skysight-inc/HackerNews huggingface dataset:
The problem with these advanced technologies is two fold

1. it requires a large amount of hydrogen - which is not heavy so it looks good on paper but is very cold and voluminous, meaning you need huge insulated tanks. They are expensive to build, have bad mass fraction and are aerodynamically problematic. Hydrogen is also expensive to handle in systems and infrastructure.

2. the dry mass of an air breathing engine sucks because they process gases (rockets process liquids with 1000x density), though SABRE is better than stuff like scramjets. This is especially bad for an SSTO like they are proposing since you carry the inlets and precoolers and all that all the way to orbit.

My bet for cheap spaceflight would be a two stage kerosene-oxygen rocket. A SABRE engine might make a great first stage but I doubt if you would want to carry it to orbit. I haven't performed much calculations though.
Agreed. I don't think it has been vetted nearly enough either. It seems like a lot of people are jumping on the bandwagon and will soon find their stuff not working.

Don't get me wrong, I love bootstrap, but I'm not sure people really see it as a start-up framework as opposed to a full featured, vetted, well thought out framework ready for prime time.
Quick, anyone know when Windows 9 comes out?
It is an ambiguous thing because Bootstrap is not usually treated as a library, but rather as project scaffolding. That is, it's used to start a project, rather than enhance a currently built project. This is not necessary, of course, as Bootstrap is really a set of adjunct resources that can be pulled into your pages as necessary.

The major problem you see with this useage is that people start a project with Bootstrap 1.2, and 2.0 comes out, there's no chance in hell that they upgrade. Partly this is ignorance, partly this is because there is still no good package manager for the open web - and that's not for lack of coding chops, but because, IMHO, we're still not really sure what "package manager for the open web" should mean.

A page as an execution environment is both incredibly rich and incredibly risky. As much as the web itself is a wild-west of innovation, so is the page environment. We can pull scripts, images, css, data and even DOM from around the world. And for the most part we still do it by adding a line in the page and, if we want a local copy, a wget. The only reason resources don't step on each other is luck and convention - usually it's mostly luck (although the "single global object per library" convention for javascript seems to work really really well.)

It's time that coders and designers both start to think of CSS as reactive functions that map from DOM to pixels and are invoked with class names and ids (this is a lot different than their intended uses, but let's face it, semantic markup doesn't really meet any real human need). Perhaps, echoing the success of the javascript convention, we should adopt a convention that lets css libraries to exist within a single, top-level selector.

Projects like Meteor, Derby and AngularJS are a good push in the right direction, but there's still a long ways to go I think.
An undergraduate degree in business isn't that useful by itself. An engineering degree will buy you a lot more credibility down the line, no matter what you end up doing. But the real money isn't in being an engineer--it's in finance, operations, and strategic management. So the MBA is still crucial--it allows you to transition between the two domains.
During their hiring explosion, I had a hunch that I shouldn't have gone forward with an interview there. I think I made a good decision...

Something in my gut just said "who cares?" about the work. I couldn't get a straight answer on what I'd be building or why I should believe they would keep growing.
I'm doing a machine-learning project for my company (Sauce Labs) and decided to give Ramp a try. Despite some effort put into understanding the API and digging into code to ensure I was passing in all the right kinds of parameters when I hit random errors, I think it was worth it. I was able to test and compare 20 different machine learning algorithms and even more feature sets really easily. I'd definitely recommend checking it out!
Fascinating.

I'm clearly guilty of believing left Black Holes are like plug-holes in the centre of galaxies and eventually everything will swirl down them.

So this isn't a valid picture? Do you have a more realistic one for me instead to think about?
"Hands down the people who are most concerned about this trend are the angel investors."

Wrong. This is not an investor's problem. This is an entrepreneur's problem. The angels and VCs will shake this off as all of the combined seed dollars invested over the past couple of years are a relative fart in the wind compared to the greater startup investing arena, which doesn't become really capital-intensive until at least the Series A, and more often Series B stages.

