skysight-inc/HackerNews huggingface dataset:
You've got it backwards: in an elastic collision, kinetic energy is conserved by definition. Removing one conservation law makes the whole exercise physically meaningless because elastic collisions require as a given that kinetic energy will not be converted to other forms of energy. This premise guarantees that the momentum is treated as a quantity separate from the total energy of the system (which, as a reply to your first post pointed out, when expressed in relativistic units, includes not just the energy-mass equivalency but energy-momentum as well).

In reality, momentum in almost every collision will be converted into other forms of energy such as when intramolecular bonds are broken and materials are deformed in a car accident or when momentum is converted into mass in particle colliders. The elastic collision equations are only useful as a rough approximation precisely because they go out of their way to simplify the energy-momentum equivalence to conservation of kinetic energy just like Newtonian mechanics is a simpler but useful rough approximation of relativity at low energies.

You can't use elastic collisions to reason about energy-momentum equivalence because their most basic assumption is that there is no energy-momentum equivalence.
Ask HN: Where to start learning more about Parapsychology?
Hi, not really a technical question but given HN is the forum I spent most of my time on I'd like to start here.
I strongly believe people are connected in some ways we haven't proven/explained yet. For example you can think about someone and that someone will give you a call a minute later. That's just an example but recently this happened way more than normal in my life (or maybe I just paid more attention to it).

I know this may sound pretty obscure or even BS but as an engineer I'd like to prove this in a scientific way.
So far I've only read about telepathic experiences on reddit, and watched videos [2] such as the ones by Dean Radin [1], but all these only show that "paranormal communication" exists (I don't know the proper terms yet), but it doesn't explain it: why and how it happens.

As anyone seen or read ("serious") research on this topic (or related)? My intuition is to look into energies, signal transmissions or cognitive science in a different way. Any feedback appreciated.

[1] https://en.wikipedia.org/wiki/Dean_Radin

[2] https://www.youtube.com/watch?v=qw_O9Qiwqew
But they didn't upgrade the Mini, iMac, or Mac Pro. The Mac Pro has been the current model for at least two years. The iMac is a hack that uses two logical display panels to produce the 5K resolution, because there isn't enough bandwidth for a single one. The Mini is nearing the 3 generations old mark.
Miami Beach has run out of sand. Now what?
Could you expand a little bit on the concept of active-model-serialization not scaling? Are you referring to the performance issues, or another problem?
Why promulgate the absurd premise that doubling the RAM would cut the battery life in half?

As the article is at pains to say, 16 GB of RAM only consumes 1.49 A, while the CPU is 4.61A, and the display is a very big power hog.

I am not in a position to prove it, but I suspect that increasing the RAM from 16 to 32 GB would only cut the battery life by 10%; maybe 15% at the outside.
>Google is much better at this stuff.

Also worked at both companies. Google is not better. Google is a retirement home for engineers. Few creative things happen there (anymore--wasn't always true). If GCP is so star spangled awesome why is it still so far behind AWS? Why did AWS start literally 10 years before GCP?

Google reacts to competition while Amazon proactively responds to customers -- this, as always, is the difference that allows amazon to succeed.
Congrats on the text. As I put on my other comment above, I loved the insight about the internet era being a forest where you pick up knowledge anywhere, contrasting with the past where cultivating knowledge was hard and insufficient.

Another interest take is that this be an original piece of genuine internet art. I didn't bought all the aurea you put at it, but I do believe that it is something special and might lead the way to what is art in this century
I feel the same way with non-Apple gaming laptops. I have a concern about the laptop being on AC 100% of the time and what it does to the battery.
So.. New Zealand has 3.25m wide lanes typically. If you are interested in studies about how variables such as this and speed affect yearly fatality outcomes, NZ Transport may be a good place to start. With ACC and public health in general safety and reducing healthcare costs(read: traffic accidents) is a huge concern.

