skysight-inc/HackerNews huggingface dataset:
First, let me say I think that estimates of cost savings over the European/Japan figures are ridiculous for anything at the ground level that moves a lot faster than state-of-the-art maglev or HSR.

A closed tunnel doesn't buy you much.

Mostly-evacuated tube, or at the very least some type of sealed hydraulic (which is problematic) is the obvious plausible idea to achieve supersonic speeds. The problem is structural engineering of a very large negative-pressure-sealed structure in which a fault anywhere could destroy the whole thing. It would need complex airlocks, which would make each station enormously expensive as well.

I would note, however, one of my ideas that may have some synchronicity: that the speed of sound in a gas rises rapidly as the molecule gets less massive, and the drag force drops as the gas becomes less dense. Simultaneously, if hydrogen cars are going to get off the ground they need a distribution pipeline system. A train that traveled in a tube of hydrogen could effectively bypass the 'air' speed of sound and move at at least mach 3 before reaching the H2-transonic range. Sealing STP hydrogen in a container can be done an order of magnitude easier than sealing vacuum or highly pressurized gas.

The "tracks", of course, would be some form of maglev. Ideally, an 'Inductrack' design, which have not been seen in use yet but offer substantial advantages. On the other hand, given the progess on high-temperature superconductor manufacturing, perhaps those advantages are shrinking.

On Googling, it would appear that I'm not the only one to have this notion:
http://www.supersonictubevehicle.com/docs/STV%20--%20Denizli...

I don't understand attempting to use a propeller-based primer mover, however. A linear induction motor with variable coil spacing, on a multiple unit train, should function just fine for this type of use.
you never "photoshop" a picture, right? -- I have to imagine there is an endless struggle between marketing and legal on these types of things
Just like http://dump.fm only for hackers! Could be pretty awesome!!!
It's true. I just wrote some NodeJS code iterating pins 000000 through 999999 and it got into my account. (If anyone wants the code...)
Competing on price - this is very low margin, even with negligible storage and bandwidth costs - when GitHub is already in the "dollar per repo" range seems like a good idea until you realize that your target market (poor students) might not want to give you anything.

I strongly recommend that you read the first of the Copy Hacks books: the one on messaging. Key is the insights on identifying the motivations of your users.

Best of luck!
What Start-ups Should Know About Hiring a Lawyer
Ask HN: Why are there more Windows exploits and vulnerabilities?
Are there more Windows exploits and vulnerabilities knows and documented because of the larger user base or because it is less 'secure' than Linux/OS-X?
A pair of FTL communication devices (jargon: ansible) can be arranged in a configuration which would allow the future to speak to the past, violating causality.
Open Source, Software Hygiene and STDs
There's much more information in the linked forum thread: http://www.s2ki.com/s2000/topic/975497-wait-that-isnt-an-f20...

For example, he also built a keyless entry system with an arduino board and an iPod. This kid is pretty amazing.
I'm sorry, but I just can't find any sort of citation stating that the Alcubierre drive violates any of these principles. I also can't find any mention of paradoxes incurred by the drive and there is only one mention of where the meta-materials themselves would have to violate the light speed limit. Here is how I understand it (and correct me if I'm wrong), but it is not travelling in a vacuum, it is crunching that vacuum in front and expanding it in the back. This doesn't violate any laws because we know our universe is actually already doing this (expanding at a greater than light speed). If what you say is true then the galaxies that are currently moving away from us at those "super-luminal" (not actual super-luminal because we all know that's impossible) speeds shouldn't exist, but we know these do exist and we know why they appear to be doing so. Because of the expansion of the universe. http://curious.astro.cornell.edu/question.php?number=575 So since this is already done naturally is it not feasible to do so artificially?

But aside from all that it seems a little short-sighted to howl about how people can't do something. Time and time again nay-sayers have been proven wrong.
What metrics do you want to use for purposes of this conversation? I.e. where do we look for vulnerability counts?
MySQL ssh tunnel
I've also heard (from MS lawyers) that it's only important to have this at the first point of display of the logo, such as installer or splash screen. Does not have to occur everywhere.
I find it completely hilarious that Marissa is not dogfooding. I know that someone else said this earlier in the thread, but why is this on Instagram and not flickr? Come on, at least use your own damn product.

