skysight-inc/HackerNews huggingface dataset:
Most high school math teachers don’t know calculus, it’s as simple as that. Even at good public schools, there is often just one in the math department that can teach it, but maybe also some science teachers could, too. In my school, some of these were great, highly engaging teachers for more basic math classes when teaching average and below average students.
Mechanical metamaterials based on origami and kirigami
CVS, Walgreens and Walmart Fueled Opioid Crisis, Jury Finds
It's all rather ironic because the only places in the world that seem to have this antipathy to mathematics are predominately "white" and anglophone. The rest of the world just gets on with it. There's nothing "whiter" than running scared away from mathematics.
Fauci is the highest-paid US government employee. That's even ignoring the fact that he will make tens of millions of dollars after he ceases to be a government employee. The previous head of the FDA, Gottlieb is with Pfizer already. The guy who replaced him, Stephen Hahn, is with Moderna now. I find it bizzarre how people instantly forgot how profoundly evil US Big Pharma was considered even a couple of years ago. These people will let diabetics die for a buck, and yet I'm now supposed to treat them as the second coming of Jesus, and pretend they can do no wrong.

And I can guarantee you Daszak and a bunch of other hangers on make a lot more than "20K". In fact 20K might not be enough to get him out of bed in the morning.
Cve-2018-1160 Writeup
Look at the first of the linked studies - it’s quite large (national across the USA and uses both between school and between student analyses), so I’m not sure what would make it completely invalid. As you asked, it does also look at student absence rates and engagement, and saw no significant differences - so “boredom prevention” doesn’t seem to typically be a working feature either.

I would suggest that your experiences may not have been the norm. Anecdotally - I was also in a gifted program, and it was essentially a waste of the school’s money. We had an designated educator for the gifted program, and we mostly did things that were interesting… but didn’t really advance our education a lot. Even when we did cover advanced material, it didn’t really make a difference because we would have learned it in a year or two anyways. That assigned educator would have made a bigger difference helping struggling students rather than us.

It sounds like your program was maybe better targeted than ours, or you were a better fit for the model than me and my cohort. But on average, the data seems to suggest that most students are not significantly changed by gifted programs.
A couple reasons, from the perspective of an infectious disease epidemiologist who isn't particularly a fan of Gain of Function studies:

1) "The lab leak theory" is actually a collection of theories, from the fairly reasonable possibility of an accidental release as part of a lab accident down to a engineered Chinese bioweapon. What any individual means by "lab leak" tends to be whatever is serving their political purposes as the time, and they borrow evidence from each other in a way that's really flawed, etc.

2) There's a lot of personal attacks built into the evidence - whether or not Ralph Baric is a likable guy, for example, fed into a lot of whether or not his lab was "involved".

3) A lot of the advocates for the lab leak hypothesis don't come from epidemiology/public health/virology, but from the intelligence community, the tech world, etc. who tended to reach for "Oh, it's obviously this..." and who reacted poorly to the idea that it might not be that simple and straightforward. Both sides of that exchange burned a lot of good will with each other early on enough that the engagement has, I think, spiraled somewhere not particularly productive.

4) It got coopted by crackpots and conspiracy theorists, as well as those interested in abdicating their own role in the pandemic.

5) The biggest reason, in my mind, is that it is a "fast" solution that gets a lot of press, and for which the alternative explanation - the one that has been true for the last two coronavirus outbreaks - is something that will take the better part of decades to resolve, if it ever does. It's also by and large not relevant for the current state of the pandemic. That creates the sense that there's a whole mountain of evidence behind it, when in reality it's a theory that is going to be rather difficult and expensive to falsify, one way or the other.
VHS was pretty mediocre. Any watermarking inside the signal would have been noticeable or destroyed in transmission.

However it's true that the top invisible scanlines normally used for Teletext could have been used for this. My VCR did record them, I was surprised to be able to view Teletext pages at the time of recording, though they were full of distortion.

It would have been possible to filter that out though.

I think at the time VHS recorders were still mostly analog and would have been recognisable from their artifacts the same way a typewriter can be identified once found.
the graphs show rate not time
Try GNU parallel.
We can’t talk about the lab leak theory for the same reason a third of the country refuses to get vaccinated: it became a politicized issue somewhere along the way, at which point people’s brains turn off and their emotions and tribalism take over.
Most factory-made food has preservatives and other stuff that stabilize the food and prevent botulism. In particular many foods use vinegar to increase acidity and make it impossible for botulism to bloom.
I'd have taken exposure over nothing. I had to teach myself - as an adult - calculus, linear algebra, probability (outside of the ever-so-brief introduction in school) and trigonometry. I personally don't think I did a very good job as my own teacher either. 3Blue1Brown was a lifesaver and every now and again I try to brush up on the topics - not for my benefit at all but for my child's benefit in the future.

