skysight-inc/HackerNews huggingface dataset:
Ask HN: What is your favorite introductory-level textbook?
Eleven years after graduating I have rediscovered how enjoyable it is to flip through a high quality intro textbook on a topic about which you are curious.

I’ll go first:

Calculus and Analytic Geometry (1951) by George Thomas

It’s readily available for < $10 and I find it’s style much more engaging than contemporary textbooks on the same topic.

And a bonus one - when we had questions for the doctor when my wife was pregnant, I read the beginning of this and can say with reasonably certainty that I reduced the probably of some negative outcomes as a result:

Callen's Ultrasonography in Obstetrics and Gynecology (Mary Norton, 2016)
> Well Bitcoin's the best crypto asset. What's the second best? There is no second best. There is no second best crypto asset. There's a crypto asset that's called Bitcoin, right? Right. There is no second best, ok? But take all your money and buy Bitcoin. Then take all your time, figure out how to borrow money to buy more Bitcoin. Then take all your time and figure out what you can sell to buy Bitcoin. And if you absolutely love the thing that you don't want to sell it, GO MORTGAGE YOUR HOUSE AND BUY BITCOIN WITH IT. And if you've got a business that you love, because your family works for the business, because it's in your family for 37 years, and you can't bear to sell it, mortgage it, finance it, and convert the proceeds to the hardest money on earth, which is Bitcoin.

Bitcoin people really are a piece of work, eh? The people at the top of the pyramid sure seem like totally legit, honest people don’t they…
At this point, they should be treated as collectibles.
> I see no reason to suspect this is the case

Isn’t history enough reason?
Bad Gear's videos are great!
If only I understood how to use QEMU in practice. Are there any tutorials that come with all the parts necessary to get something actually running (and explaining it), without me having to go off in search for missing components that I have no idea where to find?
Couple more of cracks in the online advertising industry and there will be a major pop of demand for software jobs.
considering the url is the same as the title I saw, I really doubt that in this case.
Analyzing the legal implications of GitHub Copilot
I had a root canal just yesterday and also have some ptsd from bad procedures when I was younger. What has helped me is mindfulness meditation and bringing some sort of fidget/distraction thing to keep in my hands.

My endodontist's chairs have massagers in them, which is also a nice distracting/calming sensation.

Every time I've considered gas, I've chickened out because I get scared that I'll be left in some half incapacitated paralyzed state or something. Irrational paranoia, but it is what it is.
The premium version has an automatic tax estimation feature which shows a breakdown of estimates for each year in the sim, but it is US-specific at the moment.
This is pretty evident if you have been in this industry. Some quite famous news headlines generating breaches (Adobe in 2012, Target around the same time, Marriot group some years ago and Equifax more recently, list goes on ...) have had no effect on the stock price and the users also haven't acted in an adverse manner. There have also been cases of source code leaking or being stolen from famous tech companies (arguably source code is the "trade secret"/"Secret sauce") without any adverse effects and the response from investors and users has mostly been meh.

The recent trend of ransomware is probably a different story though, from notPetya causing about a billion in losses for Merck to more recent attacks which have caused the companies to spent monies to get out of business paralyzing situations. This sounds serious enough for White house to spin up a task force but if markets care or not is a different question.
A Greek island is to host an experiment in low-carbon living
Building Business Applications in Go
For new devices (even more simple things like a new hernia technique) they will have a rep from the company who can advise the surgeon how the device is used until they are more used to it.
That seems extremely unlikely, there's only so many hours in the day and while I'm sure that he has a keen eye on what's going on the odds of him being personally involved in the actual engineering are close to zero. If he's spending time doing that it'd actually be a huge failure on his part, there are more important things for him to spend his time on.
Expert Suggestions to Start Pest Control Business
Pest control in Wolverhampton should be done while pondering the weather conditions because heavy moisture in the weather can re-invite the pests and speed up the breeding system as well. The experienced exterminators will automatically make a good name for your pest control business.
Rest comfortably knowing that those people who require you to be in a major city don't know what they're talking about.

Florida, though, jesus...
On the other hand, if I'm not on FB, I probably miss those vendors of suspension components all together. Advertising "in the bubble", as opposed to "in the world", comes with its disadvantages. With content based advertising (media analysis), you'll probably catch me at the related watering holes and communities. Also, excluding non-targeted audiences doesn't exactly benefit a shared world view.

P.S.: The general idea of targeted advertising misses the concepts of state of mind and focus of interest entirely. There's a (significant) difference in delivering a message in context and out of context. (The latter may have even adversarial effects.)
Seeing this as a kid/teenager who spent a lot of time in arcades between 1985-2000 or so was really eye-opening.

My uncle managed the local Aladdin's Castle and was constantly tweaking the claws when people would win too much. Also the games where a light spins and you stop it- I saw many times where it landed square on jackpot and stalled a half second then moved to the next slot, and this was just for tickets and $.10 plush toys.