That being said, anyone driving from back to Auckland from the snow at 120kph+ knows that you don't drive slower due to the narrow lanes and crazy windy roads as much as you drive to the tolerances ;) Just like in US mountain areas you may be timid at first and get smoked by and annoy the locals, but you will soon learn to push the envelope.
*rite of passage (sorry for being that guy)
I don't think the pay gap will close. While surely you'll get raises in SV, you'll also get similar ratio raises in HFT.

The best way to see fit is if you can talk to others who have worked in both areas -- take an internship if you can.

From a friend who worked in both areas, I've been told the major difference is not work hours, but work intensity. He preferred finance in the end (and is still there), and thought finance has a higher intensity/focus in pace of work.
PEP 465 introduced the infix operator @: https://www.python.org/dev/peps/pep-0465/

Python 3.5 was the first version of python3 to implement the PEP: https://docs.python.org/3.5/whatsnew/3.5.html

If I am reading the release notes correctly, Python 3.5.0 was released last year (2015-09-13): https://www.python.org/downloads/release/python-350/

It's fair to say that this is a relatively new development.
Perhaps it's a good chance for Xcode/SourceKitService team to prioritize the fixes to the memory leakage issues, after they switch to the new MBP.
If programming in Ruby, I find that rubocop can enforce our style guide programmatically and impersonally, and it can even be set up with a git commit hook. You can't push ugly syntax! It's not perfect, but it's very good with very little effort.
Let's pay Damien Gregory for the Real Lockdown phone gas you president speech and Facebook Twitter Instagram YouTube Lockdown and Trump towers contact him for your shit back needs to be Paid for everything 509-945-4338
Can you help me focus on just one way to monetize my blog?
How do they measure the exhaust? With the EM field in the cavity I would imagine precisely measuring the photon emissions would be very difficult and the SNR might not be high enough to draw a conclusion. If the force is generated by new massive particles it would be headline news in experimental physics as the most efficient energy-mass converter ever made but if it's somehow generated by high energy photons, what are the chances they have adequate imaging to measure UV, X, and gamma rays, especially if the emissions have some sort of complex interference pattern? (although the theoretical maximum for force/power input is much lower with photon pressure than the results in this paper so it's still unlikely)
Yes, I know how the 4-dimensional momentum vector in relativity works.

I'm not aware of a physical view for which energy and momentum are the same for the purposes of something like the EmDrive. In particular, you cannot completely turn one into the other by a choice of coordinates, and you cannot mix them by any physical process. And I could be wrong, but I'm 99% sure you need both energy and momentum conservation to get 4-momentum conservation.

No matter your view, conserving the spacelike components of 4-momentum is not "a subset of the conservation of energy". And the truth/falsehood of this view has nothing to do with the "non quantum world". Relativity was an extension of classical electrodynamics before it was anything else.
I shrugged it off as a conspiracy theory for a while, but I'm pretty convinced he's MIA now. I don't quite believe he's been assassinated, but I think they could've struck a deal and extradited him secretly, and plan on now just not confirming or denying anything, so his story gets lost in the confusion/arguments/doubt.
You absolutely can but for the longest time you couldn't - not at least in a way that wouldn't break between versions. The wider issue here though is the attitude. If someone from the Unity team had explained why it couldn't be done for a technical reason I think many people would understand that. But to be told it was by design and that I should learn to live with it is exactly the kind of arrogance we could all live without in the Linux/FOSS community.
For my situation I work for a large CDN and we have over 15k servers deployed globally and software I write has to run on all of them. This means various OS and kernel versions. This means in a given day I can work on 20+ different containers. The more time I spend spinning up or down containers to save system resources the more angry I get. I also travel a lot for work, so connecting to a cloud based instance from a plane is not possible, plugging into a power outlet in a plane seat is.

For me the issue comes down to lack of choice. Previously lack of choice from Apple was not a concern because the choices I would make were inline with what they are offering. This is no longer the case.

