skysight-inc/HackerNews huggingface dataset:
How can a market maker be the fastest without providing liquidity? An HFT market maker's willingness to buy XYZ from Alice at $10/shr to allow her out of her XYZ position is practically the definition of liquidity; its willingness to turn around and sell XYZ at $10.05/shr to Bob is more liquidity still. Alice wants to sell and can do so immediately and at a price she accepts; Bob wants to buy and can do so immediately at a price he accepts. That's liquidity.

The markets do not do that automatically. Before automated trading, Alice could sell, but would probably have had to do so at significantly less than $10/shr, even if the market was indicating $10 was the true price of XYZ. Bob could buy, but would probably have to do so at significantly more than $10.05/shr. The primary reason for that: human beings skimming from Alice and Bob, because there was no effective way to compete.
传奇1.76
> laughing at the concept that frat boys and meathead "bros" can write code.

More of a reality than a concept.
I have the replicator and from my experience after getting one successful print you can re-print 20-40 times without intervention (aside from removing the print). The trick is (with abs plastic) to increase the platform temp to 120 C.

I sincerely hope nobody buys the $499 version because it is just impossible to print without a heated platform. The plastic slides around everywhere. Spend the extra $100 for the heated platform + case.

I really want to get one of these so I can print more than 1 thing at a time 0_o

Seems like it will be very similar to the Makerbot Replicator ($1,750), but with less support (both of the software + hardware).

For example, my build platform was slightly warped (probably the case for 50% of buyers), and upon emailing support they promptly put me on a list for a new (gratis) platform to be shipped out next week. Not sure if this will be the case for Solidoodle- my guess is no.

My recommendation - wait for a printer that can clear its own build platform. It takes 1-10 hours to print out an object, even with 1% infill. Just heating the machine takes 10-15 minutes from room temp.

I built an enclosure for my replicator and it has helped tremendously - both in keeping the cats out and in keeping the heat in.

I have a computer set up with a webcam so I can watch/start the printer from afar- but without a self-clearing mechanism, it's impossible to administer from afar and very difficult to print out many items one after the other (platform cools much faster than it heats, so if you are able to start the next print right away it would significantly reduce print time).

Also, something should be done about the build platform - it warps easily and loses its stickiness (requiring you to replace the klapton tape every 20-30 prints).

If you've got some free time and an eagerness for tinkering, go for it. Don't expect it to print effortlessly, without intervention, or in fine detail.
Here's Some Great Advice From Amazon's Tech Mastermind
Incumbents die due to irrelevance or ineptitude
Disguise that you're on Facebook with FacebookCamo
Really cool bookmarklet tool that changes Facebook to look like more 'official' websites so you can browse Facebook without getting caught at work! Also they have another bookmarklet that can make you look popular and have lots of notifications in case a pretty girl walks by your desk.
I did not say that software development was not difficult for Asians and whites. Just that it is difficult (and subjectively boring). Period.

What I am saying, is that getting a good paying, stable job is not as important for women as it is for men, so they don't have to collectively sacrifice as much. Which is purely my opinion.
While I agree with your statements, there's something funny about using the term "douche bag" to champion the cause of females in the tech world...
An interview with Lou Montulli
Hmmm... Not sure if you agree with me or disagree with me.
A post about software being released happens. I made a (small) contribution to that software and mention it. It's subjective as to whether or not I added to the conversation but it's certainly relevant. You've been slightly patronising a couple of times in the thread and, ironically, you've only succeeded in starting meta-conversation.
These are my actual beliefs and I'm arguing their merit civilly. Unpopular != Troll.
It would be more fair to say that economics assumes that people try to achieve their goals in rational ways. Which is actually a fairly good assumption in most cases when people can work in large groups, face the same challenges again and again, and can watch each other succeed or fail. There's really no assumption that people are equally informed, because when I read economists talking about things they always seem to spend at least a quarter of their time talking about signalling.

Sometimes the assumption that people are rational breaks down, like with sticky prices caused by what psychologists would call "loss aversion". In that case economists make the changes they need to to their models to account for how people differ from the simplest model. This is basically how you get the entire field of Macroeconomics.
The concern is that, say, a musician is in the process of making a new song. Google sees this, and releases the song shortly before the artist releases it themselves, and for free! Now what is the artist to do?

The likelihood? Small. But if it happens, you'll have Google befitting from that artist's work, and the artist less able to do so. The artist would have given away his right to sue, possibly unknowingly (because who reads TOS'?!) And of course Google won't pay him. Not because they don't want to, but because they know it'll open the floodgates of similar claims!
Peculiar.

I distinctly remember that for the spy community, a way you find video recording bugs is by flashing light and looking for a return glare of the lens.

