skysight-inc/HackerNews huggingface dataset:
> To traders, whether day traders or high frequency or somewhere in between, Wall Street has nothing to do with creating capital for businesses, its original goal. Wall Street is a platform. It’s a platform to be exploited by every technological and intellectual means possible.

Just because the day to day work of traders on Wall Street has been abstracted away from it's original intention doesn't mean that it doesn't continue to serve that function. When working in any large system, your focus can be absorbed by whatever smaller task you are working on, and you can loose sight of what your piece of the puzzle does. When working on a software team of many hundreds of developers, it's easily possible that the code you are working on is not at all specific to the problem you're solving. That doesn't mean that your work isn't helping to solve the problem.

The financial system is very complex, and I won't pretend to have the expertise or knowledge to explicitly explain the service that high frequency traders, for example, are providing. The way Wall Street currently operates might not be the most efficient system for allocating capital. But I don't think that you can immediately write off modern trading on the basis that it doesn't directly deal with the original purpose of Wall Street.
You also get to skip the question of "Login" vs. "Log In"
the last one was a lot longer than a 1/2 hour and even though it was a small percentage there was permanent data loss

There was permanent data loss on EBS volumes, which are explicitly stated to be vulnerable to data loss.
Yes, you're right. I was wrong. Thanks for explaining. My calculations are below. Hopefully you have enlightened me; please let me know if I'm still confused.

4awg wire is ¼Ω per thousand feet (6dB of resistance below 10AWG), or 0.005Ω for 20 feet. 20 amps × 0.005Ω = 0.1 volts. So the voltage drop is 0.1 volts, which is 0.8% of 12V or 0.08% of 120V. If it's 20 feet each way, it's 1.7% or 0.17%.

The low-voltage gets you double: you need more amps to carry the same power (which is what I thought you were saying) and you also need thicker wire to carry the same current.

So, to take a worst-case example, if you have a 900W microwave oven that can tolerate a power supply 10% lower than nominal, and you're running it on 120V 20 feet from the breaker box, you can deal with 6 volts of drop on each side of the romex, at which point you need 900/(120×.9) = 8⅓A. 6V/8⅓A = 0.72Ω, which means your wire can have up to 36Ω per thousand feet, which would be 25AWG, which is about half a millimeter across and commonly used for Ethernet. Not safe, because you're dissipating more than a watt per foot, which might set something on fire, but the microwave will still run. (For safety you'd probably use 12AWG instead, which is 2mm across, if not 10AWG.)

If instead you're running a different 900W microwave off 12V, you need 900W/(12V×0.9), which is 83 amps. But you can't afford more than 0.6V drop on either side of the rails, and 0.6V/83A = 7.2mΩ, so you can't afford more than 0.36Ω per thousand feet, which is 5AWG, which is a copper bar 4.6mm in diameter, thicker than any wire in a normal person's house. Again, that's not to be safe — that's to get the microwave to work at all. You're still dissipating over a watt per foot of cable. To be safe, you need 2AWG, which is 6.5mm in diameter, and a pain in the ass to bend if you don't get stranded wire. 20 feet of copper 2AWG triple-stranded wire costs US$150, which is more than the microwave, and weighs 15 pounds.
Small correction: neo4j is limited to the resources of a single machine, but the database doesn't need to fit in RAM. You will see a significant slowdown once your data gets too big for RAM, but neo4j has put a fair amount of effort into efficient caching.
I've done something similar over Voldemort. Local traversals are probably comparable, depending on how they partition and how much duplication there is. And then, you get to do large traversals, which is nice.

I don't know how good Agamemnon is, but I like the approach.
My point was about forward looking statements and inducing companies to reveal their rational processes.

So by all means, use your gut. Then show your work. People can then bet on your gut. Or somebody else's work.
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Evolution Is a Spiritual Process: An Interview With Ray Kurzweil
Aha! The front page fits so well on the ipad I didn't realize it scrolled. You should maybe give instructions in a modal when you first load a new document... Great work though!
Freshman English classes were required where I went to school, too. Some people still couldn't write a coherent paragraph, even after passing all their English classes.
It's interesting that one of the references Aaronson cites [63] is the pg essay "How to do philosophy" http://www.paulgraham.com/philosophy.html
We're the Hipmunk for Gift Cards (had a TC article written on us!) http://cardnap.com/ -- Facing some technical difficulty at the moment, hopefully will be fixed by tomorrow.
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Unfortunately topics like this never get much attention. The only thing I can recommend is to find a topic that interests you and then just go find something that sounds neat. It doesn't have to be the next Google and it doesn't even have to make money, just do something.

For example, I've recently become fascinated with data mining. To explore this area and get a basic idea of how it works, I'm playing with the Twitter API and trying to look for neat things that can be done with the data available. One idea I've come up with is an app that recommends people to follow based on the hashtags that you use frequently. It's still a "half baked" idea for now, but maybe something good will come from it.

