skysight-inc/HackerNews huggingface dataset:
Ask HN: How do I choose between 2 startup accelerators?
I have applied to 3 different accelerators and got accepted to 2 and I'm quite close to being accepted into the 3rd. I decided against going with the first one (multiple reasons).

The 2nd one is http://www.axelspringerplugandplay.com/ . Axel Springer is this huge publishing house (the largest in Europe), they have numerous big newspapers (Bild, for example). I'd spend 3 months in Berlin working in their office along with other startups. 25k EUR for 5% equity. Demo day. They recruited in Berlin and Krakow (application -> short pitching & Q&A), so I guess most of the participants will speak German. They started a year ago.

The third is http://startupsauna.com/ . Their recruitment process was much cooler, it involved a few hours of 1 on 1 coaching sessions with 6 mentors. It's 1 month, more business oriented (no time to work on a product) and no money/equity involved (they're a non-profit). They said there's a 10k EUR convertible note along with a 30k grant from Finnish govt. The program ends with a demo day they organise at the Slush conf. They started in 2012.

Both offer mentoring, workshops, all the good stuff. Same with a trip to the Valley for the most promising alumni.

My story: mobile app(s), quite a bit of traction (over 1M downloads), pretty solid plans for rapid and rather inexpensive growth. Enough revenue to support my family, but at least a few months away from that growth. Also need 2-3 people for that (have specific people in mind, Axel Springer's money would make it possible).

This is all I know. I don't have any tools at my disposal to evaluate those two programs. I can't compare mentors, alumni or investor pitching potential.
* what's your general opinion based on what you just read?
* what questions would you ask the before deciding?
* if you know anything about either one of those, please share!
* are there some websites that would make the comparison easier for me?
Physicists develop a real invisibility cloak
Original Google's inspiration for reference:

http://metroui.org.ua/

http://aozora.github.io/bootmetro/docs/docs-index.html
No it isn't. A btree is a structure specially optimised to minimise the number of pages that need to be loaded to traverse the tree. I'm sure Google will find you some good details but basically every node has as many children as can be fitted in a disk block. The linear time search within the node is faster than additional page missed that a log(n) descent of a binary tree would be. Details may be wrong it has been 15 years since my algorithms course and I've never implemented a Btree although everyone has probably used thousands of them in databases and file systems.
Moments Matter: Marvelous Mystery Man Makes Movements, Moves Markets, Multiplies Millions. Maybe.
In a few countries they will give you a flat fee as long as you are unemployed (UK) but in others it's linked to your previous salary and only for a short time (Spain and Germany). Others I don't know much about.
It's [B-Tree](http://en.wikipedia.org/wiki/B-tree) - a generalization of binary search tree.
That was a nice critical reading on your side. For me the article basically points out that they used email for some kind of project planning and of course there are better way to do this. For urgent stuff something like internal IM and for other stuff email isn't that bad.
Not if you shift the taxes around so that, on average, the amount of money in the system remains similar.
Well, Nippon is better than Japan, but still not good enough. Minamoto is too specific. We will have to live with this.
Not necessarily. Prices might rise because minimum wage labor gets more expensive (competing with BI) but excess profits will get sucked out of the system fast by competition.
You're not thinking in the grand scheme. The shift from full employment towards (idealistically) full automation requires drastic paradigm shifts in how we view economics.

Just try to contemplate this question: what would a society, an economy look like if everyone was provided with everything for their basic needs, like a house or a flat, food and an "allowance" to participate in social activity, people could still be able to choose to work if they wanted to, but not working would not be frowned upon? How would this society develop, what would people do because they can do what they please all day, what would the influence on society's creativity and inventiveness be?

"Basic income would negatively affect our current economic system" is not the right answer to that question. Automation will not become less, full employment will be less and less feasible, so answering these questions will be inevitable.
I'm the developer of this project, my portfolio is built on top of it and I think matches Google material design guidelines. www.mywebexpression.com
But day trading is gambling. Also degenerates don't make money.
Ask HN: Setting up License Servers
Hi,

I'm about to launch a new application - Obviously I don't want it to be pirated. It's also pretty data heavy - so I do not want to build a webservice that will take more time to haul around the data than processing it.

