skysight-inc/HackerNews huggingface dataset:
WiFi routers will hop to less congested channels automatically these days; the odds that your neighbourhood has lots of WiFi base stations you can see, but there is still a frequency that's almost entirely free is _very_ low.
Of course it is heavily subsidized. Everyone knows that all our education is paid through taxes.

And that is how it should be. Because it makes a better society for all. More highly educated people gives more productivity and prosperity for all. That it isn't your parent's wealth that decides what school you can go to decreases inequality and we get less people that feel that they never got a chance in life.
Chat by Stream
'Extraordinary' 500-year-old library catalogue reveals books lost to time
I really, really, really like org-mode. I've used it for more than a decade. I've written self-published books with it. I use it for capturing ideas. For writing Reveal presentation slides. My database of links. I use it as a lightweight kanban board for personal projects. I use it for generating technical documentation mixing graphs, code, and prose.

But most of that isn't possible without Emacs.

As a markup format I wish it was more widely used. The promise of org-mode is that text is the best format for storing your data in. However to properly read more than the surface markup language of org-mode requires a significant amount of software. And very few editors or software packages exist outside of emacs work with it.

And so lacking any other features of org-mode it's markup language isn't any more impressive or useful than any other and is more of a matter of preference. It would be nice if more software packages supported the org-mode markup syntax but I wouldn't say it's the most "reasonable," even given the arguments in this article.
Anak Krakatau: Collapsed volcano's tsunami simulated
This is the original grey:

https://i.ebayimg.com/images/g/O68AAOSwg1JcQlyT/s-l640.jpg
If anyone is interested in OMSCS, I recently wrote up some of my thoughts about being in the program:

https://medium.com/@mycahp/thoughts-on-the-omscs-program-at-...
The latter yes, but the former would be like https://com.
Also from NZ. Is 'file taxes' a synonym for a post-facto 'tax return' when the government overcharges, due to charitable donations etc? Otherwise I can't imagine any reason why I as an NZ employee would ever need to consciously think about _paying_ tax :)
A large chunk of US economic activity depends on trade that travels these sea lanes. Just because the South China Sea is far away doesn't mean that the US doesn't have serious interests in the region.
USA Today is live streaming a presentation about this from the National Science Foundation and they seem to be taking the point of view that Einstein's theory of general relativity has held up SO FAR. There is still quite a bit of research to do on the image / data which means the theory could be further proven or disproven.
True. That creates sudden interest and with good reason. I don't have much experience with this but colleagues are furious. DICOM is often criticized and I know at least some manufacturers that have questionable security policies for online data exchange. I believe people are happy if it just works somehow, because some applied standards are older than TCP.
There are 6. It's an international accomplishment.
They do not have the same features, and undoubtably the reason for that is because some users needed features the other doesn't have.
Having to use full threads in some cases and core.async in others pretty much defeats the purpose. Core.async is just nowhere near as good as goroutines. It'll continue to be like that until Project Loom finally has a release.
The less code you write the less you have to maintain.

Or at least that's how I understood this. Not attempting to save the few kb of network traffic, rather trying to reduce the complexity and the amount of code one has to maintain in the future.
RAM/ROM was commonly not measured in binary in the early days, thought it did soon became ubiquitous that they were.

I know it wasn't unheard-of for hard-drives and other large storage (tapes etc.) to be measured/sold in binary units, but I'd say it was most common by the time that the public at large cared at all what a hard-drive was for them to be measured in 10^3s. There was also the concept of formatted and unformatted capacities, which is not presented to users these days (the drive in my old IBM XT was 13MB unformatted, an odd figure in both binary and decimal units).

Floppy and disc-cartridge formats were a bit of an odd mish-mash, often even mixing 10^3 and 2^10 units.

Flash was usually measured in 2^10s early on as partly as it was thought of more as non-volatile RAM than anything else and partly because it was manufactured that way. And as you mention, modern ware levelling and bad sector masking means that there will be a difference between visible capacity and actual chip capacity at which point it becomes difficult to predict what any particular controller can be or will be configured to do.

