skysight-inc/HackerNews huggingface dataset:
Ask HN: Books for Parents of Mathematics-Loving Children?
I am wondering what books would be good to recommend to parents whose children are deeply in love with mathematics, especially if the parents themselves have only an average background in mathematics. That was my situation a decade ago, and I found some helpful books I'll mention here, but I think a lot of Hacker News participants can suggest some books that are even better. I'll be speaking to a group of parents whose children are primary-school age but already well familiar with secondary school algebra and geometry, taking an advanced mathematics summer course.

Books that I found helpful for understanding mathematics when my oldest son, a mathematics-lover, was growing up include

Concepts of Modern Mathematics by Ian Stewart (Dover reprint)

Numbers and Geometry by John Stillwell (Springer)

Vision in Elementary Mathematics by W. W. Sawyer (Dover reprint)

The Art of Problem Solving by Sandor Lehoczky and Richard Rusczyk (Art of Problem Solving)

A frequently recommended book for this need is Developing Math Talent by Susan Assouline and Ann Lupkowski-Shoplik, but I haven't made much use of that book.

What am I missing? What do you recommend?
Is Daddy on a call? A BusyLight Presence indicator for Lync for my Home Office
Up until very recently Twitter was still using stock MySQL 5.0.45 (which I believe is from 2007) nearly everywhere in production. The notion that MySQL requires a highly patched version with a world class development team to maintain is a myth. Facebooks patches are made public and are often incorporated into MariaDB and/or Percona forks. Oracle usually goes their own way on implementing changes from the community.

Source: http://tinyurl.com/7adp6fl (PDF)
Since I can no longer edit: In fact, a better translation is probably "of all these evils", referring to those mentioned in the preceding context. The NASB notes that the literal is "the evils", and that's exactly how Young's Literal Translation translates it[1]. The Aramaic Bible in Plain English, which I've never heard of, has a great translation of this[2].

Here's Clarke's commentary[3] as well:

> The love of money is the root of all evil - Perhaps it would be better to translate παντων των κακων, of all these evils; i.e. the evils enumerated above...

Anyway, sorry for the diversion from "hacker news" territory but I think it's interesting to know that not only is this widely-quoted verse not as widely applicable as is usually quoted ("money (or love of money) is the root of all evil"), nor is it even a general statement about love of money ("love of money is a root of all kinds of evil"), but it seems to be specifically just about the evils mentioned in the immediate context ("love of money is the root of all these evils").

[1] http://www.biblegateway.com/passage/?search=1%20Timothy%206:...

[2] http://aramaic-plain-english.scripturetext.com/1_timothy/6.h...

[3] http://www.sacred-texts.com/bib/cmt/clarke/ti1006.htm
We need Digg back for comments on stories like this...
there's no way you can possibly categorize Sparrow's UI as "revolutionary". It's just a simple mail client that works extremely well.

It's a little embarrassing that most software is so bad at simple tasks like this.
"he would have actually taken the $3m"

Story implies he received the money.

"Rather than stuffing that big bonus away in his own bank account"
IMHO, it should be followed by 0.12, because 0.10 is too confusable with 0.1, but 0.12 is clearly a new version...
Contribution as a term here is fluffy. I know what you are getting at but it makes no sense using it for some sort of comparison.

What you need to look at is impact of decisions. If the CEO makes a wrong decision the entire company can go down. If a worker makes a wrong decision it's much less of an issue.
I don't think you can just "throw a datacenter at the problem", this is why Blue Gene exists rather than just renting Google's datacenters. Modeling cells in the body would have some advantages in parallelism due to the very real locality of the problem, but with modern parallel programming techniques things do not scale that simply. A 512-node cluster would not necessarily be able to model something 4 times as complex; as the complexity increases, the computation/communication ratio will decrease, meaning your network (especially a datacenter network) will become a bottleneck.
Sock Puppet Marketing
Busylight UC for Microsoft Lync - call alert & presence indicator
Doing My Homework – Java I: Week 1
"Objectification of body parts" was poor phrasing on my part. The issue is the sexual objectification of women, in this case reducing them to their component body parts (e.g., "big boobs"). A woman is more than a set of breasts—she's a human—yet you often see well endowed women used in advertising as nothing more than highly sexualized decoration with a disproportionate focus on their breasts (or other parts). This is the sort of objectification I'm talking about (and it happens in more forms than this and in more than just advertising).