So my question is this:

How can I ensure it's not going to end up being shared. I'm not sure it's strictly possible to do this but I want to ensure that it is very difficult to use a cracked/pirated copy. The only thing I can think of is to set up a licence server as is done in online games like Starcraft that the application will constantly talk to. Any pointers you guys might suggest on how to go about setting this up would be very welcome... (books, links to pages explaining this stuff...)

thanks all...

ps: I have some ideas about doing some of the computations on the server side but it is a pretty lame solution just to prevent people not licensing it...

ps2: obviously I'd welcome any other solution besides the server-talk approach...

ps3: is there a company/startup for this ? I'd be willing to pay for an API that has a good repuatation and I can set up easily for this...
My project is just a 1:1 conversion from Polymer Paper project to Bootstrap. It's still in early developement but I'm sure it will become much better in future :)
You haven't said anything about the kid being interested in programming, so I'm not sure IntelliJ is going to be of any use. It's a very heavy tool, perhaps too much for anyone just starting to learn how to program.
Buttons by default have not shadows if not on hover, to add shadows you have to add the class "btn-raised" and if you don't want them to have a shadow on hover add "btn-flat"
3. The ones who use inside information.
Start reducing births. Humans are THE worst thing for the environment. No reason to have more of them.
There's not mobile support at the moment.
but he makes money doesn't he?

Anyways can you throw in some valuable quant-related resources?
I know, it's kinda bugged since I've edited the size of the input fields, will fix it soon ;)
And those has been added back in AVX512BW.
The Woman Who Saved Mongolia's Dinosaurs
Curiosity Rover finds round 'ball' on Martian surface
https://twitter.com/puellavulnerata/status/51493095458276966...
Switzerland too. (~80% previous salary)
Alternatives to transportation by car in general should see a revival, it is quite sad that the state of public transport in the 1920's was generally quite a bit better than it is today. For example Berlin used to have one of the largest tram line systems, that also had freight trams. Early industrial cities in general tend to have a much better transportation system until today. As long as the lower classes were not able to buy a car, it was actually in the interest of industrialists to pressure for investments in public infrastructure, so their workers had an efficient commute.

Now that the car industry plays a less significant role in some of the (post) industrial countries maybe there is hope to boost other forms of transportation.
CloudFormation, HTML and virtual infrastructure
I do not doubt the usefulness of JS, but...

so many blogs I've seen that require JS, when all they serve is text content...
Shellshock – am I vulnerable?
If I have a VPS and just connect to it using SSH - am I vulnerable ?

or am I vulnerable through my home router ? I have no idea about the firmware on it. Is it possible that shellshock might have an effect on it ?

in short - what sort of use cases I should worry about ? I have not seen anybody explaining possible attack vectors about this thing yet... anybody have an idea ?
The admin user don't necessarily have to inherit from the common user. They can extend the same base class or implement the same interface. Afaik LSP doesn't say anything about the abstract methods(it doesn't make sense to call them on the base class anyway). So you put the common methods(e.g. getName) in the base class, you won't break those in the different roles, and make the role dependent methods abstract.
From your generalisation we can then say that LTCM falls under "Quants", and Warren Buffet under "Gamblers".
Yeah, good call. Some other posters mentioned it too. I'll look into something a bit easier.
I'd definitely be interested in talking further, tweet me @chriscbourke - I've been toying with a few ideas for a curated marketplace for international orders, i'll run them by you if you're interested!
Just to reiterate, this is an excellent article, even if it is chilling.

It's funny, you wouldn't think, even 20 years ago, that this sort of stuff could still happen. But humans are still human, and the sea is still the sea.
"The system" doesn't give jobs. _You_ give jobs.
Devil's Tower (2014)
> but in others it's linked to your previous salary and only for a short time (Spain and Germany)

That's the unemployment benefit but if / after you're not entitled to that, you get different benefits. In Germany it's 382 EUR + housing and healthcare expenses according to wiki.
Varsity Blood (2014)
Is there any work on using online methods to optimize tenure threshold for a given workload? (E.g., system notices that similar objects are being repeatedly tenured and then die shortky after, adjusts the threshold to keep them in the nursery.)
Announcing Our iOS 8 Support with Appcelerator SDK/Studio 3.4.0 Release
The average business fails to provide staff the autonomy they need to be productive. Articles like this don't help one bit.

I need a couple of hours of peace/alone time every day to focus on the important parts of my work. I'm lucky enough that my work is ok with me going to the local coffee shop for hours at a time. Most workplaces aren't. They claim to care about results but take such a short term view.

Don't evaluate me on my daily performance or the number of story points I have completed this sprint. Look at my performance month to month and year to year.

Of course some places have such high turnover (20%+) that they can't evaluate on a year to year because people aren't around for long enough but they have bigger issues.
Ask HN: Relational Databases and Concepts
Hi,

I have never really dived into databases a lot, apart from some contact to SQL (wrote some select statements to extract some data, etc.) but I never fundamentally got into theory or on a conceptual level, i.e. an SQL database to me was just a set of tables that were kind of unhandy to work with.

Until recently, when I touched Databases again (using Python SQLAlchemy's query language [not the ORM]). For the first time I was really exposed to the foreign-key concepts etc. and I think I saw quite some parallels to declarative languages such as Prolog, etc.

All of the sudden I am eager to learn some more on the relational database concepts and I wonder where to find good material on that. Unluckily a lot of stuff I found on the web is in-the-trenches tutorials or get-yourself-started-with-php-mysql.