If these do not show the reflective glare, then the spy community has a really nice tool (and a problem to find).
It's more than just women. I've been programming for 10 years and I don't like the culture. It's not the brogrammer stuff either. It's more the incredibly negative attitudes and litany of social faux pas.

Programming isn't the only job that pays well and rewards the highly intelligent. Women probably aren't going into software dev because they're socially acclimated enough to realize what a bad deal it is. Software skills change like the wind, and there is always a fresh crop.

Yesterday it was rails, today it's node. People who can hack people like programmers hack computers have far more valuable skills. Social skills don't become obsolete, a rolodex is far more reusable than most pieces of code.
I won't be switching any time soon. The way Google manages its products, I want to wait a bit and make sure they won't give it the axe like Wave.

Ideally, this will just force Dropbox to up their game and/or drop their prices, which I will reap the benefit of without having to migrate my data.
That's exactly what we have in mind. The thing is <div> and <h1> are just presentation tags, when, in fact, you are styling them with css too.

In hss object model, everything is a box. How it is styled and how it behaves it's up to you. There will be an HSS framework, which will provide basic capabilities like heading, dropdown, radio. We are proposing a syntax like order { isA: heading }
Whats good in Ubuntu 12.04
So if you want to change one bit, the whole freaking volume has to be uploaded again?
Journey to a successful IPO
Hibernate actually works on many people's computers, to see if does on yours, test it at the cmdline:

$> sudo pm-hibernate

Then turn it back on. If everything works ok, you can permanently add it back to the system menu with these scripts:

https://github.com/repos-ubuntu/tweaks

Need two files:

https://github.com/repos-ubuntu/tweaks/blob/master/reenable-...

https://github.com/repos-ubuntu/tweaks/blob/master/reenable-...

Instructions and links to more detailed instructions in the .sh comments.
Breakfast is the most important meal of the day
Some of this stuff is pretty hard. Allow me to recommend something that HN readers should be able to enjoy: Flatland (http://www.gutenberg.org/ebooks/201) is a highly readable introduction to higher-dimensional spaces.
Does Ivy Bridge replace discrete video cards for gaming?
>A conference isn't Comedy Central Presents, is it now? That's a roomful of people who came to learn, not to watch you hobble through an offensive routine. If I buy tickets to see Lewis Black, I know what I'm getting into, and Lewis Black isn't representing his startup at a trade show.

Well, the distinction is not that clear cut, since humor belongs to every time in life --and especially in public gatherings and presentations.

Notice how people were not troubled by humor itself here, but by the type of humor. If he made math jokes very few would say that "I came to learn, not watch him hobble through a routine".

>No matter how you try to butter this guy up, what kind of jokes you tell is a large part of who you are, because you find them funny (or you wouldn't tell them). I can tell a lot about you just from this comment, and it's not positive.

What little you can "tell about me" is mainly shallow biases from pop psychology and the usual normative PC culture of the '10s.

Let me assure you that it's totally irrelevant and BS with respect to who I am (or anybody else you judge that way is).

Let me put it in other words: when the totally friendly, PC, non-sexist guy at the next cubicle back-stabs you to that promotion and treats everybody, especially his female colleagues like shit, you'd learn that appearances are shallow, and what-jokes-one-likes doubly so.

Except if you truly consider every viewer that laughs with South Park to be a misogynist, racist, anti-christian, anti-homosexual, redneck-hater, etc etc... or anybody that ever bought a Playboy.
Mastering the world of multiple cores, multiple threads, multiple processes
> We don't want conferences censoring presenters because of reputation issues.

I think what you need here are different conferences.
Well, between this, getting caught stealing user data, and the aggravating unpology which followed, I think if you're surprised to see Path getting negative PR, you aren't familiar with Path. It's kind of what they do.

I hate to say it, because it's nearly an ad hominem -- it is an ad hominem if you believe Mitt Romney or the Supreme Court's Citizens United decision -- but the only time I ever see that company mentioned without negativity is when their ads show up in my Twitter client.
When the benign dictator states that they're choosing aesthetics over functionality I know the project has stopped being useful to me.

I understand the need for a clear vision, but I have no idea why they cannot (and refuse to) allow a configuration option for this. Even if it's a line in a config file.
FYI, your Google Voice calls are using your minutes and won't continue if you stop your plan. (Unless you're using some kind of work around.) Maybe I misread... Just thought you should know.

Good luck with the job hunt! I'm in the exact same boat!
Hey, Rome wasn't built in a day. Right now it's at a prototype/concept level. It will take a couple of years until we have an actual usable product.

Thinking you have no chances in succeeding will only get you not even trying.
I'm curious, do you think logical ability is the main thing that separates good developers from bad ones?
OK, answer me this: How does an HFT, in practice, add liquidity to a market? None of the examples given showed liquidity being added, because the people involved would have traded with each other directly without an HFT being there.