Now as an adult having seen this and having been in software so long, I knew instantly these new 'fish games' were totally rigged. People play quarters on a table top arcade game that shoots at fish,like a top down Duck Hunt. I have some family members/friends for whom this is super addicting. They spend hundreds/thousands over time but don't see it because of that time they won $200.

When I try to explain how weights work, how video slot machine games are rigged too...they never believe me.

Why?

It would be illegal if they did that, so I must clearly be wrong.

Last time we went to vegas my friends got mad that I only played a few hands of blackjack for the experience. To me it's all just giving money away.
Interesting, what's your objection to that? Seems like a reasonable way to make a request to me. Also seems reasonable to agree to or deny the request.
Sorry it was rude of me to assume what the source of your claim was. It is inappropriate of me to make it sound like I have a deep understanding of economics - I certainly don't.

If you have the patience, perhaps you can explain to me where the mechanism I describe fails.

If in a town 10% of people stop buying beef, grocery store will stop stocking their shelves as much as they did prior. Going up the supply chain, when more stores do this, the supplier will decrease production. Of course this takes time, but given a few-years time horizon, the effects of lower consumption do propagate to the supply.

Is your comment just a nitpick with my misunderstanding the technical language economists use? Perhaps you're commenting with an assumption of a shorter time horizon than what I have in mind?
SpaceX's synchronized twin booster landing is one of the clips that will define the early 21st century. I'm still not over watching it live.
"it is quite clear" sounds very much like an euphemism for "I just believe that" here.
By design, it seems, Bitcoin was completely stillborn and unable to change. The entire thing incentives status quo.
No. "He just lost his $1B lawsuit against Delta" might, but this definitely wouldn't.
Publishers (people that sell adds) do not want tracking. They want to take inventory space, display an ad then charge you money per impression. They do not want tracking,reports,clicks or any accountability. IMHO fraud is a large portion of publisher business.

On the other hand, ad spenders (people who buy inventory) want cost per action. You click my ad, you signup, then you purchase something, then pay the publisher a cut. FANNG pretends cost per action does not exist.

The current compromise between the two is cost per click. Removing tracking on the click would be a HUGE win for publishers (Google/FB). They could increase fraud and revenues. Ad spenders would be completely screwed spending money on fraud with no accountability.
lmao HN panicking. Quick - flag him! He's hinting at the truth!
Bill Gates: Most people overestimate what they can do in one year and underestimate what they can do in ten years.

https://www.goodreads.com/quotes/302999-most-people-overesti...
Also, HN thread with 50 comments about that Roose column:

https://news.ycombinator.com/item?id=27834324
I tried it, filled up all the data and the end screen with a "plan" stopped 1 year after my current age with chart lines looking kind of botched. I think some calculations may be wrong or something.
I prefer privacy too. But there is something entitled about wanting to interact with a company but keep the details of that interaction secret from that same company.
do you worry any of the links are malicious?
Spanish Fly: What Is It? What Are the Dangers of It?, and Alternatives
>Unfortunately, this has always been true. It is not an artifact of modern economics.

That part doesn't even make any logical sense because there is nothing in economics that requires growing inequality. It's usually political power structures that need growing inequality. I would go one step further and say that growing inequality is bad for economic growth and has often ended in a revolution.
* 9 times out of ten the dark squares go upwards

* agree with this one

* agree

* clockwise is pretty much always on

* agree. microwave (and shower) design has always bewildered me. it really can’t be this hard, can it?

* never come across this

* in my, admittedly limited, experience, most dishwashers start making a gurgling noise when you turn them on, and the door locks up

* that sounds more like a cost/engineering problem than a design one
The situation is actually more complex than you are suggesting. A check box comparison is not useful. I have worked in considerable depth in the streaming space and my comments are based off the design docs of both systems. You should read Twitter's heron paper and Apache Flink design docs.

For eg, storm or samza might check all the boxes, but the design of the system is poor enough that the performance will suck. For older versions of Storm, you should be able to write a multithreaded app on a single machine that outperforms a storm cluster.
I bet a bunch of them did some naïve calculation that said "because digital performs better, we can reduce broadcast power by X, for a savings of $Y, without loss of range", but real-world conditions meant this actually did reduce their broadcast range a little (though mostly in low-population areas they barely cared about anyway).

This may have coincided with lower investment in broadcast, anyway. Replacing the transmitting equipment, don't care about providing as much range as the much older, analog equipment did, because the per-viewer value has dropped enough that it's not worth it to reach rural areas, so you cheap out on both equipment & broadcast strength.
There are a lot of cases where good enough is actually good enough. Python, Java, C#, Go, TypeScript, they are not 'pure enough' to 'too OOP' for some, but at the end of they day, they are good enough to realise the potential that the business process they support requires.
> , assertion to one can be aggression to another,

Not if you understand what the two words mean.

