skysight-inc/HackerNews huggingface dataset:
Is there something like this regarding homogeneous coordinates and the projective plane?

It's strange. Somehow I have now problems whatsoever regarding the use of 4-component vectors. As long as the z component stays one, I'm all set. But lately I'm trying to understand the construction of projection matrices and how to apply the knowledge of homogeneous coordinates, for example shadow mapping.

Parallel lines suddenly intersect? 3D space is just a projective plane? Now everything is all weird...
That makes sense. With the tombstone method, hashmaps get worse with age.
My Analysis of the Philosophy in Westworld
Tesla discontinued battery swap because people do prefer to spend 1/2 hour charging, even when traveling with sleeping children.

Note that this is only an issue for long-distance travel; for day-to-day driving, most people will charge in their garage, their apartment's garage, or at a street-side charger.
Generally speaking, I agree with the overall content of your post. However your first and last sentences really emphasise for me the real problem: oversimplifying and stratifying the discussion.

"Nonsense" is an extreme overstatement, there are nuances to both arguments.

"This is economics 101" is exactly the problem: we're dealing with an economic system that isn't working. Questioning economics 101 is precisely what's needed, and I'd argue that while your arguments are sound, they've been treated as absolutes, which they're not.

A farmer needs to buy their tractor from a tractor manufacturer and fuel it from a fuel extractor/generator, but not everyone need be involved in this cycle and not every step need be specialised in a completely unary manner. Also, the emphasis on individual economic efficiency over efficiency of communal benefit is important: if a farmer can produce less - but sufficient - food, for less - but sufficient - material profit, while not producing negative impacts for others elsewhere in the economic system at large, that's a more "efficient" overall system.

The most important word in the excerpt you quoted is "most"
I expect hackers to like decentralization where it makes things more efficient, regularity where otherwise things would be a mess, and to severely dislike populism and xenophobic rhetoric.
Smash the control messages, smash the control machine.
Sure. I'm curious if he would extrapolate from his experience with mental illness to physical illness. I have a friend with cancer now and it is very very hard work for his partner.
Judging by the down votes you must be wrong. Welfare is indeed fairy money.
There are business logic bugs, and there are memory corruption bugs. One of those leads to RCEs a lot more often than the other. One of those is a lot easier for the compiler to prevent than the other.
I'm saying that austerity is being disguised as near-post-scarcity. Jobs are hard to come by in the US at the same time that infrastructure is crumbling. That's a lack of jobs not a lack of necessary work.
Surprised no one has mentioned that this could have been a TiVo problem -- either an error in their programming data, or, more likely considering that only one user seems to have reported it, a malfunction in an individual TiVo unit. I've had a TiVo for years, and they do screw up or crash occasionally.
> a 10 year old car raises reliability issues with many people who are afraid to have a problem while driving.

In ~15 years of car ownership, I have never owned a car less than 10 years old, and I don't understand this at all. Currently I drive a 2002 Peugeot 307. Regular maintenance costs me less per year than the depreciation cost alone on a new car, and I've never had a breakdown that's left me stranded. Not once.
> they don't need an expensive battery swap every 5 years.

You are right, but ICE cars need all manner of other maintenance often new transmissions or outright replacement. This is a minor issue, and is exactly the kind of problem that the GP poster was talking about. These battery replacements will be talked about like they are a huge showstopper, but the reality is probably closer to wasting a an hour or two at the mechanic or dealership and some kind of fee as they take the old battery for refurb and give me a fresh one.

And someone will figure out how to charge a car on a normal outlet.
This wouldn't show when your ISP is using a transparent proxy. The 'transparent' part that it intercepts the request and responds as if it were coming from who you wanted (eg. 8.8.8.8) when in fact it is coming from your ISP.
Think about happens if indexes don't pre-announce their changes. Is their market impact larger or smaller than if people know about it and "front-run"?

Suddenly someone wants to trade 10x daily turnover in a small-cap stock right on the closing bell. It could be a dumb whale index fund, or it could be an insider trader who knows about a merger, or a sharp hedge fund who thinks the stock is undervalued.

If you're a liquidity provider or speculator, do you want to stand in front of this freight train at all? If you offset the huge liquidity imbalance, how much will you charge to cover your losses if it was an informed trader? Is it more or less than if you know it's an index fund?

Pre-announcing generally lets utilitarian traders execute their trades more cheaply: http://rfs.oxfordjournals.org/content/4/3/443.short

Remember, even if there is some edge in this type of anticipatory trading, competition will reduce its margins significantly. Imagine I announce tomorrow in the Wall Street Journal that I'll buy 100000 off-lease Honda Accords next week from whomever will sell them to me cheapest. Everyone rushes out to buy them on Craigslist or eBay, but only those who make the least on the deal end up selling to me.
It was a simple fact and he admitted himself it was. Though, if you know of a more graceful way to communicate this, please let me know.
But in reality there's more to it, right?

