skysight-inc/HackerNews huggingface dataset:
> can we create two images on a computer monitor that appear the same to a person with normal color vision yet appear different to a colorblind person?

It surely depends on the type of colorblindness, there are many [1].

[1] http://en.wikipedia.org/wiki/Color_blindness

If you're monochromate or dichromate, I doubt that this is possible. Monochromates or dichromates are simply missing one or two color components out of three.

If you have anomalous trichromacy, you can by creating a monitor with pixels of different colors.

In any case, I don't see how it is possible to identify a tetrachromate with a trichromate (RGB) monitor.
I tried to increase the contrast and change the hue of the color test to understand what was different between the apparently similar colors but I wasn't able to find any difference.
Hell no. Legalize nothing. Allow research but nothing more.

My wife had to quit her job as a psychiatric nurse because of the violence from drug addicts. She was punched in the face five times by someone who wanted his methadone.

Go figure where we'll be if it gets legalized.

I'm in the UK as well. The last thing we need is more health expenditure on this.

Edit: 1 downvote from the pro-drugs crowd.

Edit: seeing as HN has restricted by posting rate...

He wasn't in the hospital because he needed methadone. He was in the hospital because his drug problem had lead to him passing out in the street, flies had laid eggs in his legs and maggots were crawling out of them and he was going to die from infection. My wife was trying to help him. The only reason that he wanted methadone is because they won't give him the real stuff in the hospital, which he could get his hands on without any trouble outside the doors so availability is not a problem.

Another edit: work in a psych ward. 95% of people in there are violent addicts of various substances. This is not a coincidence.
The thing is that health expenditure and legalisation are proportionally tied.

Thou who bites off the latter, increases the former in psychiatric and general healthcare.

And that's not fair on everyone else. So perhaps you should forfeit your right to free healthcare when you make that choice?

(I speak with respect to the NHS in the UK).

For ref, I'm allergic to penicillin as well. Fortunately because we have research budgets, we have other antibiotics. Perhaps expenditure on drug related problems (crime, psych, healthcare) should be diverted into that?
QP framework. Its bloody brilliant.
Why Windows UI Matters: Part 1
No...just the fact that these happenings always take place South of Border...and we are in the same timezone supposedly I'm living in "Canada's Silicon Valley"

Really wish Y-combinator would make presence here in Vancouver, BC
Monitoring and education can be, and for the most part is, already allowed.
what about the "night vision" painting. if it's pitch black and someone has the ability to see a vase, and then remembers the vase and paints the vase green in another room brightly lit...

well, they wouldn't paint a pitch black canvas and claim they can see a vase in that painting.

if el greco had some kind of condition that made him see elongated figures at thirty feet away, would a small normally proportioned figure drawing two feet away really look elongated also?
"Heroin might have helped smokers quit".
As far as I can see, you are helping my point (perhaps that is what you intended): suppose that you saw those subtle transitions in, say, the wood of a kitchen table, and decided to make a printing that portrayed them. Suppose, as well, that your art colleagues have less color discrimination than you, and didn't see those transitions in wood color. They would also fails to see them in your printed portrait of them.

So, you would have two entities, wood and print, which would match each other in color both for you and your colleagues. It's just that the colors thus matched would be beautiful and subtle for you, boring for them.
Pre-processing macros can reduce repetition, but they are certainly a hack: They are not type-safe. They are not even syntactically safe. A missing brace in one can cause untoward damage down the chain. And getting it right is especially important in crypto-code!
If drug use affects someone else, then it should not be allowed. It invariable always affects someone else either through taking a slice of healthcare or psychiatric side effects.

The whole mantra of "do unto others..." (the golden rule) goes out of the window the moment you start taking drugs.

We all have a social responsibility if we like it or not and taking drugs is not responsible in any way.

