skysight-inc/HackerNews huggingface dataset:
That link appears to be about unknotting any embedding of the circle into R^4 . Indeed, these can all be unknotted.

I am saying that if instead of having a 1-d curve (a circle) embedded in 3-space, you instead have a 2-d surface embedded in 4-space, that such surfaces can be knotted in 4-space just as the circle can be knotted in 3-space.

Iirc, one way to construct these surfaces is to start with a knot in a particular 3D slice of 4-space, put all of it on one side of a plane in that 3D slice, stick the knot to that plane at 3 points (remove the bit of the knot between them), and then revolve what is left of the knot around the plane (so, the projection of the knot as it is revolving into the 3D slice will look like the knot is being squished into the plane, unsquished on the other side, and then doing that backwards. But this is only the projection into the 3D slice. Really, when revolving around the plane, as the direction normal to the plane within the slice gets scaled to zero, the same amount is added first in one direction normal to the 3D slice, and then as-
... blah, I am going on too long in describing this. I'm typing on my phone, so I can't effortlessly see all that I wrote, so I might be repeating myself.
It rotates around the plane. Each point in the original knot traces out a circle in 4-space. )
Despite what some folks claim, the three letter agencies don't break the law. They have lawyers and general council, and bend over backwards not to do anything illegal. This is not to say that the law is always sensible, moral, or interpreted the way an average individual might interpret the law.
That'd not an argument that carbon-neutral supersonic jets are impossible and should be abandoned.

Biofuels doesn't necessarily mean subsidized corn fields... for example, algae and bacteria grown under specialized LEDs powered by renewable energy are another path forward.

Perfect is the enemy of the good. We can research supersonic jets in addition to better electric storage and propulsion systems.
I've got a refurb Monoprice maker select mini at home I think I paid ~$100 for that prints like a champion. Brint build area is not super big, but it's large enough for what i need most of the time.

No setup or fiddling with the thing for hours before your first print either which is nice.
That's not how it works. Big people get away with breaking big rules, but little people do not get away with breaking little rules.
On the other hand, next time you find yourself in a regional jet in the US, odds are pretty high it was built by a scrappy manufacturer of Brazilian bush taxis, namely Embraer. So it's not impossible to break the Boeing/Airbus duopoly if you have a suitable niche (regional jets, hypersonic aircraft) just very hard.
The human body is truly incredible, and the immune system in particular. Each of us has a custom designed garbage collection system tailored for our bodies. I predict the next big leaps in medicine will come from empowering and leveraging that system to fight everything from infection to cancer.
There are different things that could be found through tests, but I don't think I've seen tests being really extensive.

The interesting questions to me:

- Can a difference be heard?

- If yes, are people able to reliably identify A vs B (as in, can people identify whether it's A or B rather that whatever they listen now is not the same as the last they heard)

- If they can identify a difference, which sounds better to them?

- Do different headphones give different results?

- Same question with headphones vs speakers?
No, even in a monorepo you can submit the code whenever you want, and have CI publish a versioned artifact from just that submodule / package / whatever. Other client code in the same repo can happily keep going along never caring about those new changes until later when explicitly ready to adopt them via adopting the new version.

There’s no reason why CI in a monorepo can’t create versioned code artifacts like Python packages, Java libraries or special jars, Docker containers, whatever. This is a very common workflow, e.g. combining a monorepo with in-house artifactory.

Definitely not talking wire format changes. Talking about publishing versioned libraries, jars, etc., from subsets of monorepo code.
A Dramatic Tree House by Budget-Conscious DIY Builders
Very close to a real world scenario. I usually bring it up to compare big teams to small. (Our small team was being replaced by a big, expensive team, and I found an issue in 15 minutes that the new team had created - despite sharing my findings immediately, it still took their team weeks to find it "on their own", admit to it, and finally fix it.)

There was a CAPTCHA used to prevent bot spam on a contest entry portal. The code that randomized the image displayed was modified to be stored in an application cache that persisted across sessions (meaning every "user" saw the same image and could use the same answer). Guess how useful that was in preventing bot spam?

(The fix was to delete one or two lines of code that were not only not helpful, but obviously harmful!)
Would an alternative be to use version control and use descriptive commits and commit often?
I've never understood how it is that we can't detect and prosecute organizations when they're big enough to provide individualized customer support over the phone.
A non trivial number of people don’t realize you can install apps. I know several non tech 65+ iPhone users the vast majority don’t use any app not installed on the phone.

Young kids seem to install apps all the time, but parents quickly learn not to let them spend any money on in app purchasing.
Indeed. The world needs less founders and more civic minded political candidates.