I think schooling absolutely failed me in almost every regard once I made it past the 4th grade. Half of what I learned isn't even true anymore or were partial truths/mostly lies to make it easier for a 5th/6th grader to grok and they'll be told "the truth" at some point later in high school or college only to never be told the truth or not have the opportunity to attend college where you finally would have been told the truth.

Exposure to something is the first step in learning about something.
Actually the US and the wider world has had access to this sort of stuff because peer review means sharing knowledge.

https://thevirginiastar.com/2021/06/07/american-higher-educa...

Covid is a fart in a room and China was first smeller so first stinker.

Waste water samples from other countries show it was around months before China went official so were those other country's just keeping quiet?

Besides, its not like you can stamp Made in China, Made in US on viruses so Covid is resigned to the conspiracy theory books, and even if someone came forward to own up that it was some state biological weapon, the country in question can just play the mental health card on the whistle-blower. Very few people can afford to step out of line because it would put their family at risk and even if they could afford, there is always the getting knocked over by a bus risk.

So many ways Covid can be plausibly spun, its probably just best to keep abreast of the news, reduce risks where possible and get on with life so you don't have any regrets or at least have lived life as fully as humanly possible however that might be.
I came across one of my favorite math problems in high school and it blew my mind.

ABC
DEF
+ GHI
-----
123J

Each letter represents a distinct digit 0-9. What is J?

Of course you can write a short program that iterates through the possibilities. But there is also a very elegant solution that fits in a tweet. (If you don't want to try solving it, or have tried and have given up, here is the solution: https://twitter.com/joe_antognini/status/1436412147324502016)
> Sounds like the difference is in the UK a teacher teachers a cohort of students through all subjects, not a subject for all cohorts of students. We have one maths teacher who teaches you everything.

Really? That's very interesting.

I had a different math teacher every year / level. I'm at a smaller independent school, where you may have the same math teacher a couple times but people definitely specialize-- we have the teacher who teaches mostly 6th grade math and pre-algebra, and a teacher who mostly teaches algebra I and geometry, and so on.

On the one hand, you lose continuity. But you also get a fresh start each year, with a new teacher who probably teaches the things you had trouble with in a different way...
It is everything.

Customers too risk-averse, class boundaries still endemic (it is amazing the US tech companies went into this, Google/Facebook/etc. seem to have hired the Notting Hill set as soon as they came to London), companies too conservative about investing margin in sales, very relationship-driven sales culture (as opposed to product-driven) that is closed to "outsiders", reluctance to cold-call, etc.

It is cultural because it can be anything else, do people from the UK have a different biology? No. I think if you look at politics in the UK, it is self-evident that the culture of the UK is not exactly entrepreneurial...unless you believe that a group of probably 30-50 people who went to the same school, went to the same university and largely studied the same course should rule the country...it is very weird.
Solana and affiliated organizations probably owns 999 validators, that is my guess
Looks like here's the source code of the emulators:

8-bit chip and system emulators in standalone C headers - https://github.com/floooh/chips
It's totally relevant. Valuation for pretty much everything speculative went up many times over just the past two years.

Startup valuation is no different. Very unlikely to be a new normal, but a brief period of hysteria as has happened many times in history.

Not speaking to the Vercel case by any means... Not aware of their prospects or otherwise that justifies this value.

We'll pretty soon see those who have been swimming naked get crushed when the tide goes out. Likely happening around now/start of next year with Fed shift to tightening, and effect of 2020/21 transfer payments waning.

Vast majority of tech valued at 100x sales have no justification as an investment. It's dotcom 2.0, but with more legitimate businesses that are simply far overvalued.

EV is just the most obvious and visible manifestation of this. Rivian at 150B value with 0 sales and many competitors. You have to be pretty delusional to invest in things like this and expect not to lose big. And best case you may 2 or 3x many years from now? What kind of risk/reward tradeoff is that?
Apple apologists are never going to formulate their own opinion. It's best to not engage in the first place, it's just an exercise in corporate handwaving.
You seem to have a very utilitarian view of food that most people do not have: the average person does not quantify food purely in terms of their nutritional value, and enjoying the taste of it is a pretty big factor for if they want to eat it every day or not!

