skysight-inc/HackerNews huggingface dataset:
> and then a Bank which is a mapping of Account to Set<Customer>

The problem is that this only lets you get customers from accounts, and not vice-versa.

And if you add a Map<Customer, Set<Account>> to the Bank, you now have to ensure the mappings are synchronized at all times. Which, to be fair, is very straightforward as long as Bank is immutable, but still kind of annoying.

But considering how incredibly common many-to-many relationships are in business logic and especially in SQL, I'm constantly surprised that there isn't a de facto standard, efficient data structure to represent them. That speaks to how entrenched cyclic relationships are in software engineering, I suppose.
I moved 2 years ago to a small village in New Mexico. It's not technically a dark sky site (we get some light to the north from Santa Fe), but most nights I sit outside (hot tub) and stare up at the vast expanse. Of course, it never looks like the long exposure shots, so that mythical milky way isn't part of the view at all.

Nevertheless, I've already noticed how much more I think about things related to what it is in the night sky. The slow movement of Orion. The so-far constant relationship between Aldebaran and the Pleiades. Learning (some) of the names of the most prominent stars. Being reminded month after month of how the lunar cycle changes the experience of the night sky, even on a day to day basis because of approx 1 hr shift in "when the moon is in the same spot".

I've spent plenty of time below dark skies, but have lived in cities more or less my entire (57 year) life. It's only been very recently that I've really started to have some sense of what is gained when one has the an experience of the night sky that is more like what our ancestors would have experienced: how it shapes one's sense of where we are in space and time, of how much vaster things are than our small lives (I say this even living in the American west, which encourages this experience all by itself), and of relationships in the sky that we can see but not really understand (without science and very complex and vast equipment).
Don't let me come across like I'm defending Robinhood, which is an online casino dressed up to look like an investment application.
Why does this say (2021) when the last commit was in 2014?
I was expecting the title to be changed because you wrote 'can edit', probs should have said you were going to evaluate a change in title instead.
I'd argue that this is a feature, and not a bug. It gives the lower-income worker leverage to walk away from a bad job without fear of starvation.
Some of the things listed are sales techniques I expect from a business. If businesses want to set themselves apart by being more straightforward, that's another way to sell.

I'm left wondering if the authors take advertisements at face value as well?

"After extensive research, we found that the stain could be removed, but not as easily as shown in the TV advert. As academics, we conclude that this is dark and deceptive."
As a newbie to using Tridactyl, I installed the stable version (1.20.4). Anyhow, I tried running the linked installer for the native messenger and noticed that GVim now opens with “fileencoding” set to “latin1”. This resulted in conversion errors (I have “encoding” set to “utf8” in my “vimrc”) but I was able to get around that by running “:x ++enc=utf-8”.

I’m now able to quickly and easily open, close and re-edit text-boxes containing UTF-8 character. Thanks.
> this delineates between facts and personal experience as if personal experience doesn't occupy the same space as facts

As a matter of neuroscience, from a quick search it appears that they do not, [0] although as a philosophical point sure, personal history narratives consist (at least partly) of beliefs of facts.

[0] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2952732/ (or if you like paywalls: https://dx.doi.org/10.1017%2FS1355617710000676 )
I don't quite follow your argument, I could s/QUIC/HTTPS/ and s/will do much to improve the performance video streaming from corporate services/will do much to improve the security of corporate applications/

Can you elaborate on to why QUIC different from HTTPS-only in that regard?
Struggling to put the peasants on the reservation? Make things hard enough, and they'll vote for it themselves!

UBI? Capital idea!
No more than any capitalist society. The gulf states are just an extreme examples of exploitation, but capitalism necessitates treating a slice of society as expendable labor.
Or how about the big elephant in the room that nobody seems to be bring up; the effect on small businesses that can’t afford to pay employees $15 or $20/hr. So, instead of helping the poor, these policies raise unemployment and actually are a detriment to the overall health of the economy.
Think the title is clickbaity? Wait till you read the article.
This is for stock sales which they did not restrict. Robinhood stopped the purchase of stock which does not require a collateral because the money is coming directly from the users cash balance. Don’t believe whatever they say, RH action was specifically to stop the short squeeze.
I disagree, what you describe is the extreme version of what I am worried about.

