skysight-inc/HackerNews huggingface dataset:
Superfluidity is briefly mentioned in the article, but it's a quantum effect that's visible in very large systems.

A system exhibits zero viscosity when its particles condense into a single quantum mechanical state. Superconductivity is an instance of this, where electrons pair up and flow without resistance.

Buckets of liquid helium show superfluidity. [1]

Labs cool blobs of alkali gas to superfluidity. [2]

Entire cores of neutron stars are superfluid. [3]

There's even a theory of quantum gravity where physical vacuum is a superfluid. [4]

[1] https://www.youtube.com/watch?v=2Z6UJbwxBZI

[2] https://www.youtube.com/watch?v=1RpLOKqTcSk

[3] http://arxiv.org/abs/1012.0045

[4] https://en.wikipedia.org/wiki/Superfluid_vacuum_theory
>The behaviors that we want in our markets, price discovery, liquidity, easy risk management

None of which we get from HFT.

HFT cannibalizes the research done by value investors (oh, but it's not legally front running if they're not your customer!), rendering that a market for lemons, so there goes price discovery.

HFT floods the market with more liquidity than it needs during normal periods (there is no benefit to you being able to trade at split second intervals. nada. none) and then extracts it all during periods of market distress when liquidity would acually be useful.

And risk management? Please. They're only managing their own risks.
Haha! :) Clever point but grocery stores provide utility. HFT is more like if you set out to go buy a whole lot of peppers (because you have a pepper index fund :) and some guy saw you doing this at the first store... knew that was your plan, called all around town placing orders to buy all the other peppers in town and offered to sell them to you for a premium, but cancelled those orders if you declined.
> We're constantly getting healthier, living longer lives

LOL, really ? There are more and more obese people in the US, does that count as getting healthier ? What are your metrics exactly ?

As for living longer lives, that's already clearly proven most of the life expectancy gains happened since we reduced infant mortality to minimum levels, raising therefore lifetime for all individuals on average.
Please please please keep the phrase 'zero sum' out of this. It'll only encourage pointless arguing about whether or not something is zero sum.

It does not matter if trading is/isn't zero sum. Or perhaps you can explain why it matters?
I prefer if the author pointed out to course in edx on Data Science and Machine learning.
Python is slowly becoming the gold standard for Machine and Deep Learning. Since Python has been very strong in scientific and artificial intelligence community there is a large corpus of knowledge.
Given how easy it is to go from experiment to a live web service using python you don't need to fiddle with hundreds of xml configuration and infrastructure to just get it to work. Also with Anaconda and jupyter you can share your knowledge so easy.
Julia is catching up which is good, but its still very far from Python.
The "new" part of this news, which not many have responded to here, is the notion of an HFT tax. The arguments on either side of HFT (liquidity/spread/etc. vs. cost/unfairness/etc.) have been largely unchanged for the last few years. There simply isn't enough data made public to declare a victor.

As far as the tax: personally I'm very in favor of slowing down trading... unfortunately, what's being proposed introduces as much structural game theory as it eliminates. What's the dominant strategy for a trader faced with a rule like "any trades resting for less than 300 micros get taxed"? To be as fast as possible without triggering the tax; staying just above the threshold.

All that economic waste on low-latency tech will just be redirected to low-jitter tech. Those who can reliably land an order within +1 microsecond of the tax line will outperform those who only have an accuracy of +10.

I'd like to see more exchanges experimenting with things like random variance in speed bump size, frequent batch auctions, etc.
Quantifying and Visualizing the Reddit Hivemind
The Key to the Great Mystery of LIfe
Scott Fischer's wife on the the media, Everest
The population is largely children, and nearly 100% of the population were children when they adapted to most of their culture, (specifically the kinds of ideas you are rejecting here.)