Getting less than the decimal amount might miff me a bit, but if making images it has always been best practise to drop a couple of % in volume size to account for one drive not having quite the same exact size as another. The same best-practice recommendation holds for volumes for RAID too: always limit the size to a little smaller than the maximum (either by using a partition as the block device or (if supported) telling your RAID controller/software to make the volume artificially smaller) in case your replacement drive when one fails in X months/years time isn't quite the same capacity.
After .amazon will be be getting .google, .microsoft, .apple, .foxnews, .wellsfargo, .jpmorgan, .walmart, .honda, .yc, .tesla, .crocs, .beanies, .friendster, .myspace, .etc?
A Chevy Volt would be perfect for your use case.

Disclosure: happy Volt owner that my wife drives 95% around town with the occasional 120-300 mi road trip.
In what use cases is this superior to traditional metal-glass seals (e.g. vacuum tubes), or metal-on-glass deposition (e.g. mirrors)?
Space VLBI is a thing already! Seems to have been around for a while [0][1]. I imagine that the challenge with during EHT-style VLBI in space is downlink bandwidth... there's just no way to get the petabytes of data they talk about down from a satellite. It's already so much data that it's easier to fly hard drives around the world than to send it over the internet, so the transfer would probably take ages over a microwave link. Maybe with laser communication in the near future but even then... it's a lot of data.

Resolution-wise, the angular resolution is inversely proportional to the farthest baseline, as given by the Rayleigh criterion. [2] To get twice the resolution, you "just" need to double the size of your baseline (and do that in both dimensions, otherwise the angular resolution will be different in x & y). We've maxed out the Earth's baseline, so it seems like orbital radio telescopes are the only way to better resolution. Pretty exciting!

[0] - https://www.jpl.nasa.gov/missions/space-very-long-baseline-i...

[1] - https://asd.gsfc.nasa.gov/blueshift/index.php/2016/07/25/thi...

[2] - https://en.wikipedia.org/wiki/Angular_resolution
I don't know if this was used as justification for these practices, but see Deuteronomy 15:12-13 (https://www.biblegateway.com/passage/?search=Deuteronomy+15&...): "If a member of your community, whether a Hebrew man or a Hebrew woman, is sold to you and works for you six years, in the seventh year you shall set that person free. 13 And when you send a male slave out from you a free person, you shall not send him out empty-handed." Note that you only have to help out slaves upon freeing them if they are Hebrew, i. e. one of your own people.
> Are there any plans for a space based VLBI; not easy when you consider the utterly huge amounts of information they have to transfer, a radio telescope in a L5 would be a start.

There is space-based VLBI at lower radio frequencies, with the "Radio Astron" project[0]. That effort works at frequencies which are roughly a factor of ~10 lower than that of the EHT. I'm not aware of any plans for millimeter Space VLBI, but the higher frequency would require higher data rates.

[0] http://www.asc.rssi.ru/radioastron/
Huh? We have already automated most of the farm work in the past century through big machines?

It is really what have made our current civilization possible.
Ask HN: How successful was your 'Show HN'?
As I prepare my next "Show HN", I'm looking to learn more from side-projects that turned into income generators, full-time businesses, and even those that only made enough for an occasional coffee.
So is a black hole 3 dimensional? Is it a sphere? Or does it only work in certain directions? Does everything "fall" the same direction?

I ask because even in a brief history of time, the diagrams are very "single plane of space-time, pulled infinitely deep by the black hole"
Because they should!

Think a corporate network. If I as a sysadmin set our DHCP options to give out our own resolvers, I expect that every machine on the domain to use ours.

DoH breaks that completely; and hence the network operator should have the final say.

As a sysadmin myself, if browsers are overriding the basic model of top down, and it hurts me, because when something is wrong, I cant just look on my machine, I have to check which browser they use... that is the antithesis of the problem, because when DoH doesn't work but normal DNS does, then I'm flat out of options.

