skysight-inc/HackerNews huggingface dataset:
>The 21 Bitcoin Computer consumes 15W (5V @3A) and has an efficiency of approximately 0.16 Joules per Gigahash and arrives configured to calculate at a rate of approximately 50 Gigahashes per second.

So taking the computer's price of $400 and using this calculator [1] w/ the current difficulty level, 50 Gigahashes/s, 15W consumption, 5% pool commission, $0.15 $/kW energy costs, and the current exchange rate of $332USD/BTC we get:

$0.07 in daily revenue or

5714 days (15.6 years) to breakeven assuming constant difficulty and current exchange rate levels.

---

> Please note: the satoshis you mine provide a source of readily-available bitcoin for application development, but are not intended to be used for investment purposes.

I wonder if they included this disclaimer because the 21 Bitcoin computer will never generate a profit, or because of some other legal barrier? Either way, they should stick "NOT AN EFFICIENT MINING DEVICE, SOLELY FOR DEVELOPMENT PURPOSES" at the top of their description instead of dancing around the issue, making it seem like they're hoping to lure naive miners into purchasing the device.

[1] http://www.alcula.com/calculators/finance/bitcoin-mining/
Needs a better Apple I picture. That was a kit computer sold as a PCB only. The photo is of someone's wooden enclosure, which was not the Apple product.
Well I'm watching MSNBC right now and pretty much every commentator is talking about how the terrorists were communicating using encryption and suggesting the fact that criminals have the ability to communicate secretly is something new that needs to be curtailed. Haven't seen anyone suggest we should read everyones mail yet (maybe they do this in France?). It's pretty crazy the way the media is acting. Am I to really believe they're this dumb and that they're not trying to push an agenda?

Crazy times we're living in.
i don't think the US had any country destabilisation action occuring while 9/11 took place. french hadn't bomb anyone while the 1995's st michel subway station took place, etc etc.

i have a test for evaluating those kind of speeches : would it have been a good speech to give in france or england in the year 1938.
"Chairman Lamar Smith (R-Tex.) wants thousands of e-mails among scientists and NOAA’s staff of political appointees that he thinks will show that the researchers had something to hide when they refuted claims that global warming had “paused” or slowed over the past decade."

Apparently climate change science is not in the published research itself, but can only be found by going through someone's email. What bald-faced douchebaggery.
It will be interesting to see how Warren Buffett's long bet comes out. Just a couple more years:

http://longbets.org/362/
Earth-like world could be 'most important planet found outside solar system'
You're both right, but OP is more right. Targeted plumbing ads elicit slightly higher click-through rates and purchases. Let's say 0.12% instead of 0.1% clicks. So in the ad community's eyes, the targeting is "effective."

But for 99.88% of people seeing those plumbing ads -- including many folks who have already bought their sinks -- such ads are stupid distractions. The net result: there's a big surge in the use of ad blockers, and the swamp is starting to drain.

Another case in point: I now follow Twitter trending reports for Yokohama, even though I live 5,000 miles away and can barely read a few characters of hiragana. It's my primitive hack to disable the trending "service." I'd rather have incomprehensible squiggles on a corner of my screen than a bunch of garbage content that's clamoring for attention, even though it's irrelevant to me.
Ask HN: Are you or your company starting new iOS projects in Obj-C or Swift?
Also, what is the reasoning behind this choice?
Most large federal contracts state the criteria for judgement in the RFP. It is usually some combination of technical solution, cost and past performance with the weight of each varying between RFPs.

Also for large contracts the government will have done some due diligence to determine a range which the contract should cost. If your bid is significantly below this range and your solution doesn't show some innovation to support the lower cost the government is likely to reject it as unrealistic.
What is the point of this? If they want to get merchants started, offer a "starter kit" download. If they want to offer a miner, this thing would take 15.6 years minimum to pay for itself.
"unobscured"?

transistor level schematics are kind of unreadable at this scale. It's a better idea to represent them as blocks or at least at the gate level and notate the specifics like timing and such.
> Every 3 (or 6) months, you have to cough LIBOR in order to receive the fixed leg.

> Why is this so hard for people to understand?

Question answered by earlier sentence in own post. Unless this was a joke?
A CEO's Guide to Emacs. It's Not Just for Programmers
Well, you lose on documentation, community, IO ports, USB ports, and potentially hackability. The first two of those are the most significant IMHO.
Very Rare Pictures of Arnold Schwarzenegger Back in His Bodybuilding Days
> Our goal is to get it live in 60 day

> In six days they emerged with a payroll system good enough to use for Zenefits' own internal payroll.

