skysight-inc/HackerNews huggingface dataset:
>That's really far into the future if ever.

It's really not. It's not a far leap from "aluminium tube in space" to "slightly larger radius aluminium tube in space rotating along its axis surrounded by liquid hydrogen".

We don't need some magic force field to shield against radiation - water has already proven it can do this. Liquid hydrogen is an even better shield and it's something we currently have the technology to use.
Tracing a parabola into short segments isn’t too horribly expensive. Intersecting that parabola with static and dynamic world geometry is less cheap.

Fortnite used to have pretty bad early game performance. Games are defined by their worst case. Early game could have a few dozen players firing high-rate of fire weapons. 100 server shots per second would be a regular occurrence.

Non-hitscan projectiles might also increase networking costs. Although for fast-moving invisible bullets you could probably don’t need to send them.

The actual server cost for shooters is generally resimulating the world for each player. Adding simulated bullets would make this even more expensive.
SCTP has been used in professional settings for telecoms for at least a decade.

The kernel implementation in Linux is stable and has been for many versions.

There are gotchas:
- Cloud support for SCTP is poor. Azure has no support for SCTP on its load balancers.
- Kubernetes support is similarly poor - SCTP support is beta and behind a feature gate.
Not sure. I got mine off eBay as memento, having read it back in school days many years ago. Very much identical to this lot:

https://www.ebay.com/itm/1955-Traveling-in-Space-M-Vasilev-R...

There's also an expanded post-Sputnik edition of it I think.
https://news.ycombinator.com/item?id=21693065

https://news.ycombinator.com/item?id=21657930
Maybe there should be a citation? I have a new evidence or an original thought to add to the Dyatlov Pass Incident wiki page.
It's basically the only unit used for LSD dosing and purchases
Generally speaking it feels better and makes for better gameplay, even if that gameplay is unrealistic. Most games have projectile weapons that have some lead time so there isn't much of a performance reason.

HN users tend to think deeper/more complex simulation is directly correlated to better gameplay (see the sword conversation above), but one of the interesting things about games is abstraction.

That said more simulation focused games with larger maps (some Battlefield games, ARMA) have bullets with travel velocities and bullet drop.
The solution starts with manually verifying products. I'm not convinced that it's impossible for Amazon or other stores to have a quality verification system where they have people hired specifically for this purpose. Maybe even a third party could specifically do this. You don't have to do it for every single item, just do it once whenever someone wants to list a product on the platform. Whenever reviews start complain about bogus products, investigate, and if they changed the product from the last time you verified it, remove them from the platform for a period of time.
Chinese hacking group has found new way to bypass two-factor authentication
Perhaps that kind of forcing function is exactly what is needed?
Personal, expensive, and hard to evade, liability is the solution. Make Amazon liable for the products they sell and in turn Amazon will move mountains to make their sellers more liable.
Does not mean anything because of commingling. If you have 500 merchants selling the same item you have no way to control whose inventory you get things from. No filtering by merchant doesnt help, I wish it did. As a result I have mostly stopped buying from Amazon after running into a few obvious fakes.
There are worse places to be unable to stop visiting! Merry Christmas.
That works only if the app authors have no basic idea of security
Days until Dyatlov Pass Incident mentioned on Hacker News?
Looks like some coreless placeholder article. It actually says nothing at all.... New C19 document with... nothing new (as per their own description of it) and nothing actually new since C11 anyway.
Probably after the original competitor hired someone, probably an examz employee, to backchannel the takedown for a princely sum.
Definitely a good way to prep the students for the corporate world
Fun aside, if you buy a cheap wall clock from a big box store, you can often swap out the clock movement with a vastly superior one for very little money. A nice Seiko movement with a sweep second hand can be had for under $20.
HN can definitely be annoying when commenters act like they know more than they do. No question about it. But please don't let it trigger you into lashing out, which only makes the thread worse. Instead, remember that the vast majority of readers are here to learn, and if you know more, sharing some of what you know, or some of your experience, is really helpful to them.

https://news.ycombinator.com/newsguidelines.html

p.s. On another note, can you please stop creating accounts for every few comments you post? We ban accounts that do that. This is in the site guidelines too. HN is a community. Users needn't use their real name, but do need some identity for others to relate to. Otherwise we may as well have no usernames and no community, and that would be a different kind of forum. https://hn.algolia.com/?sort=byDate&dateRange=all&type=comme...
My school was the same. The teachers told us straight up, they didn't care if we showed up or not, we were paying to be there, the teachers got paid the same whether we showed up or not and in the end, if we chose not to show up for a lecture, there's a good chance we wouldn't know the material well enough to pass the tests on it anyway, so our grades just always reflected our own efforts. I remember missing one stats lecture, for a good reason, and being nearly completely screwed over for a bit after that. I ended up having to teach myself the stuff I missed just to stay caught up.
>this irritates me even more that its been known since the 50's and we still put up with it.