Good luck.
pg, can you ask the YC founders to stop announcing their new companies as the "The This of/for That" for example (from the front page):

"Leaky (YC S11) is Hipmunk for Car Insurance"

I honestly don't care if your new company is "* (YC S11) Is The Facebook for Unicorns," since it really tells me nothing. I have to figure out what a Hipmonk is before I can understand what they do. Hold on while I call the Dalai Lama to ask about the difference between a monk and a hipmonk.

Of the YC S11 batch with announcements up, it seems the Snapjoy folks are doing it right (from the front page):

"Snapjoy (YC S11) Will Organize Your Photos For You"

Now the Snapjoy announcement above provides concise and useful information about what they could do for me, the potential customer.
> # silly macros

I get shell access on one of my webhosting companies (DreamHost), so I scp data up to it a lot, but the path is a bit of a pain to type, except for this shortcut:

# ctrl-d ctrl-h is a mnemonic for DreamHost
'\C-d\C-h': login@mysite:login/path/to/mywebsite/data etc.
because its illegal

Not trying to be difficult, or troll.

What laws would this be breaking? The data they are gathering is proprietary and people have opted in to that data by using their services. Why shouldn't they use it to their financial benefit?
Actually I disagree. Shorts one of the few cures for bubbles that we have and they are weakened greatly by institutional rules that favor promotion over rationality. But, and this is a big one, we would have to reveal trading positions daily to banish all speculation.
I've followed mosh, the scheme shell of this project, for a while. Not only is it a very fast, full R6RS scheme, but it contains an code serialisation/motion library (fasl). This allows me to spin up hundreds of mosh instances and have a central agent send code and data to each instance for execution. Similar I guess to Erlang's code replacement mechanism (tail calls are a must), and much better than eval.
I think the point he is trying to make is that where were the Dems when these charges were run up, and I agree with the point. Why are we suddenly hitting the debt ceiling? Does noone in Washington have a calculator?
Transparency doesn't mean anything if you're just looking at a stream of symbols that have no standardized meaning. Companies can make anything look good through creative terminology when they aren't held to strict standards such as GAAP. Internal books kept to internal standards simply aren't helpful to people who aren't privy to the processes by which they're kept, even if you deliver the transactions at 21st-century speed through a 21st-century firehose.
Uh... what is with this newb j-ashkenas account?

Jeremy's already got http://news.ycombinator.com/user?id=jashkenas

Is this a fake?
Centralized Places Data with Factual CrossWalk API
Great article, really makes you think about O(n) substring searching doesn't it?

It would've been nice to drill down why mmap makes a difference in particular, why not use something like lseek to skip characters?
My opinions are my own.

<full disclosure>

BizSpark sponsors Hackers & Founders, and they've been great to work with, but their sponsorships just cover costs of events for Hackers & Founders.

</full disclosure>

I am a believer in "If you don't pay for the product, you are the product", however. I'm not a fan of Facebook for many of the same reasons.
Yes, solar will provide orders of magnitude more energy, the way oil did. This is one of the most important facts in 21st-century politics and economics, so it's surprising that it's so little-known.

Total world marketed energy consumption is about 500 quadrillion Btu per year, about 17 terawatts. Total terrestrial insolation is about 130 000 terawatts. That's almost four orders of magnitude more. It's just that, until now, it's been more expensive than fossil fuel to extract it, with low EROEI and long payback times. That has changed in the last decade, but really only in the last four or five years.

It is true that it is not a particularly limited resource; the sun will continue burning for a long time, regardless of whether we set up solar panels or not.
char *t = “VEYRONB “;
uint64_t u =*(uint64_t *)t

If this is done, you need to ensure your strings are stored in memory on aligned boundaries (8-byte for 64-bit ints) otherwise mis-aligned data access could seriously degrade your performance.
What processor should I buy? Intel's crazy pricing makes my head hurt
Ask HN: Software Patent Lawsuit Insurance for Indy Devs?
It occurred to me in light of the recent spate of litigation against small developers that there should be some kind of software patent lawsuit insurance. Failing that, perhaps a service that allows developers to pool money in case one of them gets sued? Do such services exist, and if not, why?
This idea is interesting, but you still need to figure out how to account for those transactions. In today's system of accounting a transaction can take many different forms with radical implications:

For example:
Company A sells product to Company B.
When is cash exchanged? When is the product delivered? How much interest if any is part of the transaction? etc.

What may be required to implement your idea would be to create a new system of accounting that has more depth than traditional accounting (Accrual Accounting).