And again, comparing subsisting on "$30 of rice and beans" is a completely different proposition to "nations which rely on plant based diets": people in these nations are not eating unflavored rice and beans every day.
It is even more frustrating to see the dogmatic approach to the fact that the vaccines are less effective than they were made out to be. The more this becomes clear, the harder it will be to keep up this narrative. I assume that you, just like most others here, wants to see these epidemics and the pandemic end as soon as possible with as little damage as possible? In that case it is adamant to be objective in the search for a way out. Current data shows that the vaccines which are now available don´t provide the level of protection against either infection, hospitalisation or death which they were supposed to do so an alternative strategy is needed. This can include a new vaccine - there are many in the works - but it has to include a way to keep society running without imposing authoritarian mandates or we stand to loose much more than just the people who succumbed to the disease.
They're not wrong about downsides to bitcoin, and there are many more they haven't mentioned. I tend to think that regular currencies are better than bitcoin for nearly every use case that doesn't involve evading currency or payment regulation.

Yet I can't escape the feeling that the IMF is trying to protect its territory and monopoly.
They would in my opinion. I was a tutor in high school and college for algebra. I worked with people some people who struggled. They all eventually got it if they wanted to get it, which they generally did to not get held back :p. You just have to work with them and truly understand what they are not understanding. The big issue is concepts are not learnable in isolation. You said vectors are basic, but are they? They were initially just abstractions to model sets of physics problems. Without the context, its pretty difficult to understand them IMO, especially things like dot products. "oh, i multiply two vectors and I get a number? what? Oh and that number can be described as the multiplication of magnitudes of the vectors multiplied by the cosine of their angle? Oh how do I get the magnitude? What's cosine again? etc." It goes forever and generally you'll find that people will struggle with basic things because they never had an opportunity to sit down and genuinely internalize those ideas.

Everything builds on other concepts and people's misunderstandings generally came from not truly understanding the basics. Its hard to personalize education at scale though.
+1 Not bad, your simple pool improved performance from about 10.9 secs to 1.4 secs on my laptop here. However, it does break the stated rules for the benchmark.[1] The Java version doesn't use a pool and doesn't change Tree pointers into ints as your version does. The C/C++/Rust versions are required to use a "library memory pool." The rules state,

Please don't implement your own custom "arena" or "memory pool"
or "free list" - they will not be accepted."

Donald Knuth uses integers instead of proper pointers in the source code for TeX for maximum portability and performance so your technique is legit used by master programmers but in general replacing pointers with integer indices into arrays only works for monolithic programs of small to medium size. For example, could the Chromium maintainers rewrite the 20 million lines of C++ into Golang replacing most pointers with integer offsets into arrays for performance? No, impossible with current tools and practices, the technique won't scale to that, so this benchmark rule isn't totally stupid and unfair. This binary trees benchmark was originally devised decades ago by Hans Boehm, a notable GC researcher, as a way of testing GC performance that he as a GC implementer found informative.

[1] https://benchmarksgame-team.pages.debian.net/benchmarksgame/...
Yes. Still a great uni but known more for the people who studied and went elsewhere than the people who stayed (in AI).
I think there’s a distinction between “people will do it even tho its illegal” and “illegality prevents mass adoption” - the government still achieves its goals if the only opportunities to transact with crypto are mired in legal risk.
Today, I hopped into a Twitter Space called "web3 for gaming" and from the moment I joined until the moment I left five minutes later was talking about how crypto payments need to be better on mobile.

This feels like when web2 was coalescing as an idea. A lot of people were trying to shoehorn their pet technologies into the discussion. XML was holding on for dear life. It's ridiculous and completely divorced from the topic at hand. My only explanation for the behavior is that it's difficult to see the obvious absurdity when you're deeply invested in a particular outcome.
How to make railway timetables (with graphs)
The main idea with this is to build validation by showing that somebody else did similar/analogous thing and succeedeed. E.g. "What Y did for Z, we will do the same but for X". And then the key point is in explaining how it is related and why it makes sense in your case to apply the same strategy.

We learned that innovating on the product is already challenging enough, and if we also innovate on the business model / adoption strategy etc it just sounds too risky. The best thing here is just to follow on somebody else's footsteps, which also makes it much easier (both for investors and ourselves) to imagine what the future will look like.
That depends on what you decide to do about it.

1) I've seen people call for a ban on research at all on BSL-3+ pathogens.

2) If you "accept that it was a lab leak" you are implicitly accepting that it was not a natural event - which is going to cause you to focus more on long-tailed, low-probability events like lab leaks, and less on zoonotic transmission events.