I don't think this isn't even a matter of stating attraction to "big boobs." This is merely saying "big boobs" for laughs. It's the kind of stuff young children do (see also: the penis game), so I'm not sure why anyone's rushing to defend this sort of behavior.

Let me ask you this, though. Suppose you work as a developer (as you likely do), and you're tasked with welcoming a new female developer to the team and bringing her up to speed on the system she'll be working on. While opening up the source code and explaining one particularly peculiar section, you come across this constant:

BIGBOOBS = 0xB16B00B5;

How comfortable are you showing off this bit of code to the new developer? How comfortable do you think the new female developer would be in this situation?
They can always sell the app and charge for updates Tweetie 2 style. Or add in new features via in-app purchases. Or they can charge for push notifications.

Sparrow was selling hundreds of copies each day for 25$, they were making a lot of money from it. They probably wouldn't have made 25 million $ like they apparently made with this sale, but it's enough to keep a team of developers happy and productive.
Sometimes these things are actually accounting issues. Employee bonuses are operating costs. But executive bonuses are a more complex instrument, and are governed by different sets of accounting and fiduciary regulations.

This is why, for instance, a firm may decide not to pay out bonuses to employees during a bad year -- but may still reward its top executives with hefty bonuses. The firm may actually be obligated to pay out the bonuses to its executives by way of their contracts, or in some cases, as scheduled advances on their insurance policies. (This latter practice is becoming increasingly common as a tax-deferral strategy).
Codecademy- Announcing brand new forums
Just got an email from Codecademy:

"As a Codecademy beta tester, you’re one of the most dedicated and passionate members of our community.
You help us make Codecademy better.
This month, we present you with two items of note:

New and improved forums.
We've added a lot of features you all have requested, including forum design updates, the ability to comment on answers, and most recently Codecademy Discuss, a forum to talk about any programming related topics.
For the next week, Discuss will only be available to beta testers.
We hope you can give us lots of feedback before we release it to everyone!

Beta tester survey.
We would love to have you take an active part in the building of Codecademy. Please fill out a three question survey and help us build an even more awesome community around Codecademy.
Happy Coding!"
While I love Python, I always worry about any language that resorts to this argument, since the lack of libraries is the easiest problem for a language to fix. I still remember hearing (and believing) that Python would never be as popular as Perl, since Perl had far more libraries.
JDownloader Premium 21/07/2012~ Free Hotfile,Fileserve Premium Account
You could this, but you would then be unable to mix any further, so the first mix must be sufficient to give you sufficient anonymity for the transaction you want to carry out.

The resource requirements are not well studied, since none of the literature attempts to handle sorting larger than 32-bit integers. However, on order of minutes would be my expectation.
ASUS spills jelly beans on why Nexus 7 has no rear camera, cites added cost
is it me or is Lolo Jones a beauty....?
You have misspelled "monetize" on your front page:

"Delight your users, monitize your app"
My point is that she had at least as much cause to reject Dostoevsky on "moral" grounds as Tolstoy. I'd bet a fiver that she has to twist herself into quite some contortion to justify that one.

Ayn Rand is interesting, in my opinion, as a pathological case. In that respect she's very interesting - like, super weird. As I said, she and the social ripples around her would make a brilliant subject for a great comic novelist, if there were one around with the depth to get it right psychologically. But I'm not going to work on anything like that, so I have little reason to read her. Sorry if I'm offending you by being so dismissive. I do appreciate your comments.
You're right, you didn't. My mistake, I apologize.

