skysight-inc/HackerNews huggingface dataset:
> Every single piece of reporting I've seen on the matter refers to MCAS as an anti-stall device.

"Anti-stall" has become a catchphrase wrt the 737 MAX. I wish everyone would stop using it, but the horse has left the barn it seems.

MCAS was cooked up to maintain the handling characteristics required by the FAA certification specifications.

Other commenters in other threads have explained why consistent response curves are vital in operating an aircraft, so I won't take on the why of the regulation other than to say it's well founded and some smart systems/human factors engineers have elucidated on this in earlier threads. Otherwise, wouldn't it have been easiest of all for Boeing to beg "let us have the airplane respond this way; all planes are different, right?" And even if the FAA allowed that, it'd force a new type rating, I suspect; the very thing they so badly wanted to avoid.

The standard (see below) requires stick resistance to increase as the critical (stall) angle of attack is approached. The MAX violated that requirement due to the aerodynamics of the new engine cowls. (So: why didn't they mess with the cowls? I suspect that wasn't possible without impacting efficiency, which is a key selling point of the MAX.)

Back to the spec: as noted, it exists to provide a consistent response curve to the pilot compliant with the regulation.

As borne out by these accidents, MCAS is Boeing's (quick & dirty) implementation of "artificial feel" to meet the spec. Big, transport planes with hydraulic flight controls have had artificial feel for many years to provide a consistent and properly scaled input response (not too heavy, not too light, etc.)

As far as the FAA specification in question, the critical section is in CFR 14 §25 Subpart B—Flight ¹, notably the sections on Controllability & Maneuverability and Stability. In these sections 'stick force' appears sixteen times; 'stick force curve' appears six times.

It's "stick force curve" that MCAS was created to tweak. There's no mention of "reduce the critical angle" or "change the stall onset speed" or anything about the aircraft performance. It's about how the plane handles in a particular part of the flight envelope².

> Every single piece of reporting I've seen on the matter refers to MCAS as an anti-stall device.

Because it was printed repeatedly doesn't make it true (see, Gell-Mann amnesia effect³).

+++

¹–https://www.ecfr.gov/cgi-bin/text-idx?node=14:1.0.1.3.11#sp1...

²–I'm surprised that MCAS reacts fast enough to count as artifical feel. Electric trim doesn't move all that fast, AFAIK. Still an open question in my mind.

³–https://en.wikipedia.org/wiki/Gell-Mann_amnesia_effect?wprov...

NB: this comment is edited/recompiled from snips of earlier comments I posted.

(me: FAA licensed aircraft dispatcher in a previous life)
> if you disagree, riddle me something entirely different
I agree its very far away, except for interstate driving. I can see an SDC-only lane, with a faster top speed. Residential, taxi-cab driving is so far away. Hey, if I step in front of this car, I don't get to sue a fairly poor driver, I get to sue a mega-corp for a tonne of money cause the algorithm should have stopped.
This mirrors my experience over the past few years in Portland. I don't mind bikes, but as a pedestrian having cyclists fly through red lights almost running into me on numerous occasions, I lost a lot of my empathy for them.

One of the other more difficult things to come to terms with (both as a pedestrian and a driver in that city) is that bikes can transition from sidewalk to street basically whenever they want, and however they want. Most cyclists were very careful about this, but there were plenty of occasions where I watched a bike cut across traffic at full speed, hop up onto the sidewalk and expect the pedestrians to just move out of the way for them.

Obviously its still up to drivers to drive safely, and we have a LONG way to go in that category, but cyclists need to do their part as well.
I’m not convinced publishing is equivalent to stealing.

Honestly I think the only people who don’t like this guy are corrupt politicians, or people who wish to give shelter to or benefit from corrupt politicians.
Buy vs build? Go ahead. Buy. Spend 40 million a year.

https://www.nytimes.com/2019/04/10/nyregion/nyc-gps-wireless...
Yep, definitely. In this specific case of a missing unsafe marker you don’t need symbol versioning at all; you need the stdlib to somehow present two signatures for the same function that the compiler can select between according to the Rust version. It’s only for more complicated cases of API breakage (your function took an i32 but you need to extend it to an i64) that symbol versioning becomes necessary.