No startup is going to fix a nation’s dysfunctional healthcare system.
Citizens United vs FEC is unrelated to what you are talking about. The court decision did not make contributions to politicians unbounded. The set ceiling is still in place. It did unbound the amount of money someone can spend on political speech that is not affiliated with a politician's campaign. You can donate only a set amount of money to a candidate that wants to breed purple lemons. You (or a separate group you donate to) can spend an unlimited amount of amount of money to advertise in favor of breeding purple lemons.

What you seem to be describing - disguising a donation from one individual to a politician that is over the contribution limit as several donations from different many different people - was and still is illegal.
That depends on whether you're in Asia or the USA. On the USA the 787s are mostly displacing routes that would've been operated with connecting partners (eg United to a bunch of Chinese cities), vs in Asia where they're used on high density high frequency regional routes.

The 767 was a great plane for those routes especially on the shorter end (like TYO-SEL or TPE-HKG). The 787 is significantly heavier so performs poorly in terms of fuel efficiently until it's flown a couple thousand miles to make it up in better cruising performance.
Yes of course. Just tax carbon (and use the proceeds to give a flat rebate to everyone).
Greppd.com – Location based job searching for developers
I don't have an answer, but I appear to be accidentally (and for now, hopefully only partially) making that transition right now...

I am an 'older' engineer (in my 40s) who just came off a decade-long stint doing solo freelancing, mostly for one rather laid-back client - so it's pretty much been a career progression break. Started a 'real job' about 6 months ago, as an IC, in a local (long way from US) startup with approximately 60 people in tech department. Did a simple project to familiarise myself with the code base and tools - then started working on a larger, multi-team project...

Then was person-in-charge for the project within my team...

With one, then two (and now three) of my teammates working on the project 'under me'...

Then was committer/deployer-to-prod of project for my team...

Then another teammate decided (AFAIK it was his choice) to move teams, and I agreed to take his deputy-team-lead and code-owner responsibilities - in February when his move is done...

Then a bunch of other teams got involved in the project, many of them committing to my team's repo - so now I'm mostly reviewing, commenting, advising, coordinating...

Then team lead goes on New Year holiday, now I'm running stand-ups, approving early leave for Christmas/New Year's Eve...

I am now (while TL is on holiday) apparently reporting directly to VP of Engineering, who is Austrian and a bit of a hierarchy guy, and who has barely spoken to me before this week...

In the course of about 3 months I've got from engineer to at least temporary team lead and code/project owner. Although things have gone a little Mythical Man Month with me as the bottleneck, I'm winging it for now. I'm trying to be fairly strict with code quality - although that's weakened as deadlines approach and pass - but I'm probably a little soft on people management, which I instinctively don't really want to do, so it's easier to say yes.

It's more, and different, stress from what I've been used to in the past, and it's not necessarily bad, just new. I am expecting to speak to someone fairly soon about increased compensation for increased responsibility, which is noticeably something that has not come up at any point so far.
Sounds like (from my non-military perspective) the difference between officers and sergeants.
You have those same challenges or worse with a website, except number 2. And for the vast majority of apps, that’s no problem. I’ve submitted 100+ apps to the App Store and never had an app that didn’t pretty easily get approved.

And I think most users have more than one screen of apps at this point. And are more likely to see those icons than a given browser bookmark.
> I am afraid there is nothing that can stop [academic physicists]. They review each other’s papers. They review each other’s grant proposals. And they constantly tell each other that what they are doing is good science. Why should they stop? For them, all is going well. They hold conferences, they publish papers, they discuss their great new ideas. From the inside, it looks like business as usual, just that nothing comes out of it.

Sounds like academic physics is the old academic scholasticism. And this is true. When Newton made a successful coup in the European academic scholasticism and defined himself as the new grand master of the European scolasticism, all the Peripatetic Doctors of Philosophy became Newtonian Doctors of Philosophy and started to write commentery on Newton instead of Aristotle. They changed their professional name to Natural Philosopher to echo Newton's book to show thet they belonged to the cult of Newton. In the 19th century they changed their name again to "physicist" to remove any association with philosophy. But they forgot to change their real professional title which was and still is Doctor of Philosophy. An academic who calls himself a physicist today is a direct professional descendant of Peripatetic philosophers of old. It's the same profession. And finally someone inside the profession wised up and is showing how these useless Doctors of Philosophy corrupted the old science of physics to climb the scholastic hierarchy.
Much as you wish it were the case electric battery power does not have enough power density for mass aircraft transit yet. They're much too heavy. We're getting there but we're still a good decade away. You're certainly not going to get supersonic airliners with electric aircraft. (Elon Musk keeps talking about it but even he states that the energy density isn't there yet.) People need to realize the difference between fiction and reality.
I don’t mean that Tesla will an anamolous number of disengagements, I mean that that they will file a report at all, which they haven’t done in 2017 because presumably they stopped autonomous driving on real roads. These reports don’t cover systems like the current Autopilot, as it is not considered autonomous driving.
Everything we know about how Tesla operates as a company indicates that they do not freeze development of a technology or component and then spend four years testing and verifying it before deployment.
While traditional cloud providers have certainly made it difficult for open source companies to monetize the cloud, it seems that the marriage between decentralized cloud protocols and open-source is opening up new opportunities for OSS monetization.