Further, I submit that any HFT will only place a buy/sell spread in the case where the volume is high enough that they can complete their purchases within seconds or at most minutes.

At best an HFT will cut a few minutes (more often seconds) off of the time of a trade. Anyone who is worried about waiting a few minutes for a trade to complete is Doing It Wrong. Therefore, the "liquidity" HFTs provide is only in the cases where it's not truly needed because the volume is high enough to provide it anyway.

I've traded in a lot of stocks where there was very little liquidity, and fewer than a few dozen trades would happen per day. I'd sometimes wait hours for a trade to complete. Where are all the HFTs providing me "liquidity"? They weren't anywhere to be found, because in the cases where the volume is too low HFTs can't make a sure bet. And when the volume is high, they aren't needed. So what good are they again? At any point that an HFT is willing to buy stock, it's because there's a high likelihood that someone will show up to pay more after a few seconds or minutes.

IMO the popular media actually has it right. HFTs really are just stealing pennies on every transaction, because they only enter a stock and "add liquidity" if and when the stock doesn't need it.

The onus isn't on me to prove they aren't providing liquidity, but on the HFTs to prove they are, and the OA doesn't even come close. In every example OP gives, the people actually buying and/or selling stock would have been better off without the HFTs in the mix (at best their trades were a few minutes faster).

If we just taxed or put a fee on a "short term hold" of a stock, say less than one day, then high frequency trading would vanish. I see HFTs as a parasite on a broken system, nothing more, and I'm shocked that so many HNers idolize them.
Individuals may be more flexible than computers, but large groups of people tend to be less so. Compare the effort MacDonald's needs to deploy a new recipe with the effort it takes Google to change pagerank and I don't think people come out ahead.
You either did not read my suggestion, or did not understand it, because it is very different from how the markets work today.

Suppose that the bid/ask is $10.00/10.05. Suppose that I am willing to buy at $10.20.

In today's market I will immediately make the trade at $10.05.

In my suggested market there is another fact to consider, the price. Suppose that it is $10.03. Then I become an outstanding buy order, and for as long as I am outstanding, the price will drift up. If the price reaches $10.05 without finding a seller, then I will trade at $10.05 with the HFT folks. But if a seller who is willing to sell at $9.90 comes along before that happens, we will trade with each other at the current price and leave the HFT folks out of the loop.

My suspicion is that, if this were implemented, a large fraction of trades would actually execute in the middle ground between what the HFT traders are willing to offer as a bid/ask. Therefore this would be even better for actual speculators than the current system. HFT players would still be in that market, but they would not be as important.

In short the difference with my system is that trades may have a small delay before they execute, but should execute at the same or better price for me than the existing market mechanism.
agreed- that was the saddest unveiling I've ever seen (esp considering how awesome the product is)
Probably a dozen people walked out of this SXSW presentation before I did (no more than 15 minutes in), I assure you they didn't find it acceptable.
The price is right!
I find it fascinating that being offended entitles people to extra credibility and lower standards of proof. It would be interesting to imagine a world being offended made you less credible, and forced you to have higher standards of proof.

(Incidentally, can anyone think of a case where you've smacked your head and said "Wow! If only I'd given more credence to the people who are most emotional about this stuff, I would have made objectively better decisions!")

I'm pretty bored of bro culture in general, and startup bro-culture in particular, but the dialogue here seems broken.
Startup innovation: A bra for stashing your phone
I am grateful for the correction. I need to do a bit of reading! Like many things cold-war and Nixon and etc it's fascinating.
I would equate funding your startup via crowd funding to funding your public company via the pink sheets.
$(document).ready does "not wait until all other external content has been loaded". It fires when the DOM is fully parsed, irrespective of whether there are still images or iframes or other assets still loading.

http://stackoverflow.com/questions/4395780/difference-bw-onl...
Why Oracle v. Google is important: the risk of a dangerous precedent
Apple's Growth Hinges On China, New Devices
No, the two browser have also different levels of implementation compliance with CSS3/CSS4 and other technologies.

So, some of those are not bugs, are differences in features.
I tend to agree with your position. The fundamentals of individual microeconomic decision-making are much more sound IMHO than their extrapolation to large-scale macroeconomic systems. At the macro scale I believe the system is far more complex than we can correctly model with anything but rough approximation. Otherwise, we'd already know exactly when/why/how future recessions and booms would occur. The High Frequency Trading question, though, exists entirely within the micro sphere where the math is rock-solid. As such, I've yet to encounter a logical refutation for its use.
Such people are scum. And, everyone has an individual decision to make whether to associate with them -- and thereby enable them -- or not.

Here's the other thing to consider: They are not just sexist. They are classic users/abusers. And that "user" attitude you see them displaying, and perhaps manifesting (though there's probably a fair amount of braggadocio as opposed to effective execution) towards women? Even as a guy, they'll manifest it towards you -- in a second, if they see an advantage.