You don't think "freedom is the right to be wrong" wasn't something you were taught as a child by adults?
Recorded Video Messages: Why It’s the Ideal Communication
yes in US$ 12 vs 40+ dollar for single user
Common misconception. It is not related to space-filling curves. Space-filling curves are for linearizing points but have limited utility for interval data types. Technically though, all binary space decompositions can be described in terms of space-filling curves. However, for most kinds of space decomposition it is a mistake to use something describable on a fixed curve (e.g. Hilbert); the curve definitions are dynamically constructed and expressed in terms of a simple algebra. In extremely adaptive representations that squeeze as much information theoretic locality as possible out of the data model, those expressions can be pretty long but from a software standpoint you only need to reason about a local fragment of the expression at any point in the processing.

In SpaceCurve, all points are represented as hyper-rectangles. Literally everything is a hyper-rectangle. It is the most unusual part of the whole thing. There is no linearization on a space-filling curve.
Its a pivotal issue. Zero sum means no value is being added by the process - its entropic. Such processes can be dispensed with, to the benefit of all.
A curated debate on JavaScript frameworks
Just wait until the inevitable data breach and there gone
David Heinemeier Hansson on Rewriting Basecamp Code, Twice
I'm not saying that protections or subsidies are two exclusive options. I'm saying that one or the other is a necessary condition for many kinds of hard R&D. I agree that in practice we have a mix of both.
Seconded, a really amazing UI and UX with security at the forefront. Not to mention the apps are updated often to take advantage of the latest iOS and OS X features (they support other platforms but I don't use those apps).
I was a longtime LastPass user and switched to 1Password about 6 months ago and have been really impressed by it.
I'm sure they'd rather not be paying for microwave links, but they have to because everyone else is doing it. End result: everyone wastes lots of money to get no additional benefit.
+1 for 1password. Best password management software out there.
Some of these tools (1Password in particular) seem geared toward individual password management. And LastPass wasn't exactly user-friendly. What are you using for group/team password management?
I've been using an excel workbook that is stored in an encrypted image as my ways to manage passwords.

How are these services that people mention in the comments, better at doing the same?

Is there a better way someone has come up with to manage passwords where you don't have to rely on these services?
We were in a similar situation a few months ago when Mitro announced that they were shutting down their service.

Mitro's owner being really nice, they open-sourced the browser extensions, server and mobile applications so we used them to run our own: https://passopolis.com/

We plan to keep the code open-source and we're working hard at the moment to introduce the organisation feature useful for start-ups. We plan to make the organisation feature a premium service so we can justify running and improving Passopolis for as long as it stays useful.
Creating an emulsion, which is exactly what homogenization is, does not do anything to the molecules. It reduces the size of the clumps of molecules, which simply allows it to exist in a consistent suspension. It has no effects whatsoever on how those compounds behave in the digestive tract.
I agree. In my grandfather's case, he was keeping this all a secret because he wanted to surprise his family with financial help from his "windfall." Something I think he always wished he could do, but never had the money to do.
> "They however do control access to the account. This means there's a point where they get all sorts of data on me, and while I personally don't mind, I must admit I felt a bit safer when I thought it was a smaller, purpose-built company managing things."

I've never really understood the appeal of account-based password managers. It was a startup and it needed a business model, sure, so from the company's perspective it makes sense. But from a customer's perspective you're accepting a new type of risk that you don't have to worry about if you use a glorified encrypted list (e.g. KeePass) to manage passwords. The payoff is convenience, but personally no amount of convenience is enough to make me comfortable with storing all of my encrypted passwords on a single server somewhere and hoping that there are no exploitable security vulnerabilities (or malicious insiders who might seek to profit from finding or introducing them). Having an offline password manager that never uploads data to a server provides defense in depth, though it's less convenient.
A Shocking Way to Fix the Brain
We could build this with Twilio.
I find humans to be pretty funny. Modern day humans no longer trust the instincts they have developed over millions of years and instead put their faith in shitty science and corporate marketing. They no longer trust themselves to know how long to stay in the sun, how many steps to take, or what kind of foods to eat.
> None of which we get from HFT.

