skysight-inc/HackerNews huggingface dataset:
Long article, but one I found particularly interesting as I have a medical background.

The article presents it as if it was some big revelation in 2005, but I'm not sure it was as big as implied. I mean some of the specifics were, but I trained in my residency between 2000-2003, and we were very much trained to be skeptical of studies, and to question results. Evidence-based medicine was in strong force.

His model predicted, in different fields of medical research, rates of wrongness roughly corresponding to the observed rates at which findings were later convincingly refuted: 80 percent of non-randomized studies (by far the most common type) turn out to be wrong, as do 25 percent of supposedly gold-standard randomized trials, and as much as 10 percent of the platinum-standard large randomized trials.

Non-randomized studies are the most common, of course. They are the cheapest to perform by far. but whenever I read non-randomized study, I think "interesting" but realize it doesn't mean anything. Correlation does not equal causation. These non-randomized studies though are the ones that raise questions and possibilities that later fund/justify more costly randomized-controlled studies.

And something to be aware, which is perhaps part of the purpose of this article, is that there is a reporting/publishing bias. Negative and neutral results simply don't get reported in journals. You form a hypothesis, perform a study, and get negative results -- well, you're not going to try to publish it. Statistically speaking, there's going to be some bell curve distribution about the actual result. So let's say the actual result is "0" (no effect) for a drug or treatment. If you do enough studies, you'll get a few that fall on the positive side, which I presume is what accounts for some of the false positives.
>>>everything still rocking<<<

Sigh.

I wonder what happened to changing the world?
This would be a bit more fun with word problems involving the time turner, potions, etc.

"Fluffy has three heads, and each head can eat two bowls in a sitting...how many bowls should Hermione fill to satisfy him?"
People (or their lawyers) who have a pattern of frivolous suits should pay the costs of dealing with a frivolous suit.

People can bring great stress and costs using the legal system. Its not just a tool for justice, whether it is used by the rich or by the poor.

Everybody that uses the legal system should think twice about whether their suit is truly warranted.

Of course, there should be standards by which this is judged.

And damages should not ruin those bringing suits. Its not even necessary to me that all costs be covered, but that some real cost be felt by those bringing the suit. 5 or 10% of one's annual income seems not unreasonable.
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An mp3 player and a calendar are not operating systems. If your contention is that C is terrible for actual OS development you'll need a better argument.
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yes, that's what I was trying to express
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Why worked ?
Norwegian traders convicted for outsmarting US stock broker algorithm
> I did that to 'acacia', they took a walk when they found out that I could probably invalidate their patent. (and I probably really could, and would).

I'd have looked up whoever else they were suing and maybe quietly passed along a tip about where to find prior art.
But the speed difference is still too big. Even if PyPy is two times faster than CPython, LuaJit still remains in most of the cases the order of magnitude faster, they are comparable only when calculation bottleneck are bignum routines and not rest of the language:

http://shootout.alioth.debian.org/u32/benchmark.php?test=all...

In short, if you care about the speed and LuaJit is an option, the choice is obvious.
+1 Phing. We use Phing for deploying to production and deploying a staging instance of the app.

Phing can checkout from SVN, run a mysqldump to snapshot the DB, modify text files (i.e. different .htaccess files for staging/production), run arbitrary shell commands and ping web-APIs for notification etc.

Deploys take between 10 and 30 seconds.
"the ultimate goal of a court system is justice and not any ideological aim of helping anyone arbitrarily at the cost of fairness, whether it be big companies or the "little guy," institutional defendants or consumers, or any other class of claimant or defendant"

That ought to be the guiding principle. Well said.
The problem here is not the outwitting - but rather the manipulation:

If I _know_ that a news item about a major law suite against a company
will bring down it stock (predict behavior of others) - trading is valid.

If I create a false news item in an attempt to bring down the stock - jail.

They didn't analyze current affairs to guess how the trading algorithm will respond, rather they used it to manipulate the stock price.
Oh sorry then, I don't use Java a lot these days...

It just seemed weird to me that I had to include it. I'm used to this functionality being available without any additional steps because it is implemented in something like an "Object" class.

(Lots of Ruby these days)
It removes the box, but its reflection is still present in the mirror, which is spooky.
I hate SMS. My fingers are too unwieldly to type long messages on a cellphone.
At this point the stock market truly appears to be by and for the big players who can process thousands of trades a second. For the rest of us it is basically akin to gambling in a fixed casino... that everyone knows is fixed.
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I'm waiting for howtospeedupyourwebsite.com
How to get most out of a visit to San Francisco?
Hey everyone!

