skysight-inc/HackerNews huggingface dataset:
It really won't.

Satellites are invisible if they're in the Earth's shadow. By the time useful observation can begin, there's an enormous swath of the sky that will have zero visible satellites in it.

Diversify your observation targets. There's more than one interesting thing to science at any given moment. If that means spreading out your observations so you spend two hours a night observing four targets as opposed to four hours a night on two targets, so be it.

At the very worst, this means astronomers will need to do more work during the day shift scheduling and prioritizing. This isn't a new problem. I remember reading a back page article in Astronomer magazine sometime in the late 90s with a page of BASIC code. Someone wanted to optimize a computer controlled telescope to make one observation of 100 or so stars every night. You need to roughly minimize the total Manhatten distance between every two observations, while also eliminating observations below the horizon and penalize observations low in the sky. So the author wrote a program to roughly approximate the traveling salesman problem with the additional constraints. In the 90s. In BASIC. In one page. It might be NP complete to get the perfect solution, but good enough is pretty good.

Add an additional constraints penalising observations where they might be impacted by satellites. Hire an intern working on their degree who's taken an optimization course and have them do it for you.
That's not strictly right. If the pool of potential buyers for these coal stock shares dries up, the price of the shares will be much lower than it otherwise would be. This makes in increasingly less attractive for these companies to raise capital for new mines or mine expansions. It even makes merging less attractive. It also makes recruiting and retaining skilled executives harder. All of this surely impacts these companies in the longer term (say 5-10 years from now)-- they are likely to be a lot smaller and to employ fewer people.
The world has a lot of land, though. Before humans came along, there were roughly 6 trillion trees in the world. Now there are about 3 trillion, mainly due to forests being cut down for agriculture, wood, etc. Getting back the other 3 trillion trees would sequester an additional 75 gigatons of CO2 per year using your figure of 25kg/tree/year. Human activity emits 45gt/year according to his article.
A fly-by doesn't count. Even the Voyager probes will someday fly-by some star. Going to a star and setting up shop (whether a human colony or self-replicating probes) is the only thing that counts in my book.
Mame/Green-Square-Quine
There are so many wonderful lines to be found...

"It is not our part to master all the tides of the world, but to do what is in us for the succour of those years wherein we are set, uprooting the evil in the fields that we know, so that those who live after may have clean earth to till. What weather they shall have is not ours to rule."
I have a really hard empathizing here, VCs in many ways represent the robber barons of the 21st century.

In WeWork, the world saw a blatant attempt by VCs to dump a severely overvalued and overhyped company into the public markets so they could cash out.

In Facebook, we saw VCs fund one of the world’s largest and most successful surveillance capitalist enterprises, one that still seems to be going strong, despite the ridiculous number of scandals plaguing Zuckerberg. VCs made him invincible.

We’re seeing gig economy companies find new and creatively unsavory ways to screw over their “not workers” (looking at you, GrubHub).

But yeah, screwing over the middle class has to be draining work.
I'd be curious which features you think C# messed up on. I have been using C# professionally since 2000 in it's first beta and can't think of a newer feature that would meet this criteria?

That said you are correct about records. Although it is getting them also.
He definitely suffered some personal tragedies - there were allegations of sexual abuse at the hands of some passing Oxford acquaintances of his father IIRC
Federated Learning: A Gentle Introduction to a Privacy Preserving System in AI
That's too bad. Out of the other $1T US companies (Apple, Amazon, Microsoft) Google seems by far the most user hostile. I would say Microsoft once held this position but lost their edge to be truly damaging. On the other hand Google:

* Sells ads for a living

* Pushes AMP

* Removes features from Chrome that allow you to block ads

* Android littered with spyware

* Kills products randomly

* Kills platforms randomly (leaving developers high and dry)

* Horrible hiring culture cargo-culted by lesser Googles

* Privacy concerns with Google Home product

* Introduces politics into the workplace

* Introduces politics into their products

* Sexual harassing execs get big payouts

* Infantalized workplace culture

* Produces increasingly awful search results

* More...
In Haskell you usually use `otherwise` for the last guard clause, like so:

f x | x < 0 = ...
| otherwise = ...

