skysight-inc/HackerNews huggingface dataset:
The value they offer seems to be: get you the most rewards by using the right credit cards.

I'd like to see some numbers. Are there beta users? If so, how much are they saving? If not, how much does Wallaby predict they'll save their customers? .1%? .5%? 2%?
I've used the Smart Money Clip for about 6 years and love it.

http://www.smartmoneyclip.com/
Paypass/Paywave? If they can't duplicate chip+pin and wireless payments they will never hit the Australian market.
I think this is a good sign for the Coin creators. IIRC Dropbox and AirBnB had similar negative buzz when they were announced. The YCombinator forum seems to like to bash implementation of ideas, specially by throwing other ideas which in theory are better (ideas are dime a dozen anyways).
It's possible to give birth in a giant hospital with medical professionals present without being prone and sedated, though.
"Ad Network partners like Google" but not Google because they don't allow that on their network. If they were sincere, they could switch to more reputable ad networks.
Oh man, I'm glad you've stopped. People must have been able to see that from a mile away.
>killing bacteria alone isnt a problem. Killing bacteria while keeping a human alive starts to complicate the problem.

Thank you Captain Obvious.
$3bb

Supply-demand. If there's a suitor willing to drop $3bb on Snapchat, then that's the market clearing price is it not?

Given that Snapchat didn't accept, perhaps it's worth a tiny bit more.
Babies don't breathe at this point, as they've got a face full of female reproductive tract at the time.
As someone fairly new to bitcoin, what is the actual advantage of carrying the wallet in your pocket?

Wouldn't you rather have your wallet stored say on your home PC, but be able to transfer in and out from your mobile device?
Seems similar to http://www.drawball.com/ , except that Moon requires registration while Drawball is anonymous. Ironic, considering the artists.
There's still the Blockchain wallet app.
Do you lump Kahn Academy in with MOOCs when you say they aren't disrupting education?
Canada & Europe too!
They are not afraid of bitcoin or anything like that. They just don't like bad apps. sorry.
So, it's like losing your wallet then.
You don't have to be new or unique, you just have to be better (but no competition would help).
yep, just over a century.

The story of the forceps is both extraordinary and disturbing, because it is the story of a life-saving idea that was kept secret for more than a century. The instrument was developed in the seventeenth century by Peter Chamberlen (1560-1631), the first of a long line of French Huguenots who delivered babies in London. It looked like a pair of big metal salad tongs, with two blades shaped to fit snugly around a baby’s head and handles that locked together with a single screw in the middle. It let doctors more or less yank stuck babies out and, carefully applied, was the first technique that could save both the baby and the mother. The Chamberlens knew that they were onto something, and they resolved to keep the device a family secret. Whenever they were called in to help a mother in obstructed labor, they ushered everyone else out of the room and covered the mother’s lower half with a sheet or a blanket so that even she couldn’t see what was going on. They kept the secret of the forceps for three generations. In 1670, Hugh Chamberlen, in the third generation, tried and failed to sell it to the French government. Late in his life, he divulged it to an Amsterdam-based surgeon, Roger van Roonhuysen, who kept the technique within his own family for sixty more years. The secret did not get out until the mid-eighteenth century.
"Problem: Creating a website that allows customers to buy a new car at a low price and have it home delivered, sparing them the pain of a stressful dealership visit and price negotiation."

That's not a problem. That's a solution.
Midwives are practitioners in the field of child birth in the same way barbers used to be practitioners in the field of surgery. Yes, they engage in the practice and for a long time they were the only game in town. But it's not a systematic discipline and therefore experience isn't cumulative.
We have already built basic precautions where Coin couldn't be used for skimming. Give us ab it more time to show how when a Coin user walks through the door, you can count on a valid user.
I'm on the Heroku Add-ons team. This is correct. The RDS "add-on" is there simply for people who search for it. In reality, it's just setting DATABASE_URL, and you can do the same yourself.
I hear what you're saying. It's better than Large Online Course Offerings, or Classes Over Internet Telephony Usually Superb.
Do virtual cards like these know when they've been swiped through a card reader? What if they allowed only one swipe when you're ready to make a payment? That way, if someone tries to skim the card, you'd get an alert like "hey, you just gave your card to somebody and it was read twice before they gave it back to you."