No but we do get it from market makers. HFT has led to a dramatic decrease in the price of market making. Unless your claim is that market making is not something that should be allowed?

> And risk management? Please. They're only managing their own risks.

My point about risk management was about the aggregate benefits of the markets, not about HFT providing someone risk management. If you have some risk that you want to sell, there will be a buyer for it because of the aggregate sum total of all the zero sum transactions available in the markets.
Much more often than you might think. Every time we make a deposit (likely monthly/bi/weekly) that money needs to be deployed (aka stock purchased). If we are part of a big fund that fund may need to buy stocks in huge chunks and when the HFT sniffs out what they are buying they will raise the price.
You're not "combining" standards though. As other comments pointed out, this is not a subset of html. It's a separate spec, based on a subset of html, which is different enough that it's not quite compatible. For example, what's with the amp-prefixed tags? Why amp-img instead of img with data-amp- attributes?

You also didn't address my first point: If you're building this for people who don't make the effort right now, why would they suddenly make a seemingly bigger effort to support something they haven't even heard of before today?
Usually it's done on your behalf by institutional investors. The costs will be passed on to you in the form of less money once you retire.
Maybe that's taking it too far? Clump size may indeed affect absorption, change the time it takes to travel down the intestine, or even change the speed of chemical reaction with increased surface area.
You're missing the point, It doesn't mean that at all. Plenty of things could be dispensed with for the benefit of all, zero-sum or not. ZS is not a magic flag that shows something is worthless.
DC'S Fastest-Growing Companies
> The most evident and dangerous venue for such engineering is the public schools, in which the government subjects our children to every sort of social experiment, and what have we to show for it?

First two to spring to mind: A dramatic drop in violent crime since the 1970s because the "self-appointed masterminds" restricted lead. A dramatic drop in road deaths because the "self-appointed masterminds" required seatbelts, airbags, and crash standards.
It's flawed analogies either way, but a better analogy would be you are a store owner with many branches. The worlds largest pepper buyer walks into your store and buys your entire supply. You call your other branches and tell them to change the price on your own inventory because you are assuming that the worlds largest pepper buyer doesnt need just one stores worth of peppers.
The most memory I've seen on a machine with current hardware and constant latency is 512 kilobytes, like in some of the Atmel ARM SAM D1 chips. Above that, you start getting into off-chip buses‚ which generally have substantially higher latency, even before you get to the extra latencies added by DRAM chips.
Even on Android 1Password feels like a first class citizen (I think some third party app integration is lacking but i'm used to going back and forth to copy passwords). I am very happy with what it provides.
Anyone know what to make of the (black) streak feature that is only present in the x-ray?
Scan, clean website in seconds, is the anti-malware network for websites
Are there open source "clients" that can access the 1Password data I store locally?
...For a text document.
$12 a year vs. a one-time purchase. Just for clarification purposes.
> Look at the places with the worst outcomes and you will find the most government involvement.

Of course. That doesn't mean they are the problem. It's entirely plausible they are involved because there's a problem. In a system with honey, bees and bears, just because you often see bears involved with honey doesn't mean they are responsible for its creation.
A lot of the bright spots in the gamma ray image are supernova remnants (pulsars and blazars). You can sometimes see the gas from the explosion emitting in H-alpha around the pulsars (like near vela). Pretty cool.
Those instincts were evolved to get you to reproduce and live long enough for your offspring to be self-sufficient. The world has changed enormously since the industrial revolution and there's hardly been enough time for new instincts to evolve to account for modern society.
Or you could just get rid of the sub-penny rule and let HFT compete on price.
That already happened: https://blog.lastpass.com/2015/06/lastpass-security-notice.h...
Humans have been proved to be pretty bad at deciding things. We've used voodoo, superstition, trust in authority for thousands of years. I welcome some order in the process, in the form of science.
That actually seems to be quite the improvement. The vault actually seems useful now and doesn't look like a poorly built app from 2002. Thanks for sharing
It seems a weird sort of naturalism fallacy to assume that mixing milk by hand is optimal. I'd be very skeptical about health benefits, but I'm open to the notion that it tastes different. Have you done a side by side comparison (do some brands offer both?)
This is what I get if I block `ampproject.org` (which -- given its purpose -- is meant to become ubiquitous): A blank page.[1]

In reality, the speed gain (which is the advertised benefit of AMP) is just a matter of avoiding to pull all the optional 3rd parties.