Yes, jobs are available, but they also get filled quickly. There's no shortage. The unemployed can out-bid each other in a "how-low-can-you-go" competition, but that just leads to working poor.
You are lucky. And that is neither here nor there anyway, because even owners of new cars can get breakdowns that require a tow.
Them overpaying doesn't always happen (They don't use the Mankala model for the fun of it. It adds risk due to the capital investment but has been worth it over the long term up to date at least). As I understand both Olkiluoto 1 and 2 have been cheaper then buying from Nordpool to the owners (one of the reasons they wanted the third one). They of course also sell any energy they don't use into Nordpool. These are mostly private companies. They wouldn't do it if there is no profit in it. Why take risks of billions of euros if they stand to gain nothing?

In Finland 40% of energy produced is done under the Mankala model. Out of wind energy the percentage is 57% (so over the average).

Also one of the reason why the price in Finnish Nordpool has been so high lately is the delays in Olkiluoto 3. The actual estimated cost of production (so cost of running) is 3€/MWh. With the price in Nordpool around 30 to 50 €/MWh they stand to make 25 to 45 €/MWh of profit. If they can offload a good chunk of the capital costs of building the reactors to the people buying from Nordpool and get their own power needs at a very big discount (basically the 3€/MWh + (whatever their share of the capital costs is - money made out of selling into the grid) it is profitable to the owners even if the plant itself didn't make money directly.
Perhaps there is no point to the modern electoral college. With a little research, it turns out that the point of the electoral college was to act as a check against a demagogue that could manipulate the citizenry, and to ensure that "that the office of President will never fall to the lot of any man who is not in an eminent degree endowed with the requisite qualifications."
Oh, the irony...The EC was meant to be un-democratic, to keep someone like Trump from getting power.

When electors are bound to their vote as they are today, the electoral college seems to exist in order to give a greater voice to more rural states, to keep them from being forgotten. But then the opposite occurs: winner-takes-all means that candidates have little incentive to campaign in "safe" states and the entire election hinges on just a few.
How were people communicating before FB? When you have that answer, you realize how futile is to depend your whole life & friends' + family's on FB.
On the other hand, I would have a hard time leaving the shop without buying something.

They might think you want to steal something and watch you closely. That makes it even more stressful
I'm in the Robin Williams category of depressives. I know how desperate and tiring it is fighting off those causeless bouts, and so I try to make life as enriching as I can for people around me.

It's my way of compensating for every relentless, hammering, baseless urge to die that I've survived alone over the years. It took a long time for me to get that people don't typically understand that it's more like hiding that you have cancer than not being able to cheer up. You can hide the symptoms of both, you don't ask for either of them, and they might both kill you, but somehow you're responsible when you get depression but not cancer.
Ok. Let's assume all that in light of your previous reply. Do you like your web apps to be secure? Or do you value the personal fulfillment of using C over that? A choice between those two is likely at the bottom of this. "Avoid C if security is priority" still stands with you making a different choice for different priorities.
Copy in one click when dragging a selection (very useful if you just selected words with ctrl+click).
Seriously. Bad conclusions. Facebook's news feed algorithms mean what users put into facebook has very little to do with what users get out of facebook. The author doesn't want to live in an "enlightened literati echo chamber", but is resigning himself to living in a algorithmic clickbate echo chamber.
Because nobody's even hinted that this has been done before. When someone's comments are edited, that person can see it[1], as can anyone who remembers the comment pre-edit. Add to that the fact that comments that are worth editing (beyond the rather unimportant "fuck u/spez" type of comment) are also presumably highly visible, it would be pretty hard for them to have a history of editing comments without someone having noticed before now.

[1] Modifying Reddit software to let them hide the edit from the comment author would be visible to anyone with source access, meaning it can't be done without the support of all of their developers, and so probably wasn't.
Ferrari makes 10,000 per year. What do they have to do with gasoline demand?
Hydrogen has a few problems:

the storage - you need very high pressure tanks to store them, and while this can be done, this is not cheap and easy

the inefficiency of creating and storing the hydrogen. When you compress a gas a lot of energy is lost by the heat produced by the compression.

So a hydrogen fuel cell vehicle will be 3x less efficient in electricity consumption than a battery electrical vehicle.
If 5 companies all invest R&D in developing smartphones that fulfill essentially the same purpose, is 4/5ths of the R&D money wasted? I'd say not -- competition decreases prices and increases quality. Even if it's "morally" redundant as compared to a world run by a benevolent supercomputer, it serves a concrete purpose with concrete benefits.