And great! All I wanted to point out was that, should the need arise, it is technically possible to tie stdlib function signatures to a particular edition.
Interesting take, thanks.
The important HN link here is the GNU reference in one of the examples.
He isn't. The spacecraft was.
I did it. With a fresh account. Fresh page. They could just as well have done it.
>I would be curious to know if they tried to raise prices in any markets and what the results were

You know they did, and if the results were good they would have done it across the board.
Huge barriers to entry to compete with Amazon (warehouses, tech). Thus no serious direct competitor. Few barriers to entry in ride business (just another app)
thanks. I should add this information
I honestly feel like you comment is a perfect illustration of this point made in the OP, which was as much about citizens as it was about what politicians would like them to think:

"just fathom the authoritarian mindset that would lead a citizen -- and especially a "journalist" -- to react with anger that these things have been revealed; to insist that these facts should have been kept concealed and it'd be better if we didn't know"

By the way, the indictment for the extradition request has nothing to do with the 2016 election, but rather the Iraq war logs from back in 2010. I understand you may not like Assange very much and think he is a bad person, but I would encourage you to consider the bigger picture and that many people are raising the alarm that this is an extremely dangerous attack on the first amendment and the freedom of the press.
> Also, is the 1st amendment protection even applicable to foreigners on foreign soil?

If the US can prosecute foreigners doing foreign things on foreign soil, it should also strip them of all their rights. Is that your reasoning?
It would be good for people who bought in (higher margin), good for people selling in 6 months (employees), and bad for the company (money on the table).
I tell you what, I'm moderate, some might say a bit coward, tonight I will sleep as usual, tomorrow I won't protest, never been in a single protest in my life. But I nonetheless think there is something wrong in our current western democracies. Instead of prosecuting people committing murders in a video, these are the men and women revealing these facts that are hunted down, for years. Meanwhile, these same people don't understand when citizens in desperate attempts to shake the system vote to the fringes failing or not wanting to acknowledge the current situation. It's not going to end well, that much I know.
SpaceX Does It Again: Falcon Heavy Executes Its First Commercial Launch
Dynamic Routing with AWS Lambda Edge
The network effects are the moat, and it would take a lot of money to disrupt that.

Any given market can't sustain more than a 2 or 3 rideshare services because splitting the network makes it too sparse for drivers and riders to match within a few seconds or minutes.

Uber has the #1 or #2 spot in virtually every market. That's an economic moat if I ever saw one.

https://www.investopedia.com/terms/e/economicmoat.asp
Because there ARE secrets that governments need to keep.
Sort of - he got it published easily enough and the revered Max Planck praised it highly within a year and lectured on it but he certainly faced resistance. He had some allies who were themselves great mathematicians and physicists but he didn't exactly get the red carpet rolled out for him. It took four years after publication to get an associate professor position sufficient to resign from the patent office.
The Podesta leaks and the DNC emails came from Russia, and he must have known their intent. Either he's an active tool, or a passive and complicit one, but I think my point stands.
Which makes me wonder why the employee in question, Cees de Groot, was so adamantly refusing to answer the question in any sort of detail.
It's actually not that high. In the anecdote, the little page I created had two sources with citation formatting messed up and two paragraphs of text. A week later, bots had cleaned up the citation, another bot had added an infobox, and someone had added all the "Retrieved at" dates to the citations. I did so little.
Yeah, the major complication with the STS RTLS option is that the Shuttle had to keep the external fuel tank until after the return burn was completed (since the shuttle itself carried no propellant for the main engines).