It took me a while to realize that `otherwise` isn't a keyword or bit of syntax. It's just a variable bound to True: https://hackage.haskell.org/package/base-4.12.0.0/docs/src/G...
Now that the BA and Seattle are gone, where's everyone going?
Install an Android app or use Linux in ChromeOS.
What VM support? Records are a Java compiler feature. It just auto-generates all the boilerplate at compile time, there doesn't seem to be any bytecode or VM support for this feature?

It seems functionally identical at the VM/bytecode level to what Kotlin's data classes already do.
> What Washington should be doing is investing in creating a US-based top-notch semiconductor foundry business. And that's something that takes 20+ years.

That would require leadership and vision. Unfortunately, too many American politicians would prefer to use any money available for that to instead cut taxes yet again.
A great article posted in May 2019 by Saul Griffith from Otherlab/Makani/Instructables on decarbonisation[1] and another posted yesterday suggesting the idea of a "climate loan"[2]:

"The future can’t be built on lay-away; we need a loan. America’s strength for much of the 20th century was inventing new financing models and exporting those banking skills to the world. We need to put that to work once again, this time for climate change. The key insight here is to extend infrastructure financing closer to the home where the infrastructure of the 21st century will sit."

[1] https://medium.com/otherlab-news/how-do-we-decarbonize-7fc2f...
[2] https://medium.com/otherlab-news/solving-climate-change-with...
They can be optional, like in Kotlin -- you can give name to only some (after unnamed ones).
It's nothing really new and the same dynamics can be observed throughout history. Imagine there was a time one could look over and see the bay without the Golden Gate bridge or high rise buildings. And now, its even an iconic thing!

A generation or two in the future astronomy will probably get redefined quite a bit via remote telescopes and adventure vacations to space and so forth.

Even now there are plenty of enthusiasts who are excited to take pictures of rockets during take off or explore satellites as they pass by. So it actually get more people interested in space and astronomy.

And there will always be people on either side supporting or opposing technological advances - as we have seen thought history. The one thing that is certain in my opinion though is that things will change.
One should version whole protocols instead of adding option negotiation for things like cipher suite.

So say:
TLS 1.4 = “NIST version” only supports ECDHE(P-256)+AES-256-GCM+SHA256
TLS 1.5 = “Bernstein Version” only supports ECDHE(X25519)+ChaCha20-Poly1305+Blake2b

Because of the X.509 legacy both these future TLS might have to support RSA-2048 and P-256 ECC certs, but supporting just one would be better.

In either case fewer options and branches is simpler and more secure. Both can be enabled, one turned off if a weakness is found.
It totally is.

I worked in EdTech for the past 4 years and was in contact with the education world.

Digital devices are harmful to younger kids. The brain develops much better when using fine motor skills such as writing with pen and paper. France banned all digital devices in primary schools for a reason and all countries should do it.

The most important factor in getting quality education are not digital devices or educational material but the quality of the teacher. The OECD did a study about the use of computers by students at the school and at home[0]. See the results for yourself. Countries like China, Singapoore, Finland, and Estonia barely use computers but have some of the best PISA academic results.

[0]: http://www.oecd.org/education/students-computers-and-learnin...
It appears I was a week behind their specific policy on deep fakes, but like that article mention it doesn't cover video doctored in other ways that are still objectively false.
Show HN: Darken – Darkmode Made Easy
Elf strange?
Σάλκε – Γκλάντμπαχ, επανέναρξη με ματσάρα
I loved most of the changes in Fellowship; but that was always the least cohesive and most tangled of the stories, not quite sure what it wanted to be.

I particularly loved the small touches; Boromir teaching the hobbits to use their swords, for example, helped make him a much more sympathetic and tragic figure than Tolkien did.