The correct answer to the objection of "but Instagram is better right now" is "I'm going to revitalize this product by using it for my own photos and commentary, even if it sucks right now."

You don't want the CEO of a company giving mindshare to a competitor!
Looks like you're being hacked really bad. I got redirected to Google! It was fun to watch though! Add <iframe sandbox="allow-forms"> and you'll disable javascript. Good fast fix for now, later you'll want sandbox="allow-scripts allow-forms allow-same-origin"

The 4th allowed value for html5 iframe sandbox is allow-top-navigation, which allows a script to do window.top.location.href = 'http://google.com and redirect someone like me.
I don't recommend anyone visiting the demo page at work, it's not just the word "penis" getting spammed.
Apple iPhone 5, Lightning & Its Criticizers
The thing I used to hate about smalltalk was having to define the temporary vars at the top of the method/block. Now it just seems like a great idea which clarifies any sort of ambiguity like this.
I noticed this when I signed up with them, but don't consider it the end of the world -- when I switched my number from AT&T, is was obvious anybody who had a little of my personal information and phone number could have done the same thing.

However, I'm not sure it's the apocalypse on wheels. Plausible deniability is nice. Sometimes.

I find it more irritating how nearly everything on my phone is tied to a Google account.
Pass the eye bleach. I don't know what STD that was, but my god, you people...
Okey, thanks. I'll try it. If I feel that it ain't really for me I think I'll just write my own editor. :)
When you comment on a story, ask yourself this question: does my comment add value to the thread? If the answer isn't a definite "yes", consider modifying it until it does, or scrap it all together. It'll help keep the value of the conversation high.
Clipboard... an iPad/iPhone app for inspections. All documents you need to go walk around a property or things to look over all in one place (ie Docs, Photos, Notes) but with the flow of actual paper & the ability to just type over or write over anything on the clipboard.
I'm so tired of this quote. The Dalai Lama never said this.
http://thedamienzone.com/2011/10/12/dalai-lama-quote-on-face...
s2000 is a rwd car and likes to spin. this is not a trivial question.
Wow! This is news to me. Even mobile group didn't have people to do it. When every goddamn investor was pumping money into photo sharing apps. Flickr had the most popular photo-sharing app till 2008 and they missed the mobile tidal wave!
It's an absolute shame what's happening on your demo right now. This is bad.
Wait, is that a VGA connector I'm seeing? Seriously?
Why NC? It's overly restrictive and technically prohibits, say, distributing the papers on a website that has advertising revenue.
I think he intended it to mean, "some people are about to be fucked," as in "fucked over."
The best comparison I've seen was a graphic that showed how much VC capital had been invested in various U.S. markets into tech companies in 2009. I seem to remember SF/Bay was in the $10-12b range, NYC was second in the $4-5b range. Then Boston at $3-4b, and Chicago at $3b or so....with about 45% of that being one company, Groupon.
DOSArrest predates Cloudflare and does a fantastic job of DDOS mitigation. But they are not cheap.
Do you have a source for the 1 Tbps attack? I'd like to read about it, but my search came up empty-handed.
From http://www.uspto.gov/trademarks/basics/BasicFacts_with_corre...:

Owning a federal trademark registration provides a number of advantages, including... the ability to use the federal registration symbol.

Much like the copyright symbol, unnecessary.
The only thing I could think of was Ubuntu version 10.04. I doubt that explains it. I thought any variation on that (1.004, 10.04, 100.4) might have some significance in popular culture, like the 42 has, but didn't find anything.

I'm curious.
Scalability Limits of Network Simulators
and yep
If you're wondering why 1004, a seemingly random number, is so close to the top of the list -- something that the author does not investigate in any detail -- my guess is that the database he used contains some major leaks from Korea. 1004 is a fairly popular password there, because it is one of the few 4-digit numbers that sound like actual words in Korean. 1004 sounds like "angel" (cheonsa).