Scott Manley did a video a few years back explaining how this return profile works (and attempting to fly it in Orbiter)

https://www.youtube.com/watch?v=Iwn3kk-q1YU
What moat? All the user has to do is change the search engine to Bing from Google.
I just wonder if the encyclopedia survived. It seems possible.
Why can't a Wi-Fi encryption standard be developed in the open and added to IEEE 802.11 as another annex? Or at least what's to keep people like us from making our own standard in the open and implement it in our own systems at least?
I can tell you why this will never be a thing:

the infrastructure cost is way too high. Not just the cost of materials and labor, either. I'm talking social, political, and environmental costs. people would fight this left and right.

Power lines are already considered an eye sore in many places and are required to be underground. good luck convincing people that a power line with a bunch of moving boxes on it is going to be any better. its essentially a gondola for packages and no one wants that in their backyard.
I sat in a meeting where this was explained to me. This was before Google existed.
You cannot trade options during your lockup.
He also said that his internet access had been cut off “by a state actor” when the Ecuadorians kicked him off their WiFi. I wouldn’t trust what he says.
> This, to me, signals the general attitude people have towards bicyclists in the US.

Maybe, but if you have ever tried to get around in Cambridge, MA, you would understand that it is a disaster for everybody.

Pedestrians walk into intersections when they shouldn't and block traffic, sometimes indefinitely. Bicyclists ignore signs, lights, people, etc. and cut off cars randomly. And cars have to shove their way through the mess or they will never get anywhere.

Cambridge traffic is simply dreadful. Go read Neal Stephenson's "Zodiac" for a taste.
Except myself and apparently many others in this thread switch easily between Uber and Lyft, etc, and anecdotally the drivers do too.
How dare they. Condescending tone is not allowed when talking about anything that comes from the Chosen state.
Elliot Rodger posted on the Misc subforum. In retrospect, reading his posts is like a morbid dark comedy - the lack of social awareness, the insecurity, all shone through to the point of feeling insincere. It could very well have been a troll, there was no way to know. It's no wonder he barely aroused alarm despite posting his ideologies on many a public forum including Youtube. He indirectly mentions posting on Misc in his manifesto, and how he ultimately failed to reach his fitness goals and the subsequent insecurities. I can't help but wonder if people like him would be or have been better off without ever coming across communities like BB forums. There's little to glorify, it's not a part of internet "culture" to look fondly back on.
in silicon valley S-1s.
Also known as an 'Obiwan error'.¹

1: http://www.catb.org/~esr/jargon/html/O/obi-wan-error.html
I wasn't writing Scala day-to-day myself, but common (though by no means universal) objections were around complexity and difficulty of iterating quickly. The author of the Elixir post below also wrote a bit about his experiences with Scala - http://evrl.com/programming/scala/2017/04/04/scala-part-ii.h....
First I've heard of this. I used Atom for a few years on windows and ubuntu without any issues except opening very large files.
Chocolate is toxic to dogs, but that doesn't mean it's dangerous to us. Again, you can't just rely on your gut feeling for this kind of stuff.
(Edit: another thought, maybe your curl testing took longer with all the extra CSS in the download and writing to disk if that's what you did - an AMP requirement. But did your curling pull down the external CSS/JS for non-AMP?)

According to the webpagetest.org results you linked, which ran the test 9 times on each page, the mean time to first byte for the AMP page is 1005, and for non-AMP it's 989.

Which is just 16 ms.

But the time to visually complete for example on non-AMP is 1955, and on AMP it's 2166.

Which is a difference of 211 ms (which percentage wise is almost 10x bigger (I think, I'm not super mathy)

This implies to me that the problem is AMP not the server.

But if your data is correct then perhaps something is up.

The thing is, I know how the site is coded. The AMP version just excludes things almost exclusively. Although it does have to render the CSS in place (the fragment is cached) rather than just link to a stylesheet.

But here's the thing, even if that is the problem, the only reason it's like that is because that's what AMP requires.

