snapdragon is faster per clock by virtue of those alone.

I have a 600 MHz PowerPC 750 system (original iMac with Sonnet accelerator) and a Cortex-A15 system (the Cortex-A15 is a 32 bit ARM from around the same time as the Snapdragon 801, and which has better IPC than the Snapdragon), and I can say that the IPC of the Cortex-A15 is much closer to 1.5 times than 2 times that of the PowerPC.
How would you identify the source of a batch of sand easily? Using the sound it makes: https://www.economist.com/science-and-technology/2019/09/12/...
I reckon the son was gay hence the sextortion and his dad political leanings is probably to the right which regards being gay to be worse than being on social welfare.

From his website - yep called it.

"Brandon Guffey is an unapologetic conservative who shares our passion for faith, family, freedom and life."

He is clearly deflecting the blame here.
The very first thing I do when setting up any new dev environment is trying to attach a debugger to my local build

It’s setup time that pays dividends for years afterwards.

I think many folk don’t bother until they need to fix a bug and at that point you are in a sunk cost situation.
> 4K monitor

It's more like 1080p monitor. The virtual monitor only covers a small part of the VisionPro's display. You can compensate a bit for a lack of resolution by making the virtual screen bigger or by leaning in, but none of that gives you a 4k display.

To really take proper advantage of the VR environment you really need the ability to pull out apps into their own windows, as than you can move lesser used apps into your peripheral vision and leave only the important stuff right in front of you. You also miss out on the verticality that VR offers when you are stuck with a virtual 16:9 screen.
One problem I have is that I primarily work on embedded distributed systems (multiple software components talking over a high speed messaging layer, using both sockets and shared memory).

As soon as you pause the code in a debugger you "disturb the equilibrium" in such a way that debugging the original problem becomes impossible because remote components start timing out or closing sockets, etc.

I still end up debugging via print statement a lot so I can run the code at full speed. Does anyone have a good tooling suggestion for a situation like this?

My dream is a tool that would allow me to set a breakpoint which would start capturing program state at each line while still running at full speed, but then allow me to step through the recording later. Does something like this exist?
Vastly outweighed by the problems of parking minimums:

* Increased housing costs

* Decreased housing supply

* Increased air pollution

* Increased traffic

* Increased noise pollution

* Increased water pollution, stormwater usage

* Decrease in community and neighborhood cohesion

If a person feels they need parking, they can pay for it. They don't need society to force parking to be made available to everyone, whether they want it or not.
The Flying Pace looks like… ‘running’? Almost cartoonish.

Very smooth though.
To add to the suggestions by the sibling comments, Eleven Table Tennis and Racket NX are both great racket-based games with multiplayer and a high skill ceilings. Depending on your personality I think applications like this are much more motivating than going to the gym as a workout.
The RPi foundation is a charity.
Having been in both time periods, a distinct difference in 2021 was a sense of unreality - a company/org/large team could survive provided that they had someone important who believed that it would be useful some day. Ultimately, I suspect this is because important people had access to effectively infinite dollars for a time. Provided that they did not have to mark down a loss.

This time period is coming to an end, we're once again looking at real metrics and seeing that some sectors of tech had none. In the end, this will probably be good for the industry - but it will be an unpleasant transition.
However large scale datastores such as such as firebase have a tree structure to allow for scale-out.
Epic comment and diagram, thanks. From this, how can we calculate bearing and distance from one of our locations to the source? Edit: I see that we can use multilateration suggested by parent-sibling comment if we just had distance to source (ie radius of unique tangent circle).
Most geniuses cannot prosper in today’s world. Genius correlates strongly with disagreeableness and disagreeable people have a very hard time in modern organizations where sociability and rule-following are crucial. Not least in academia. We should cultivate the geniuses we do have rather than spam the earth with more people - especially people from countries with low general intelligence.
A PHEV seems like the ideal vehicle to me. Most people's daily drives are probably around town, which will be all EV, but for longer trips you don't have to bother with slow, potentially crowded charging stations at limited locations. Initially I thought it's a bit of a waste to haul around an ICE that you won't use most of the time, but the alternative is a long-range EV hauling around a battery that you won't use most of the time. Seems like a wash.
tongue in cheek reference but based in a flawed but pervasive understanding of that event

government modification of derivatives contracts, war right beyond the border (affecting delivery of supply), total gaps in price discovery possibly due to plague... this is probably one of the worst examples of anything irrational, despite being the poster child
If you own a zillion acres and someone grows corn or wheat on it without renting the land, you're a farmer and they are a farmworker.
that's a cool idea, I'll look into it!
Protein folding is Turing complete because it can simulate a Turing machine by folding itself into a homo sapien, taking computation theory in college, and stepping through a Turing machine with a pen and paper for homework.
Ah, I plausibly didn’t hit this because I was permanently on a fork of the acme.sh codebase, after I opened a PR to support Route53 subzones and it was ignored.
> I think urbanizing core metro areas is actually key to protecting rural areas.