I'm not worried that about an external entity owning my entire mind. I'm worried about a society in which institutions and corporations have ownership over some parts of what I know.

And this is already happening, so many engineers and academics have signed NDAs, essentially giving up ownership (the ability to determine how to use) of certain information they have learned, in some cases even their own original ideas.
Unfortunately (since otherwise I’d be using one) both are unusable as practical replacements for Android or iOS.
I'm also in a European country and using my national bank for trading. In the end, my bank is using JP Morgan for NYSE trades, so in the end would be up to JP Morgan to block trades. But everything seems to have worked fine here all week.
Hi HN! I've been working on Nodewood for a little over a year now in my evenings and weekends, and it's finally at a point where I want to open it up in public beta to get a broader set of customers and feedback.

The idea for Nodewood comes from the fact that every time I wanted to start a new web app, I'd have to code up a whole bunch of things from scratch -- user authentication/administration, subscription payments, the whole web UI scaffolding, etc. I figured, instead of half-assing it every time, I could whole-ass it once, and then end up with a product that other people might be interested in using as well!

There are definitely competitors in this space (which I'm excited about, it shows there's a market), but I think Nodewood has a decent niche targeted by using JavaScript for the front-end and back-end and really focusing on the code re-use that allows for.

I'm happy to answer any questions, and to hear any feedback you have!
I see no reason why a direct quote from Andrew Yang (probably the best-known proponent of UBI at the present time) should be flagged to death in this conversation. Vouched -- which doesn't indicate that I necessarily agree with him. I just hate people who are making a valid contribution to the conversation being mobbed down.
SE Linux is enabled by default in Debian, Ubuntu, Fedora and Manjaro (iirc), so I stopped reading at the introduction. The exploit presupposes the lack of this basic hardening.
Strong protections for unions are superior to minimum wages.
Yeah....except all the more legitimate brokerages didn't limit anything. TD Ameritrade made me place limit orders, but that is not even close to the same thing.

Fidelity was unaffected.
Former a16z partner and now independent analyst, Benedict Evans [1]:

> Every year, I produce a big presentation digging into macro and strategic trends in the tech industry. This year, ‘The great Unbundling’.

This is a 134 slide presentation:

> Covid brought shock and a lot of broken habits to tech, but mostly, it accelerates everything that was already changing. 20 trillion dollars of retail, brands, TV and advertising is being overturned, and software is remaking everything from cars to pharma. Meanwhile, China has more smartphone users than Europe and the USA combined, and India is close behind - technology and innovation will be much more widely spread. For that and lots of other reasons, tech is becoming a regulated industry, but if we step over the slogans, what does that actually mean? Tech is entering its second 50 years.

[1] https://www.ben-evans.com/
> But I’m certainly not anymore.

Can you explain why, and what you would do differently?
That already happens with income tax. That’s exactly what the Trump tax cuts accomplished.
I've seen people who opened RobinHood accounts after all of this debacle with the forced selling of shares, etc.
Decentralized infrastructure with equal access is the solution to avoiding legislation here, people should be able to access the public forum and markets and companies should have the right to not associate with individuals not protected by human rights laws. Technology can solve this, and we are seeing money being spent towards this decentralization flooding towards building it just in 2021 alone. Interesting to see how a battery of solar houses + starlink + a drone port could allow decentralized communes to start popping up.
by beta slippage you mean volatility drag? On a risk adjusted basis, upro is definitely a loser due to volatility drag and high expense ratio. However, you can easily calculate optimal leverage ratio in order to maximize the geometric growth of your portfolio. The equation is:

lev = E(r) / Var(r)

So if the expected return is 10% and the expected volatility is 10%, optimal leverage to maximize geometric growth is 10x.