> After testing it with beta customers for a few months, Zenefits is now rolling it out to everybody and offering the service for free.

It looks like they got an MVP in 6 days and went to market in 60
I was surprised to find that people from Argentina love to drink beer along with mezze like we usually do here in the Middle East. Maybe this was the result of the influence of Syrian and Lebanese immigrants on their cuisine.
> What the Kurds ever did to provoke them ?

Most recently, allied with the West in the same Western acts seen as provocations. And violent Kurdish separatist movements, using terrorism among their tactics, have operated in the region for quite some time, including the Iraqi Kurdish groups that allied with the West during and subsequent to the invasion and occupation of Iraq.

> The Shi'a ?

Most recently, much the same as the Kurds. But the history of Sunni/Shi'a violence, in both directions, is extremely long.

> The Iranians ?

The Iranians have sponsored a lot of the Shi'a side of the Sunni/Shi'a violence in the Middle East since the formation of the Islamic Republic of Iran.

And once a people have been radicalized by attacks by any party enough that they are susceptible to propaganda that sees outsiders as the enemy, fine distinctions among different sets of outsiders often cease to be made. Understanding the root of the radicalization is not the same as arguing that the radicalization, and especially all of its targets, are rational or justified.
"I don't want to spend my life not having good food going into my pie hole. That hole was made for pies."

-Paula Deen
You sound like you have to imagine what a party is like, just out of wonderment
The companies are mostly responsible for creating them, though. No representative is out there introducing complex tax loopholes that benefit his donors without prompting. Whether or not it is immoral to use those loopholes once they exist, the process of lobbying to create specific loopholes so you don't have to pay anymore seems more clearly unethical to me. You're basically "investing" lobbying money in exchange for a huge RoI in the form of tax breaks.
> or they will kill us?

Or you will need to expect repercussions that come from disenfranchising groups of people, and yes, that can include that group taking up arms against you.

A group of people that are being marginalized over and over will produce very angry people. This is the fertile ground that zealotry needs to grow.
I'll dissent here: I like it. It's different from the default behavior and took a moment to get used to, but I much prefer this to the parallax-esque behavior I see more commonly. This mimics a swipe very well. Though worth noting that I scroll with two fingers on a touch pad, so it turns into very much a physical swipe.

The UX is definitely different, but it works for me.
Two years of revenue from a Dark Room
A little coincidental but not completely off-topic...I just read this March 2015 piece from The Atlantic that's been passed around as the article about ISIS and its motives:

http://www.theatlantic.com/magazine/archive/2015/03/what-isi...

It's a great, lengthy read...it's been posted a few times on HN but without much discussion. But relevant to the OP's opinion: the Atlantic writer asserts that the success of ISIS is heavily contingent on it having material victories, including territorial conquests:

> One way to un-cast the Islamic State’s spell over its adherents would be to overpower it militarily and occupy the parts of Syria and Iraq now under caliphate rule. Al‑Qaeda is ineradicable because it can survive, cockroach-like, by going underground. The Islamic State cannot. If it loses its grip on its territory in Syria and Iraq, it will cease to be a caliphate. Caliphates cannot exist as underground movements, because territorial authority is a requirement: take away its command of territory, and all those oaths of allegiance are no longer binding.

This could be an argument for or against intervention...for intervention, because U.S.-powered intervention would likely overwhelm the ISIS forces and take back territory. But OTOH, the writer asserts that besides unforeseen problems of U.S. intervention (as seen in Iraq and Afghanistan)...ISIS wants America to invade for prophetic reasons.

The Atlantic writer asserts:

> Given everything we know about the Islamic State, continuing to slowly bleed it, through air strikes and proxy warfare, appears the best of bad military options. Neither the Kurds nor the Shia will ever subdue and control the whole Sunni heartland of Syria and Iraq—they are hated there, and have no appetite for such an adventure anyway. But they can keep the Islamic State from fulfilling its duty to expand. And with every month that it fails to expand, it resembles less the conquering state of the Prophet Muhammad than yet another Middle Eastern government failing to bring prosperity to its people.
Is it possible to DIY 4004 now, given all the information? :)
I think 18F should definitely allow negative bids as well.
Why would emails be more important than the data? The data should speak for itself, only a politician is looking for "gotcha" phrases they can print in huge letters for a poster board that they put up while making speeches denying global warming. It's not that these politicians don't understand how science works, they understand how to manipulate people to favor legislation that is actually against their interests.