Of course, there are a situations where a multi-swipe would be legit, like the register doesn't read the card correctly the first time, or you make a last minute purchase ("you know, I think we will have dessert after all").

Maybe the card could detect the level of perspiration on the swiper's hand and buzz your phone if they seem nervous.
What if my car breaks down?

That doesn't mean that cars were a bad idea, just that I have a crappy car.

Do you have any reason to believe that Coin will be any less reliable than a regular credit card?
We need more honey pot journals to flesh out ALL the nutters.
Much easier to do in Canada with the number of banks involved. The US would be an entirely different story.

The lack of chip card support in Coin effectively makes it a US only product at this point as most of the card-heavy countries have moved past mag swipe (or, are in the process).
A fairly clear case of the scientific community censoring a paper mealy because they don't like it via dubious methods.

If they disagree with the results then they should do their own analysis rather than lowing themselves to this.

A similar thing happened to Bjørn Lomborg
http://en.wikipedia.org/wiki/Bj%C3%B8rn_Lomborg#Accusations_...
That's Adam Lisagor from Sandwich Video! We used his awesome company for our video/TV commercial for Fracture. (http://fracture.me)
You need a wallet to make purchases using your phone (i.e. a wallet with its own address to transfer from or to). It's just like carrying cash. I can't transfer cash from home once I'm at the store, I need it right there. So what I do is usually transfer some bitcoin from my "main wallet" to my "phone wallet" when I think I might need it. If there are no wallet's for the iPhone, however (I use Android so I have no idea if this is actually true), then bitcoin on the go is useless to me.
For storing $40 or so (like cash in a wallet) iOS's keychain should be plenty secure. For larger amounts the Coinbase method seems pretty good. They don't have to trust the device.
Very nice work, and the wiki is also quite nice -- I wish more projects had a page like https://github.com/facebook/rocksdb/wiki/Rocksdb-Architectur.... It's really nice to see a clear, terse summary of what makes this project interesting relative to its predecessors.

At my company (scalyr.com), we've built a more-or-less clone of LevelDB in Java, with a similar goal of extracting more performance on high-powered servers (and better integration with our Java codebase). I'll be digging through rocksdb to see what ideas we might borrow. A few things we've implemented that might be interesting for rocksdb:

* The application can force segments to be split at specified keys. This is very helpful if you write a block of data all at once and then don't touch it for a long time. The initial memtable compaction places this data in its own segment and then we can push that segment down to the deepest level without ever compacting it again. It can also eliminate the need for bloom filters for many use cases, as you often wind up with only one segment overlapping a particular key range.

* The application can specify different compression schemes for different parts of the keyspace. This is useful if you are storing different kinds of data in the same database.

* We don't use timestamps anywhere other than the memtable. This puts some constraints on snapshot management, but streamlines get/scan operations and reduces file size for small values.

Do you have benchmarks for scan performance? This is an important area for us. I don't have exact figures handy, but we get something like 2GB/second (using 8 threads) on an EC2 h1.4xlarge, uncached (reading from SSD) and decompressing on the fly. This is an area we've focused on.

I'd enjoy getting together to compare notes -- send me an e-mail if you're interested. steve @ (the domain mentioned above).
I actually don't want a card. Or a wallet. I'd like my keys and phone and wallet to merge into one blob. This would cause my "oh s$%t I lost X" anxiety to go from 3 points, to 1 point.
thatthatis:

I don't think Khan Academy is typically considered a MOOC--in part because it never really AFAIK considered certification as a goal as Udacity, etc. have. I'm also not sure that simply having a bunch of videos available on programming and related topics qualifies as disruptive. It's not a bad thing certainly! But what is it fundamentally changing? "Disruption" is a high bar.
Its perfect, and the future business model of 2014:

The product that helps startups help startups that help startups... help startups. Sign up for more details!
ShellyCloud
Hello hello! Pretty sure what actually happened in these is that the HDD's internal cache was still active, while the Crucial M4 SSD has no internal cache. The only other explanation is that I screwed up my partition offset on the SSD but I already double-checked that and the partitions were all 2MB aligned.
You're both arguing by anecdote here. It seems to me self-evident that Github has many more projects on it -- not just forks of existing projects, but original projects, period -- than its predecessors and competitors do. This just about definitionally implies that it has a lot more crap. While it would be hard to prove that Github has a higher percentage of crap on it than its predecessors and competitors, that's certainly plausible.