So if you're actually trying to break into people's accounts, it would be advantageous to know your victims' ethnicity. It's quite likely that cards stolen in Koreatown will have a different distribution of PIN numbers than those stolen in Chinatown.
E-science in health and the pharmaceutical industry
E-science is central in enabling many of the core processes in pharmaceutical R&D, from sequence analytics and target selection, high throughput chemical screening, ligand docking and protein structure characterisation, predictive safety model construction, drug metabolism modelling through to the molecular characterisation of disease states. To date, the scale of these analyses and the throughput of the assay technology has meant internal infrastructures have sufficed. However due to significant changes in the pharmaceutical R&D model and rapid advances in key assay technologies, to be competitive, the industry needs to consider alternative models.
Don't think of "people" as a static entity; that's the problem. HN does have something of an "eternal September" effect that everyone has to deal with, permanently.

There's a constant influx of new people, many of whom will learn to contribute more valuable commentary, but haven't learned yet.

It's discouraging, but easier to deal with if you recognize it for what it is.
Thanks. I find a lot of the Plan 9 stuff very fascinating, and I often think about what it would take to port some of the functionality to OSX.

I find it interesting that you mentioned the window management as being one of the big selling points. I have been working on a tiling window manager for OSX, and might try adding a mode like that. It would mean splitting my emacs into frames, which could be weird. Probably worth messing around with, though.

Also, I have several emacsclient based commands to do things like the plumber/acme, but is a pretty poor attempt at reimplementation.
Why so much anger?
WOW, that is tremendously effed.
An Open letter to TLC
"The battery pack will consist of 416 cells with 4 cells in parallel and 104 in series...The batteries will be A123 20Ah prismatic cells. " Approx 460 pounds just for the cells.[1]

___________

Notes:
http://www.a123systems.com/prismatic-cell-amp20.htm

~500g each (1.1 lb) based on a quick google [tbc]
Dog Trainer Nashville
Open source software also means that you won't be trapped with some dead-end software when the developer goes out of business or changes their business model.
You can find this level of discourse in plenty of topics every day. Programmers draw blood over indenting with tabs or spaces. It's geek entertainment.

I have never been upvoted so much on HN. I admit to strong opinions and light sarcasm but you'll have to show me where I've been uncivil, belittling or insulting, except perhaps in response to people who insulted me.
Errr, dude, do you work for Microsoft? This is what got them into trouble in the first place, believing their own B.S. Sorry about the M$ slam, but damn, I keep hearing this over and over again, and it's so damn wrong (IMHO).
A123 cells are about 180wh per kg, hes using 20ah 4 at 104 cells in series. so thats about 104 3.7 = 396 volts at 120ah. multiply that together you get 47kwh of energy. These batteries would be around 500lb.

These battery pricing must've came down a lot over the past couple years because this would've cost something like $40k couple years ago, but a quick google for pricing looks like the battery pack he is using can be bought for around $13k
pricing source: http://www.a123rc.com/goods-468-Excitingly+Powerful+A+123+20...
OMG, sorry I have a hard time telling when people are being sarcastic, haha good one!!!!
Virgin Mobile. Lose their V-card by switching to a different carrier.

Or better yet, I like this chick, so I hack into her Virgin Mobile account and track down her SMS correspondence to realize that she calls the local Pizza Hut a lot. So I show up at her door with a pizza before he usual time of call, and she says, "how do you know I like pizza?" And I say, "Baby, it's because I have a radar for chubby girls" and we eat pizza and make out with our greasy lips and do the deed. And later she says, "so how was it?" And I'd say "It was great, like a virgin." <eom>
The Pitfalls of Web Caches
The super short product life cycle of android is making me hesitate to buy one now because it always feel like the next generation is just around the corner.
CS is more than just syntactic sugar, but speaking in terms of syntax it has a more minimal mindset like Python or Ruby.

The difference between source and compiled code is much much closer. CS has been designed as a pure abstraction of JS, whereas those other projects take full-fledged languages with all of their idoms and features and make JS out of it. I agree that new syntax is a cost, and in general that we should fear abstractions. PyJS seems like it's more of a web framework (as is GWT) rather than a pure language compiler.