For those that asked, I am replacing 10 years of using MBP's with a System76 laptop. I don't have it yet so I can't comment but I am excited for the change as have been growing more and more frustrated with Apple.
Not at all. I had lots of career talks with people that were much less focused on the immediate future. Things like figuring out whether an engineer was interested in moving towards architect, principle or management. I got one of my engineers a chance to try out working as a PM because we determined that he really enjoyed designing features more than coding. I helped one of our DevOps engineers realize that he really wanted to be doing product development and, unfortunately, we couldn't find him a role in our company so he ended up leaving. But even though we lost an engineer, I still had my manager's support to give that kind of guidance because we were doing right by the employee. And it also helped establish our reputation for caring about our employees development.

There's a lot more to career talks than just the immediate next step. There's also figuring out whether your current career trajectory is the one you really want. Performance review time is an excellent time to discuss taking the immediate next step, but it's a terrible time for the broader perspective meeting. That should be separate, but should still definitely happen.
It's interesting that ivm's repoiste wasn't even hard.

But also completely outside your control is the wrong bar. You should triage and fix the things that are most fixable. And even then, there is no point wallowing in angst when fate stymies your efforts.
The Trade Federation, duh.
Great article. I think that the advice on cordless tools is a bit off, maybe the article is a bit old. Most of the tools sold today are cordless. Drills especially can be used for many things, and you can use them more than once in six months.
Blink doesn't get any upstream changes AFAIK. In fact it's moving much faster than WebKit and got custom elements back in 2014 with version 33.

http://caniuse.com/#search=custom%20elements
They may be more efficient but when you need to run a dozen different containers simultaneously and you want each one to use a modest amount of memory, 16GB falls short. The issue is not efficient vs. non-efficient. It is scale. If I was writing a single web app on two containers sure 16GB would be fine. I am not though, and the scope of what I work on requires more memory.
Isn't this essentially google news?
>He made the situation far worse. Under Obama we have increased police militarization, expansion of the surveillance state, unchecked abuse at CIA black sites, consolidation of executive power, new undeclared wars, and more.

It appears that the majority of Americans are very focused on the election drama and inconsequential distractions while the elite in this country can do anything they want, raping children and getting away with it. You think that's an exaggeration, don't you?

http://www.independent.co.uk/news/world/americas/who-is-jeff...

One of Bill Clinton's best friends with connections to Bitish Royalty was convicted for raping children. Many said he should have been sent away for most of his life. Served 13 months, special cell, nights only, allowed to leave from 7am - 11pm. Officers in charge of investigation resigned. Imagine what people are not getting caught for. This is too insane to be true.
IEA: Natural gas, renewables poised to meet global demand by 2040
Well he was democratically elected according to the rules. If the rules had been different, he might have also have got the majority of voters. We will never know.
Cloud render farms have been a thing in CGI for nearly a decade now. It can - sometimes - be cheaper to buy time than to buy hardware.

But there are a lot of disadvantages. The process only really works for final renders. All the creative work needs to be fast and local, but thumbnail renders don't always give you enough detail to make good decisions.

It doesn't work for audio, because audio isn't great with low-quality previews and often needs hands-on changes.

It doesn't work for many kinds of ML - not unless the render machine has the latest graphics cards.

It doesn't work for renders with huge asset libraries spread around a LAN.

And so on. Basically there is a list of use cases, but it's not even half of all possible use cases.

Meanwhile dual-Xeon servers have really started to kick ass. These are workstation grade machines with high four and low five figure prices. You can have up to 48 independent cores on a dual-CPU board, which is excellent for video rendering.

Or you can get a blade rack. Depending the project, they can be better value than an off-prem cloud account. (Sometimes).

Apple has turned its back on this space. I don't entirely understand why. Xserve had real potential, but they decided to go dumbed-down consumer instead.
> This is part of the problem with American politics. It degrades discussion into "Is not!"/"Is too!" back-and-forth, which is useless.

That's funny, because I was just thinking the problem was the tendency for people to look at an opinion and immediately apply partisan politics to it. Since you decided to deflect the question instead of answer it, I'll just say this: it's really disappointing to me that there's apparently no room to not agree with any major political party.