Decentralization takes the principles of open source and applies them to the very infrastructure on which software runs.

At Storj, for example, we have an Open Source Partner Program that attempts to solve the ‘Amazon Problem’ by enabling any open source project to generate revenue every time their end users store data in the cloud.

Storj tracks usage on the network and returns a significant portion of the revenue earned when data from an open source project is stored on the platform. Critically, this enables open source projects to derive sustainable revenue from usage, whether by commercial customers or non-paying open source users.

In my opinion, this can help drive and support the next wave of Open Source monetization models.
I wonder if the flow could be improved by smoothing the inside of the siphon tube, perhaps pumping a mild solvent
through at high velocity for a little bit would streamline the interior surface. As it is each printed layer is apt to contribute some turbulence.
Do the math. 7 cameras at 1280x960 with 16 bpp at maybe an average 30 FPS and you're talking 500 MiB/s of just raw image data you would need to record. Where is it going? Not on any sort of storage and not over the wire to Tesla, that is clear.

What curious people have found is that the car just sends a basic disengage report with maybe 10s of h264 video or spaced far apart raw images from the cameras.
US car fatalities are at 1.16 per 100 million miles in 2017 [0]. Anecdotal evidence for accidents based on multiple orders of magnitude less miles doesn't say much (fatalities was the first data i could find) [1].

[0]: https://en.wikipedia.org/wiki/Motor_vehicle_fatality_rate_in...

[1]: 20 mph average driving rate (guess on my part but they stop a lot) * 8 hours a day * 5 days week * 50 weeks a year * 40 years = 1.6 million miles
Hashes do not uniquely describe things. There are an infinite number of alternative texts that also match your hash that describes all of Shakespeare's works. A hash function is pretty much just a very lossy compression algorithm.
No it doesn't. I laugh at the people who pay out the ear to skip 10 minutes in a line. Most of your time is spent emptying your pockets and unloading your suitcases into boxes and clear doesn't help with that at all. (They keep adding more and more requirements for what can't stay in your luggage.) The solution to faster air travel is to delete the TSA.
Totally unsubstantive, but an interesting anecdotal psychological phenomenon occurred while reading your comment. Before I got to this line:

> As a Brit

I read your comment with no accent, but after I read that line my brain switched your "voice" to a British accented one :-)
The will not be able to fly overland in most places while going supersonic for the foreseeable future. The real demand for this plane is going to be long haul business travel where flights are 10+ hours and those of us doing it regularly are already forking over 4 - 7K per ticket normally. Fortunately if you look at the world most of the cities you will want to fly to are basically on the coast, or a short distance inland.
RealTime Apps in Node.js (new library)
In general, in the USA, anything that the US federal government makes is public domain copyright wise. For the NSA, there are obvious laws on secrecy for most of what it's doing, but they are different to copyright. Also, sometimes the US government is letting contractors write the software and if they license it, it obviously won't be public domain but the specific contractor will hold copyright.

This question has been explained a bit in a blog post by the pentagon [1]:

> While all of the work done by Federal employees remains in the public domain with no restrictions, public contributors enjoy the protections of widely adopted free and open source licenses. As projects mature, the aggregate work — with all the patches, bug fixes, and additional features — will fall under the license associated with the project.

[1]: https://medium.com/@DefenseDigitalService/code-mil-an-open-s...
Dan ALMOST Everytime I see you post you prove once again how closed minded you are.
I think this guy's post had merit.
The echo chamber you have created sucks.
I remember back when you were not so trigger happy.
Seriously I've been here since 2010 and lately you sound like the church lady
Amazing! I would love to see something like this integrated into browser devtools. There should be massive perf benefits if you could work directly with the JS VM, for instance.
My understanding is that, in the US, your medical records are the property of the healthcare provider, absent some contractual language otherwise. The new thing was the federal law that required them to give you a copy of everything at cost. Before that, the only sure way to get a copy of your medical records was to sue the provider and perform document discovery.
There needs to be a specific phrase to replace the phrase "identity theft". I think the phrase "bank libel" could work as it is not a phrase currently used very often. Unfortunately "bank fraud" is a common occurrence, so not a great name for this specific type of bank fraud.
Ask HN: Go-to web stack today?
As a long time software developer who hasn't done full stack in awhile (since 2013), what's everyone's go to web hosting stack today? Wanted to quickly put together a simple website with react/node.
I don't get an excitement. There is already IDA Pro and Binary Ninja, developing at a big pace and with actual support. Moreover, there is FOSS radare2[1] and Cutter[2], that also being developed at crazy speed. We have even work in progress decompiler radeco[3][4], though there is still a lot to be done. If people would contribute - there is a lot of time until March (time of GHIDRA release).