I'm owner of the small web development company in Europe. At this moment I'm planning my trip to San Francisco (31.OCT-15.NOV).

I'd really like to meet with interesting people and to visit great companies to see how you guys are building amazing services and applications!

Where to go, whom to meet, how to visit Google :), where to stay for 2 weeks, what kind of events are there? Any type of info is appreciated!

And of course I'd be glad to have a cup of coffee or a glass of beer with anyone interested in experience sharing! Just send me a note :)

Cheers,
Jean Mauris
jean@true-vision.net
The original linsched paper:

http://www.cs.unc.edu/~jmc/linsched/linsched_paper.pdf
Ah yes, spending 5 minutes and 15 texts to accomplish what a quick 30 second phone call would have done.
Lucy Kellaway, a journalist with the Financial Times who also turns up on the BBC World Service business show, is good on this. She regularly roasts executives for nonsensical empty verbage.

She recently had two columns praising Apple and Steve Jobs for being straightforward.

1) Regarding Apple's plain-spoken iPhone app guidelines
http://www.ft.com/cms/s/0/6770a2b8-c2a1-11df-956e-00144feab4...

2) Regarding Steve Jobs' curt response to the college girl seeking a response for a school paper story
http://www.ft.com/cms/s/0/77c8e4cc-c823-11df-ae3a-00144feab4...
I did that a few times already.

I have a nice fat file for people that are in that position and that contact me.
Take a look at Graham's book for a first pass: http://www.geekatlas.com/
Tangentially related: the downside of using your functional environment to map an expression evaluator on, is that your instruction stack is out of your control. If your expression language doesn't contain loops or recursion that's fine, because you can guarantee your program terminates (simpel formulae are not turing complete iirc) but if it's any more complex, you will want to be able to pause or terminate execution without killing your evaluator thread. Or you may want to do concurrency or special return semantics or stuff like that. For these reasons you'll want to go beyond the early-chapter SICP technique of a recursive (eval exp env) and manage an instruction stack yourself.
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Genuine question: does that depend on what "striking it big" means? If you consider making, say, an amount that's a <10 multiple of what you would have made with an ordinary job in your league, does that consistute "striking it big"? It would for me, but do you include that measure?
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Ask HN:properties of real numbers
Hello,
The addition property of real numbers says if a=b,c=d then a+c=b+d.can someone tell me why is it true? is there an algebraic proof for this or should we accept this as being true based on inductive reasoning?i really tried doing a google search for a proof but couldn't find any.
(i know i had asked a similer question a couple of days ago but i feel i might get a much more reasonable answer to this one..may be the way i had put accross the question wasn't sensible)
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isn't it also an example of how the system in general fails to educate people not to live over their possibilities?

Why did the person end up desperately needing $200 more than she earned at the end of the month in the first place?
Why does he have no savings put aside for the rainy days?
Why doesn't this person have a safety net of some kind, be it family, friends, a boss that can pay in advance etc.. and yet ends up with debts at the end of the month?

(there are obviously many reasons for finding yourself in a shitty situation, but from the outside the size of irresponsible personal finance management in the US seems crazy)
Thanks. I really had no evil intentions.
No. I wouldn't be better. Of course this adds value to the economy.

And if he overpays his workers he causes local inflation which can have very bad effects on other workers, since these privileged ones can spend more, which raises prices for everyone.
there is something unnervingly Orwellian about this.
If it's a skill people can learn with reasonable effort, though, why would it be that expensive to purchase? In a market without artificial moats, the cost of services should approach the cost of providing them, not approach some measure of their "value". Even if a service is really valuable, in a competitive market with low barriers to entry, many people will compete to provide it, driving down the prevailing price.
LuaJIT is a nigh untouchable work of art, we might never see a faster dynamic language JIT.

PyPy is significant because of the nature of Python itself: the language specification is much more complex than Lua and there are currently many more users and applications.

[the more complicated the language specification, the harder it's going to be to prove things about, the harder it's going to be to write a compiler]
That's one of the points that stroke me most. I was at a company where two guys same level of competence could have up to 20%! difference in package because one knew how to negotiate and the other one did not (=was "nice&cool" imo, "naive/a bit immature" in their opinion). The company was very secretive about compensations (you always had the impression they knew stuff that you should also have known, too bad you did not know!). When I discovered about that (I was remote), my guts really hated this aspect of the company culture, but then I thought ok maybe I have no idea of what real hard ("winners") business is. I am so glad this post makes me go back to my 1st impression once for all. Be hard & clear, but fair.
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I had the same experience a lot of people are describing here with STATS - just too expensive out of the box. If you need real-time data, they're your only option, but if you need weekly updates or historical data, I may be able to help.