A few questions though. Would you be displeased at someone saying "Hey guys!" or "Hi fellas!" or "What's up, dudes?" to a group of mixed gender?

Do you feel that these greetings play a part in entrenching patriarchy in a real way?

Do you feel that a protest against such greetings would play a part in overcoming patriarchy in a real way?

Do you think it matters if the greeter knows the group they are greeting? If so, does it matter because of actual familiarity or just formality?
In my office they pull the blinds up fully which causes a huge glare on the computer monitors!
I see little point in continuing this discussion. I can respond point by point, but to what purpose? You will continue to ignore and discount what I say while accusing me over and over of being a bigot.

In your world, birth, breastfeeding and hormones exist equally for men and women. There is a basic equivalence.

In my world, childbirth is a very intense and somewhat risky experience that women have no choice about going through after they become pregnant and choose not to abort. Breastfeeding is significant experience that women may choose to go through as well.

In my world, men have a choice about whether and to what extent they we choose to be involved in parenting. Men who choose to parent will experience hormones, etc that may catch us by surprise. But we can choose not to parent, and if we do we will have no hormonal impact.

In my world, an intense and risky experience that you are committed to going through is in no way equal to being able to choose doing nothing. In my world acknowledging that something intense and risky is actually intense and risky is not bigotry. Bigotry would be categorically choosing to not give someone an opportunity for fear of the risk. But acknowledging that it is real is called honesty.

Now if you want to actually learn more about the important hormones and their effects, I suggest that you start with the big one, oxytocin.

You may have the pleasure of the final response. Unless you say something truly shocking, I won't be bothering to respond to you any more. We've both said enough that people should be able to decide what they do and do not agree with.
They probably wouldn't have made 25 million $ like they apparently made with this sale, but it's enough to keep a team of developers happy and productive.

Perhaps this acquisition is just the modern equivalent of royalty/noblity calling up artists and poets. Getting "the call" to work at Google is the tech world's equivalent to being appointed poet laureate or court musician.
Well put. However, one suggestion of his, as related to college writing, that I feel is always valid is throwing away the common ideas.

The best advice I ever received for writing essays was very similar to what the author suggested. Every essay I write, before I begin, I come up with five ideas, or approaches to a subject or argument, and then I cross all of those off the list of things that I will use.

Since you can't hide within the "common thought floating in the community soup," it really does force you to tackle a direct, and often in-depth line of argument.

It takes a little more work at the beginning, but ever since employing the practice, I've yet to get anything other than an A on an essay.

Grammar quizzes however.. Oh, lord.. If only there were a trick for those.. My high essay grades subsidize my lack of anything resembling grammatical competence.

"Is that modifier dangling..?"
Facebook Hiring Process
Google has (figured out how to monetize free-to-use mail). Gmail is free & monetized through ads.
Kim.com
Bloomberg does the same thing. Are there big companies that dont do this? In some way or form everyone is ranked at some point.
I know I'm missing something here, but if they get enough money, they'll add Android support - but doesn't Android already do this (not with CSS, but with XML, like everything else in Android)

http://developer.android.com/guide/topics/ui/themes.html
I have beliefs that hold me back as well. The problem I have is that using the "hacks" in this article goes against one of these beliefs. I don't really believe in changing your beliefs by simply talking into a mirror. I do agree with the people around you affecting you and shaping your judgement. I always thought that these kind of methods were designed for weak people. Because of this I usually don't ever really try any of these methods. Anyone else feel the same?
Been there, done that, got bored with playing that game. Why do I want something that only works half the time and shakily (seriously, look up some of the talks on the weirdness of AppCache) when I can have a nice looking, fast and reliable desktop app for whatever it was, $5 or something?

I've been using the AppCache'd Gmail app on iOS and... it's distinctly average compared to the Gmail app on Android. There's a lot web apps can do well, but for Mail I'd much rather have an actual desktop app.