(neither is drinking, smoking etc but that's another debate)
Using JPEG for a color test doesn't seem well thought out. Using GIMP (Colors, Map, Rotate Colors), one can make a letter appear in the center circle. I guess if the other circles had any letters in them, the compression ruined it.
A Python/MongoDB framework to handle very large nmap scans
That's really cool Nicolas. Thanks for sharing
Why there are no Short Lambdas in Haxe
The male equivalent is "Anomalous trichromacy" http://en.wikipedia.org/wiki/Color_blindness#Anomalous_trich.... You have one of the color receptors tuned to a slightly different frequency, so you see the word in a different way. (Which way is the correct way?) This condition is easy to spot with the standard Ishihara color test, so it's easy to measure the % of the population in these cases.

--- Green

The most common case of male anomalous trichromacy is the "wrong/unusual" green receptor case, so the most common case of woman tetracromat is one that has 2 copies of the usual blue receptor, 2 copies of the usual red receptor and 1 copy of the usual green receptor 1 copy of the unusual green receptor. This is the case discussed in the article.

To reduce the text size I'll denote this kind of tetracromat with BBGgRR, where the capital letter denote the usual color receptor and the noncapital letter denote the unusual color receptor. (This is unrelated to recessive and dominant genes that are usually denoted by capital and noncapital letters.)

--- Red

The second most common case of male anomalous trichromacy is the "wrong/unusual" red receptor case, so the seccond most common case of woman tetracromat is BBGGRr (1 copy of the usual red receptor an 1 copy of the unusual red receptor).

Obviously, you can have both mixed copies, so a woman can have BBGgRr and be a pentacromat. At least have the genes to "see" in a 5-dimensional color space. If she can use this ability is less clear.

--- Blue

The least common case of male anomalous trichromacy is the "wrong/unusual" blue receptor case, so the least common case of woman tetracromat is BbGGRR.

It can be mixed with the other cases, so a woman can be pentacromat or hexacromat.

The interesting part is that the blue gene is not in the X chromosome, so both male and females have two copies. So a male can be tetracromat BbG_R_ . But this chromosome is not inactivated as the 50% of the X chromosomes in females. So I'm not sure if it's possible to have a different kind of vision in this case.

--- It's more complicated

Actually you can have more than 1 copy of the color genes in each chromosome, and there are more than two variations of each gene, so it's more complicated.
> She was punched in the face five times by someone who wanted his methadone.
> Go figure where we'll be if it gets legalized.

Well, presumably he wouldn't have needed methadone, because the drug he was addicted to would've been available for a reasonable price at a known potency.
Show HN: Rubix – ReactJS Powered Admin Template
> I think some of this has to do with practice. Spending a lot of time mixing paint or color correcting photographs is likely to heighten awareness of tiny distinctions.

I wouldn't doubt that practice could help, but the test (I believe) was designed to minimize practice effect. I've mixed a lot of color, but one can mix color to a shade only as far as one could determine it's right.

It used to be, color matching for printed material was done in large shops by workers visually comparing swatches to customer desired shades. This required training, but not every trainee could master it despite extra effort and time. Seemed it required native ability, talent as it were, to be able to be good at it.

Anyway, the online test is solely for one's own interest and information. I don't see there's anything substantial at stake.
If you look at the actual content, it's less useful for game art and more for training computer vision systems.
I don't eat hallucinogenic mushrooms, but I downvoted because you countered someone saying that they should be legalized with an anecdote about your wife encountering a violent opiate addict.

Conversations like this require clarity.
When I was a working student, I was maximizing my student loans every quarter. My wages were going toward rent, credit card payments, and anything else I couldn't pay with credit cards.

I also worked 40-50 hours per week during the summer. Between that and loan distributions, I could just barely keep up with my typical costs. If anything went wrong--e.g., an injury (yep!), car repairs (yep!), fines (yep!)--the credit card debt didn't get paid off.

You might predict that I would graduate with a lot of debt. You would be right. In spite of having a merit scholarship for full tuition and $4500/year, I had over $35,000 in student loans and another $5000-10,000 in credit card debt when I graduated.
In 2004 the first drive less car race was held. The best car made 11km. I thought that was an amazing effort, and in 20 years one might finish.