Maybe there's changes we could make on the server, but according to this webpagetest site, the problem doesn't appear to be the server nearly as much as the rest of the render process.
I wish I had prepared for them before going to SUSECON, the exams are free as part of your SUSECON ticket. :)

Maybe next year...
From the paper:

"We identified two chemicals—Y27632 and apocynin—that induced COL17A1 expression in keratinocytes. To test whether these compounds increased the self-renewing capabilities of epidermal stem cells in vitro, we performed colony-formation assays40,41; Y-27632 increased colony number, and both drugs increased colony size (Extended Data Fig. 9m–p). Application of these drugs to full-thickness skin wounds significantly promoted wound repair, similarly to the effect of overexpression of human COL17A1 in mice (Extended Data Fig. 9q–s). Collectively, these data show that COL17A1-inducing drugs promote skin wound healing through re-epithelization of the wound edge with epidermal stem cell expansion, and point towards directions for facilitating skin regeneration and reducing skin ageing."

It seems like one very promising application could be in promoting wound healing in certain populations e.g. venous stasis ulcers, pressure ulcers, and many other chronic wounds that don't heal well especially in the elderly (if the treatment were safe). That would be fantastic.

But the use of the term anti-aging effects in this paper is suspect. COL17A is part of the basement membrane holding together the thin epidermis and thicker underlying dermis, whereas much aging related research that focuses on 'collagen' loss relates to the amount of collagen I in the thicker underlying dermis. Loss of dermal collagen I with aging is associated with cosmetic changes like thin skin (dermal thinning) and wrinkling.

It would be surprising if increased expression of COL17A1 at the basement membrane dramatically induced cosmetic anti-aging effects in the sense of increased level of collagen I in the dermis. Also, it may be a band-aid for one particular cellular function that is important for local tissue structure and cell functions, but the underlying causes of general aging change in cells (mutation accumulation, UV damage, oxidative damage, etc) probably are not being addressed or reversed.
Nailed that too. What a day!
The other way around. Fake news and the older term have the the same origins. Neither are accidental. Both are designed to short-circuit critical thinking.

Consider how logically meaningless the term "conspiracy theory" is. A great deal of US law is specifically written to address conspiracies.

They are forms of psychological warfare.

https://news.ycombinator.com/item?id=15003606
A lot of Scala users like the Akka actor system. The actor model is a first-class library in Elixir (or more specifically Erlang/OTP)
Indictments contain allegations, not facts. This is Civics 101. An informed commentator could not honestly post multiple attempts to blur this distinction. What does that say about you?
Convenient way to do event scheduling - some friends I know are not on FB so it’s a pain currently.

Also having up to date contacts to stay in touch. Phone numbers and addresses change and it’s hard to know when that happens (and currently most people don’t put this on FB).
I really like the re-imagination of the type system, data model, and the user interface. This is an area where databases could be significantly better than they currently are.

My only concern is that there is nothing about the backend that suggests that this will be scalable beyond tiny data sets. Even on single machines, there is a performance cliff that arrives very quickly when doing these kinds of data model traversals unless you are using something exotic under the hood.
it may be what they are prosecuting him but they sending a very direct message to all the press at the same time. as in, like we have read with many other cases, the government can make any charge they want to get you. you might walk that fine line perfect but it doesn't matter when the people who hold the law in the backpocket can create new lines and stretch them as needed.

what people like assange, snowden, and manning, did, along with organizations like wikileaks, is take the muffled humor everyone joked about knowing their governments were up to no good and put it out in the open. sadly we need people and organizations like this because no matter how much we claim to be free we truly never are.

are there better ways to do what has been done? probably, but it is no less likely that better ways will simply be portrayed as needed to get the same legal outcome.

seeing that they are so narrow in their prosecution they are probably hoping to make it swift but I suspect as the weeks roll by there will be many more people standing behind assange. not necessarily for him but what his actions represented and accomplished.
I wouldn't call it naive to believe it will work eventually, if the time scale for eventually is unspecified; after all, we are an existence proof that it's at least possible. Pinning down that timescale is the tricky part though.

Also, your username is hilariously apt.
"Sorry to hijack, but Josh dude how are you arguing with a calender?"