Playerfilter (http://www.playerfilter.com) is built on top of an API that we are looking to expose to the public (use can see it being used in the URL hash). API support isn't live yet but we are working with beta testers. Basically, we return data for players, seasons and games over any time period since 1970. Please check it out and drop us a line if you'd be interested in more details.
Ah, okay, that totally makes sense!
Absolutely agree on Android being the future, but oddly enough the very fact that you can develop using any tools you like creates a barrier to new developers. Too many options sometimes mean you spend too much time faffing about finding the perfect development environment and then jumping from one to the other. The great thing about iOS is that there really is only one way to develop for it so you immediately just jump in and start writing software.
Having worked, tangentially, on a Harry Potter Video game I can tell you that if the Harry Potter machine thought it could make money from such a title it would be in every app store on the planet.
Kudos for being successful enough to afford to build it.

That said, a 27 story building with a staff of 600, 9 elevators and 3 helipads as a personal residence for your family of 5? Methinks a tad excessive.
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And here I had always thought that loser-pays was a universal rule. This explains almost everything that is crazy about US.
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> Would that same hypothetical family prefer to have their finances ruined or have their loved saved from some random illness?

False dichotomy. The US isn't so much vastly better that the choice is go there and be saved or stay in e.g. France and die. In fact all the sources I've shown seem to indicate the US isn't the best even if you can afford it. Keep in mind that doctors tend to make 3 times more than the average salary in their European "socialist" countries, just not 5 times like their US counterparts.

>but I think we can agree that it is impossible

Of course, it always costs, the question is just how much waste is going into giving huge bonuses, etc., to CEOs of insurance companies who make even more money by cutting people's coverage (insurance is a profitable business in its own right, these guys just want even more).

>If the US is actually getting better health outcomes than other systems perhaps the cost is worth it?

It it were we could discuss it. The reports from both the WHO and Berkely indicate pretty clearly that this isn't the case.

>And to address your specific claim, I've always thought that the government should provide health related catastrophic fallback insurance similar to the way they do for floods. I don't think the government needs to be involved in the day to day healthcare or insurance matters, but I agree that getting cancer for example should not ruin your families finances.

This sounds like something reasonable to look at. Just keep in mind that so many people are living paycheck to paycheck that even a surprise bill of $5k can be enough that they never recover from it.
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I like the subtle UI elements: Depending on which browser you're using, the the order of the list of instruction changes.

The non-javascript version of the page looks great too. (And moves the noscript-instruction to the bottom.)
a = a (equality is reflexive under Peano arithmetic)

=> a + c = a + c (addition is commutative under Peano arithmetic)

=> a + c = b + c (a == b)

=> a + c = b + d (c == d)

qed
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Informal reasoning: in a=b, the 'a' and 'b' are merely placeholders that act as pointers to the same underlying value, so they can be used interchangeably. It's no different than referring to "seven" and "the integer directly following six" - I could use either reference any place I could use the other with no effect on the overall statement. Ditto for c=d. All that is happening with a+c=b+d is that two references to values are being changed to different references with the exact same underlying values, so the result is necessarily the same.

See also http://en.wikipedia.org/wiki/Peano_axioms if you prefer the math and logic jargon. High school geometry taught me to dislike dealing with formal proofs, but I think that should be about the right area to look.
It was only on the front page for an hour (at most)*, and then was gone. This entire story only got 18 points. I wouldn't say that counts as a huge story. (Using another metric, slashdot didn't even mention it)

The story about reddit being slightly slower than normal got way more coverage then this one. Maybe if an interesting postmortem comes out we'll see something come of it, but I bet that won't even be hugely covered.
No, the risk-adjusted value of <10x return is worse.
Ask HN: How to measure the size of a market?
I have an idea for a mobile app. I have been learning the Android platform recently, hoping for an idea to come along.

Working with a platform such as Android, rather than the web obviously limits the market to owners of Android devices - MUCH smaller than the amount of people with access to a web browser.

The market for the core functionality of my idea is huge - I haven't done the research in terms of numbers (that's today's job, I'm doing it now!) but it's on the news often.