It really is. Some subruban and rual places are starting to get this as well. A common theme among the ones that get it is to provide density bonuses (i.e. if you allocate large blocks of conservation space, you can build more densely). The result is that you get the same overall density in an area but the people are living much closer together and not sprawling out and building over the natural environment.

I personally think most of them are too conservative with their approaches (often setting upper limits on density even with the bonuses) but the general approach of "build dense to limit the impact on rural spaces" is progress.
I apologize for using the word subtle. What I should have said is I don't understand the topic and reading about it has left me a sense that one should be very careful.
Yes, that seems to be true. I'm not from the US and wasn't aware of the fact. Makes much more sense now.
I love this approach but I augment it with Zod branded types. IDs have a known start to their identifier and anything coming in and out of the database is verified match a schema
So how do you get from a non-walkable city to a walkable city? We can't remove parking minimums because everyone needs a car because it's not walkable. But we can't take out the parking lots, because no one walks, because there's too many parking lots between the places people want to go. And we can't put in dedicated bus lanes, because that would reduce parking, which we need because buses are too slow. How do we break the cycle?
But you look down your nose at them. Nice.
I believe they're Torq-Set. Another demonic fastener forced upon the world by the Phillips Screw Company.
I do both.

Almost all the inflection points you would want to print to debug, it should really be a debug log level statement that stays in the code. If you're writing a lot of these you might want to simplify the code.

Otherwise yes use a debugger, but question why you're having to debug in the first place. Improve the code quality while you're at it instead of just fixing the bugs.

This is probably going to sound weird, but debugging feels a lot like washing dishes to me. Do more with less and avoid toil.
I think it's a more important feature than just a cosmetic color. Imagine if you bought a truck to haul cargo, but were then told it can only transport one type of cargo at a time. That would suck.
Bug bulbs: https://www.amazon.com/Edison-A19-14W-LED-Light/dp/B089QXZ8R...
It is interesting how many here are excited about this for productive computer work. It’s also what Apple advertises with.

But what is the account situation like?

For years I’ve been complaining that I can’t easily use my private iPad with my company Mac because they have separate Apple IDs. Things like sidecar for a quick virtual whiteboard are basically impossible.

AirPods have gotten better over the years where today I can freely switch between devices belonging to different Apple IDs with the same AirPods.

But is the Vision Pro like that as well?
It would seem weird to exclude the not-so-small group of people working from home but with company MacBooks
https://www.reddit.com/r/apple/comments/15z92if/apple_won_a_...
Hololens are dead. Even their github is not updatel if i remember well 2 years.
Or, the computer manufacturers will try their best to stuff the Permissiveness Genie back into the bottle. It seems with every macOS release, Apple is determined to make more things previous Macs could do either impossible, hidden behind permissions or hidden behind default-off settings.
The fact that at-home tests had an API of any sort was already a major screwup IMO.
It is but, while commercial real estate is still somewhat of an open issue (many companies are slowly edging out of lease renewals), it's probably fair to say that the after times look a lot more like the before times than various research firms and others were saying in the early COVID days.

A few more people are working at home. Some people probably retired early. But how many other big changes has the average person really made?
I would say it's the right of exclusion that they keep post sale via cryptography.
In the same vein, I'd enjoy a Highlander Prime. The RAV4 is hard enough to find, so I assume a Highlander would have a years-long waitlist.
Are you implying that there is some other way to live? Because if so, then please help me find it lol.
A combination of monetary incentive on the supply side (from big tech and big media, as centralized, larger-scale products are more profitable) and modern technological capability (smartphones providing computing platforms to most of the world, networked via cellular data)?

There's far less profit and incentive in making decentralized, smaller user base products.
Maybe I am a frog. But so is everyone else. I mean who doesn't own a smart phone? Everybody mostly doesn't care.