Edit: For those that are suggesting that you need the emails to verify that scientists aren't making up the data, the data itself includes information on its providence. All the information you need to trust the data come from independent verification of the data and from information in the data itself. You don't need emails to verify research, but if you did then there's a problem with how research is published.
I came across this on the gamedev subreddit. For a game that spent so long at the #1 position on the charts these numbers are depressing.
GFDL isn't GPL-compatible, though, and is meant for a quite different purpose. It's fitting, then, that its logo is visually distinct.
And all navel oranges are effectively clonal (with the requisite amount of replication drift). Dawkins chief subject of study was insects, so his books are filled with descriptions (and math!) of genetic similarity and divergence within different insect colonies. Some insect species have colonies whose members have a better than (human) sibling relationship with their "sisters", and in fact may even be (1/2) clonal instances of the queen, and full clonal instances of each other. The workers themselves are non-fecund, but their genes replicate on through the fertile queen. We certainly don't want to say the sterile workers are without species, and it may make more sense to think of the insect colony as a "super-organism"...if we could get past the fact that tissues and organs are distributed, but the long term success of the genetic line is concentrated in the germ-line.
What? 4 comments already and no ManBearPig joke? Al Gore has done climate science a HUGE disfavor. I am cereal.
Related question: How much will a 256 GB SD card cost when we reach that level?
It's very poorly presented. White text (with shadow) on white background and text covering the things we are trying to see both make for a painful experience. On at least one of the pages, the text is unreadable because it is covered by the image of another device.
Interviewer here: In addition to talking about building trading models using sentiment from social media as an input, Rob also talks about his time working with Stan the Bayesian modeling language out of Andy Gelman's lab at Columbia.
Great article.

Only one typo "[pg] is better at some things (that) [sic] Jessica is"

But I do have to say, wow, there was a lot of really new information in this post, to me, and I also could feel the emotion and passion in it.

It's nice when someone gets praised in such a manner - regardless of if its from their SO, because I felt that there was a lot of objectivity in this post as well.
Hey you know what? Fuck these startups
On one hand, the aims of the politicos here are bald-facedly wrong.

On the other hand, good luck with that whole "refusing a subpoena" thing - courts don't generally look upon that with favor, and besides, NOAA is a public institution, so the emails are public record, regardless of the aims of the people seeking them.

Being in a contentious field is not free license to ignore the law, and it tends to make people think you're hiding something when you do this.
James Webb Space Telescope
Currently you can deal with strictness using Bang Patterns. The addition of Strict and StrictData with -XStrict simply lets module writers cut down on that noise and communicates intent. It isn't meant to change or split the language Haskell in two; except for testing, you probably wouldn't go enabling it everywhere just 'cause.

More info on strictness and Bang Patterns: https://wiki.haskell.org/Performance/Strictness#Explicit_str...

This was posted to r/haskell today and helps explain things a bit: http://blog.johantibell.com/2015/11/the-design-of-strict-has...
I fail to see why embedding bitcoin inside hardware is a smart idea, especially given that most of the world are moving towards mobile devices where battery life and storage are super important.

I can see this would make payments more decentralized, but how much do regular users or developers care about decentralized systems? Most of the world depends on highly centralized systems, including the decentralized protocols such as email or the Internet itself.
Can we make Hegel into a verb? For example "You are being Hegeled".
Amplifying on the other posts, just because a problem is an instance of a class that is NP-hard doesn't mean the specific problem is that hard. As mentioned elsewhere in the conversation, subset sum is NP-complete [1], but, metaphorically, if Mario is capable of expressing the generalized subset sum problem, the human-played levels all amount to "Is there a submultiset of the numbers {1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1} that adds to 4?" Not only are all the levels completeable, they're basically trivially so, because what Mario game is there that involves solving sizable logic problems to progress? (Even the Ghost houses are just searches of a very small graph by computer science standards.)

[1]: https://en.wikipedia.org/wiki/Subset_sum_problem
> So donating anything is elitist? Most things that are donated are things that someone else provides for a price, so you will always be "taking a job" from someone else.

If you donate things then you're still buying it from someone, but giving it to someone that cannot afford them. So really, you're a surrogate purchaser.

The problem comes in when you're donating time (via work) to a group that can afford to pay for it, and there are people looking for work that are willing to work for the normal wages/rates that would've been paid.

If the people receiving the benefits of the work can't afford to pay, you aren't taking the work from anyone. When there's no one willing to work for the rates being offered, you aren't taking the work from anyone. But when people are willing to work for the rates offered, and you give your time for free, you are taking the work from other people.

The ethics and morality of giving is kind of complicated.
UNITIATE is an international business platform for senior college students
I'm not sure if these tactics have ever worked in the entire history of human romance. Maybe men just like bragging to women to feel better.
JavaScript (Cordova for the time being; possibly something like React Native down the line) due to cross-platform reach.
apologies. It's not obvious because the jargon is opaque (though I still question why, if it's not understood, it's upvoted to page 1).