How do I find out how many people are both in the market for my apps functionality, AND have an Android device (or "have an Android device AND would be willing to pay for an app")? Is there anything other than guesswork from combining the numbers of the 2 markets?
even my original idea would require a double-hit to the server, because I don't think you can extract data loaded into an image element through JS, so you'd have to read the src attribute and re-request it via XHR as raw data, and then parse that into a replacement canvas element.

The main benefit is being able to default to webp, and save all your resources in that format alone, and provide a fallback for browsers which don't support it, instead of having to provide 2 sets of images and serve different ones depending on the browser.
if a=b,c=d then a+c=b+d

Also, d= a-b+c

Probably doesn't help but thats about the limit of my capabilities!
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You don't need any properties of the reals, just some well-defined operator (+) and equality (=).

a+c = a+c (reflexive property of equality)
a = b => a+c = b+c (substitution axiom)
c = d => a+c = b+d (substitution axiom)
a+c=b+d. (Done)
I think we had 3 or 4 retakes, almost all because we end up laughing. (We have almost an half hour bloopers besides that with random rambling though :p). We did prepare some general subjects, mainly cause my friend had a hard time getting out of his words. He really didn't like doing it but realized it was a necessary evil to being even remotely considered for YC.
In hindsight it's far from perfect and our idea has somewhat progressed, but I'm not really going to make him suffer through a re-take so our video stands. It's not perfect but hey, it puts a face on the words, and hopefully it conveys some of our passion, which is the most important about it anyway.
Depending on what you need to do something like Appcelerator http://www.appcelerator.com might be of some use. Dunno if they are planning on Windows Phone 7 compatibility.
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a = b
c = d

a + c = b + d
a + c = a + c # replaced b with a and d with c
>>Learn Android, that's where the future is.

It's pretty early to tell, but not a bad prediction at all.
>But lately, it seems like the Valley is falling out of love with options. That is weird, because people keep saying we’re in an early stage funding bubble.

It's not weird, extra money for employees is an expected consequence of continued competitive overfunding for early stage companies.
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Tangentially related question: how are real numbers formally defined?

I remember that integers are usually defined in terms of successors: Succ 1 = 2. But this doesn't help for real numbers because they can't really be enumerated?
Why not ask you friends and colleagues who have an Android phone? Show them a mockup, what the app will do, ask them for feedback and wether they would pay $xx for it. Watch them cosely and only count those who are competely into it, divide that by the total number of people who asked and you have a rough percentage that you can apply on the number of android users in the U.S or elsewhere.
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we are in the same page !!!!
Simple version: you can learn it in the same way you can learn to paint. Sure, you might be able to knock out a decent picture, but you're not going to get something that looks like it was painted by one of the masters of the craft.

Knowing the theory and being able to produce great work are two different things. The price is what it is because, despite it being learn-able, the experience of writing thousands of pages of sales copy, refining them and getting the craft so down to a fine art just comes from experience and practise.
The biggest disadvantage I see is the inability to migrate your app to your own machines.

Another disadvantage is that you have a limited selection of programming languages. Plus, your infrastructure would be tied into google.

I'm working on an MMORPG for Android (http://developingthedream.blogspot.com/) and one of the obstacles I have is finding a cheap host.

That's what makes GAE so enticing. For small, to mid-size project you can really create something useful without any budget at all.

AWS, I find is too expensive for the starved programmers. (and horribly slow from my experience.)
Linode sounds ok. I guess to start off it wouldn't be too bad at $20 a month.

I'm a bit worried of scaling in a shared environment. My app would get much better performance on a dedicated box.

You're right though, it's really hard to tell how many users your app should support.

I actually plan to deploy on my HOME server.
Using a basic Time Warner Road Runner broadband account I get a slightly decent upload speed (1.76 MB UP/)

Sure it'll be a bit slow at first, but it'll be free and it'll help me gauge interest in the app.

(Plus if not many people are using it at once, it should be fast enough.)
"Van man 1, Microsoft 0"

The Australian inventor whose company, Uniloc,
was awarded $US388 million

http://www.smh.com.au/technology/technology-news/van-man-1-m...
I've learnt two things when facing those questions myself.

* Only compare yourself to the worst people getting paid to do something when figuring out if you are good enough.

* You can do what you can learn.
The time when it was possible to build simple application with good design and get tons of users is over. Today, a lot of people can do what the pioneers have done and get 0 users.
I don't say it's impossible to get so many users as FB, but it's much harder. So Zuck was lucky to have the right solution in the right time. The bar for Zuck of today is much higher, simply because they aren't so "lucky" to live in the wild beginning of computer/ internet era.