For example, a non-AMP random article from the same site[2], the page loads quite fast when I block all 3rd-party scripts/frames, except those from `vox-cdn.com` and `voxmedia.com`. The page renders fine -- with the virtuous "side effect" that 18 more 3rd-party are not logging network requests from my IP in their server logs (in this specific case).[3]

[1] https://cloud.githubusercontent.com/assets/585534/10397383/6...

[2] http://www.theverge.com/2015/10/9/9486505/california-calecpa...

[3] The total number of 3rd-party in this specific case climb to at least 48 without a blocker.
I get the feeling they could simply interchange income maps for obesity maps and no one would know which is which.
Disagree; it is exactly that flag. Other things may be even worse than zero, of course.
Remix culture
You are right. I shouldn't have used that term when responding to the original poster.
RSS never was an open standard like you would expect from a real standards organisation, e.g. IETF or W3C.

Because of dominance posturing and fights between the multiple parties involved in the development of RSS, it is a train wreck of ad-hoccery and incompatibilities, and serves as a prime example of how not to do things. https://web.archive.org/web/2004/http://diveintomark.org/arc...

> Remember who actually killed it?

Atom.
If you pay $100 extra once in your life for the gold iPhone, then Apple has probably cannibalized more of your retirement fund than HFT.

Ballpark esitmate: drop $20k/year into retirement (1 lot of SPY/year) x 1 penny/share being robbed from you x 50 year working career, you've lost $50 to the evil HFTs.
>No but we do get it from market makers. HFT has led to a dramatic decrease in the price of market making. Unless your claim is that market making is not something that should be allowed?

No, my claim is that market making was made significantly cheaper by electronic trading in the 90s-00s but HFT had very little effect on that.

HFTs do a lot of market making, make almost no profit from it and mainly use it as cover for their more nefarious activities.

>My point about risk management was about the aggregate benefits of the markets, not about HFT providing someone risk management

Great. So even you agree that if we banned HFT we'd be no worse off.
This is a pretty dumb article.

Note there are other kinds of "nuclear engines", including one where you use a nuclear reactor to power an ion drive.
So often these maps turn out to be population-density heatmaps. Do we know that is not the case here?

Ah, thanks nrjames, that page says its percent obesity within each grid cell. So not a population heatmap.
Mobile browsers can figure out scroll on their own, why did they do this? I wonder why websites override default browser page navigation that works just fine with broken estimations of the same functionality?
I don't understand the Bekenstein bound well enough to comment very intelligently, but isn't that a bound on the information content of your CPU rather than its information throughput or latency?
An odd title; this patent was already struck down by the Supreme Court of the USA in 2013[0]. Now it's no longer valid in Australia. The cost of tests for BRCA1/2 mutations is dropping dramatically; were the medical apparatus of the USA not so drastically broken, the cost to consumers of this test would today cost the consumer around $50 US. This is thanks largely to the ACLU and some geneticists in NYC, including Harry Ostrer.

[0]: https://en.wikipedia.org/wiki/Myriad_Genetics#Association_fo...
> 1. People don't have a right to examine the activities of their government

How do you propose to keep things secret while permitting any citizen to examine them? Do you deny that some things need to be secret, or do you deny that some citizens would reveal things which should remain secret? Or do you have a way to keep things secret and publicise them at the same time?

> 2. People don't have a right to speak freely about what has been made public

No, people aren't right to do so. There's a difference: I have a right to pour egg whites and sand in my hair, but I'm a lunatic if I do.