This is why I choose not to use Firefox or any of the DoH mainline providers (Cloudflare,) and I go out of my way to make sure users cant do it.
This is not done because the IRS doesn't have the power to enforce its tax system, and if it reported the information it had to the people, the people could know they can slip away with not paying anything that wasnt properly reported.

First, a transparent system of the IRS would lower revenue.
Second, the deductibles system is very complex for the IRS to pre-calculate it, so they are unable to do it.
We can do better than that - beamforming. Better 802.11ac routers use a phased antenna array to change their radiation pattern, steering the RF energy in the desired direction.

https://www.oreilly.com/library/view/80211ac-a-survival/9781...
This permits bonding a metal handle to a pyrex measuring cup. (It would only be safe up to boiling temperatures under the restrictions of the current process, assuming that the process described scales up to a measuring cup.)

This is a constructed example to demonstrate the type of thing that could be done now that we've figured out a possible way to do it. It's probably not a good example, but it is clearly distinct from the thin-film processes we consider common today.

EDIT: See below’s multi-paragraph writeup of why my “now you can do this” example is not a good example in practice.
The real magic is where you can call blocking functions from goroutines and have it Just Work!
Used this for a couple years since the wireless sginal was weak where my room was, and using a 500 MB/s device was decent. Though a couple times a week it would randomly drop out for several minutes which required unplugging/plugging back in the device. Not sure if it was due to the wiring of the house or what; it seems like it'd be a hard problem to troubleshoot. The Powerline standard has only gotten better though with time. As little as ~7 years ago there were only 50 MB/s devices. They now have gigabit-level ones.
As a former US student, and paying my student loans.. I also cannot easily _pay_ them while living abroad. It requires I pay fees to transfer money to a bank account, and pay directly from this account. I cannot use an overseas account nor a credit card or paypal etc. So on top of the ridiculous amount they want, I have to pay money to even pay money.
Producing the new frame probably costed more human time, it just was a less paid human's.
> We've maxed out the Earth's baseline, so it seems like orbital radio telescopes are the only way to better resolution.

Going to higher frequency gives you higher resolution for a given physical baseline length.
You should look up the legal definition of stalking. Making public observations isn't it.
Ask HN: How do you evaluate technical competency for a promotion?
I'm a developer on team with a four-tier hierarchy. We have Associate, Intermediate, Senior and Lead devs. Is there a good (ideally objective) process that a manager can leverage to determine when a particular developer has the technical proficiency of the next tier and would be a candidate for promotion? For the sake of this question, assume the promotion is purely based on technical competency. Management feels they have a handle on the non-technical evaluations.
I would like to see the same results with, say, 1,000 trials and 10,000 trials as well—how much of the slowdown is a fixed overhead, and how much of it is that the code runs X-times slower?
The papers with the scientific details are here (open access):

https://iopscience.iop.org/journal/2041-8205/page/Focus_on_E...

Article in physics world with comparisons to simulations:

https://physicsworld.com/a/first-images-of-a-black-hole-unve...

"AskScience" AMA on Reddit about the breakthrough:

https://www.reddit.com/r/askscience/comments/bbknik/askscien...
why is it oblong???
tl;dr

Firefox will ignore your DNS settings and use his own (DoH)
What Will Happen to the Students in the College Admissions Scandal?
Berne convention is about copyright which has nothing to do with this topic.
It still sends the signal of "We're capable of operating an amphibious assault ship with jets in these waters" - even if there are perfectly normal reasons to be in the area.

The article states that the fact that jets are embarked is novel, which is quite a significant addition.
An Immutable Operating System (2014)
WebpackOps – New Webpack Visualization // Optimization Tool
And unless the people who were at Google at the time were in the meetings, they are merely speculating.

I was at Netscape and was actually in meetings that marca, and others were not in, and it's funny to hear what they say happened, when they weren't in the room, nor were they consulted. Even the people at the top can be guilty of speculation.
dutch architecture consisted of nothing but gold in the middle ages. post-independence we painted everything brown to fit in with the rest of europe.
Microsoft Visio Professional 2019
Seconded - if you're going to try Powerline networking, buy your equipment from a retailer with a generous returns policy.
I agree with you for the most part. The Q4 results had guidance indicating that Q1 would end with ~10K vehicles in transit at the end. That is exactly the result.