I am especially interested in

- design of good database schemas
- refactoring of database schemas
- best practices
- conceptional treatment of database operations and their relation to logical/declarative programming languages such as prolog.

I would very much appreaciate any input on this.
It's certainly bash's fault!

First, and foremost: user-provided data has been passed in environment variables since the stone-age. That's why, for example, we explicitly guard against LD_PRELOAD'ing a shared library into a suid-binary... But it was common knowledge, that this selection of dangerous/benign variables can be made based on the NAME of the variable, NOT the CONTENT. And bash basically calls eval(name+' '+env[name]) for every variable containing the magic substring.

Imagine any of your other favourite script languages scanning random places for "things that look as if they could be imported/included/executed"... and tell me that this is a smart thing to do.

The second mistake was to not just create a function-definition inside the currently running program, but to actually eval the complete content of the variable. If bash would just postpone the evaluation of the function to the point in time where it's actually called, no one would be bothered, because the script would have to be tricked into executing a command called "RECIPIENT" (or DHCP_OPTION_1234, or COOKIE, ...).
Well, that's a silly question. The answer is simple: "change the system."

There are enough parameters in "the system" that we should be able to change almost any single one of them and get some improvement in employment numbers. Change wages, change education levels, change the scale of industrialization, change the number of humans working, change laws surrounding mergers/acquisitions, etc.

The real struggle here is getting anyone to do any of these things consistently, and then measuring the results.
In Brian Greene's book "Fabrics of the Universe" he also mentioned some other experiments that completely shattered our understanding of reality. One such was the quantum eraser and especially delayed choice quantum eraser, which COULD mean causality can be violated.

http://en.wikipedia.org/wiki/Quantum_eraser_experiment

http://en.wikipedia.org/wiki/Delayed_choice_quantum_eraser
Its also what forms the heart of OpenSCAD, which is built ontop of OpenCascade
Scandinavia at the time (and a few centuries after) was a violent clan society. War, raids etc were what people did instead of playing football and ice hockey. And business.

The trips to (e.g.) England were business, it is documented that boats were recruited from all over Scandinavia.

The "real" Europe at the time had [to a large part] gone on beyond that stage [of clan societies].

What to learn from this is not to be neighbour with violent clan societies. Think old Scandinavia or in the present day -- Afghanistan, Somalia and eastern Iraq.

(Incidentally, Sweden has the world's largest refugee immigration per capita from exactly those places... We will see how that ends up.)

Edit: I guess the down votes are my parallel with modern clan societies? Time will tell, I hope I'm wrong.
This feels right for the most part.
I like the Google Drive approach but am a bit disappointed, that I cannot view my data there. This would be data export by default and thus awesome.

Export is really important to me to feel safe. Also I'd like to know the business model, which I assume is freemium.
The preview has no undo, and ctrl+a and del is one of the first things I did. It works in the app though.

Maybe, you could implement some kind of incremental ctrl+a, so that it first only selects the item you're in - though there are already other shortcuts for that.

Long texts will be broken up into multiple list items each time you use enter. I am not sure, if that can lead to problems later on. So far it does not.

Very well executed, including apps for iOS and Android.
Here [1] is a map outlining Viking expansion / settlemenets.

Note England, coast of Ireland, Normandy, Southern Italy, the Baltics, Russia. Of these, you may argue that South/South-Western England and Southern Italy was Normans, who, while they had substantial viking ancestry were not all of Scandinavian origin, but the idea that they did not invade and conquer and settle is nonsense.

Certainly they did carry out attacks where the intent was just to pillage too, but they went much further.

[1] http://en.wikipedia.org/wiki/Vikings#mediaviewer/File:Viking...
After using a HealthKit enabled exercise app and contemplating the potential benefits from HealthKit enabled gadgets, I am beginning to think the direction that Tim Cook is taking Apple may be superior to the one Jobs would have taken it in. Jobs probably would have made better gadgets, but Tim may end up making a better world.

I could definitely see Cook et al. winning the Nobel prize in medicine in 5-10 years if HealthKit catches on.
OpenSCAD can generate either stl or wavefront obj (and several other formats), there are a lot of trivialy integratable tools that can go from there to gcode. Slic3r and CuraEngine to name but two.
"he owns two apartment buildings, the larger of which—a modernist cube in central Tokyo with a French bar on the ground floor"

Hmm, that information seems a little too identifying.
Apps to Watch: Checky, Fostr, Carddi and Others
> Buy stocks that is being bought. Sell stocks that are being sold.

Except that he first made his fortune by buying stocks that were being sold (due to an error of the other side, but still being sold).
Just tried finding this book you recommended.

I think it's "The Fabric of the Cosmos"
http://www.amazon.com/Fabric-Cosmos-Texture-Reality-Penguin-...
OpenSCAD is actually based on CGAL
This was almost certainly a social engineering hack (if it is true at all which I don't believe it is). There is no trick to how a gift card works...