"assertiveness" - the quality of expressing opinions or desires in a strong and confident way, so that people take notice

"aggression" - feelings of anger and hate that may result in threatening or violent behaviour.

Edit: removed 92% of snark.
>IMHO if the project is relatively small (say <500K LoC) a monorepo is almost always the way to go

A typo? You seem to mean that multi-repo is the way to go :)
"The side project myth is getting out of control. Most recruiters and hiring managers will never even open your GitHub profile."

I'm pretty sure some job seekers have figured this out, because I've seen some threadbare github repos put forth on resumes.

I also see a related strategy where they're populated, but in a way that will fool someone who isn't familiar with how GitHub works. I always open them if you give them to me because even a glance can tell me a lot, and I've seen a number now that are basically three-ish forked repos, among which there is maybe one commit from the user total that makes a small documentation change or something. I'm thinking some job seekers may have noticed that it's easy to build a github profile in which you have a lot of impressive stuff on it, but if you dig in, the job seeker isn't responsible for any of it. They just pushed "fork" on a few repos and a token commit somewhere.

I reluctantly suggest that this is probably a good strategy in general, though it may knock you out of the running with an interview with anyone clueful enough to notice this strategy, so, you know, consider the costs & benefits for your situation.
> Then it was never a viable business model to begin with.

I think there's much more evidence to the contrary than there is for your position.

Facebook is absurdly, staggeringly profitable. Uber and WeWork by comparison are the BS business models, needing to break local laws and requiring nation-state levels of VC backing and still nowhere near profitability.
Oncogenic viruses on the surface make their way into the blood stream upon skin penetration. Normally you can digest them if you eat them because they denature in the acidic environment of the stomach.

Molecular mechanisms of viral oncogenesis in humans:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6336458/

Poisons such as Oleandrin, which is a toxic cardiac glycoside found in the poisonous plant, oleander (Nerium oleander L.), interferes in some essential processes within the cell, the most important of these being the inhibition of the Na-K ATPase. This protein enables the cell to exchange the cations Na+ and K+ between the intercellular and extracellular spaces by which, for instance, electric signaling is made possible in nerve cells. Oleandrin binds to specific amino acids in the protein, causing it to lose its function. After depolarization of the cell in which Na+ flows into the cell, the Na+ cannot be transported back into the extracellular membrane, causing the sodium gradient to disappear.
SpaceX does a couple NASA launches a year, for which they make 100-200 million each and have to actually provide a service that costs them a decent fraction of that cost.

They earlier this year had an investment round worth about a billion, which was all dedicated to R&D for Starship and Starlink. Total external investments are around $19 billion [1]

So yeah, some of the NASA dollars probably provide profit to the company that they reinvest in R&D. But a larger portion comes from external investment specifically for R&D.

[1] https://craft.co/spacex/funding-rounds
I don't buy that argument. Join a car pool, buy an electric scooter, or a moped if fuel taxes bothers you so much. In general, I think it is a tragedy that we worry so much about the problems of those poor, poor motorists when our beds are burning.
> If widely circulated, this could be wielded to some effect in a campaign by FB detractors/rivals.

But who are the FB ads rivals that aren't affected in a similar manner by this change? Since the tracking permission isn't specific to FB, wouldn't other players with a similar business model also be negatively impacted?
if the author is correct that the cause of obesity is environmental contaminants, it would be very simple to test this. The author is using lab rat data (the cafeteria diet example) as a main point in their conclusion, so simply adding the chemicals in question to otherwise uncontaminated food and feeding it to lab rats should easily disprove or prove their point.
So laying it solely at the feet of politicians is the real answer? SF has seen a massive accumulation of capital and influx of wealthy residents to its housing market over an incredibly short time span. Huge changes in material conditions like that have infinitely more effect on a city than the stated policy agendas of its figureheads.

EDIT since you added more: it's not about a purity test for different shades of progressivism, it's that a hyper-capitalistic corporate investment market converging on one city is literally the opposite of anything progressivism has ever claimed to be.
I think the parent comment meant that multi-repo breaks down for large project, but made a typo.
You need the diagonal because you are making a new number in (0,1) that can't be in the list by just choosing the nth digit of said number different than the nth digit of the diagonal.
Ask HN: What features would improve video chat/meeting software
Two ideas:

1. A numeric overlay/identifier of participants for easily "going around the table" and not missing anyone. Some software moves the participant tiles around and not everyone's order is the same across participants. Perhaps just tracking and displaying the meeting entry number. If I enter the "room" 3rd then "3" gets associated with my tile.

2. The option to automatically turn off my camera if my mic is silent or quiet and only turn it on when my mic picks up [sufficient] sound (like when I'm talking).
>apparently there's some good amount of propaganda going on in the USA and people apparently believe it.