From Two Towers on the changes became considerably less good though; throwing out much of the plot incolving Saruman in favour of an invented-out-of-whole-cloth side quest for Aragorn was a terrible decision and, as you say, the changes to Faramir were appalling.

One positive, though, was emphasising the point that Frodo failed and the ring was destroyed by chance? That was good, because it was a key moral point Tolkien wished to make.
I strongly disagree. I’d expect the shadiest of shady websites to have the best security, but as demonstrated, the people that scooped up tonnes of my financial history without my permission, then charge me for access, and sell that data to other financial institutions that use that data to determine my access to credit, not only have terrible security, but aren’t really punished for it either.
You are a business type?
This looks like syntactic sugar for comcepts that already exist?

I think in Java’s case, its only mow getting struct-like semantics

edit I may be wrong. It could be a purely syntax level feature in Java as well.
Would happily pay £2-3 for this to index all the memes, did not expect it to be free.
I am fortunate. My snailmailbox is right next to the recycling bin, so it takes all of 15 seconds to sort through my mail and toss the junk into the bin.

I still wish I could automate that like I can for email, though!
Did you really mean to reference the sort of negative feedback used productively in engineering to maintain balance in control systems, op amps, etc?

That concept is quite different from negative feedback related to expressions of disapproval.
Please don't post in the flamewar style to Hacker News—not even about VCs. We're looking for curious conversation here.

https://news.ycombinator.com/newsguidelines.html
Leadership by example is one of the strongest ways to lead.
They still supported cmd+click for right click didn't they? As opposed to this site...
I think this is a great sign that the industry titans are recognizing the market incentives to migrate away from fossil fuels.
Data shows the opposite. Mature trees are more efficient at sequestration.
Explain why mutation doesn't play well with pattern matching.
Scouring was key for one of the things that concerned Tolkien the most: that even after the most virtuous war, there are losses and hurts that can't be mended.
I always enjoyed this sendup of Bakshi’s film

http://flyingmoose.org/tolksarc/bakshi/bakshi.htm
You're forgetting that you could rent games from Blockbuster before you bought them back then and some consoles had demo disks. You can't rent mobile games to try them before you buy them.

Freemium is the modern/mobile game demo.

If you have kids, try Apple Arcade.
From what i read they are going with "partially painted black" Makes sense to only have the underside facing earth black. Also the satellites underside is only exposed to the sun with an steep angle because most of the time when it would be exposed to sunlight it's going to be in earths shadow. Reducing the extra heating even more..

Could work without extra cooling...
If you follow the financial industry, you would have heard of Blackrock sooner or later.
Ask HN: Functional Reactive Dev tools: what is available?
I'm new to FRP, but what comes up many times even from notorious names and authors is the lack of tooling: eg. specific debugger tailored for FRP to omit jumping back and forth between the FRP framework code and the business logic.

Also, visualisation tools, specific refactor tools might have already been created in the MANY different FRP communities the others are not aware of.

What modern FRP devtools are you aware of? Any dedicated IDEs, plugins, etc. are welcome.
C# does not have records but they have been "proposed" and subsequently delayed for some time now.
That was the Army's fault. They changed the powder from the one specified by Colt and the Air Force. They didn't require the troops to clean their weapons (wtf?), and the Ordnance Corps desperately wanted the M-16 to be a lighter M-14.

https://www.theatlantic.com/magazine/archive/1981/06/m-16-a-...
There's a real possibility that some of those therapies might work in the next 6.5 years, as per Greg Bailey @ Juvenescence.