Similarly, if a tractor can prevent Joe from working a miserable low-skill job in a world where the supply of labor dramatically exceeds demand, it's a good investment for Joe. Even if it's "morally" just as redundant as the R&D dollars, it serves a concrete purpose with concrete benefits.

Of course, Joe would have to buy a great deal more than a tractor to realize this dream, not to mention that the fabled "tractor" which could actually free Joe from working harder than a minimum wage job doesn't exist yet, and probably bears little resemblance to the "car for farming" we've been talking about. Currently the cost of centralized production (the rent-seeking it enables) is small compared to the benefits. I don't think that's in question. I do think it's a function of manufacturing technology, though, and I don't think the scales are destined to forever tip the way they do now.
Works smoothly for me - i5 and 16 gigs of RAM.
OK - I'll bite. I haven't seen anyone mention medications here but personally I use propranolol.

Life. Changing.

For the first while I took it every day as prescribed for my ET. 20mg. And as I experienced the first pill (effects kick in about 40 minutes after), I had this realization "wait a minute, this is what it must feel like to be a normal person"! That light bulb in itself was incredible. Before that, I hadn't realized life could feel that good. I'd always wondered how people could do the things they could do ... and suddenly I didn't just realize but got to experience what it was like to be someone who DIDN'T have constant anxiety.

I cut back my dosage looking for minimum effective dose. Most days for me it's 0 (that's right, I don't take anymore on most days). My anxiety level has decreased because now I know -what it feels like not to be anxious-, plus, if I do feel anxious I have a solution at hand which lowers anxiety.

For a particularly stressful day I might take 5mg. (For me now a particularly stressful day means standing in front of a room of hundreds of people and presenting after 2 hours sleep.) At these infrequent low dosages, I don't experience any negative side-effects.

Worth sharing general personal details. I'm a 37 year old male in reasonably good health, I exercise vigorously twice a week and get a healthy amount of walking and biking in almost every day. I discovered propranolol by accident - it was prescribed for an essential tremor (ET), it was only after that I discovered the "off-label" anti-anxiety side-effects of beta blockers.

It's worth mentioning that I did experience negative side-effects when I was taking 20mg daily. If you can avoid taking it daily, that's going to be better for you in the long run.

* Reduced sex drive
* Life just seems more "flat" I don't laugh as much, get as giddy. My partner described me as seeming "disconnected".
* Cold limbs & numb tongue
That is a good insight...

I know that as I grow older (I am 41, working in tech my entire life) I lurk a lot more and more.

I am top mod of a subreddit of ~400K subscribers... I participate less and less as I get older - even if I have really strong opinions, I tend to just sigh and let the younger gen mods deal with it...

vocal minority and all that...

Someone will one day do a thesis on this phenom and put a name to it
Screw-pile lighthouse
Arctic ice melt could trigger uncontrollable climate change at global level
"Regulation is about preventing a mess. Litigation is about cleaning it up. I'd rather not have the mess to begin with."

That's exactly it. Although, I did propose possibility in this thread of defining regulations that aren't immediately applied but apply in court after harm is alleged. The reason being evaluation costs and time can be a big problem, esp for startups. This lets them simply follow guidelines with evidence produced during development & they only pay the cost if they screw up. The cost goes up with level of deviation and harm it caused.
Another random thing I just remembered: if you're doing work in the VMs that is heavy on network I/O, try turning GRO off. We saw a big performance increase by doing this: https://github.com/contiv/volplugin/blob/master/Vagrantfile#...
Given the fact that virtually every significant piece of C software has some sort of vulnerability in it, this comment is demonstrably false.
Unfortunately I think you'll find similar complaints in every scientific field. Often, results either aren't described well enough to be reproduced, they're too expensive or difficult to reproduce, or they rely on closed-source software and/or inadequately-documented hardware.
You certainly pay for that trust. Last week, I found a product that I bought on Amazon was available locally for 11% cheaper. Fast forward to today, I was about to buy something else on Amazon (prime item sold by 3rd party), and decided to check eBay. The manufacturer was selling the item direct on eBay for 30% less. Amazon does provide a lot of protection value to the buyer, but its previous value proposition (save by ordering online), doesn't seem to apply any longer.
Any examples of similar sites? It smashes a core of my laptop (i7 / 16GB) as well, but every site I've been to that looks like this (3D realtime) does the same thing, so I'm used to it.
Show HN: Get Any GitHub User's Email Address
Let's read parent comment again it says: "communicate with extended family and former friends"

Before Facebook and its ilk, part of the definition of "former friends" and "extended family" was that they are categorized as people you rarely communicate with, or not at all.

Before Facebook, you didn't need Facebook to ignore your former friend or to rarely talk to your second cousin on the other side of the continent. Today, you still don't need Facebook for this.
When I was a math student, we had two semesters of linear algebra. We only saw matrices at the end of the first semester; other than that it was all about linear mappings.