And it's not just composing responses, it's tagging, archiving, deleting and so on with decent, working and reliable sync. The native app on Android rocks, and Sparrow is pretty damn awesome on the Mac.
State of Data Last Week #108
Couldn't developers just build software and sell it without a recurring stream of revenue? I know the holy grail is a monthly charge, but companies are still making a lot of money just selling software for a one time fee.

Case in point, Google just purchased Quickoffice (my previous employer) which just sold software (and didn't until a few weeks before the Google acquisition have a recurring fee product).
The Effects of Fosamax
Yes. I subscribe not because I cared about whatever features he was offering at the time. (I think it was all about the iPad, and I've never owned one.) I did it because I wanted to make sure he was getting paid enough to keep doing it.

Glad to see that he's happy and feels like he's making enough.
You need the CIA stamp of approval.

They run the www.osdev.org site and tightly control people.

Nobody cares if there are better ways of doing things. They just want absolute police-state control -- moving all source code into the cloud under scrutiny and control.

God says...
C:\Text\DARWIN.TXT

sibly. But when we bear in mind that almost
every species, even in its metropolis, would increase immensely in numbers,
were it not for other competing species; that nearly all either prey on or
serve as prey for others; in short, that each organic being is either
directly or indirectly related in the most important manner to other
organic beings--we see that the range of the inhabitants of any country by
no means exclusively depends on insensibly changing physical conditions,
but in large part on

----

God says...

pretend Special cheerful Theft well-ordered catching efforts
Ideally you can launch your "absolute minimum" while spending nothing except your own time. Put up a free landing page with some enticing copy, and/or set up a free blog and start writing about your subject. You'll end up learning how viable your product is before you even have to build it.

Once you're ready to get a "functional minimum" developed, check out a firm like Prontotype http://prontotype.us/ that specializes in MVP development. You'll probably spend 5-10K at this stage, depending on how simple your idea is. You can also try the outsourcing or freelancing route, but the cost and quality can often vary quite wildly.
Thank you, Marco. If only more people would think the same...
Re: 1, see https://github.com/jashkenas/coffee-script/wiki/List-of-lang... and http://altjs.org/
No. And Thiel's argument is ridiculous. People are so desensitized to technological progress that they don't know it when they see it any more. Yes, Google is primarily "just" a search engine. If by search engine you mean "storing all of the world's data regardless of type and enabling instant access to any of it." Enabling that is Google's art and hobby, but it doesn't always pay, so they have a part time job on the side waiting tables, essentially. Has Thiel taken a tour of Google, Apple, Intel, Microsoft, and every other company with a few billion in the bank and concluded they too are stagnating because they are iterating core products? Does he have some kind of inside information? Or is his argument, in fact, just an excuse to try and make Google look small?

And Reason's headline - jesus christ.
Another viewpoint: http://arstechnica.com/information-technology/2012/07/you-sh...
Especially if the "many" are dead presidents.
Apple: Help the best app developers not get "acquihired"
Ebay killing off its Top Rated Sellers one by one
Okay so I have a point for Ebay (and yes I facebooked Cliff with it too)... I wanted a craftsman screwdriver set to replace many worn out one.... so I searched "Craftsman Screwdriver Set"....

What I got was188 results with only one of the top four what I actually was looking for ... I mean do the search yourself or look at the pic --- the results do not make any sense

TSR sellers losing their shirts right now. All their views are coming from safari. Ebay has been doing beta testing on us without notification and altered the algorithm without the promised 60 day notice. All our ads in ebay.ca still appear in the top. How can a TSR seller with perfect rating and the lowest price and a professional ad be on page 55 behind some new seller with 4 feedback and a product twice the price that takes twice as long to deliver.
This is excellent, but I would add legal documents must be properly served to have legal force. Two easy ways to do this are 1) send a FAX and keep the "FAX received" confirmation with time stamp 2) send an anonymous looking fedex requiring signature of CEO by name but don't include CEO in the address, just name. Be sure to get signature confirmation from fedex.
Just when I think Jeff has written one of his best posts ever, he comes up with something even more interesting.
Well done Jeff.
So can you counter that by having everyone make multiple addresses explicitly (and only using some of them)?