> 3. People must trust auditors who work in secret

Again, what is your proposal which keeps things secret and yet public?

> 4. Humble yourself so you can never declare right from wrong

No, have a sense of humility. You and I are two people out of about 350 million. I may believe something is wrong, and I could be right; but if everyone says I'm not…I should at least consider the possibility. Likewise, one must recognise that neither the law nor the Constitution mandate all good things, or forbid all bad things: plenty of things I dislike I perfectly constitutional, and plenty of things I like are not mandatory. I don't get a veto over the rest of the nation; neither do you.
I think non-homogenized milk has a better mouth feel.
Well the masterminds are still in the red, compared to the deaths from obesity (and drastic cut in quality of life).
How We Handle Do Not Track Requests on Medium
> The capability of these generalized parallel ad hoc join algorithms where demonstrated on a supercomputer circa 2009.

Is this external work? If so, do you have any pointers to it?
Continuing from the perspective of buying a car:

If I put a sell order on the market at 12:00 the only impact is the sales price. If it executes at 1PM or 2PM it makes zero difference to me as I can only access money at the end of the day. So, I only gain liquidity if I would have been otherwise unable to sell by the end of the day. Therefore, I don't gain liquidity from HFT.
18F launches cloud.gov
Socialism never took root in America because the poor see themselves not as an exploited proletariat, but as temporarily embarrassed millionaires. - John Steinbeck (disputed)

Lots of otherwise reasonable people are willing to delude themselves for a shot at a windfall.
We have a whole subthread here about how insurance companies will refuse to pay when push comes to shove; I don't really believe in the peace of mind anymore.

What I'm looking for is the ELI5 for what insurance really is about (especially from the POV of insurers) given that, if I understand correctly, 'chimeracoder is disputing the insurance-as-everyone-pooling-money model.
> How on earth do "normal" people fall for this?

How do people fall for phishing scams or running malware from an email attachment? The answer to that question is the same to yours. I think it's a combination of lack of public education about scams and the belief that the email or phone call is legit.

And I think it's really interesting. A lot of people talk about "infected" PDFs - I've personally never seen that but what I usually see are:

invoice.pdf.exe

invoice.pdf.js

Most sane email providers should scrub that attachment (or bounce it) - however email providers such as AOL don't. Thanks AOL.

I run my own email service and I get emails like these all the time [1]. And if you are someone who takes the tollway daily it could be a scary email that you open right away.

I do want to mention Amazon's practices. So it appears their system glitches and spews out this email to random people [2]. This email is plain text and, at least the last time I logged into my account, has no indication that they want this information (it does say that "functionality is limited" but those instructions that say to login to the site and submit your information are incorrect which immediately makes me think it's a scam - it even has typos that you would find on a scam email!). It's even been reported that customer service says that it is a scam. However, it is real and an easy template to scam people out of their identity. For less than the cost of a cup of coffee at starbucks you can get an 800 number from a VOIP provider with faxing ability. I've contacted Amazon about it....and they just sent me the same email back. Thanks Amazon.
(You don't know how tempted I am to write a cron job that faxes a copy of my drivers license to them every hour)

[1] http://i.imgur.com/GH46n92.png

[2] https://gist.github.com/nadams810/cb1a85514484c2659f1b
I understand how this works in terms of mockups and how useful it can be - where it gets confusing is in tools like Origami which uses Facebook frameworks:

>Origami can now export code for the parts of your prototypes you used to have to tediously spec to engineers. Now with the click of a button, you can deliver your animation specs as code to your engineers that they can copy-and-paste into the project.

> This uses our _free, open source_ animation frameworks to deliver the exact same feel across all platforms. Take a look at some sample code this can generate and learn more about it.

Which runs in direct contrast with the above License:

> The Facebook Design Resources may not be embedded in any software programs or other products without express written permission.

Unless Origami isn't considered a "Facebook Design Resource" (and is a different type of resource, correct me if I'm wrong here), this seems like lawsuit bait.
Can't read the article without signing in..