This of course is much too high and the risk of losing everything due to excessive kurtosis and downside skew is very high. Like the everything else in finance, fundamental sin of that formula is assumption of the log normality of returns.

However, is 3x too high for the long term? I dunno, but over long time periods, a pure 3x leveraged spy portfolio is going to outperform significantly. The problem is most people will be unable to weather the storm as you can easily lose half of your money in a week.

I wouldn't hold pure spy 3x and wouldn't exactly recommend it, but from a mathematical perspective it is a defensible (as in, you can make cogent arguments for it) long term investment.

On the other hand, I would probably recommend 1.5x lev or possibly even 2x lev to certain people.

As a quant, I approach these things like leverage from a mathematical perspective. It's important not to have an emotional reaction. There are very smart people running books that have 10x leverage but you would never be able to guess by looking at their volatility. It's all about the factor exposures, net delta, etc.

For example I've seen 15x leveraged delta neutral books that have absolutely insane Sharpe ratios (>15) and annualized volatility of less than 5%.
I agree that humans ignore the views that do not support the narrative they decided is true or they deem unlikely. I'm not following how is that relevant.

I do agree that fundamentals (for whatever it means) are not sufficient for success. In the end of the day, investments are based on speculations about the future. The reason the fundamentals matter is that they provide some guidance for your speculations. The basis which you can build your narrative upon. Sometimes they can mislead you, often things happen you missed or couldn't predict (e.g., a pandemic), etc.

Finally, I also agree (if that's what you meant) that some narratives people follow are not based on fundamentals, but rather based on their biases or whatever someone else may have told them. But if you ask me such investments fail more often than not.
You need to re-read the comment you’re replying to.
Why did the collateral requirements shoot?
N.b. in “An Essay in aid of a Grammar of Assent”[0], John Henry Newman makes a distinction between real and notional apprehension that would, I think, be useful here.

[0] http://www.newmanreader.org/works/grammar/chapter4-1.html
Could be, I'd love it if anyone else could confirm. For the record, I've tried to create graphs like these in Excel, and I've struggle getting them just right. So the question I have is whether it's just because I don't know Excel well enough, or whether I should be using other software.
Log-structured merge for solid-state drives [pdf]
This is just not true. They do have to post collateral for purchases, and the customer's own money cannot be used as the collateral.
Possibly Relevant (if not for the OP, for others):

Why a Typical Home Solar System Does not Work when the Grid is Down,

https://www.sevarg.net/2018/05/20/why-typical-home-solar-set...

Past HN Discussion

https://news.ycombinator.com/item?id=17659294
Show HN: React UI Boutique, responsive UI elements built with ChakraUI
I’ve launched early access for React UI Boutique. It is a set of beautiful UI components built with Chakra UI and Framer Motion. You can use them to jump-start your UI for React projects or get inspiration.

I am releasing the project with:

- 150 components

- Source code preview

- Exporting to NextJS or Gatsby starter

- Page preview and simple drag and drop builder

I will focus on getting 300+ marketing components first and after that, I will start adding dashboards and full-page layouts. There are a bunch of other things coming!
At least, make them equally easy.

It's just so strange that marriage is super easy. Divorce is like several months of processes (even both sides are amicable).
What do you mean by one-way functions? If there are more possible inputs than outputs, then it's not reversible.
> The system has its origins at a time when only land owning white men (by definition a minority at the time)

And even then, it was highly debated against, if I remember correctly even James Madison himself was against it, to say nothing of the anti-federalists.

In the end Madison saw it as a compromise towards the States, but after 200+ years I think the anti-federalists were right on this, it ended up like an aristocracy-like thing with too much power vested in its members.
What CPU are you running it on and how many cores are being used? Are you also in really large rooms like Techlore and Matrix HQ? Because I think I'm in all of the largest rooms (and a lot of the smaller ones)
There were a few experimental HTTP/2 over SCTP implementations. It worked pretty well.