Throwing a label on it doesn’t make it a bad thing. Authority can be a gift. It helps people thrive by giving them the motivation to live up to their potential. If everyone just let everyone else do whatever they wanted, humans wouldn’t have gotten very far. Of course, freedom to choose does a lot of good too. There is a balance to be had.
His foresight and confidence is commendable. So is his leadership - steering a company of tens of thousands of people towards the vision/mission he sets is incredibly hard to execute, and he's done it for decades now
I'm in the US, but I'm sympathetic.

You'll probably have more luck if you're more specific about your capabilities. The first questions prospective employers are likely to have, on reading your post, are "How have you been teaching yourself to program?" and "What technologies have you been using, and what have you done with them?" If you're able to edit your post, you may want to include some information along those lines.
Please don't. We don't want religious flamewar, nor snark for that matter.

https://news.ycombinator.com/newsguidelines.html
On the software side of things, the good news is that the combination of a decent conservative advancement detection scheme and speculative contacts can get you down to microsecond tier fidelity pretty cheaply. (Incidentally, this specific problem is why I built that particular form of continuous collision detection :P) You're definitely right though that it's not going to magically solve away hardware level concerns.

On that front, one of the things I had to end up doing to ensure physical consistency was bite the bullet on a level of indirection. This can be flat out necessary on a gameplay level- allowing full 1:1 control often leads to pretty nasty pathologies and difficulty with correct physical responses. A truly physical character's motion can never truly match the input motion, since your controller is dramatically more nimble than even a light 2.5 pound longsword and the physical sword may be interfered with. This introduces some challenges on the side of user responsiveness and intuition, to be sure, but the physical motion also smooths out input and seems to make small scale controller imprecision a distant concern to the player. If the player can adapt to the physical indirection, they tend to allow a lot more leeway. This becomes even more valuable when trying to hide latency. If you have physically reasonable accelerations, networking overhead becomes a whole lot less objectionable.

There are definitely tradeoffs- the feeling of being a puppeteer takes some time to get used to.
I attended a private high school that gave us a remarkable degree of freedom at a young age. We were allowed to drive off campus as upper classmen, choose a wide range of electives, and generally were treated as the near-adults we were.

Recently I read that my high school is instituting a random drug testing policy. I wrote a letter (that I'm sure they promptly ignored) saying how the thing I most remember about my high school experience is that I was trusted with a high degree of autonomy, and in return I was expected to act responsibly and to think about issues with a seriousness not often expected of teenagers in our society.

It seems like more and more these infantilizing policies are becoming a norm in our society. Instead of trusting human beings and granting them personal autonomy and responsibility, we act like imposing ever-greater layers of rules and controls will produce good citizens. Frankly I think this is a disastrous approach and is creating entitled, helpless, and childish adults. It's a massive disservice to ourselves and our society.

I'll never forget my first day of college. Lots of the other kids in my dorm were running around like crazy people. You could tell they'd never really been free to be themselves and run their own affairs. I felt very different. While it was a significant change to be totally on my own, it felt like a natural extension of the freedom I had slowly been granted over the previous two or three years. I was ready to deal with it. I didn't do everything perfectly, and I could have made better decisions, but by and large I felt like the transition to adulthood was comfortable and natural. The more we impose these command-and-control models, the more I fear we are robbing our children of that same feeling and casting them into adulthood with poorer tools than we were given.
Oh the egg is a lovely read. Ill give it a slower read tonight before bed.

The video made me feel a bit argh tho. Heh
Have you done SCTP over the public internet?

I haven't tried it myself, but always heard the only way to make it work was encapsulated in UDP.
We still don't know who was Ded Moroz's son or daughter though.
I've did LSD quite a bit in college. When it goes right it's unlike anything you've ever experienced, when it goes wrong it's... unlike anything you've ever experienced.

For anyone thinking about trying it, i'm not going to say you should or should not. Just understand, you're dealing with something poorly understood and incomprehensibly powerful.
I'm responding to your point that Amazon does "little to nothing to ensure authenticity for consumers."

I disagree, and I'd imagine the plaintiffs in the following cases would as well:

https://www.courtlistener.com/docket/16620676/v-fjallraven-u...
https://www.courtlistener.com/docket/16601182/ems-imports-ll...
https://www.courtlistener.com/docket/16462329/ly-berditchev-...
https://www.courtlistener.com/docket/16139905/eng-sales-llc-...
https://www.courtlistener.com/docket/16610999/big-birds-llc-...
https://www.courtlistener.com/docket/16440121/oj-commerce-ll...
https://www.courtlistener.com/docket/16438724/oj-commerce-ll...
https://www.courtlistener.com/docket/15028460/dj-direct-inc-...
https://www.courtlistener.com/docket/6846972/starke-v-tp-lin...
https://www.courtlistener.com/docket/13477612/johnson-v-inco...