It's the entrepreneurs who are (or at least should be) most concerned. Not the investors.

Edit: here's some cold, hard stats on the Seed VC phenomenon witnessed as of late: https://www.cbinsights.com/blog/venture-capital/seed-investm.... Seed investing continues to be a very real, growing trend, and yes - many startups will be left in the dust come Series A time.
Dishonesty is not more preferable than incompetence.
I don't see any reason for the doom and gloom here.
Series A funding isn't a lottery with a random 1 in 5 chance. The 80% of companies struggling to raise Series A are the ones without meaningful revenue or user traction. Why do they deserve to get funded?

A $1M seed round should be more than enough to get a SaaS business cash flow positive or get a consumer product to a meaningful user base. If you have failed to get there on a seed round, the answer isn't "give me more money", it's "the market is telling you to try something else".

$1M can be 2 years of runway. That's a long time to figure out what you need to do to get to product-market fit.

Most successful businesses don't have anywhere near that level of funding and are still able to make money on more constrained resources.
Just a question, since my knowledge on this subject is very, very limited, but is it possible that the syntactic changes could be accounted for by a single parameter?

From what I recall, _The Atoms of Language_ makes the case that English went from SOV to SVO because a style in which very short sentences could be uttered in SVO arose and became popular, and within a fairly short period of time the L1 learners of English were mostly hearing SVO during their early years, so as they matured the head directionality parameter was set contrary to their parents. As I recall the book had some evidence to support this, but I can't speak to the quality of it. I'm also not sure how that would work with the antisymmetry proposal (which nicely explains other phenomena).
It's ironic, that in the comments section of the article it says: Comment using... Facebook. Some other obscure options aren't helpful either. Why can't one comment using Mozilla Persona or OpenID? If someone is criticizing Facebook (very reasonably), but at the same time requires Facebook to comment, it sounds hypocritical in the least.

More on the subj itself - I'm not sure really what the author expected from FB. They don't care about users' privacy - period. I.e. they don't respect their users. If you don't appreciate it - quit using Facebook and use privacy respecting social networks.
That's not really a solution.

The problem falls into two categories, on one hand you have non technical end users,
and it takes a non trivial amount of time to train them to roll their own crypto if
you will, and it's also hard to convince them it's worth it (This is a fair point, as
security is a cost/benefit between ease of use and not getting caught with your ass in
the wind).

On the other hand, you have companies using outsourced services, and with SaaS/PaaS/aa
becoming all the rage, it's very important in my opinion that those service providers
shoulder some of the responsibility to not let their users, serve their users etc in
a manner that's not conducive to security/privacy etc...

Punting this problem up the stack, with it most often ending on the end users desks,
is IMNHO a bad idea, since then, as it is now all those good things crypto promises
are the exception, rather then the norm.

This is obviously much much much more complicated in practice, but I at least see this
problem reflected in the "to the cloud!" mentality.

EDIT: Complete rewrite.
That's exactly what we did with voteforchange in 08. Scott Thomas and Chris Hughes were the brilliant team behind that. Then they went back to a one page form, like the only thing good about voteforchange was that you could make it cutesy and brand it really easily for lots of different demographic groups and not the shit tons of UI research and optimization that went into creating the shortest possible path for the registrant, collecting partial data, saving application state, etc.
Realistically it's probably <0.01% of users.
WebTCP: Making TCP Connections From Browser
Mathematica is also by far the easiest language for solving Project Euler problems. There's almost a function call for each problem. It feels far too much like cheating but it's a good way to learn the language.
FB's mistake was to even propose this voting scheme...I would think of all entities, they would be the first to know firsthand the worthlessness of quantity. How many users in the last week posted that stupid legal notice asserting rights over their content?

The real truth is that users in general have little concept of what they're giving over to Facebook. And even if FB made it dead easy to understand their TOS, the majority of FB users would still be clueless.