Python is a beautiful language, but just code in JS if you're working on the front end and are wary of CS. I'm a capable JS developer and it took me almost no time to get started with CS. Sure, you hit snags here and there with oddball situations and sometimes you have to check the output, but the benefits definitely outweigh the learning costs.
XOXO: crafty makers from the future
I have a fondness for geography and maps, so I am delighted to see this posted here. Big Think covered this back in February, 2011: http://bigthink.com/strange-maps/502-hung-out-to-dry-a-taxon....

The above article is part of Big Think's Strange Maps, a fantastic blog which has many, many more interesting articles!
It is interesting to see the different perspective on Apple/Samsung in the korean vs american press.
Thank you very much for this information. I was wondering.
Hardware is not dead: It's all about the product, not the technology
I work for a company that operates in the energy industry. We utilize both RDBMS and "NoSQL", both have their purposes that they fit in well. We store customer account and configuration data in Postgres, and use Cassandra to store time-series statistics and high write volume data.

I have a background in data warehousing in both Oracle and SQL Server, and was part of the decision to use a polyglot persistence model. I've got at least a decade's worth of experience in the DW world, and more as a general developer before that, so I like to think I've got a relatively credible background in a variety of data stores.

I haven't looked at Mongo much - it's durability concerns and the write lock stuff pushed me away from it early on (I don't mean to disparage it, but that was where it was at when I evaluated it), but Cassandra's configurable consistency levels and operational story at a cluster level are what sold us for our time-series data (that, and the ability to construct a sparse timeline and multiplex reads/writes). For anything we need flexible querying with, we push it into specialized Postgres dbs.

The level of willful ignorance and vitrol in this thread is kind of amazing. Most of the really experienced DW guys I know are all looking at HBase, Cassandra and others because they fit a niche that we've all been looking for in certain data sets at really large scale. It doesn't mean we're ditching our relational data stores, it just means we're augmenting them with other tools because they fit the job at hand. To suggest that one tool is absolutely perfect for every scenarios seems a little short-sighted to me, possibly driven out of inexperience. I don't mean that as an insult - I know a lot of guys who've been working on the same data sets for 30 years who really do just need the one tool - however, you've got to realize there are other data sets and problems for which your hammer just won't fit.
I may definitely be missing something here, but I find it difficult to believe not a single packet from that attack made it to their network or affected their operations. I understand how the amplifications were mitigated, but how do you distinguish between legitimate and illegitimate traffic and then block just the illegitimate?

I ran an MMO a while ago, and we would have a few hundred login packets spammed every minute. When we were DDoS'd, I responded by moving my server to a larger line (1 gbps) since the DDoS itself wasn't nearly as massive. Yet, we had no way of figuring out (at a base level) what was a legitimate packet.
I don't know. This isn't something covered by special relativity. You certainly don't need a wormhole though.

http://curious.astro.cornell.edu/question.php?number=575
Just for laughs I'd like to see a comparison consisting of one measure: average time elapsed between entering a coffee shop and hearing the words "startup," "iterate," "pivot," or "code/coding/ruby/rails" :)
If a trademark is challenged, it's often useful/necessary for a party to be able to show that they've been using the mark as a trademark in the past. Slapping TM all over your branding is one way to unambiguously meet that requirement.

That said, in almost all of the cases where a large organisation is using it with a well-known brand, it's more of a CYA than anything else.
Nokia Confirms Amazon Is Licensing Its 'Location Platform'
Microsoft confirms October 25 launch for Windows 8
I've made a one-time investment of a minuscule amount of time and have been raking in the saved time and effort from not having to type var statements or track down lack-of-var bugs.

Pure profit for me, but as always YMMV.
Too sad your site is beeing vandalized.
Please resubmit when the trolls have moved on.
500lbs in batteries and a quick search shows each of his motors is 156lbs. Since the gas motor he took out weighed 326lbs, he's got a net gain of ≈ 480lbs. That's a lot to overcome.
And why do banks (or credit card companies) even let users pick their own PIN codes? Wait, do not answer that, I know. Some beancounter has calculated that the cost of somebody guessing PIN is significantly less than cost of support calls when people forget their random PINs. Which kinda sucks that security is compromised to make more profit.