In short, these are not pleasant people to deal with. My individual choice, enhanced by a few learning experiences, is to avoid getting involved with them -- in any fashion -- in the first place.

And to the potential employer I'll say that, yes, for me this is a non-negotiable "walking point".
I think fission is probably a lesser evil than burning mountains of coal, but yeah, it's a stop-gap at best until we get fusion working, or make much better use of that big fusion reactor nearby that's already been running for 4 or 5 billion years :-)
I really really hope they keep develop sketch up and keep it at par with google's simplicity and speed and price. One more down.
Isn't this the same as having everyone of your friends and family calling you to fix their Windows box?
Apparently you missed the entire second paragraph. Or you suck at reading.
University of Maryland, Baltimore County.
No sane browser vendor would do such a deep integration of CSS. Doing such a thing would be bad software design.

The AXR Prototype was designed to be the same core implemented through lots of different wrappers (desktop, browser, you name it), much like webkit.

We are planning to fork a popular browser in order to prove this is actually do-able. We have discovered it's not as hard as it seems.
That's the point. The defense should be valid whether or not the identity of the critic is known.
Superoscillatory lens captures evanescent waves for super images
Haven't heard the news. I guess they recieved a lot of bad feedback on that.
> How can you be stuck in the salt mines...

> The work is intellectually gratifying

Most likely, this is where we differ.

The only programming work that I find truly gratifying happens to be my 100%-non-monetizable life project. (http://www.loper-os.org) Everything else is just a way to pay the bills. That is to say, salt mine labor.

In order to eat and pay rent, I burn my prime waking hours working on things other than my life project. I understand that, given our present social structure, this is unavoidable. But I don't have to pretend to like it. I suppose this makes me a "bad prostitute," rather than a "good" one.

Programming sucks. So I am not particularly upset that there aren't more women doing the work, just as the lack of female coal miners is likewise not a cruel injustice.
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I agree, though as far as HFT is concerned (staying on topic), I'll reference this other comment below: http://news.ycombinator.com/item?id=3895308
Contra-positively, since it doesn't have many users, maybe it's not the coolest.
Ask HN: Facebook just bought the Secret Alley in the Mission District
Hey y'all,

Was gonna go to this event http://www.upout.com/sf/do/hip-hop-amp-ping-pong-american-tripps but got a message over FB that Facebook just bought the Secret Alley. Any ideas to what they're doing with this space?

MESSAGE:
"Alert! The Secret Alley has been purchased by Facebook and therefore will not be able to host our party. We're scrambling to find a replacement venue. An announcement will be made later today. Stay tuned!"
I'd be more interested if people outside the community -- people who don't have a stake in it -- would work on it, but for this discussion, whether it's bro science or not doesn't really matter, as long as it works for people. (Until someone discovers long-time ill effects, of course, but I'm not aware of that right now)

Although I do guess that the "sole true human diet" factor is contributing to the effectiveness, as people who accept that are more likely to stick with it.
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My takeaway, "Just Write. Go and Create Content. Stay Committed and you will surprise yourself at what you can accomplish."

The only thing I take issue with is the comment that the author has more than quiting smoking to show for it, he has 3 books.

as a former smoker, who hasnt smoked in 20 months, I can assure you that the struggle never ends, whereas once the book is finished, you can move to the next project.

I still rely on my 20 month chain once in a while to remind myself that I can do and continue doing the impossible... but the battle to quit smoking, is a constant one, and pays off for the rest of your life... the battle to write a few books is hardly comparable.
Not trolling and I take exception to the implication that my point is so worthless.

There are many parallels. As you point out the interviewee cornered in a room and find themselves attacked by one person after another. Most of the interviewers have the agenda to discredit and intimidate the interviewers whose looks or ethnicity they just don't like. If the person "looks cool" though then they go easy. It's hostile and confrontational and the interviewer is expected to take the abuse and not fight back or they are not demonstrating teamwork, where teamwork in many of these companies means being a passive beta that accepts abuse. Very different from talking one on one and having a chance to document one's competency.

Gang bang interviews are a form of violence, they are wrong, and they should be stopped. No one should defend gang bang interviews in tech. Or in any other fields, but gang bang interviews are prevalent in tech mostly, I've never seen the practice in any other field.
Yeah, and Dropbox fixed it after public complaint. It's amazing to me Google would launch with a license with the same problem.
For some startups, this leaves a chicken and egg problem. I've certainly been there with BidNear.Us. You can't afford to self-fund everything, you've got a mortgage to pay, and your product requires a critical mass, not just early adopters, to finish the sale.

I think if the product requires a crowd to complete a sale, it might make sense to crowdfund. What if those game developers on Kickstarter had tried to directly sell their games for $50 today with no working product for two years later without any proof that the game was funded and could exist. People would rightly call it a scam.