IIRC, one of the biggest controversies in FB's history was when it implemented the newsfeed. Apparently, users thought that if something was easier to find (i.e. not having to visit each person's page to see their latest activity), a sacrosanct privacy line had been crossed. And this was back when FB was mostly college students who, you know, are supposed to be in a state of constant learning and reading.

The news feed was FB's killer feature back then (compared to MySpace) and if it had been put to a vote, users would have undoubtedly quashed it. Is it any wonder why FB will never take users' concerns seriously?

To go back to the sham-legal-status-update thing that was being posted...it's just kind of sad that at this stage of the Information Age, the average person is still too lazy/too entitled/too dumb to look things up and think for themselves. FB may not be the "good guy" but to rehash the old Batman cliche, it seems to be the social network we deserve.
IMHO, no modern JS developer should ever need to create a blocking alert or prompt; the reason the native alert or prompt functions block is because, well, they are not designed for what the web is today.
I'm not sure, but I think you're confusing split infinitives with split verbs. Split infinitives are definitely a schoolmarm invention (borrowed from Latin, where the infinitive is an inflection and thus inseparable). I think split verbs are here referring to the possibility of separating verbal auxiliaries from their verb.
Who are you using for messaging? When I registered this morning (in Australia), each message was sent to me twice. First from BulkSMS and then from an Australian mobile (cell) number.

There wasn't too much of a delay however (less then 1 minute)
there is also deamhost and dreamcompute.
Honest question, why daily deals sites are imploding all of a sudden?
Maybe Hungry Academy wasn't such a good idea after all...
When I read your other posts they came across as mean, arrogant, and holier-than-thou. This could be a limitation of the written word and my emotional projections onto it, it could be an accurate perception and a lack of self-awareness on your part, or it could be a mixture of both. My vote is for both. I'm willing to believe you thought and felt you were writing in jest and in mirth and were not trying to be cruel, but I'm saying it didn't come off that way to me and what seems like a few others.

I would go through and highlight each sentence that reads as mean or belittling in some way, but it's literally every sentence, usually multiple times. (Except here, where you're being polite but defensive, which makes sense since I did criticize your actions.)

At the very least, please just try to understand that telling someone that their words are "not the mark of a solid education" is abusive.
This is HN. You can say "Would the economy be better off without %s?"
Hey everyone! Eavesdrop dev here; we built this for NodeKO and decided to keep it going.
Have you actually used any of the products you are talking about? You don't take the filesystem snapshots on the virtual machine, but of the disk image on the host, typically using LVM or something similar. What you want to do with this snapshot later on is up to you, normally people just export it to a remote location.

For total system failures you still need a proper backup solution on the machine. This is true even if it's dedicated hardware or a virtual machine.

You seem to always resort to talking about databases, and this might be true for huge centralized databases, but that is a pretty damn specific task. Also, I thought we were past the "put everything on one box"-model.

The complexity you talk about is just not there. It acts and feels just like a normal machine, and you have yet to provide any data that would support your claim, even for edge cases.

Something worth reading: http://en.wikipedia.org/wiki/X86_virtualization#Hardware_ass...
Yeah? Like who?
"I would have also expected them to ease up on the anti-piracy measures"

Are there any specific anti-piracy measures you're referring to, or just the presence of them?
OK so I can see how it violates standards. How many of the millions of users that send traffic through EC2 does this affect however? I can see how they would be reluctant to mess with Firewall rulesets. Even if it they only apply it to new users that would mean fragmentation ... Keep it simple stupid. Again it depends on how many users this affects and from the sounds of the blog post - vanishingly few
They didn't drop dramatically, they flattened, or reverted to the mean after a decade of excessive growth based on the real estate bubble. This graph is from budget summary:

http://i.imgur.com/Zvjbw.jpg

If there was one iota of spending restraint in the lead up to the recession, California wouldn't be in a crisis.
The precooler / heat exchanger is the SABRE's distinction. Ramjets and scramjets don't have such. It enables low internal gas velocity and small compressors and more thrust from a smaller engine and higher top speed than jets.