Or for that matter, the 12,000+ people who've signed a petition complaining about Amazon's overzealous enforcement at https://www.change.org/p/jeff-bezos-amazon-com-should-only-s.... Read through a few of the comments there.

False positives rates go up when trying to minimize the false negative rate. As such, evidence that the false positive rate is high shows that actual counterfeits are being enforced heavily as well.

Anyway, OP doesn't mention any specific actions they expected Amazon to take that weren't taken. It doesn't say, for example, that they asked Amazon to take down counterfeits and were refused.
Merry Christmas!

Shout out to everyone away from home this year. Wherever home is, and for whatever reason. Big hugs, hope you manage to find some joy anyway.
I saw Pollock's drip work in a gallery for the first time a few days ago, and it's the first and only art that really resonated with me. It looks like how a lot of music I enjoy sounds, if that makes sense.

It's baffling to me that someone could think his work is just random noise. (A lot of other abstract art in the same gallery, some clearly inspired by his, seemed much closer to that.)

Forgeries can be programmatically identified because authentic Pollock drip paintings contain ratios and fractal patterns often found in nature: https://www.discovermagazine.com/the-sciences/pollocks-fract.... (It's likely he wasn't trying to do anything like that intentionally; he just intuitively made what he felt would look good.)
I'm a moderator here; it's my job to prevent this site from destroying itself, which is what subthreads like this converge to.

I said "all" as a way of addressing every commenter who was posting in this spirit—not just you. Your comment wasn't so bad, since you were simply describing your experience and your feelings. But it's the root of exactly the sort of flamewar we don't want on HN. The internet can't handle arguing about this kind of thing without losing its mind.

https://news.ycombinator.com/newsguidelines.html
100ms a frame is a vaguely interactive slide show.
Is the Trump attack on Huawei a way to catch up with them because they did the work and we did not?
Not realistically, no. For example

> 40 percent of the astronauts who lived on the International Space Station suffered some sort of damage to their eyes, including optic disc edema, globe flattening, and folds in the choroid, the blood-filled layer between the retina and the white sclera.

In order to modify humans not to experience these effects in space, you would need to take those 60 percent of astronauts who did not suffer these effects, have them reproduce, check that their children inherited the right genes (i.e. the genes that insulate them from these effects), wait for those children to grow, train them as astronauts, send them into space, check for any other health effects, bring them back to Earth, make those people who do not experience adverse optical effects have children of their own who are immune to other health effects of exposure to microgravity, check that these children have all the right genes, etc. Rinse and repeat over generations. Forced evolution, basically.

Gene therapy would dramatically expedite the process, but you need to first identify which genes protect astronauts from xyz health effects of long-term exposure to microgravity, and then modify the genes of your astronaut candidates to fit the right genetic profile. You must also avoid nasty side effects. If the procedure you used to tweak the genes of your astronaut to prevent bone density loss, for example, results in the astronaut having a higher likelihood of developing a cancer, you must find another way to protect the astronaut from bone density loss without increasing his likelihood of developing a cancer.

A more "brute force" approach would be to send a large cohort of randomly selected humans into space, say 10,000, have them spend a few months in orbit, monitor them for any adverse health effects, and select those few (if any) who did not experience any side effects to be the parents of a future, genetically enhanced, astronaut corps. While everyone else is crippled to various degrees by their stay in space.
Amazon has caused this to itself in order to maximize its own short-term profits. In the past 1-3 years their goal has been to reduce their own inventory by shifting it to 3rd party sellers and let them deal with the overhead of inventory. This is why counterfeits and crappy products have been proliferating on Amazon and why I have started to avoid purchasing from Amazon all-together. I wonder if they realize how much damage this is costing them in reputation or if they don't care because it still results in more profit for themselves.
Please don't copy/paste comments here. It strictly lowers the signal/noise ratio. Especially please don't do it as an end run around moderation—that's not cool.
I seem to recall an author complaining about some random on Amazon "selling" a book that the author hadn't finished writing yet.
The State of Nat Traversal (2014)
It would be interesting to get an account of the usage of the term programming through the development of linear optimization/programming and its usage during WW2, the simplex algorithm, etc, until the creation of fortran not a decade later.

I wonder how dynamic programming fits into all this and when people started to investigate classic problems ala knapsack.
Agreed, but because of Unreal Engine's licensing model change.
The Coriolis effect

https://en.wikipedia.org/wiki/Coriolis_force
Please remove it immediately and make it your top priority.