I'm watching the absolute mockery that is being made of the front office of our government right now, and I'm extremely disturbed, embarrassed, and pessimistic. The media didn't make Steve Bannon the leader of the alt-right movement, Steve Bannon did[1]. I know for sure that I do not agree with any of the elements of the alt right movement that I've observed (either self-proclaimed or through the media).

[1] https://en.wikipedia.org/wiki/Alt-right#Commentary
For corporate accounts, I want the various cloud services to use systems that have been around since forever and a day. I want to be able to use systems like Kerberos to give Google Apps a service ticket so I can manage passwords on my server, with google only getting what user has successfully logged in. The cloud has set us backwards in single sign on, since everyone wants to be the gatekeeper.
These early personal computers weren't much more than toys. You could play pong or simple shooting games, maybe do some word processing. And these toys were marketed almost entirely to men and boys.

It's not expressed explicitly, but this is clearly implying that the reason men and boys were buying and using computers more than women and girls was because of the marketing.

Let me suggest an alternative explanation: Computers were marketed to men and boys because that was the part of the population that was most interested in the things that computers can do. If you want to sell something, your best prospects are going to be the people that already want that kind of thing.
I'm guessing the easiest way is to just shell out to the docker run command.
I'm on AC like 90% of the time, and afer a year much to my surprise my laptop battery has hugely degraded performance.

I would've thought when you're on AC, the power can completely circumvent the battery and put no wear on it. I remember in the age of replaceable laptop batteries, I could replace the battery while connected to AC (or run without a battery) no problems
Riseup.net's Warrant Canary has not been renewed – they are likely compromised
Canary should have been updated four days ago:
https://riseup.net/en/canary

Suspicious Tweet last from them:

"listen to the hummingbird, whose wings you cannot see, listen to the hummingbird, don't listen to me."

https://twitter.com/search?f=tweets&vertical=default&q=riseupnet&src=typd
Not defending the MBP, but at least they have SSDs that can push 3.1GB/s [1] which is much better than most devices, esp. spinning rust. What Apple has done on the iPhones with their SSD's bus (moving off eMMC to a much faster bus) is also a big performance boosting move, really helps to keep RAM costs down now with the ongoing RAM shortage.

[1] - https://9to5mac.com/2016/11/01/2016-macbook-pro-ssd/
The value of 900B is wrong, apparently. Value of oil in the ground != value of oil in a barrel.

http://www.forbes.com/sites/timworstall/2016/11/18/the-midla...

Plus, we're at a stage where we really need to leave a lot of oil in the ground:

https://www.theguardian.com/environment/2015/jan/07/much-wor...
These things always amaze me, $900B which, if they extracted it all at once would deflate the price of oil to less than $10 a barrel and make everyone go broke.

For reference the US consumed 7 billion barrels in 2015[1] so this represents basically nearly 3 years of consumption by the US with no imports at all. And world consumption has been nearly flat for a while.

[1] https://www.eia.gov/tools/faqs/faq.cfm?id=33&t=6
>It's faster, cheaper, more configurable. The documentation is actually comprehensible.

The docs have more 404s than trumps twitter account... who payed/paid you to write this?
So, we're still living in the 'plain text' part of our universe. Everything open and visible to the ones who've moved to the encrypted dark matter. ;)
The new quantum reality
Remember all the threads recently about fake news?

"The Midland Basin Wolfcamp Shale Is Not Worth $900 Billion - That's Not How Resource Economics Works"

http://www.forbes.com/sites/timworstall/2016/11/18/the-midla...
It's like the thought experiment of replacing seat belts with a spike sticking out of the steering wheel.

That will guarantee that car accidents and deaths drop dramatically.
We are parasitic electrical energy observing everything as we hitch a ride in the brains of these meat creatures.
Video of talk: https://youtu.be/XY-Ktqhlloc
A friend of mine is from Carbondale, Illinois - Fuller's home town. From what I understand it's a deadbeat midwestern hellhole now. He once told me a story about breaking into Buckminster Fuller's now-abandoned dome house and smoking weed in there.

tl;dr: the dream is over
> Yes and more specifically Washington DC, the home of the regulators, voted 92% for Hillary.