But since the current NAT infested Internet requires smuggling SCTP over UDP anyway you may as well go all out and use QUIC which collapses the various protocol layers into a single, more efficient protocol.
So HFT is not absurd because it lowered transaction costs for retail investors. What mechanism did it achieve this by?

I call it absurd because computer algorithms trading stocks at the microsecond level seems completely divorced from the theoretical basis of “investing.” I don’t understand how it makes sense on a theoretical level. Reducing transaction costs doesn’t seem to explain that.
Fair enough. Would rather not get into that one, but the world of finance doesn't exactly have a good track record of playing nice or even by the rules...
You dealt with it when you eg had a Wachovia bank account before they became Wells Fargo. You saw it happen en masse in 2008.

FDIC guarantees funds to the bank. If the bank fails FDIC ensures YOU continue to access your account. If this means taking the bank into receivership and changing owners so be it. You can go to the FDIC website to see what banks have failed. Many do over the course of a year but the account owners are never at risk outside of the insurance amount on a single deposit account.

I hope you don’t keep more than 250,000 in an fdic insured account without additional insurance (which is silly because you could just open another account at the institution for additional coverage)
For what it's worth, arbitration filing fees can be calculated at https://tools.finra.org/arbitration_calculator/ - they seem to start at $50 for specified damages, and $1575 for unspecified damages. (Obligatory: not a lawyer, not at all recommending that anyone do this without consulting one.)
I'm not sure how it helps here. User-level access in enough, isn't it?
I agree with most of the comments here about how UBI == negative tax, its really just changing the names of transfer payments in the economy.

That said, the really appealing thing is that it allows wages to be unbound from the question of supporting the poor. If people are below the poverty line you can raise UBI, but you don't have to put your thumb on the scales of the labor market.

But to not just re-create welfare, you have to completely dissolve the tie between UBI and taxable income. And to do that effectively you boost the marginal rates above your cut off point.

You could plot that to show how much the UBI was a net increase to your annual income and then design the tax rates to have it be effectively 100% reclaimed as tax after $400K AGI or what ever number you pick.
Whois does seem a little more flexible than dict. Able to delegate and recurse in answering a query. Let's add some flags
The job market is not a natural phenomenon like gravity. It is essentially a societal construct already subject to regulation. If it produces outcomes we - its builders and participants - don't like, we can change it. It's true that supply and demand will always be factors, but we can set boundaries.

I'm not proposing any particular change here myself, i just want to push back against that fatalistic attitude.
They did shoot up in the app store during this negative publicity. It could be that a vocal minority just don’t matter.
Indeed you'll find that places with high degree of union power often don't have minimum wage and far less interest in UBI, because there tends to be tariff agreements and welfare systems in place that makes these things seem rather redundant.

The continuation of poverty in most of the developed world is a choice, and one that people keep voting for. As long as people keep voting to maintain poverty, it's a relatively pointless academic discussion.
Indeed, one intercepts and terminates the TCP (or now UDP) session. No version of TLS is immune to these middleboxes.

I suspect I'm being misunderstood. I don't intend to suggest these pasky middleboxes spring up randomly on the Internet and anyone is at risk. These are deliberately installed on the edge of corporate networks, and their sole purpose is to intercept, unencrypt and filter traffic.

There's no technological solution for a middleware box that emulates a client to servers, and emulates a server to clients, and is operating exactly as designed.

This shouldn't be new or surprising or groundbreaking to anyone. It's just a fancy name for a poorly implemented proxy.
America is at risk of running out jobs, not at risk of running out of work.

It's all too easy to see a lack of infrastructure jobs, for instance, as a signal of a lack of demand. It isn't. America has crumbling infrastructure and a lack of jobs to fix it at the same time.

China turning off the trade tap will likely also stimulate the creation of jobs. iPhones will need to be made at home at some point in the not too distant future and they will still need plenty of people to do so.