https://www.forbes.com/sites/robinseatonjefferson/2019/08/26...
We went to see ROTK 12 hours before my wife was heading to the hospital to give birth. Her poor bladder almost didn't survive the numerous "is it over now?" endings.
As a society we have decided that there are objective good and objective bad. While in your view all may be an amusing intellectual experiment, society at large considers stalking, and other crimes that could arise here, to be objectively bad whether or not the perp derives some pleasure from it.
Certainly if tension with China builds toward some conflict and China were to begin an invasion of Taiwan, and the US came to their aid in some manner (limited to maintain face or otherwise (the US will not go to direct war with China at scale under any scenario short of survival-necessity)), the first thing the US should/will consider doing is accidentally bombing Taiwan's advanced manufacturing and technology structures (including any TSMC fabs). Then blame as much of the destruction as possible on China. Any invasion of Taiwan by China is a guaranteed loss of Taiwan permanently to the CPC and almost everyone in Washington DC knows that. So if you're going to suffer a guaranteed loss, they'll take a serious look at 'reasonable' scorched earth; make it more painful (China and the USSR several times used that in the direction of US global ambitions post WW2; the US would do the same thing the other way and has eg in Afghanistan-USSR and elsewhere, so I have no doubt they'd consider it for a Taiwan scenario).

It's not a nice thing to say or ponder, it's exactly how the Pentagon will think about this matter however.
FWIW, I don't think he's creating a monocrop forest -- he's planting a range of species that form an interdependent web.

This is also being done in locations that were forests a few hundred years ago before humans cut them down. The mature forest is a self-sustaining ecosystem, but it needs extra water for a few decades until it reaches that point. https://www.westhawaiitoday.com/2020/01/12/hawaii-news/yisha...
Another research about large scale structures:
http://irfu.cea.fr/dipolerepeller
business travel is different from commute. they chose to save money by building away from where people live. most of their employees drive, redmond campus has more than 15,000 parking spots.

vendors and contractors are not allowed to use shuttles and connectors, that probably adds another 5,000 cars

i want to believe they want to right their wrongs, but their initial decision to be far away from any population area has contributed a lot of co2 over the last 30 years.
Nope, China’s coal consumption peaked in 2013.
I did not say it was useful or useless, just that I do not believe in it (in fact, I don’t disbelieve it either), my comment was more pointing to the assumptions of cultural ontology in the parent comment.
IEEE 754 is designed for scientific computation and simulation. And it's very good for that. However it's terrible for representing decimal numbers and fractions. You end up with the exact problems described in the article.

It's kind of a problem since most programmers aren't writing programs to do scientific/modeling. They're writing programs that are doing decimal math and currency where IEEE 754 is inappropriate.
C# has had records slated for years without delivery, alas. Thankfully we do finally have a version in testing.

In any case to answer GP, structs should not be considered a valid substitute for records, they are 'value types' so passing them around means you copy all the data every time you pass (i.e. lots of allocations if the record is larger than 1 or 2 fields)

Properties get you 'closer'. You can do some code
Which is a good bit less than Java by default (i.e. not Lombok or similar)

F# does have Records, and technically there's nothing stopping you from declaring your records in F# and importing them into C#... but that may not be ideal. I don't think you get the full benefits (like copying a record with specific properties changed)
Sounds bad. What would be better?

(Such censorship has always existed behind the scenes. Maybe better if it's on the record?)
Wikipedia: The strange case of the wandering semicolon
> Maneuvering as close to a 90-degree track as possible, the submarine fired three torpedoes against the rock cliffs. The first two exploded, but the third threw up the familiar geyser of compressed air and water. Divers carefully retrieved the activated yet unexploded torpedo. The valuable dud was then hauled back to Pearl Harbor for examination.

Damn, for me any person who deals with any kind of unexploded ordnance is (as well) a hero.
It's not about handwriting per se but about using fine motor skills. For a healthy development of the brain, young kids need to develop motor skills which neurologically will allow cognitive skills to develop properly later on.

Sorry I don't have any link to back this claim but I worked for a couple of years in EdTech with pedagogy experts.
How did this reach this high on HN? Also source?
So servers are not affected?
I've tried to build it on Mac in the past (years ago). I spent hours fiddling with it, and finally gave up and ran brew install guile. It might be better now?
You do realize starvation is already happening because of changing weather pattern?
This is awesome, I’ve been meaning to try building something like this myself after watching the WWDC talks of all the built-in ML features of iOS.