*Also, what is "business of financial analysis"? There is no such business. There are many businesses that implement financial analysis, and all of them add value to the economy and to their clients, investors etc.
Aye, I love buying from Manning. They've been doing it for ages too, I don't see why all the publishers don't all give away PDF copies when you buy a physical book.
HN search is a bit out of sync, e.g. see the top result here: http://www.hnsearch.com/search#request/all&q=by%3Ahelwr+...

and the actual link: http://news.ycombinator.com/item?id=2403290
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A business model around people paying $8/m seems like paradise to me.

Well, I guess using "wee" is more common than I thought, however I would still prefer to stick to standard english whereever possible.
http://xkcd.com/871/

and

http://lesswrong.com/lw/6z/purchase_fuzzies_and_utilons_sepa...

This is an efficient way of buying fuzzies, for a really cheap price, and it's important to buy fuzzies or you start to fade. If you want to buy utilons, find a maximally effective charity (this means you either check Givewell or pick your favorite existential risk reduction org) and donate more than $10. Do not confuse the two problems, and do not attempt to solve them both at the same time!
The problem with "Sign In" is that it reads a lot like "Sign Up" (another common web site expression).

Consumers should be accustomed to Log In and Log Out (e.g. on Mac OS X the Apple menu says "Log Out [user name]..." and the user menu has a "Login Window" item).
Apple getting sued over OS X Lion fast boot
There's all sorts of legal issues. It's a minefield.

And in any case, there's huge PR exposure. And Google is ridiculously sensitive to bad PR.

I often get the sense the lawyers are running things, considering how often I've given up personally on ideas that involve data mining.
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Apparently reddit moderators remove links to lulzsec torrents or news articles that directly link the torrents, as it violates the rule about posting personal information.

I realise this article doesn't do that, but do similar rules apply to hn? I recall seeing direct links to lulzsec dumps on the front page of hn. Is the reddit moderating team enforcing this rule simply as a choice or is it a legal decision?
More directly: if for example the New York times posted an article with a link to the torrent front and center, are they breaking the law? And it so would they likely be pursued for the violation?
The obscurity of the company filing the claim is one of the things that's wrong with the current U.S. patent system. Whomever they are, they haven't existed for very long and they obviously don't have any actual engineers working on things like computer boot processes. As far as I can tell they're just a bunch of guys with a checkbook and some lawyers who bought a patent much like any other speculative investment that could pay off.
1) It's a general joystick api, not just xbox.

2) You can't actually use an xbox controller with a computer (and hence with firefox) anyway without a USB cable. You could use a 360 controller, but not the first Xbox.
Most useful comment on this thread.
I'm not sure HN has any publicly posted rules regarding acceptable content.

The one guideline that seems to apply is content should not be too contrary to YC interests.
While this is likely, it is nearly impossible to get the people who are kept in power only by FPTP to vote against FPTP. The movement's goals seem somewhat more achievable. Also, we would hardly do worse by electing a Republican instead of a Democrat or a Democrat instead of a Republican.
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The ability to decline to sign budgets seems, to me, quite powerful.
one should build a crowdsourced status checker to really know what happens.
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Large short ratio is the first sign something is amiss. In an environment with imperfect information, someone knows more than the news on the company press releases page.
Protip: Consumers don't care about security.
Tencent: March of the Penguins
JS has other fundamental limitations that make it a terrible IR (not being able to choose floating point vs. integer arithmatic is only one of them), there's also the lack of a distinction between hash tables and objects.
The exchanges operate for the benefit of the listed companies. NASDAQ and NYSE can compete on features and trading rules. Leaving aside the problem of company officers trying to screw the stockholders (I'm not a fan of stock classes that give different voting rights), companies will list wherever the rules give the highest value to their current shareholders. And the highest value to the shareholders is provided by the market with the parasitic HFTs.

I don't understand. I though Mark Cuban was a fairly sophisticated investor, but he seems to be marveling that Australia taxes short term capital as ordinary income and LTCG at a lower rate, which is of course exactly what the US does.
The explanation of the analog stick axes needs clarification: "For example, the XBox wired controller has 4 axes (top to bottom, left to right, and two diagonals.)" What's a diagonal axis, if not a linear combination of the vertical and horizontal axes?

At minimum, for an Xbox-style controller, you should be seeing a vertical and horizontal axis for each of the two analog sticks, and an axis for each of the two analog triggers. From an original Xbox controller, you should also have six analog buttons (though they are usually treated as standard binary buttons).

Other than that, this looks pretty cool. Perhaps in a few years, we'll see stuff like this combined with WebGL to make an open-source, cross-platform gaming environment that goes way beyond the current crop of 2d Flash games.
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Look into 37Signals, specifically David Heinemeier Hansson. They're always giving speeches/talks about running a business with reasonable work hours.
Who is hipmunk? i am not a huge start up junkie so I am assuming it is another YC funded company. On your actual website you say you are orbitz for car insurance. I would stick with the orbitz analogy.
(Or is it simile, i always forgot which is which.)
In the opposition? With a minority of votes, voting against this stuff? That's not good enough?