It took one year before the race was finished.
From a purely physical point of view, a computer monitor can only produce a spectrum of light (photon histogram) that has spikes on the wavelengths for red, green and blue. These spectra reproduce the vast majority of colors that are perceptible to humans with normal vision. However, the "colored discs" in the article exploit the fact that two colors that are perceived as identical, can in fact be produced by (at least) two different spectra of light. Tetracromats can differentiate between some of these spectra, whereas people with normal vision can not.

(A simple example: The color cyan can be produced by additively combining the spectra of blue and green, but can also be produced by creating photons with only the wavelength of cyan, 490-520nm according to Wikipedia. A person with normal color vision would not be able to differentiate between these two light sources, whereas a measurement device or perhaps a tetrachromat could. A computer monitor can only produce the first of these).

So the answer to your question is no, unfortunately.
can we say a SaaS is a commodity business? Amazing history, I am blown away by Standard Oil, although I wonder if the same principles apply, continue to innovate and keep prices low.
I looked at a few companies in this space when I was at a VC, and the fundamental problem was that they didn't provide enough value to the end developer.

Aggregator APIs tend to provide extremely reduced functionality compared to the source API, and the ease-of-use doesn't compensate for this. In most cases it just makes more sense for the developer to spend a day building a custom adaptor for the API.

That said I think the SQL front-end is an interesting twist. While developers find it easier to use the source API there are many people (i.e. business analysts, etc.) who can't program but can use SQL and that might be an interesting market to go after (and also a market more willing to pay).
I think it's hypocritical to defend keeping other drugs illegal while allowing alcohol and tobacco to thrive.
Either we go full puritan and forbid all drug use, or this talk of defending people from themselves is just protectionism for the tobacco and alcohol industries.
> Thou who bites off the latter, increases the former in psychiatric and general healthcare.

Do you have data on the overall cost of legalization/decriminalization? Surely the decrease in the cost of incarcerating drug offenders is significant.
I have my prestart ritual of reading the first 300 news :)
No different from Breast Implants or other enhancement surgeries which are already mainstream.
I agree with your point. These are practical matters with practical consequences. However I do not believe you take your reasoning far enough.

It's worse than that. As you know, many times effects can be randomly distributed. So ingesting substance X may kill or maim 70% of the people, do nothing in 29% of the people, and cure incurable cancer in 1%. So who gets to decide whether granddad, who is dying of this cancer, gets to take the substance or not?

The problem the western democracies have been struggling with for decades is that at some point somebody has to say "no". No, I will not pay for the consequences of your choice to smoke every day. No, I will not provide a treatment that may only work in 1% of cases. Somebody has to be an adult. Instead we hold conflicting ideas: I want to make my own choices vs. I want to live in a world where I do not have to worry about anything. Unfortunately the universe does not feel obliged to play along.

From historic experience, I don't think criminalizing things we don't want to pay for as a society is workable. How about providing some kind of long-term healthcare insurance that would cover people in a vegetative state for many years? Or just making it all open and informing people as much as possible what's going on around them? Because there's also a perverse aspect of the relationship you describe: by giving healthcare providers sole discretion over these things, we're also putting them in a position to define deviancy down.

I fear the real problem isn't making yourself into an addict for the rest of your life -- it's that the rest of us want a more homogeneous society in which fewer and fewer outliers are tolerated. That worries me from a statistical and evolutionary standpoint. We need our Edgar Allan Poes, our General Grants, our Gonzo Journalism. Yes, 99.9% of junkies are basically walking dead people. Then you run into a Freud. We can't sacrifice the Freuds in our empathy towards the others who are suffering.

Would I sacrifice 10% of the population on an ongoing basis to keep that kind of chaotic, creative, evolutionary potential? I don't there's even a question about it. It's an existential question, not a moral or philosophical one. This has been the natural state of our species for eons, and it's what brought us out of the savannah. The real question is why we would want to deviate from it.