Washington D.C. may be where regulators work (though some of that is outside the District), but regulators are a very small share of the population. The vote in D.C. has little to do with regulators (it has a lot more to do with race, but even saying it was solely about that would be oversimplifying.)
Web scraping for profit?
What are the legal implications of using web scraped data to create a commercial application? What are suggested best practices?
I'm well aware of the Clinton's (and Trump's) connections to Epstein. I am very curious how the newer revelations of their connections to Laura Silsby, and of Podesta's connections to people like Dennis Hastert, will turn out. I don't want to form any strong conclusions yet, because some of the recent "pizzagate" claims are relying on thin evidence, but nothing would shock me anymore.

Here's another elite getting special treatment after raping his three year old daughter:

http://edition.cnn.com/2014/04/02/justice/delaware-du-pont-r...

Here's Blackwater founder Erik Prince (not necessarily someone I trust in the slightest) making some enormous claims about the investigation into Anthony Weiner's laptop:

http://www.breitbart.com/radio/2016/11/04/erik-prince-nypd-r...

I never thought I'd see the day where I'm citing Breitbart and Erik Prince, but reality is stranger than fiction these days and I'm not sure what the hell to believe anymore.
Reducing the size of your front door CAN indeed make it harder for thieves to steal your couch. For one thing, it will not stop them from entering, but it can make it difficult enough for them to get the couch out that they select a different target
This is why big time negative results that lead to closing a big path that may have wasted humanity huge research time should also get rewards and grants.

Now if you only do negative research you cannot publish and you if you don;t publish you die.
Well, in midtown Manhattan it wouldn't stand out that will. I'm equally skeptical of its durability against a close hit.

Although in any case, I think Cold War ICBM accuracy (CEPs on the order of half a mile to several miles, depending on period) would be more of an issue than target identification.
Also it provides security if we burn up everyone else's oil but keep large reserves for ourselves.
> Be the sheep Apple meant for you to be.

Sheeps do like apples
Two big problems:

1. Details on submarine nuclear reactors are classified, but five minutes' Googling shows that a reasonable guess for their total mass (including shielding) is 1,000 tons. Meanwhile, the entire payload to LEO of the largest rocket ever successfully launched, the Saturn V, is only 155 tons -- and that's for the entire top stage.

2. Submarine nuclear reactors use water for cooling. Water that is not available in space. Cooling would be a huge problem.

So, existing submarine designs are not practical. You'd need to design something from the ground up that is much lighter, and the cooling system would be entirely different and likely more massive, since you don't have all of that free water available to dump heat into. Instead you're talking massive radiators.
Actually will narrowing lanes increase driver stress?

Presumably, the increased stress is why they drive slower in the first place, which should then have a canceling effect lowering their stress back to the original level.
PROJECT XANADU: The Original Hypertext Project
Bit late replying, but another couple of points:

If a class of resource is cheap and abundant, evil dictators/1%ers don't really have much motivation to prevent people accessing those things, unless they feel it somehow undermines their control.

I also think there would be less motivation to become a dictator if you didn't have to fight everyone else for limited resources.

It would also be much harder for the warlord type to motivate others around them to do their bidding if those others are well fed/clothed/housed.
HackerNews needs to take steps to prevent fake news from skewing people's perspectives /s

Edit: I really was being sarcastic. This is the current response towards Facebook and I was trying to demonstrate how silly it is.
The US Code is law, not regulation, and so is completely irrelevant here. What you want to cite is the Code of Federal Regulations, which is much larger than the U.S. Code.

Of course you provide no reason at all except an unsupported assumption to believe that the size of the completely wrong thing that you cite is an indicator of unnecessary complexity, and the fact that you cite the completely wrong thing is a pretty good sign that you have zero knowledge of the domain from which to form a judgement.