We aren't suddenly hitting the debt ceiling, we've been hitting it every year or two like clockwork for decades. It was raised over a dozen times during the Reagan administration, for example. Suddenly?
Ask HN: Debugging html 5 apps on multiple platforms (iOS, Android, browser)
Hi,

I'm looking for suggestions for best practices for debugging an html 5, JS and Java back-end application that runs on multiple platforms (iphone, android, browsers). My startup is socrative.com and the nature of our product is that we sync two different client devices with a server and with each other to create a clicker system.

Any advice welcome.
Besides the name issue (leaky) and the giving-your-sensitive-data-to-a-small-startup issue, one other thing that I question is how sticky is this startup? That is, how often will you visit it? Once a year, tops.

If you find an insurance that you are happy with, you'll likely stick with it for a couple years at least, and there is no reason to visit this website during these years.

Given the above, I don't see how they can ever make a ton of money.
To do that you basically you need to forgo all the benefits of cloud computing and think of it like hosting at two traditional datacentres.

It's not unsolvable, but as others have mentioned it's probably not worth the time or money needed to have a live standby. There will be a level of failover speed that is worth having, but that might be "if EC2 is gone we can recover in 48 hours with no more than 6 hours of data missing" so the contingency will not kick in for a short EC2 outage.
Android Application Development and Role of Mobile Apps Development Companies
Obviously they will be pissed, but I'm curious what the reaction is from the officers and sherrifs in the limelight...
Log into a machine, Sign in to a service
I hate it when a pedantic correction backfires. I should have been more careful. :)

You're right to raise that question. It's a classical result of computability theory that there exists an undecidable problem that is strictly easier than the halting problem: http://en.wikipedia.org/wiki/Turing_degree#Post.27s_problem_...
Tell that to people who have been buying Apple stock. Disclaimer - Ive never owned Apple stock at any point in time.
Sorry. The post renders well in Chrome on my Mac and on my Nexus One. But apparently not so well in other browser / platform combinations.
I ended up grabbing Designed for Use because I recall people on HN being big fans of the writer's blog on the topic, anxious to dig into it.

What did everyone else get?
The reason for the delay in getting the white iPhone released was the quality of the photos from the camera (I'm not an Apple fan, but kudos to them for holding back the release of a product that most would consider only slightly flawed). I suspect we can see more than just 'colored' iPhones in the next release, and seeing as so many people use cases anyway, does the color of the device itself actually matter.
Why the Next Big Thing Will Come From Small Innovations
The problem with Godel and friends is that they point to the limits of rationality. Without a transcendent rationality (and morality) upon which to discurse, philosophers are out of a job, so to speak. If you use logic to understand everything, the last thing you want to deal with is somebody telling you the limits to logic. So they blow him off.

At least I think the above is true for "analytic" philosophers. The "continentals", on the other hand, have been engaging in an extended attack on transcendent rationality since Nietszche who said, to paraphrase, that every transcendent metaphysics was an attempt to justify a morality, and every morality was facilitated a (usually inarticulate) "will to power." (This line sort of starts with Hegel, who posited that rationality emerged from history and the development of a collective human spirit, but wasn't "out there" before that). Godel seems like ammunition for these guys, but I don't think they have picked him up much. I guess if you are anti-rationalist, the last thing you read up on is advanced logic, even if it is so advanced it comes to its own frontier.
I suspect that the referral fees from the insurance companies are paid out as percentage of the premium for the life of the policy. If so, that would add up fast.
Tim Pope has a bunch of awesome plugins:

https://github.com/tpope

They are all so great, but I will list a bunch that you should check out anyway: fugitive, unimpaired, pathogen, ragtag, surround, endwise, repeat.
We (PagerDuty) were down for a bit. We will move off of AWS asap once the dust settles.
Yahoo Discount Means U.S. Web Portal Free in Takeover: Real M&A
Three Questions About Free Logo Maker Software
But there are so many disadvantages that it can bring in for your business which is generally ignored by the business owners.
> And statistical norms for a single dating site don't necessarily generalize either.

Right, these statistics go very well with the thesis the author is trying to put forward (what a lovely job he does, too). But they do not necessarily generalize to the population at large.
Well seeing as you were only paying $100 a year 5.5 years ago you cant complain that much. I can not believe you got such good rates 5 years ago.
The other question to ask: Would they likely be pursued even if isn't illegal (i.e. some us attorney trying to make case law or a name for him/herself)?
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Who are Orbitz? Why not just explain what the site does without namechecking other companies.
It's probably up due to the fact that reddit is down too ;)
Not true.

If you keep on following the trie, you'll fall out of the trie at the point that there are no words that have that sequence at the start. Which will happen by the time you exceed the longest word in the dictionary, but will probably happen substantially before that.