Which if you're wrong would be a serious problem.
The board and officers still have a fiduciary duty to minority share holders. Even if they can vote the company is worth zero and issue 100x as many shares, a court can say the company wasn't worth zero and they need to compensate the former owner.
TPMs are also controlled in Russia IIRC.
I’ve used quite a few different registrars over the years, and the only one that really stood out as bad was in fact GoDaddy (tacky UX* and dark patterns in registration flow). Most other big name services you choose will be fine; personally I’ve been using Google Domains… but I’m not exactly a Google fan either. As for historical reasons people dislike GoDaddy, here’s a starter: https://en.wikipedia.org/wiki/GoDaddy#Controversies

*NOI if you’re reading this, Darren
From the article:

On national standardized tests, California ranks in the bottom quartile among all states and U.S. territories for 8th grade math scores.
Ah yes, be sure to base64 encode your secrets before commiting them to the git repository, everyone!
Can you explain how web3 solves any of your bullets?

If you are trying to say that web3 will prevent platform holders from banning you from their platform, then good luck with that. Any platform can and will ban you and have complete control over their platform. Thinking web3 is going to prevent that is naive for many many reasons. If Facebook bans me then web3 isn't going to allow me to post on Facebook still. Same with Twitter and Linked In.

If you are saying that web3 solves these by making it so that these platforms aren't in charge of my identity, well they aren't today so I'm not sure what the deal is. If gmail bans my account it's not a huge issue because I use a custom domain for my email, so I can route it to another provider or host my own. If Facebook bans me then I lose contact with family on there but I don't lost my identity because FB isn't in charge of my identity. same with twitter or linked in or whatever.

All these problems you list are solvable today with the decentralized web we've had for decades. There's a reason centralization has happened on these platforms, and it seems like all the web3 talk I see is naive to that.

Edit: Also Keybase is a great example using cryptography to solve the identity problem without a blockchain and with some level of decentralization (keybase's servers are centralized but the actual identity is all based on PGP and GPG that's been around for a long time).
Inflation is a pressure to spend, people with something to sell enjoy this benefit, everything in moderation.
The title of the article is:

My Book Was Censored in China. Now It’s Blacklisted — in Texas.

blacklisting (wiki)
https://en.wikipedia.org/wiki/Blacklisting

Blacklisting is the action of a group or authority, compiling a blacklist (or black list) of people, countries or other entities to be avoided or distrusted as being deemed unacceptable to those making the list. If someone is on a blacklist, they are seen by a government or other organization as being one of a number of people who cannot be trusted or who have done something wrong. As a verb, blacklist can mean to put an individual or entity on such a list.[1]

Are you saying the book is _not_ blacklisted? Or not blacklisted in Texas? Or, since it's available for sale in Texas, it is not, in fact, blacklisted?

...ah, i think i see part of what your issue is -- he says in the text of the article that he's never been "censored" in the US, with the implication being that he either has now been censored in the US might be soon, based on the fact that his book has been blacklisted in Texas, and therefore is being "censored" because of how blacklisting and censorship work, and you don't buy that "censored" is the correct word here -- it's not accurate -- it just some people criticizing a book. I guess that's one way to think about it. To me, if someone wants to criticize a book, fine, if some group wants to criticize a book, fine, but ones a legal authority criticizes a book, then it moves towards censorship very quickly, as i believe is the case here.

the following paragraph sounds like something from orwell - how he described how free speech and censorship actually work in practice -- it's actually extraordinarily rare to see physical violence used to suppress anything -- it's more of a learned response:

The political historian and commentator Anne Applebaum wrote in “Iron Curtain” (2012) about how the Stalinization of Eastern Europe depended not primarily on the gulag and the firing squads, but on the intimidation of people who felt compelled to spew the same idiocy they heard, pursuing a grotesque conformity. “Actual censors were not always needed,” Applebaum told me in a recent email. “Instead, a form of pervasive peer pressure convinced writers, journalists and everyone else to toe the party line; if they did not, they knew they risked being ejected from their jobs and shunned by their friends.”

Guess I could see arguing the point, but....don't agree, and don't think it's a strong point you're making. Really, it's an extremely weak argument, imo.

...also, if we're being super-strict, it seems like "censorship" is the process of reviewing material for possible expungement of certain material, whether or not that expungement actually needs to happen. for the authorities, most authors will have already learned -- possibly the hard way -- that they should self-censor, and they do, but they would still be subject to the censorship process.
I was wondering why my dodge dropped in value so fast. I kept it over 8 years so it averaged out but those first years were tough.

I had to repair a thermostat and condenser in those 8 years, but I found it was much easier to work on then my brother in law’s Ford - the thermostat was impossible to get to without destroying your hand on that one.
Ugh, maybe teach abstract algebra first like France did?
@dang yes please!
Since mass increases near the speed of light, wouldn't it become a ringularity?