"He is in Josh world. The g'damn dumbest world in the universe!"

Classic. Reminds me of arguing Xbox vs Playstation as a teen on neogaf.com.
If you did this to your car, what would you do to this system now that you have gained access? Install Android? I'm trying to think of a practical reason to actually do this to my WRX as Starlink is not an enjoyable platform.
I doubt it - linked in is a mess. They also have too much tied up with recruiters being their real users.

I’d want something simple.
The fact that voter ID laws are often made to disenfranchise certain groups isn't racist, it’s just a fact. You’re talking about whether the targets think it succeeds in doing so, which is a different question, and a pretty irrelevant one. What matters is the intent, and whether it succeeds in that intent.

Common sense tells me that a political video consisting of eleven interviews with people picked off the street in Harlem is very unlikely to be representative of the nation except by accident. I haven’t watched the video and I don’t plan to. I’ve never seen a video link in an online argument that was worth watching and I see no indication that this one is any different.
>This result is disappointing for us, but it is not a notable change in the law

Bullshit. This is a big precedent where Wikimedia will now remove material from Wikipedia if a court orders them to. They even acknowledge that the material in this case was, if not unambiguously true, at least well sourced.

That's a huge precedent. It only remains to be seen whether Wikimedia decide to fight a similar decision made by some other court, perhaps in a less popular jurisdiction like China or North Korea.

Perhaps they mean that this is not a notable change in the law because Germany is not a common law jurisdiction, and changes to the law happen only through the legislature and not through the judicial system. But in that case the claim is trivial, and still equally irrelevant now that Wikimedia have set the precedent that they will obey courts in these cases.
It seems jews aren't allowed on the Moon.
A wise decision by TPTB.
Show HN: Collaborative flashlight mod for desktop games
FH is reliably going up and coming down, which is incredible: my attention is barely here since they are building multiple Starship Hopper test articles in the open fields of south Texas. [1, 2]

The increasingly most likely scenario with SpaceX and BO is that we'll have self-sufficient Mars colonies and space colonies in the next few decades. The funding is economics-based this time around rather than taxes and government projects, making it less volatile and less likely to be cancelled. Pumped!

[1] Tethered first test: https://twitter.com/elonmusk/status/1114390314565787648?s=19

[2] https://forum.nasaspaceflight.com/index.php?topic=47730.msg1...
>and who thus should be afforded the same First Amendment protections given to news organizations

The news media likes to pretend that there is a special status for news organizations and journalists. This is a common misconception that we need to fight against. The First Amendment is not just for news organization, it is for every US person. Back when the First Amendment was proposed and ratified, anyone could obtain a printing press. The First Amendment makes no distinction for a news organization or other publisher vs an ordinary citizen.

An example of new organizations trying to give themselves special status is Chris Cuomo assertion that if you were not a media organization it would be a crime for you to possess the Wikileaks emails.

https://www.washingtonpost.com/news/volokh-conspiracy/wp/201...
Eh, three orders of magnitude, close enough for deep-state work...
"Stories" is a good descriptor for unsubstantiated claims made by the Ecuadorian government, which were denied by the former president.
It's a really good tutorial.

I like how you talk about Conditional Inference. My thesis is suppose to overcome the brute force of exhaustive search for best splits that Random Forest does (I use Dr. Loh's GUIDE trees) using statistical methods.

> Many implementations of random forest default to 1/3 of your predictor variables.

This is interesting. I hear it was sqroot(total number of predictors).

> Ensemble methods combine many individual trees to create one better, more stable model.

I think stable can be more clarify to having good training accuracy and low generalize error (unseen data error rate) compare to individual tree. This is what Dr. Ho talk about with forest.

But other than that I think it's an awesome tutorial.

I've seen what other tree and forest do for better generalization with unseen data is pruning is using CV and choosing 0.5 to 1.0 std error as a cut off point. That may be a thing to talk about if you are interested in that.
At least with iOS, you can cancel the trial immediately after signup, and your account is still active until trial period ends.