Then you could have everyone ante 1/16th bitcoin or whatever minimum is sensible and dispense with the power of two thing, because everybody would have hundreds of wallets in the transaction.

Or does that just create a lot of correlations when those coins get consolidated?
Interesting. Really wish we could see those licenses.
It's interesting to note that the writer of the post has linked to an article enumerating the Google's hiring process.
Grammar is probably more important for sales than it is for developers. I get a few sales pitches and tend to dump the ones with poor grammar. I feel like: if they can't bother to send a clean pitch, how well are they going to manage my account?
> yet you often see well endowed women used in advertising as nothing more than highly sexualized decoration with a disproportionate focus on their breasts (or other parts)

That is because the advertisers want to show something that will immediately capture the attention of their target audience. You don't see women with big breasts on ads for female hygiene products, or, indeed, anything that doesn't target mostly (or even specifically) men.

A long, reasoned debate showing how intelligent and wise a woman is won't do much for a 20-second ad. I don't find this any more objectionable than ads using tan, muscular men to appeal to women, which I don't find objectionable at all. It's human nature to be attracted to the opposite sex, and the most available factor is external appearance.

> This is merely saying "big boobs" for laughs. It's the kind of stuff young children do (see also: the penis game), so I'm not sure why anyone's rushing to defend this sort of behavior.

I completely agree. However, I don't see anyone defending it, people are mostly just saying "this is just childish, not sexist, and isn't that big an issue".

I am equally (un)comfortable showing this to a female developer as I am to a male developer. I find it childish and might be a bit embarrassed, not because of the gender of the new hire, but because it's a childish and unprofessional thing to have in code.

I am not sure how comfortable the female developer would be, I assume she'd laugh it off, but that's projecting my own feelings onto hers. If I am wrong about this, it will be precisely because I do not know how a woman would feel in this situation, so that's a bit of a moot question to ask me specifically.
They are allowed in PHP as well. The set of regexes looks odd for a number of the languages actually.
> some people have happy childhoods with parents who don't scar them in any way

Actually, they don't. All families are dysfunctional; there is no perfect childhood. Everyone is scarred. This is, ironically, a wonderful thing! Anyone who truly did have a perfect childhood... would never grow up.

Although we are all scarred by our childhoods, we are, however, scarred to very different degrees. You might review your childhood in detail and find nothing worse than an offhand cruel comment one of your parents made one afternoon when they were a little drunk and something had gone sour in their life. But I assure you, if you will look honestly, you will find something.
http://www.theverge.com/2012/7/20/3172222/google-buys-sparro...

> Google buys Sparrow, current apps will not get any new features

we're off to a great start.

And Google has not been shy about killing stuff outright, or gutting products to force users into G+, these last two years.
As a former Android user, I say that a history of responsiveness issues on Android devices makes me particularly sensitive to issues like this popping up on the latest hot new Android device.

Responsiveness is a big feature that pushed me onto iOS devices. Kind of ironic, given that it's the other way around on the desktop for me: my Linux machines are nice and responsive even on modest hardware, while my former MacBook Pro beach-balled and beach-balled. It took going entirely solid-state storage on the MacBook Air for OS X to stop driving me insane with responsiveness issues.
Lenovo CEO gave away $3M of his own bonus to employees
While I understand Marco's position, personally I'm not in that position and I don't want the pressure of running on my business so if someone is willing to offer me 7 to 8 figures plus a massive salary for my startup then I'm not going quibble.

As I once told an owner offering me equity "I'm at a stage of my life where finical stability is a welcome rest-bite so don't be offended if I duck out early."