I wonder how difficult it would be to hook up the index of text to the spotlight search API so it can search via the built-in iOS search?
What if our sense of scale is off and the universe isn't curved we're just orbiting a black hole 10x the mass of the visible universe. It's not expanding that's us travelling through the gravity well at 99% the speed of light relative to it.
I take your point, but... In fact the number of smokers has been increasing globally. It's going down in the West, but up elsewhere, and global population is increasing, overwhelming the reduction in smoking prevalence.
There's a lot to like about this, but I laughed at trying to cast nominal typing as a design choice in typing per se rather than e.g. a tool to make the VM's loader simpler. It gives away the lie just two paragraphs after explaining it:

> This choice was partially driven by a key design idea in Java’s type system known as nominal typing, which is the idea that... each type has a name that should be meaningful to humans... the compiler still produced two different anonymous classes, $0 and $1...

Names extremely meaningful to humans!
A pattern requires matching against a piece of data possibly composed of several related components that are assumed to be coherent with one another, not some mutable object. How would you match Point(3, y) against a mutable object, if by the time you grab the y, the x component may no longer be 3 (recall that Java is a multithreaded language, and x could be volatile)? By analogy, think of how matching a regex pattern would work against a mutable array of characters as opposed to an immutable string.
Is there no chance these are coincidences? It gives me "Bible Code" vibes: https://en.wikipedia.org/wiki/Bible_code#Criticism

"information theory does not prohibit "noise" from appearing to be sometimes meaningful"
The New Feudalism
Are servers only affected if they use the browser or is IIS affected too?
The Anarchist's Cookbook was not trafficking in stolen goods. The stolen data may not have been hosted on this site directly, but it was certainly knowingly trafficking the data.
The Trail of Bits CA is unlikely to be in your trust store, so you will always get an error message. For example Chromium on this Linux lappy gives me a certificate error relating to the CA but I can still access the site. After importing the CA to my trust store I can no longer access the site at all because I get a proper fatal error relating to the certificate itself and not the CA.

I have problems getting Windows update to work under Arch Linux but I'm hoping to find something in the AUR.
The big one I remember was to remove diesel engines from the machine and make it electric. This removes the problem of fumes. Did they do that?
What you describe is the effect of war, not its origin. Ironmongers get rich from war, but they probably don't make the conflict happen. How could Northrup Grumman force the invasion of Kuwait to improve F117 sales?
> "But time was taken from something else"

I think this is a key point. Insofar as computers or ipads can free up more time for other studies, they're a positive development, but insofar as they take away time from other studies, it seems like a negative.

I learned recently that the school district I attended as a child is phasing out their home economics program. They always had two teachers for that, one would teach the cooking half and the other the sewing, switching every quarter. Well, one retired a few years ago and the school district seems to have no interest in hiring a replacement, so the remaining teacher dropped the sewing section completely and now only teaches cooking to kids. But she's going to retire in a few years too and has told me the school district has no interest in hiring a replacement for her. Those classes weren't worth much to me since I learned to cook at home (incidentally that school teacher is my mother..) but a lot of kids have never done anything more sophisticated in their kitchens than use the microwave, if that. A lot of kids have parents that don't have the time or inclination to teach them how to cook, maybe they don't even know themselves. This trend concerns me a lot more than the ability to spell. Being able to cook for yourself is cheaper and potentially healthier than buying microwave TV dinners the rest of your life. And for that matter, the only serious nutrition education that school district provides is in that course. Unless they're going to replace that class with a nutrition class, they'll certainly be doing those kids a disservice.

See also: "Figure 5. Trends in obesity prevalence among adults aged 20 and over (age adjusted) and youth aged 2–19 years: United States, 1999–2000 through 2015–2016" - https://www.cdc.gov/nchs/data/databriefs/db288.pdf