However, you're essentially taking it as a given that the absolute number of worthwhile projects has dropped thanks to GitHub. If there's convincing evidence of this, I'd honestly like to see it, along with a plausible theory as to why that would be the case. What does, for example, Sourceforge get right that GitHub doesn't? (At least from my anecdotal experience, Sourceforge is in fact full of under-documented, unfinished and effectively abandoned crap to more or less the same degree that GitHub is.)
I agree with many of your criticisms (made a few of the same in another comment), but you missed a few points in their favor; looks like you spent a lot of time on this rant, it would have been good to spend a few minutes reading their FAQ and watching their video to make sure your criticism were valid.

Adding a card seems flawed. You're asked to take a picture
of the physical card after swiping to "prevent fraud" ok
but unless Coin uses some advanced image processing/OCR to
validate the card with the swiped data, you can take a
picture of any card. So big fail here.

Why do you expect them not to do image processing and OCR? Credit cards have standardized, highly OCR-able fonts. I would be very surprised if they didn't OCR it.

Most users are totally fine with credit cards and big
wallets.

I'll have to disagree with that. There may be a few people out there who appreciate the physicality of the cards, but based on personal experience, I'll bet a lot more would love to streamline it. In fact, I would love to not carry a wallet at all, just maybe a billfold and a single card or my phone. The problem is this doesn't go far enough; it only eliminates a few cards from the wallet, it does nothing about all of the health insurance cards, rewards cards, drivers license, membership cards, subway cards, etc that clutter people's wallets.

The obvious issue of losing Coin and losing everything.
People like backups. It's a mindset.

According to their video and FAQ, the cards are backed up to your phone. If you lose it, you can just get a new one and transfer your cards to that. And your phone will warn you when you lose it. Actually, one of the big draws are those two features together. Much less anxiety about leaving your card behind.

Battery issues with digitizing a non-battery product
(credit card).

They explicitly state that the battery is non-chargeable and non-replaceable. You don't charge it. According to their usage model (which includes much heavier usage than I use any of my cards, I generally use a card once or twice a day, maybe 4 or 5 times on a weekend), it will get two years life.

While I share the same concerns about privacy, compliance, card not present, and so on, I feel like you went out of your way to pick out problems, ignoring several things that were obvious from their FAQ.
google's browsable map: https://www.google.com/get/spectrumdatabase/channel/
"Flutter By" a short video by Jeremy Yuricek
A butterfly is born in the city and strives to find its way out via none other than one of NYC's finest landmarks.
Shot, edited and animated by:
Jeremy Yuricek
How I Read Fancy Ruby
I am not an investor and have very vague clue of such eccentric valuations but let me get my facts straight. An app which is analogous to a "teen trend", generates no revenue, has a very little or no clue how to either, is worth $3B? Does the brand value and niche matter more than possible potential of company, "money-wise"?
> or remote uninstall on every device (generally used for malware)

Has Apple ever done this or said they could?

Technically, it would obviously be possible, but I don't remember Apple doing it.

My understanding is that when an app is pulled, it's usually still available for download if you had already bought it; but they have removed even that ability in a few cases.
Are you sure that's what is really going on here? The submitted article reports,

"The DCSD found that the defendant had committed scientific dishonesty by appearing as the sole author of an article and by including a reference which did not support the data it indicated to support."

There have been researchers in this same field who have called for better analysis of data sets, only to find that the data sets are not available.

http://wicherts.socsci.uva.nl/datasharing.pdf

http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjourna...

http://www.nature.com/news/psychology-must-learn-a-lesson-fr...