There were two surprises, though. They also guided flat shipments of X and S, when in reality they cut them in half. Also, they appeared to be indicating that Model 3 production would increase slowly over the quarter, but in reality they kept it flat. Both of those were negative surprises to varying degrees.

But, of course, we now know that S and X are likely to be revised soon. It is possible that the drop there was related.
It does look like it pulsates to me!
That's an interesting illusion :)
China Plans to Ban Bitcoin Mining? Probably
Is this link down for anyone else?
(full disclosure: I'm affiliated to Cloudflare, but opinions here are my own of course)

Thanks for posting this. I knew Paul is against DoH, but never understood his specific arguments. He has great comment about DoT (dns over TLS) couple of minutes before the linked youtube (I agree with him on that).

Personally I'm not an "owner" of the networks I'm connecting to. My home router is managed by my ISP, I don't run pi-hole. Network at work is managed by yet-someone-else. I often use my mobile carrier (LTE tethering), and often use WiFi at coffee shops.

For all of these cases I would prefer to not expose my DNS traffic. Heck, I'm 100% sure that my dns traffic today is being re-sold! I have couple of unique domain names that I have open in my browser which have unique and non-guessable DNS names, which are crawled by some bots today. Even though I never shared them in any way with anyone! The only way they could be exposed for crawling is by my DNS provider leaking the DNS traffic to some shady third-party.

Many DNS people are opposed DoH, but I think this train has passed. As a user of the internet I really do want encrypt everything these days.
https://tools.ietf.org/html/rfc8404

If my corporate boss, or my ISP can mine less data about the malware I'm running - so be it. For me this is an acceptable cost of measurably improved privacy.
You are completely correct, it's an admission of defeat, of helplessness.
https://www.nytimes.com/interactive/2019/04/10/science/event...

Scroll down to see the released image.
> Knowing your enemy, testing your own beliefs and biases, and walking into battle fully armed, are all benefits.

Sure, to be clear, I grew up with two older brothers and a younger sister, in three different major cities, in three different provinces in Canada, and the history curriculum has largely lacked much particular detail. My history curricula, and that of my brothers, included little or no international history, ancient history, or national history. The main topics of every history textbook (the only source for each curriculum, in my experience) I've seen in Canada (including my brothers', for years I didn't attend in a given school district) have been an obscure subset of clean indigenous stories, and a handful of stories about early Québec.

I'm not saying these history textbooks are especially bad among government school history textbooks, but that they are bad in a general sense, and fail to give much perspective on the origin of the tapestry of nations in Canada, or the story of our legal and governmental traditions.

A better job could be done with an in-depth reading of a mature historical author's work, the kind of thing you would read if you had a personal interest in understanding the history of something.
From my reading, it looks they're considering this for only non HTTPS downloads initiated from an HTTPS page

Relevant quotes:

> ... we will likely start by treating certain high-risk downloads initiated from secure contexts as active mixed content and block them.

> We're not planning to focus on non-secure downloads initiated from non-secure contexts at the moment, because users at least see the "Not Secure" omnibox badge on those pages.
Yeah i’d expect the notification as an opt-in? Do you want to be part of that experiment ?
People tend to downvote because there is complaining about downvoting. There's also a related section in the site guidelines.
A Kotlin Time DSL
Side note - there's a really neat write-up by someone who realistically rendered a rotating black hole in 1979, partly by computer and partly by hand [0]. He goes through all the important visual effects, like GR ray tracing, disk brightness, and Doppler shift. The final image is pretty cool.