The thing is, most linear algebra classes that are taught to other sections (biology, CS, …) start directly with matrices and are mostly computational.
Here's an idea: a site for people with unusual genes, good or bad. They can describe why they're unusual, and in some cases get asked for more details or even for a DNA sample. All voluntary of course. Forums for people with similar conditions, questions about long term affects or attempted remedies. Feed the data to an AI. Maybe monetize with subscriptions to medical researchers.
When our first child was born we set up a telegram group to share photos and news. It encouraged both sides of our family to sign up. Now we all use telegram to communicate with each other rather than Facebook
All you need are moments when the water is liquid.

But you don't get those at such low atmospheric pressure. Mars atmospheric pressure is around 600pa. Below 611pa, the boiling point of water drops to the freezing point; you can have ice or steam, but not liquid water.
The general motivation for a p value is that you can model what your data should look like under the assumption that your model is correct, but you can't really say what your data should look like under the assumption that your model in incorrect. There are just too many ways that it could be incorrect.

As a concrete example, I might ask you for the distribution of the mean of N samples given that they come from the standard normal distribution (mean zero, variance 1). That's easy. The sample mean, which is itself a random variable, also is normally distributed with a mean of zero and a variance of 1/N. On the other hand, if I ask you about the mean, but the only info you have is that your data isn't from a standard normal, then it could be anything! There's no objective way to say how the sample mean is distributed, given that one crappy piece of info.

The most basic thing you can do then, is to assume that your model is true and see if your data is plausible. If I have a hypothesis that I'm flipping a fair coin and I get all heads on 10 flips, I'm going to start doubting my hypothesis. The probability of all heads or all tails with a fair coin is only 1/512=0.002. P values formalize that notion. We call the hypothesis we can model our "null hypothesis", and see if we get data that makes sense with it. If your observations are some of the most unlikely ones according to your null model, let's start doubting the model. That's it.

The benefit and trouble are both that we dodged the entire question of what an alternative to our model could be, and how the data looks under those alternatives. Ignoring that incredibly important question can give rise to a weird way of thinking, and opens the door to some conceptually mind bending mistakes, but it all comes from a simple interpretation of a p value. How unlikely is your data given your null hypothesis (given the model you're trying to test). Formally, this tends to be "what is the probability that some statistic is this unlikely or worse."

Does that make any sense?
I very much understand the bit that science is first and code second. I live by the very much same principle at work and we actually have a lot of (terrible) Fortran and C/C++ code around. And we're trying to adopt Python for large parts of of it.

But I'm not sure I follow your argument. I'm not talking about rewriting existing code. I'm talking about building new things. And they should be built in Python 3, because that's the standard that's meant to be used and supported in the future. Learning Py3 doesn't mean you can't maintain existing Python 2 code. It just means that whatever new thing you write is in a future proof setting.

(Btw. As much as people hate on Fortran, there's one thing that beats most other languages - take a 20 or 30 year old codebase and you're not unlikely to compile it and run it on a modern machine. We can't count on that with Python, but Py3 gives us a slightly better chance.)
Do you have a source on that? It doesn't seem right to me. Transportation is not the largest energy expense that goes into a product like a car; the largest energy expense is extracting and refining the raw materials into processed materials that are ready to be used for final production.

There's no way that the equivalent of one million driving miles' worth of pollution is emitted merely by moving around the pieces that then get turned into a car. Bulk surface/marine transport is extremely efficient.
Seriously worried lately about my reliance on my gmail account. So many accounts linked to it
As part of the target audience (I didn't previously understand matrix multiplication, but now I do), you are definitely wrong. This does help the target audience understand what is going on.

I think your core fallacy is that all people need to be taught in the same way, and that there is one correct way to teach people. The videos you link to may work for some people, but not for others. This explanation may work for some people, but not others. It turns out not everything works for all people.
Add TNW to the fake news list. They got it all wrong in their rush to publish.
Fine, except when you do actually get some symptoms for some serious medical problem, it gets important to get to an appropriate physician who usually, easily can do a much more accurate diagnosis.

E.g., as a child I had middle ear infections from congestion. So, recently I had some congestion and wondered if I was on the way to an ear infection. Okay, on a visit to a general practice physician for something else, I mentioned the ear issue,
and right away the physician (A) too my temperature and (B) looked into my ear. Fast diagnosis: I was fine.

And an appropriate physician has a huge list of much more powerful diagnostic tests.

Net: If you have some symptoms at the level of loss of sleep, lack of appetite, tired feeling, sore joint, etc., don't worry and, instead, go to an appropriate physician and get checked out.

If you still worry, then take notes with dates and continue monitoring and checking until get some resolution. The continuing notes may help you and/or the physician.