When researchers in a controversial discipline aren't being scrupulous in their scholarly practice, maybe there really is a problem there. (I express no opinion here about Lomborg, who works in a different academic discipline.)
Absolutely not. A second charge would result in Wallaby paying extra interchange fees on everything which would kill them. They also wouldn't be able to authorize properly.

A "network switch", yes, but not using that particular method. They must be a real-time MITM proxy.
mustmayostardayonnaise
can you describe the process of working with the artists to develop this?

did they come to you with the finished idea, or a general concept, or ..? was there a lot of iteration on the idea?
The single index in a query issue seems to have been addressed as of 5.0:

http://dev.mysql.com/doc/refman/5.0/en/index-merge-optimizat...
Getting users to pay isn't the only way to make money.
13% of Americans have 10 or more credit cards? Wow, that sounds serious.

They should probably pass on the Protean Echo purchase, and figure out how to manage their money better.
http://www.hackthatphone.com/3x/kill_switch.html
I haven't taken that particular course. I suspect that peer grading could be made better through incentives but, at some point, you're limited by what your peers are capable of in terms of providing feedback. That said, even making the peer review process more explicitly about feedback than grades would be a be a nice framing in the right direction.

I'm taking a HarvardX course on Science and Cooking at the moment which is very well done. Not exactly programming though :-)
Microsoft Unveils State Of The Art Cybercrime Center
Ask HN: Need feedback on my Professional Quantification website, Predikt.co
Hello hackers, I am looking for feedback on Predikt.co (Quantifies your Linkedin and Facebook profiles). 80+ users have already registered and we are in a beta mode. What do you think of this idea? Here is a sample profile if you dont want to log in (http://predikt.co/users/view/6427DX551) or view trending users www.predikt.co
There are a few things about Udacity that make it different from yet another TeamTreehouse/Tuts+/Pluralsight/Lynda where you pay to get course content:

1) It appears they're sticking with free if you do-it-yourself and charging for coaching and certification.

2) Their pedagogical approach, at least in the few courses that I took about a year ago, has a tightly integrated learn-do loop. And, going beyond just pausing for a mini-quiz, in the programming lessons you stopped to write actual code and attempted to "make this pass the unit tests."

2b) Being presented with a conceptual framework, given a problem that framework could solve, coding your own, then seeing how Peter Norvig would have coded it was one of the best programming learning experiences I've ever had.

3) Their content has, historically, never dipped below first-rate.

The transition to more career oriented skills makes me wonder if #3 might go away, but even if you relax #3, #1 and #2 are better than anything else I'm aware of.

I try to consume as much elearning content as possible (ideally 2x the hours I watch tv), and udacity is in my opinion far and away the best producer.
Winter Fly Fishing
Fly fishing in Colorado in the winter has its challenges; winter often means shorter days and poorer conditions. Check the Colorado fishing reports at Cutthroat Anglers for the best days and places to fish, and go out midday for a half-day of enjoyable fishing. The fish don´t bite as often or as quickly in the winter, so keep your expectations reasonable and you´ll find yourself enjoying winter fly fishing in Colorado. Your approach needs to be calmer when winter fly fishing in Colorado. Try using a two fly tandem rig, since it increases your odds because of the double line. Make many drift attempts, which may seem tedious, but slow and steady wins the race – or in this case catches the fish.
Why people still trust all these cloud wallets? Can't they be hacked/hack oneself some day?
"Just-in-time googling". That made my day, thank you!
Mystery Shopper Scams
According to the linked study[1]:

The mice were protected from gastrointestinal syndrome, caused by the radiation, while the melanin-rich mushrooms were in the digestive system. It still took 45 days for white-blood cells and platelets to return to preradiation levels.

So, the mice lived because they could still eat. It did not protect any other exposed body parts from damage.