A token value is stored on the card which maps to a number in the backend, where they keep state. The value on the card is static..

It also sounds like his motivations are criminal.. Otherwise he would have stopped before stealing hundreds of dollars
The Cult of Sharing
Mobile App Remarketing – A Beginner’s Guide
I think Apple is setting the stage for someone else to come out with an excellent virtual personal trainer app. Personal trainers are one of the reasons that the wealthy are more fit than everyone else. This could be a big deal for first world health.
STL is really bad for 3D printing IMO. It's just a bag of triangles - there's absolutely nothing tying those faces together, and it's thus a constant battle with floating point precision to make sure there's no 'holes' in models, so they can be effectively sliced.
There seems to be only one person in that thread arguing that it's not a problem.
And you are part of the system. I don't understand what your argument is.
I couldn't word it better, and when Material design was first announced I was excited.
The style will get boring quick if a large number of web apps use it. Then people will start straying from the guidelines to try differentiate.

Yes, most of the animations feel unnecessary.

I can't find any complex UI examples. Really want to see what it looks like when there are more than a few elements.
Not really. The path history isn't as relevant as the fact that a very small minority of diehards control the path.

Emacs is a good example. The directions of Emacs are controlled by the small minority who take the time to understand how to create elisp extensions or the even smaler minority who actually contribute code to the main codebase.
"we should eat apples that are grown in the nearby orchard rather than in New Zealand"

The problem is, we're going to hit Vladimir Sorokin world order if we try to implement it - 'cause he's already figured that out.
I'd rather not :)
Public, Pointed Scientific Spats – Feature, Not Bug
The best way of reducing birth rates? Poverty reduction.
Exactly. That's basically the one thing the author fails to acknowledge. Money doesn't magically appears from labor. It results as a voluntary exchange between a worker and a employer. There's no "capitalistic system", unless you consider "economic freedom" to be a "system".

This also shows that labor still is connected to needs, despite what the author claims. Somebody wants something done, finds someone willing to do it for money, and they make a deal. Nothing new under the sun, except our society is much richer in needs of various forms which might explain why the author has the feeling our "pace of lives" is much more intense than "that of our grandparents".

Overall, this article is full of communist FUD : https://en.wikipedia.org/wiki/Fear,_uncertainty_and_doubt
And therefore it must be because the US did something, right ?
The linear time search within the node

It's even better - logarithmic as the internal nodes have thier keys sorted and you can binary search within one.
Building an Ark for the Anthropocene
It's called HealthKit because it's basically a software development kit. The GUI is clearly more of an afterthought and a way to keep the settings from getting buried in the already packed settings app.
Can you do that to people in the Africa and the Middle East? India also.

Because people in Europe and Far East no longer overreproduce.

Also, the environment only has value to us if we're still able to use it. No value in the clean environment if humanity gets extinct.
I would be suspicious of any claims to returning to "historic levels" - hunting whales got serious in the 1800s, lighting and powering the industrial revolution, long before we counted the numbers sensibly.
Arc4random – 1996 to present
I encourage everyone to watch Humans Need Not Apply, a mini-documentary by the excellent CGPGrey:

https://www.youtube.com/watch?v=7Pq-S557XQU

I suspect most of what is said in there is well known to the HN crowd, but it's all put together in a very pleasant video and is a nice thing to link to people who don't understand just how far along we are in the process of automating a lot of people's jobs.
"Money doesn't magically appears from labor"

Tell that to job creation programmes. Our society is built on assertion that they do.
Certain elements work very well with Material Design, but one thing that is not working for the web are input fields and text areas. I tried it out for one of my projects and I didn't like it at all. It's very counter intuitive and text areas are a pain if you want users to be able to write more then 3 lines...
The flatness isn't the key point of Material Design, the interactions are.
By doing blind changes you have much better chances of ruining the society in question. Blind evolution works, but it does so by killing most of its subjects by a painful death.
Pretty sure all of those things play an important role in health.
Samsung will launch Galaxy Note 4 in India within 2 Weeks
Yeah, "My pay didn't go down much." != "Academia pays pretty much the same as industry."
"A social movement that would directly occupy the workshops and the factories. Capitalism is abandoning many productive forces, because they are no longer profitable, but they are still capable of functioning effectively"

That won't work. Imagine you've occupied a factory, and it needs a 20 $ worth of oil to produce a shirt. Meanwhile you can only sell that shirt for 15 $.

You can think of most things around us as of made from oil (i. e. energy). Once you spend more energy than you can buy after selling your wares, you are bankrupt. This is why deindustrialization happen and why you can't overcome it by snapping fingers.
I hope the DHS doesn't hire people who make mistakes and bad decisions as much as this guys did.