Wealth re-redistribution will also stimulate demand, creating jobs. A lack of demand caused by a lack of wealth is not a "true" lack of demand.

When society starts lowering the retirement age to 50 and nobody frets about inflation ever - THAT'S when you know that full time work is really drying up. Not happening.
Do you maybe have some books you could recommend? I have a strong math background, so that’s not a problem.

I have a hard time finding courses or books that cover how these instruments work in some depth.
> I think small states suddenly finding themselves largely powerless would consider secession if that were the case.

I have little doubt they would, and in doing so start a war. After all, it's happened before, and many people are plainly agitating for it now.

It's the "my enhanced privilege or your destruction, choose one" argument, which is a clear demonstration of one way the system codifies structural inequality and is transparently anti democratic. In a similar way, corporate lobbying distorts democratic representation, and by all appearances, they overlap quite a bit, differentiated only by the industry sector and which Senator they support.
Pipelining, HTTP/1.1-style, not necessarily SPDY, HTTP/2 or QUIC-style, can effectively counter this sort of fingerprinting that relies on analysis of request-response sizes.^1 I have used HTTP/1.1 pipelining outside the browser for bulk data retrieval for decades. Although I do not normally randomise requests, the UNIX-style filters I wrote to do pipelining could easily be used for this purpose.

1. https://blog.torproject.org/experimental-defense-website-tra...
I believe the original RavenDB was based on ESE (ESENT).
Isn't the another significant different in the logistics of distribution?

For UBI, you need to / get to have a direct line to every person/citizen. For NI, they come to you.

I honestly have no idea which one is better/easier from this perspective, it just seems like the logistics implementation is another significant difference.
Sports alone are a huge reason that keeps many people on their cable bundle--and it tends to be something a lot of people want to watch on their TV rather than a computer.

>It seems that Millennials love streams and subscriptions, and everyone else is rethinking whether that's a good idea.

I'm a bit skeptical of a lot of generational stereotypes. I think many people are having some subscription fatigue especially with video. But I can't say that I've seen a lot of evidence that Gen Z is particularly addicted to accumulating "stuff" especially media in physical form.

e.g. https://www.rev.com/blog/how-gen-z-and-millennials-consume-v...
I didn't realise fsync syncs the whole fs. This explains some write cache issues I've been having writing real-time data streams to sometimes slow SD cards. This change would solve my problems rather than create problems. But hey now I can fix it anyway
I don’t think so. Their settlement collateral deposited with the clearing house is unrelated to their own profit, loss or debt. It’s to cover customer trades in the event of a customer defaulting on settlement.

The collateral can be thought of as more like “server capacity”. Their customers’ demand for usage of the collateral exceeded what was available and they had to reject new trades with, continuing the analogy, an HTTP 429. That doesn’t mean that they’re suddenly insolvent.
Just luck. Trade Republic, a Robin-hood-alike in Germany, also had to shut down GME purchases.
While we're at it, should we ban email apps as well? And probably the Internet itself and go back to "safe" walled gardens like AOL, since there are almost certainly bad people on the net?
One interesting feature of the Lisp microprocessor is that it doesn't have an ALU. At that time an ALU was a very large part of a processor design and the idea was that Lisp didn't need it and not having one would allow the project to fit (barely) in the limited area allocated to each student.

You can define numbers from scratch in Lisp by using lists and having their length (for example) represent the number's magnitude.

If we define the empty list as ZERO, and the successor of a number N as (CONS 'S N) we can build a whole math library from there:

(DEFINE ADD '(LAMBDA (A B)
(COND
((NIL? A) B)
((NIL? B) A)
(T (ADD (CONS 'S A) (CDR B)))
)))
Many facts are universal claims that are actually pretty hard to prove. It can take many scientific studies to establish a fact. It's often not easy to figure out what to believe.

It's also often the case the whoever is asserting a fact didn't figure it out themselves. They are repeating someone else's assertion. Often, they misunderstood or simplified.

With personal stories, it's simpler: do you believe the person telling the story or not?