I don't want to live in a totally-controlled world where I am unable to make capricious decisions affecting the rest of my life -- and I hold that opinion for purely pragmatic reasons. It does not sound like any kind of future state for mankind that we ever imagined (aside from dystopian fiction) It also does not sound like the species has much of a future if it keeps heading this way.

Freedom and natural variation sucks. Let's have more of it.
Critical Vulnerability in Joomla Allows Hacker to Gain Admin Access
I find the creativity and focus tones to be helpful for focus.http://iso-tones.com/index.php/tones/miscellaneous
I was indeed praising him. 2) he used html/js, and i'm glad flash isn't needed to make such a tool 3) i was happy it's fast enough. 4)no u misunderstood; i pressed ctrl+u and have seen the source code, indeed. it's an empty body with few JS files. I find it remarkable as HTML's document centric approach with viewable document structure disappeared from view and moved into the JS files.
how do i contact you. No contact details in your bio .
Germ.io – Get from Idea to Execution
Wouldn't protect against passive eavesdropping though would it? They'd just mim everything
> I think some of this has to do with practice. Spending a lot of time mixing paint or color correcting photographs is likely to heighten awareness of tiny distinctions.

I've never done either, score 12, age +- 50, male.

Interesting test, harder than I thought it would be.
Intelligent chat that makes your team communication twice as fast
What does right click have to do with anything? The HTML source code for the page is 25 lines long and contains no markup at all. Which is not a critique, of course :)
You're travelling to a new city you've never been to before and you're looking for a hotel that's cheap but decent quality, in a safe area and well connected via public transport to the tourist areas.

How many steps does it take you to find a hotel ?

How many steps should it take ?
+1 on making it iPad-compatible and making the demo without subscription. And snappy webapps in the iPad are rare.
Teletext ad, 1978
Why Apple Watch Is All About the iPad
I definitely think so. Why wouldn't it be? Do you think Java 8 or 9 would be able to solve OP's problem with as much expressiveness as Scala?
Ant-sized radio runs on radio waves
If the test of a technology/codec is its ability to transport pornography; I'd say this is being successfully adopted via webm.

http://blog.4chan.org/post/81896300203/webm-support-on-4chan
> Go figure where we'll be if it gets legalized.

I know this is old news, but Portugal actually tried in 2001 and has some numbers on the positive effects of broad decriminalization of most drugs.

http://en.wikipedia.org/wiki/Drug_policy_of_Portugal

http://www.cato.org/pubs/wtpapers/greenwald_whitepaper.pdf
I scored 0 on the test first time (perfect color vision), no practice, and I have pretty much no experience with any kind of art. (27 male for ref)

EDIT: Had another 2 tries, got 4 and 12. Turns out practice does more harm than good - after 3 tries it's a bit disorienting trying to read off the screen. Gonna have to take a break from machine.
Legalise and tax it then. The exact same argument could be made for smokers "not being fair on everyone else", except they contribute more in tax than they use (partly due to dying earlier).
Not a single word about daala: too bad.

https://gigaom.com/2013/10/15/monty-montgomery-joins-mozilla...
You could dump your ratings in the bitcoin blockchain. Decentralized, hard to forge, automatically archived in lots of places and outside of centralized control.

Thinking about it this way, the real value of bitcoin might not be in the coins but in the blockchain itself.

It's essentially a write-only log that you can append to by paying a minimal fee.
Chocolate Caramel Banana Cream Cupcake Recipe
\tangent A computer-based color test might not be able to detect tetrachromacy, because monitors do not display a continuum of frequencies of light. They are intrinsically tied to trichromacy, by combining only three frequencies of light in different proportions. RGB.

It's mathematically possible that a continuous spectrum of light also wouldn't pick it up, if its only effect was that different combinations of frequency that appear identical to an ordinary person could be distinguished. (Not that this would confer any evolutionary advantage.)
Patent-free video is good for the web, and makes it more likely to get broad support. So good for Google.