>Meanwhile people have to pay $5000 after an ambulance picks them up. Or $90000 for semi-trivial medical procedures.

Ironic
> Most recruiters and hiring managers will never even open your GitHub profile.

This is the first thing I do, because seeing the code you write is the very best story of them all. Maybe every person I've worked with who came in with weak skills demonstrated in GitHub was terminated between 2 weeks and 5 months later.
It seems that this is a difficult problem to solve. These kinds of tools don't provide a lot of value unless they have a significant portion of your financial picture. Providing that picture takes a lot of manual data entry. I suppose it could ask more generic questions first (e.g., "enter total cash," "enter total investments," etc.) but that wouldn't be very accurate.
You can't count reals or complex numbers. Real numbers by definition describe objects with infinite precision. In the real world infinite precision cannot exist therefore real numbers are the limit of an arbitrary precision measuring process not real themselves.

Meanwhile natural numbers like "two" most certainly do exist as a quantitative attribute of a set.

Show me how you can count with reals.
It's almost like a trend can change over time. Especially with the rise of vaccines and the progress on pandemic control.
+1

Free tier does not appear to persist data. Please do not make me re-enter the data if I want to get on a plan later...
They are very useful when you've got hundreds of engineers working on distinct projects that are loosely connected. Imagine you have a team working on core libraries, a few product platform teams, and finally a team working on a customer facing feature. The feature team commits to master and a build kicks off (build 1), that build fails for an unrelated issue (say the build node dies) and the build kicks off again (build 2). With multiple layers of libraries supporting the feature team, its entirely possible that a dependency could have changed and the end result of build 2 would be different than build 1.

When each commit shares a common timeline it is really easy to rebuild build 1 with the exact same dependencies.
We are not supposed to discuss this.
Please just accept it as a taboo topic, not only here on HN but elsewhere too.
Probably even Damore would like to be forgotten
But that only works in one direction, no? So it works if you can develop your single repo, but it doesn't help you when you depend on other projects.

I think the best approach would be to have bidirectional links between the projects (if A needs B, then A has the stable version of B and vice versa). The point in that setup would be that "upstream" projects can notice when they are about to break tests in "downstream" repos and act accordingly.
Elon Musk contains multitudes, including a stellar mind for engineering, a credible claim to be working on products that are good for humanity, excellent business instincts, and the talent to come across as an obnoxious asshole.

Seriously: when you have Bond-villain levels of fame and fortune, I expect you to be at least as clever as Peter Thiel in fucking over people who crossed you. Musk just randomly calling people he doesn’t like “pedophiles” on Twitter always feels… I dunno, “small”?
SF isn’t idealistic/fantasy progressivism, it is what it progressivism looks like in practice.
My entire point is that if it was a "fragile agreement" it wasn't in good faith and it was lying and waiting for any excuse to break it, by definition. It doesn't matter what excuse broke it. It was always a bad faith attempt to score some regulatory points and it was never about actually doing good for users. They never should have offered a "standard" for such a "fragile agreement" they didn't really believe in, and everything they said about it was hypocrisy.
It has somewhat worked out for GPUs, if you phrase it more charitably (eg "our chip needs specialized compilers and programming languages to perfom well, but will pay off well enough that a critical mass of developers will use them").

Not that GPUs and their proprietary fragmented & buggy tooling are that nice for developers even now, 15-20 years into the attempt, and the vast majority of apps still don't bother with it. And of course the whole GPGPU thing was just riding on the wing of gaming for most of its existence so had a really long artificial runway.
What helps me is to think: Ok, I screwed up, now let's take charge, figure out what exactly went wrong, and find out how to prevent it from happening again.

I would write a document stating exactly what went wrong, based on that suggest measures and changes to prevent this from happening again in the future. Be brutally honest, but refrain from playing the blame game, do include your own mistakes, be as objective and fair as possible.

You could also see if you can salvage your project in anyway and suggest how to move forward. Usability issues can be solved, technical choices can be changed.

For either option there should be broad support. If not it might give you more insight in the "politicking" that's going on.

Also realize that people make mistakes, nobody is perfect. The best you can do is learn and move on. Beating yourself up over it won't help you in any way. Don't be mean to yourself, be honest but in a kind and empathic manner.

Anyway, it sucks, especially with politics involved, hope you can move on from it. Good luck!
Bitcoin has been around longer than the iPhone. When it started I think we were all still in Windows XP.

If Bitcoin hasn’t yet discovered a killer app, when will it?

But yeah yeah, it took tens of thousands of years between humans seeing lightning start fires and the charcoal grill… if it took that long, I'm sure it will be tens of thousands of years before Bitcoin finds a use. Better keep buying and holding!
NYT complains about that, too.