Edit: it’s a quote from the VS Santa hat guy stop flagging me immediately and make it your top priority
>Is it online anywhere?

http://www.flibustahezeous3.onion/b/167460
But why would you want a nice movement on a cardboard clock? At that point you spend another few dollars for a nicer package.
I appreciate your concern for the quality of HN, but I don't think we need to consider this a job ad—the discussion is more interesting than that.

It's true that the "Who Wants to Be Hired" monthly submissions would also be a great resource for the OP.
Due to what we know of history, universities who deploy this type of system will clearly not be the melting pots of tomorrow's leaders, geniuses, and world changers. Neither do I see how this helps a university's bottom line. To me this seems only like a university-killing move, by forcing many talented folks to non-campus ways of learning - or other institutions that respect diversity.
Spitballing here.

Model a sword as a point of rotation e, (elbow, shoulder, whatever, have the animator figure it out) location of the tip point p, and the linear velocity vector v of its tip. Look at the letter 'F': The elbow is the point at the bottom, the travel of the tip is the top bar, the travel of the hilt (not modeled) is the shorter bottom bar. The travel of the tip is the parametric equation `tv + p`, which defines the line `(tv+p)d + e` You have one line for each sword. Solve for the intersection of the two lines. If t is outside the bounds of your framestep, they do not intersect. Do basic comparisons on the length of the arm/forearm + sword length to figure out if they connect. Bonus: gives you one character slashing the others' wrists for free.

Piercing attacks are just hitscan.

If you really need to model elbows that are moving (probably only for characters on horseback while galloping) you'll need to parameterize the elbow point. Use the character's velocity vector I guess; I wouldn't do anything more complicated than that. I suppose that also works for combination slashing/thrusting attacks?

I'm too lazy to plug that into the line intersection formula, but it seems like a fairly basic linear algebra problem. Unless you're trying to make it super hyper realistic, (don't do that) I don't understand why the computational complexity is a problem.
From my perspective though, libVTE performance is terrible. On modern systems it may not be a concern, but on some of my older systems VTE terminals are unusable for any significant throughput of text (while xterm and rxvt run like greased lightning).

While I've never benchmarked them, the original NT console running on that same old hardware feels roughly in the same class as xterm. Per the dev response on the Issue, it sounds as though not too much has changed under the hood. If adding support for such typographies would put it in the same performance class as VTE, I'd consider that a serious regression (at least an order of magnitude).

Or are you saying that the Windows terminal has already regressed that far?
The price of several of them also very much depended on the low cost of assembling small, simple boards.

Commodores price points would have been impossible with larger boards with more components, for example.

The Apple II was crazy expensive in comparison to many of the other 6502 based computers.
There have been very few men in history nicer and more considerate than James Clerk Maxwell, and he made the biggest leap of genius in physics ever with electromagnetic field theory, the foundation of everything that is modern in physics. Well, there is statistical physics too, which he also was a founding father of.
A Digital Christmas Wish for 2020
Yes, we should be so sad that fascist uprisings threatening to exterminate the poor, disabled and non-native were instead defeated with help from friendly socialist countries.

Not all protests, uprisings and revolutions are good. Look at their class character and composition.
As far as I know there is nothing like in the horizon for next 30 years and no money for it.

As I said. Technologically possible. Plans or the budget are not there.
Japan Shrinks by 500k People as Births Fall to Lowest Number Since 1874
Merry Christmas friends!

I met a lot of nice people thanks to HN this year, and I'm very grateful for that. All the best to everyone!
”Our European visitors are important to us.” I’m trying to imagine how they decided to go with this headline for the screen that tells European visitors to get lost.
The submission URL got messed up somehow. I think you probably mean for it to go here: https://www.newyorker.com/books/under-review/the-house-of-go....
The Princeton Institute for Advanced Study.
Traffic Circles Are Everywhere in France. Not Everyone Is Happy
Yes, the quote was before he added it.
This sounds a lot like what GP is saying, a time integration algorithm to solve a set of ODEs. Probably it's a variant of velocity Verlet?

https://en.wikipedia.org/wiki/Verlet_integration
My Geiger counter fires about once every two seconds from natural background (and would on most parts of the world due to granite, cosmic rays, radon, etc.). When I put my uranium mineral near it it goes off 600 times per second.
Those last to modernize will be the most modern. Skipping whole generations of tech for the newest.
Also an OCaml hacker: http://caml.inria.fr/pub/ml-archives/caml-list/2000/08/6b8b1...
In this season of using billion-gate superscalar CPUs to buy socks, we are being encouraged to brush up on EE fundamentals like flip-flops.
If you email hn@ycombinator.com we might be able to help.
Since she mentions it is on sale, the answer is most likely Swordheart: https://www.amazon.com/Swordheart-T-Kingfisher-ebook/dp/B07K...
Ruby 2.7 experimental pattern matching in few examples
There's a game named Kholat too. I liked the atmosphere but didn't end up playing much, got kinda bored. It's a puzzle horror game.