It's like saying when the Wankel was invented that "it's just another internal combustion engine". Sure, it is, but it's quite different from most of the others.
Speaking as someone who does his fair share of dimensional modeling, I would just point out that the example you cite could only involve two tables in a well designed dimensional model (sales fact and time/date dimension, I reckon). The challenge is in getting to that point.

To speak to OPs point about difficulty in querying data warehouses, most business intelligence tools that I'm aware of provide semantic layer[1]-type capabilities, whereby the user interface of the tool is presented in the language of the business domain. Nevertheless, I still agree that this is still difficult work, unfortunately. That it is getting more complicated in some respects, such as through unstructured data, doesn't help either.

[1] http://en.wikipedia.org/wiki/Semantic_layer
Lots of people may consume Porn but only a small subset of that group might be interested in creating Porn.
The arduino guys have drawn a pretty good line in my opinion. They've allowed various clone to be similarly named as a sort of homage but smartduino is crossing a line in my opinion.
django-grappelli is very nice. However, something like Bootstrap has a lot more going for it in terms of a ecosystem, which would be a really nice side effect if it was brought into Django.
All told, I think rating songs in your library is a really personal thing.

@JimEngland, you use stars purely as an organizational tool, which is slick. It's cool that the iTunes interface extends it self to different uses.

@tkahnoski and @zeedog, how would you elegantly expose controls for those different feelings?
And if the Obama campaign were making the same offer, which would you choose?

The campaign may have relied mostly on volunteers, but it would be foolish to think they wouldn't hire a small team of engineers to do the same work if they had to. The benefits to fundraising alone are substantial enough to warrant the cost.
Not UNIX but VMS. At an old job, we had a central VAX server running VMS. It had an uptime of almost 6 years. I was there when they had to reboot it and it was this big major event.

The sysadmin, who had been hired long before me, started after the last time it was rebooted, so he was visibly sweating. Everything came right back up.
I was on an fda list like this, and everytime someone messed it up 40+ people would reply-all with "I think you sent this to the wrong person".
Everything About eBooks & eReaders, Pt 1: Introduction
Here's why Elon Musk is more likely to be right: because fuel is cheap.

The cost of fuel and the cost of fuel tanks is an insignificant part of the cost of an orbital launch, around the 1% level. The major drivers of cost are overall system complexity and manufacturing cost of the engines. And here's the big problem for a Skylon spaceplane, rockets are fairly simple systems whereas hypersonic airbreathing engines are extraordinarily complex and difficult. And if you can manage reusability on your launcher then the ordinary rocket engine wins hands down.

The reason why the jet engine won out over the propeller in civil aviation is not because of the higher thrust or better performance of the jet, it's because of lower operational costs. A jet powered aircraft requires less maintenance per passenger-mile than a propeller driven aircraft does. Partly this is because, despite the design complexities involved, a jet engine is actually a much simpler system.

The idea of not having to haul up a full load of oxidizer on an orbital launcher is a tempting one, but it doesn't come easy. One of the big advantages of a rocket is that it can push up above the bulk of the atmosphere when it's still traveling fairly slowly and do most of its accelerating in a near-vacuum. This reduces aerodynamic drag, aerodynamic heating, and dynamic pressure forces. All of which are some of the most pernicious problems to deal with in a launch vehicle. No few launch vehicles have been lost just as they reach "max-Q" (the moment of maximum dynamic pressure), and for an air breathing launcher it would likely be forced to fly through even more severe aerodynamic regimes than most rockets for significantly longer periods of time. This is hard on the vehicle design, hard on airframe longevity, hard on the thermal protection systems, and hard on the whole vehicle in general.