For reference I have (afaik fully random) bank-assigned PIN on my card.
Not anger, frustration mixed in with a very long day.
This is commonly referred to as the Osborne effect. Apple have a similar issue when the rumours of the next iPhone start making the rounds.

With Apple it's likely less of an issue considering they have an impressive profit margin on their products and a strong lock on their target market. If the recently announced iPhone doesn't sound too impressive the customers are still likely to buy it as they're unlikely to consider other alternatives as an interim.

[1] http://en.wikipedia.org/wiki/Osborne_effect
I've been trying to find a decent source for conflict-free diamonds

You can request Canadian diamonds at the jewelry store. My store had to overnight a collection in for us to look at, but it wasn't an issue for either of us.

Canada's diamond mines have labor and environmental standards to abide by and Canadian diamonds are laser inscribed with a goose logo and come with an extra certification being from Canada. De Beers does own 2 out of the 6 mines in Canada, but it does not have anything near a monopoly there.
I use Chromium over Firefox purely so I can open many tabs without having to scroll the tab bar. I use extensions to bind keys, block content, block scripts, etc. I realise these work better (and some only work) in Firefox. But the scrolling tab bar is a deal breaker.
Where is Pandora in the open graph?
They may have missed the tidal wave, but I was posting mobile photos on Flickr in 2005 :(

http://www.flickr.com/photos/spullara/2904629/in/photostream...
The link had a really interesting but unsatisfactory explanation, IMO. The way I am understanding it is as follows: Man A and Man B are traveling (with combined speed of 0.866c) away from each other. Because of time dilation, to A it appears that B's clock is twice slower (1/sqrt(1 - 0.866^2) == 2). Then A shoots from some sort of weird space gun whose bullet is instantaneous. The bullet passes B at 4 seconds (relative to B). B notices that and shoots back, and B's bullet, due to equivalent effect hits A at 6 seconds causing a dead grandfather paradox.

However what I don't understand is this -- to say that the bullet shot by A passes B at 4 seconds presumes that we are talking about A's frame of reference (because it is from A's point of view that B is 4 seconds "behind" -- and likewise A is 4 seconds behind from B's perspective). However, what if, from B's frame of reference, A's bullet actually passes B at 0 seconds?
ParenthesEs is the plural, parenthesIs is the singular.

Normally I don't do the spelling/grammar thing, but it was consistently wrong in the article, and at least a half dozen comments here were getting it wrong, too, so I figured a public service announcement was in order.
and here we gooooo
Tax Cuts Don't Lead to Economic Growth, a New 65-Year Study Finds
no just not mobile ....i was asking about more niche market places
I think this is fantastic.

Clearly you've thought this through, and don't use eye candy frivolously; but rather use it for a purpose. This is a perfect example of design done right, and what can come out of a job when practical considerations are kept in check, and when the design is thought through thoroughly. TripIt would be crazy to not try to snatch you up on the spot—hell, any company should. If you're looking for a gig, shoot me an email!
Ankit Fadia is a fraudster.

http://attrition.org/errata/charlatan/ankit_fadia/
Correct. :) I have no tears to shed for this problem. Netflix in 2010:

"Setting aside the debate around the value of content protection and DRM, they are requirements we must fulfill in order to obtain content from major studios for our subscribers to enjoy."

If Netflix was that important to desktop linux users, the distros would have coaxed a Silverlight implementation from MS or worked on the HAL-Flash schism or done SOMETHING to enable video streaming services to do their legal duty to their content providers. They didn't, no Netflix for you. Hardware DRM assistance is helpful, but clearly not required.
Yes, with Apple, arleast you know you've got their 'latest and greatest' for an entire year (and it will take Apple two years to launch a new model). To already see the Galaxy 3 now makes the 2 feel like yesterday's toy. The timing of this news suggests they're trying to attrack iphone buyers, but the overall feeling I get is they envy Apple. (Also because Samsung feels the need to compare their phone with the new iphone).
Buzzinar Mentoring and Your Business