[1] https://github.com/radare/radare2

[2] https://github.com/radareorg/cutter

[3] https://github.com/radareorg/radeco

[4] https://github.com/radareorg/radeco-lib
Fewer Americans bike to work despite new trails, lanes, bicycle share programs
Ha, I just picked 5/6 the 128Kbps tracks. Maybe my ear has become accustomed to the compression artifacts and misses them when they're not there!
What would the motivation be to not pay for it? Nobody gets rewarded in government for not spending money.
Ask HN: Are you an software engineer willing to take a survey
I’m trying to gather data to validate a startup idea.
https://goo.gl/forms/YMMzE5i3LKyATv843
There is another company working on a slightly supersonic private jet (Mach 1.4).

https://www.aerionsupersonic.com

So there may end up being other options.
you don't need to train in the car or to do massive scale inference, so you likely don't need anything close to the performance of recent TPUs
Agreed. It's your private data and it's also your body! If you end up getting worse treatment due to not sharing data, it's on you. As an adult and the owner of my body, that's my right to decide for myself.
there's no training going on in this case
You are ignoring the cost of human labor which in the US is minimum $7.25 an hour which is why waymo is targeting taxis as they don't have to pay those human labor costs if they can get rid of the drivers.
Can you please not post flamewar-style comments to HN, regardless of how wrong or provocative you find another comment? We're trying for better than this here.

https://news.ycombinator.com/newsguidelines.html
There's a reason they're called lobbyists and not experts.
I don't think it's quite "the law and personal morality" as much as it is "not my money to pay for the licenses, whereas I might get fired, pay a fine, or go to jail if I give the direction to steal the software."

In the same way, it's not my personal morality or the law that prevents me from stealing the supplies my company needs in order to help my employer cut costs or burning down the buildings of our rivals. Those things wouldn't help me personally but they expose me to lots of risk. That the law and morality agree with self interest is a happy coincidence.
Implying three letter agencies can subvert the courts.
Introducing streamy-db: a deterministic database
Or just use iOS, because unless you’ve heard about an exploit that I haven’t, it’s impossible for any app to read (or write) your texts or calls. Or anything at all outside its sandbox unless you explicitly give it permission. This includes location, photos, contacts, microphone, etc.

In fact, were I a malicious developer instead of the benevolent one that I am, I don’t think I’d touch iOS unless I could find a security hole or I was going to trick users into giving me permissions, because I don’t think there’s much attack surface otherwise. Open to correction though!
Seems like it would still be enjoyable to someone with empathy enough to identify with a human being in that situation. Characters don't have to be good people to be likable. And for that matter, characters don't necessarily need to be likable to make a book enjoyable or interesting.

It's been a while, but I remember Holden as a flawed and frustrating individual with a good heart, who's in the process of learning that's not sufficient to carry him through life.
> 99% of HN readers are not representative of the intended general userbase of 99% of the apps for ios/android.

Not that I agreed with the website vs. app debate, but with all respect, that "userbase of 99% of the apps" was likely made up by those people who would also begs for bigger keyboard on their phones so they can send SMS a bit faster back in 2006.
I don't really understand how the lossy vs lossless argument turned into a chest-beating contest about whose ears are the best.

The point of lossless audio compression is archiving - knowing that you can make a first-generation encoding of the audio you have stored for any new device or format in future.

If you want to listen to your FLAC files, great, you're not losing anything by doing that - just don't try and tell me that it's an aesthetic choice that makes the slightest bit of difference to the experience.
That sounds like a good example when getting pushback on estimates: "Here's a 24x36 picture in a wooden frame, how long will it take you to hang it on that wall over there?"

After getting an estimate ("15 minutes?") come back with "OK, let's plan it out. Does the picture have hanging hardware on the back or are you going to need to get some screw eyes and wire and install some? That's a pretty heavy frame, do you have good enough wall anchors? Are you going to need to drill to put them in? Do you need to be going into studs, and do you have a stud finder? How high are we going to put this? What if I decide I want it 4 inches higher? If I come back in 15 minutes and ask why it's not up are you going to want to punch me?"

"That's why an off-the-cuff estimate isn't reliable and why we need to do some review before giving a good one. Even with that review, there's a good chance we're going to miss something at first (like the steel support beam that runs down the interior of that wall)."

See also Yak Shaving and the intro of Malcolm in the Middle Season 3 Episode 6 "Health Scare"