[1] http://www.ncbi.nlm.nih.gov/pubmed/23113595
Today I learned that Americans still swipe their credit and debit cards in a magnetic strip reader.
I am impressed with it.
However the biggest complexity in a real spreadsheet is the implementation of a correct evaluation of the graph of dependencies. This evaluate sequentially and if you have a cell with a formula that use following cells, it is not going to work :-/
> has me scratching my head. I would have assumed "there are more people writing code now than five years ago"

If I'd been more precise, I would have said no more code per capita.
There certainly is a kill switch, but as far as I know it's never been used.
Keep in mind, the HDD was using ext2 and the SSD was using reiserfs. Synchronous writes on ext2 are faster than all journaling filesystems.
It's a pyramid scheme! Soon we'll have a meta-meta...meta-n card.
1) They're still offering free if you go-it-alone
2) Their pedagogical approach is a bit different, with a great learn-do loop
3) Historically their content has been "ivy-worthy"
Doesn't make sense really. There's two other wallets, blockchain.info's and Coinjar.io's which are still sitting pretty.

https://itunes.apple.com/us/app/blockchain/id493253309

https://itunes.apple.com/au/app/coinjar-for-iphone/id7252098...

More likely they removed it to fix a bug, than it being forcefully taken down.
Says on the site mate, about $210 per unit
Doctor's are no more than overpaid, highly inconsistent expert systems.
they'd likely be a card processor-- the one who receives the auth request from the swipe terminal and responds with whether or not the charge is approved. they then relay the original request to one of your cards.
I would assume most people use cards based what they're associated with (i.e. Business, Personal, etc) not based on rewards
My thoughts exactly. Dart is representative of 90's language design and as such is a step backward. That's not to say JS doesn't have its issues, but Dart isn't the solution.
So do you simply use fsnotify to trigger a walk, or is something else in place? I guess I should just go read the source.

EDIT 1 : I know there's a limit on how many directory you can watch per process. On OS X, I believe it's :

$ sysctl kern.maxfilesperproc
kern.maxfilesperproc: 10240

So my understanding is that you should be able to watch 10240 many individual directories. I believe that should be enough to cover any Go project, wouldn't it? What lead to that message?

EDIT 2 : So I see you walk the directories every 250ms per default.
"The DCSD found that the defendant had committed scientific dishonesty by appearing as the sole author of an article and by including a reference which did not support the data it indicated to support"

We all know what's really going on here. It's not a coincidence that this paper is very controversial.

Many, many papers would have errors like the above but are not hunted down like this.
Have you taken courses from udacity and their competitors?

Even if this move just gives them enough money to keep producing more content, the world is better for it.

Udacity:Coursera::Community College:Harvard
(and yes, I am qualified to make that comparison, I have taken classes from all four)
Good points. We have upgraded our encryption scheme since writing this page. I think trying to explain security to lay people and make them confident is a difficult challenge. We'll get this updated and re-written.
Outcomes of planned home birth with registered midwife versus planned hospital birth with midwife or physician

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2742137/

"The rate of perinatal death per 1000 births was 0.35 (95% confidence interval [CI] 0.00–1.03) in the group of planned home births; the rate in the group of planned hospital births was 0.57 (95% CI 0.00–1.43) among women attended by a midwife and 0.64 (95% CI 0.00–1.56) among those attended by a physician."

No offense, but the data says you're wrong.
I have several with time-varying bonuses (Discover and at least one other change their bonus categories quarterly and there are other specials for other cards). Beyond that, many of the bonuses have caps and other interactions (e.g. sometimes Discover's bonus on Amazon transactions is better than the original card). Something that manages the transaction routing for me is valuable, even beyond consolidating cards.
Wallaby has an API if any of the smart hardware card guys want us to help out!
they wouldn't be a merchant sending their own MCC-- they'd be a card processor on the Visa / MC / etc networks.
We need to launch in one market first. We intend to do chip solutions in the future.
Kyoto Cabinet will self-corrupt if you use it that way. LMDB supports multi-process explicitly.
Pay with Loop
There is a good history of this:

1. Dynamics
2. Geode (deadpool)
3. Coin
4. Protean Echo
5. Omne Card
6. GoNow Card
7. Escardgot
8. CardLab (http://www.cardlab.com/Mobile-Payment.html)
9. QSecure (deadpool)