So on the one hand you have a vehicle which requires significantly more robust engineering and significantly more complex engines and overall design while probably having a shorter total service life. And is perhaps some significant factor riskier to fly in general. And on the other hand you have dead simple basically 60 year old engineering that is just put together sensibly, flown within a familiar flight envelope in a way that minimizes risk and iteratively improved to continuously shave off operating costs. It's a pretty safe bet which one is more likely to actually lead to lower launch costs.
web10 ~> uptime
2:33pm up 1924 days 13:36, 1 user, load average: 0.39, 0.27, 0.16

web10 ~> cat /etc/issue

Welcome to SuSE Linux 9.3 (x86-64) - Kernel
Because they all copy each other
It's also possible (more likely?) that life on any nearby planet discovered would just be a failed attempt of our own. If this is the case, then its discovery would actually be good news, it would mean we can continue in the face of catastrophe. I don't think the author touches on that.

We already know of at least one catastrophe we are rebuilding from, there's also no reason to think we weren't already rebuilding from earlier (possibly much larger) catastrophes.

Following this, there's nothing to say that we haven't already had some major effect on our surroundings (intentional or not) in some previous, possibly more complex or larger-scale growth. Our influence on our surroundings could be huge. Lack of life or anything that seems anomalous in our immediate vicinity could be our own doing. A seeming lack of evidence for this might be explained by scale, or the nature of the catastrophe, or (if it was intentional) by design.
Speak of the PMTU ... http://www.daemonology.net/blog/2012-11-28-broken-EC2-firewa... :-)

Another interesting thing is that your connection is negotiating the use of TLS 1.1. If you have some type of man-in-the-middle box or stateful firewall, it may be getting upset by that.

A full packet capture would be useful here.
I still wonder about the daily-deal business model. The premise that loss-leading discounts will spark increased retail-price customers is losing its believability. In my circle I've never heard a business referred to as "that place I found on Groupon" -- I've really only seen it used as a marketplace for deep discounts on one-time (or nearly one-time) purchases. A groupon for skydiving or a guided tour? It doesn't make any sense.

For the businesses fueling daily deals, the cost of customer acquisition skyrockets. For customers getting the deal, returning to the business to pay full price is hard to swallow. It's going to take some real business intelligence to turn these daily deal companies around.

That said, my heart goes out to the 400+ employees looking at lose their jobs before Christmas. That sucks, a lot.
Maybe the fact that this company created it wasn't optimal, but I still think it's a very solid idea.
From the RFC quoted :

"A packet-filtering router acting as a firewall which permits outgoing IP packets with the Don't Fragment (DF) bit set MUST NOT block incoming ICMP Destination Unreachable / Fragmentation Needed errors sent in response to the outbound packets from reaching hosts inside the firewall, as this would break the standards-compliant usage of Path MTU discovery by hosts generating legitimate traffic. "

That would be great, next tell the folks at SBCGlobal to fix their damn network as well. I don't know how many folks we've had to 'patch' by manually walking the MTU down on the local router until packets actually get through. It really really sucks and leads to sending way more small packets than needed.
Google Compute Engine vs Amazon EC2 vs Heroku
What are the best IAAS options today? Pricing, features, flexibility, ease of use, etc.

I am looking at launching a multi-node Node web app with a NoSQL backend and am trying to get a better feel for the space
Well, bootstrap-rails is on the list. I was going to add it Meteor in under Frameworks > Javascript.

I hear what you are saying though, where do you draw the line. What would you suggest?
Great work!

I've been using apprise (http://thrivingkings.com/read/Apprise-The-attractive-alert-a...), which is pretty good, but going to switch to this. I really like how Alertify has the growl-like log alerts along with it.
Can you elaborate on why that is?
For those in search of a FOSS alternative, give Mathics a try: www.mathics.org

In the past couple of months, Mathics had made quite a lot of progress.In particular the upcoming release will run on PyPy. Obviously it still had lots of catching up to do, but being written in python (and some Mathematica) makes development easy and fast. Come join us!

Disclaimer: Mathics vice dictator here