DRM in HTML5 means that you don't need Flash/Silverlight to play Netflix, etc. Which means that you can support video more easily. So good for Google.
Man-in-the-middle is an active attack.
The night vision painting recovers quite a bit of the visual experiences: how shapes are arranged in space, for example. What is recovered in the multicolor eucalyptus from the tetrachromat's visual experience?

El Greco usually paints figures close by. Portraits, mostly. Your question does not apply to his most famous paintings, I don't think.
Declarative approaches (like answer set programming, or satisfiability modulo theories) revolve around expressing what the final result should look like, with no regard for how the result is achieved.
Ask HN: Is there a unikernel for Golang and/or Rust?
I'm aware of MirageOS for Ocaml and HalVM for Haskell.

Is there a Unikernel project for Golang and Rust?

How about other languages?

What is it exactly that makes one language suitable for a unikernel, and another language not suitable for unikernel?
Sandisk Unveils Massive 512GB SD Card – But Is It Really Needed?
The comments there are pretty much why people talk about a "distortion field" around Apple. It's basically person after person saying, "once all the iPhone 6 users start wanting to pay, they'll have to change their mind."

A few stats (from http://www.statisticbrain.com/wal-mart-company-statistics/): Wal-Mart, as a country, would be the 19th largest economy on earth. Of every $1 spent in the US, $0.06 goes to Wal-Mart. There are 100,000,000 shoppers in Wal-Mart every week.

NFC needs to become the way you expect to pay for things. Otherwise, it's Passbook -- that thing you vaguely remember that your phone can do, but that you don't really use, because in the time it takes to figure out if you can, you could just swipe your card.

If anyone's going to push it mainstream in one big push, it will be Apple pairing it with new iPhones. But it's not a given that that's the way it plays out, and every large retailer who pulls out is important.
Looks like the author put together some decks of slides on his website:

http://bradn123.github.io/
From my photography experience I noticed a lot more abnormalities than just tetrachromacy, which is not uncommon amongst artists. I had a model that was "seeing" colors in the sounds (synaesthesia) - she was often saying you talk to me in blue or that person has such a nice white voice.

I've been tested for color vision and I am 100% accurate meaning I can discern subtle shades from each other precisely with no effort. I also have a very light form of synaesthesia manifesting itself by seeing a flash of light in the night right before an unexpected sudden loud noise (yet with observable latency) - like seeing a lightning just before hearing a thunder, even if the noise is not accompanied by any light.

I was also always wondering if what I perceive as "blue" is the same as other people perceive as "blue"? What if the neural response in my brain wires the color sensation in the same way as other people perceive "green"? That would help to understand individual preferences for colors. Also, we know there are special cells in retina doing direction detection, edge detection etc. - what if this had a profound impact on how we individually perceive world around us? Somebody can have a strong edge or directional detection present in their view all the time, logically assuming it's normal for the others as well that are lacking that ability. We are just too diverse, and people are rather quiet in order not to risk being considered abnormal and marginalized, a common problem for artists in general.
The major 19th-century French authors have also long been standards in the US, both among general readers and in the reading list of K-12 education: Victor Hugo, Alexandre Dumas, Gustave Flaubert, Jules Verne, etc. However that was established in a period when American literary culture was heavily influenced by the French one.
Front end track at Nodeconf.eu
Infinit is a new great way to transfer files
Not completely, but there was/is a line of advising to use Scala as a better Java. Java is getting better and better with subsequent versions, so at least this line of Scala loses strength I believe.
It's a requirement imposed by lobbying of the UK media companies. Any content the BBC produces for its international service must be funded by private-sector sources such as advertisement or sponsorship, since the license fee is required to be used only for UK-targeted programming. But then such content cannot be shown within the UK, because that would be considered competition with the private-sector domestic media.
Also from the bower file, the magic that turns it from a web app into a standalone app is node-webkit [1]. This kind of tool is really becoming one of the best options for creating desktop applications, especially considering how powerful the browsers' devtools have become. It's having like a GUI designer and a debugger rolled up into one.

[1]: https://github.com/rogerwang/node-webkit