[0] - https://blogs.futura-sciences.com/e-luminet/2015/02/18/black...
Treaty obligations spur the need
https://en.wikipedia.org/wiki/Southeast_Asia_Treaty_Organiza...

edit: plus freedom of nav demos
On a tangent, interesting closing remarks from the commissioner on the importance of courage, dreams and science.
Targeted towards the present anti-science climate.
First images of a black hole unveiled by astronomers in landmark discovery
Yes, the food market is heavily distorted. If giant ag businesses that employ immigrants can't make a profit, it means there's too many farms in operation. Farms will close, food prices will rise, and the market will stabilize.

A huge positive to this, smaller family-run farms that don't hire immigrant labor would actually be able to compete with the larger industrial farms. We might even be able to reduce total miles food travels farm to table because it's simply not profitable to ship produce cross-country when local farmers can produce at a competitive price.
Linked List Data Structure Interview Problems
The responsible minister Morgan Johansson has said that the government will abide by the parliaments decision:

"We have an order that we should anchor decisions in the Riksdag, now that the Riksdag has changed its attitude, the government will of course have to follow it."

https://translate.google.com/translate?client=ubuntu&client=...
Yeah ,withholdings are garbage from an anti-tax pespective.

Great example of that today is that most americans believe the trump tax reform didnt help them (only 17% believe it helped them) but it literally and factually increased the income for 80%. At least one reason for that is that withholding was reduced, but refunds were reduced as well. Availability bias makes people remember refunds, but not their monthly payments.
I can't fathom the situation you described since 5.8GHz has far more unoverlapped channels instead of just 3.
A few things:

* Colloquially, we use the term "professor" to refer to anyone who teaches at a university, but it's probably not her actual job title. For example, at my alma mater, non-tenure-track instructors typically have the title "Senior Lecturer", but everyone calls them professors.

* There is a difference between "tenure" and "tenure-track". It's possible to not have tenure but still be in line to receive it upon a future promotion. If your position isn't tenure-track, though, then you will never get tenure unless you leave your job and find a tenure-track position elsewhere. As there are few tenure-track positions open, this is harder than it looks.

* For actual professors (i.e. tenure-track jobs with "Professor" in the job title), the entry level position doesn't carry tenure, and it comes with a promotion. They start out as an Assistant Professor, get promoted to Associate Professor, and eventually to full Professor. Tenure is typically granted with the promotion to Associate Professor.
Stalking: https://www.cps.gov.uk/legal-guidance/stalking-and-harassmen...

> Whilst there is no strict legal definition of 'stalking', section 2A (3) of the PHA 1997 sets out examples of acts or omissions which, in particular circumstances, are ones associated with stalking. For example, following a person, watching or spying on them or forcing contact with the victim through any means, including social media.

--begin here--

Definition of stalking

Stalking is not legally defined but section 2A (3) of the PHA 1997 lists a number of examples of behaviours associated with stalking. The list is not an exhaustive one but gives an indication of the types of behaviour that may be displayed in a stalking offence. The listed behaviours are:

(a) following a person,
(b) contacting, or attempting to contact, a person by any means,
(c) publishing any statement or other material relating or purporting to relate to a person, or purporting to originate from a person,
(d) monitoring the use by a person of the internet, email or any other form of electronic communication,
(e) loitering in any place (whether public or private),
(f) interfering with any property in the possession of a person,
(g) watching or spying on a person.

--end here--

I mean, that's pretty clear.
A corp network should set up their own DoH resolver anyway. And/or simply install a cert on their workstations and MITM every TLS connection.

Even better corps should only allow TLS that they can successfully MITM.

It's basic security. If the endpoint/host can do whatever due to lack of firewall/enforcement, then it doesn't really matter what the network operator wants.
Recipe for invasive species: lionfish as food and sport
Wireshark 3.x: code analysis under macOS and errors review
Does that comparison work in that context, though? I've seen a lot of traditionally "cheap US fast-food" be expensive overseas in many countries. I imagine because there is almost a tourist aspect to it, unlike when it's here in the US. Is there a Swiss version of what they consider cheap fast-food, and is that place still $20 for a basic meal?
The author (Thorne) was actually a producer for the movie, as well as a being a physics professor.