In swaps, as the word suggests, you must pay (the prevailing short-term interest rate) every few months for the right to receive a pre-agreed (long term) interest rate. The key is that you must pay, and if your counterparty does not pay, you will not pay either. So you have a much lower credit risk than an outright lending of money since if the counterparty starts failing, you can stop paying. Sure there is still some credit risk, but it's nowhere near as high as it would be to lend money for 10 years "naked". And since the crisis, moreover, we have "daily margining", that is, if you win in any 24 hour period, your counterparty must pay your winnings. If he doesn't you can cancel the contract. That's much lower risk than betting on repayment with no feedback, for 10 years.

I'm just generally quite "surprised" that this stuff is coming out of Bloomberg who should know better.
Bringing the Technological Hammer Down on Cars
> You can use, for example, elaborate if-else constructs that firstly try to determine type of the value, then check for values.

That's dynamic typing. Very different from pattern matching over sum types: with dynamic typing, you can basically forget about most compile time guarantees. Seriously, you sound like, "why bother with Ocaml when JavaScript does the same thing?". I can tell you from first hand experience that they do not feel the same at all.

The other classic example, class hierarchies, is also very different from pattern matching —and much more cumbersome. The only language I know of that kinda bridged the two is Scala, with case classes.
I realise I'm opening a can of very sensitive worms here, but just so I'm clear from that recount...

1. Jessica was asked by a man if she was on her own or on a date

2. She responded that she co-founded Y-Combinator

3. He asked if she had some startups in her portfolio that other investors had overlooked, and asked for her contact details

4. She told him to contact PG

All that left her "shaken" - "'I’m not crazy, right?' she said. “He was hitting on me? He was offering to invest in our weaker companies as a way to get me on a date, right? Did that just happen? [...] Livingston said she wasn’t sure if this man was just flirting, actually attempting to talk investments, or offering venture funding for a date."

If that kind of interaction in public leaves someone "shaken" I struggle to understand how they manage go about their day without having a nervous breakdown.

She was spoken to by an unknown man, and politely dismissed him. How that is worthy of an entire news article leaves me shocked. I am not denying there are gender/harassment issues in tech, but this is hardly one of them.

EDIT: To clarify, as per one commenter's response, my shock is at the news article, not Jessica's (supposed) response.
> Leave the Middle East alone

Not sure if the many 'normal' people who live there would agree. In the end they have to endure their, in most cases, bad governments.

I bet the Saudia Arabian blogger who got punished so cruelly with stoneage methods and/or the women who are not even allowed to drive a car, don't want to be left alone.

The world has become smaller and maybe it is time to enforce 'universal minimal ethics'. Instead that millions of Syrian people flee their home one maybe should (but how?) rebuild by force a capable democratic government there. Administrated by the UN for 10 years if their own people are incapable to compromise.

(A bit naive, I know...)
That was exactly the example that was in my mind, but I didn't have time when posting to look it up. Thanks.
I'm delighted that this essay exists. Jessica helped out in so many different ways during the early days of Stripe that I can barely remember half of them.

(John and I became interested in startups in large part as a result of reading Founders at Work. And then, because John and I were immigrants without credit history, our residence of the Bay Area started with Jessica helping to convince a landlord to rent a place to us. Once the company was underway, whenever John and I had a major decision to make, figuring things out generally involved biking over to Jessica's and PG's place for an invariably clarifying discussion.

I recall one particular decision that John and I had been debating for weeks. We just couldn't decide. Jessica's response, when asked, was immediate and adamant. We were surprised but trusted her. John and I often remark at how differently (and, I'm confident, worse) things would have ended up had Jessica not convinced us to make that call.)
If you really dislike the GPL, I guess maybe copyfree.org might have a logo for you, a circled F.
Very flashy but overall bad web design. What should be on the frontpage as the first thing the user sees is hidden, three actions away:

https://21.co/learn/21-mining/#redecentralizing-bitcoin-with...

------

Regarding the product. I don't see why developers need to develop using actual bitcoins so I don't buy that spiel. There's alternative testing blockchains for a reason.

It seems to me like they are simply trying to become one of the dominant mining pool players. I don't see how they increase mining pool decentralization. All other mining devices are not tied to one mining pool. Their's is.
Technically you can run any of the window managers you use for Linux or BSD on top of X11, but you can only run *nix software, not Mac specific software, in those windows.
I don't see how what you wrote conflicts with what I wrote. "bid up" and "buy" are synonyms in this context.

If you take buyers out of the market the price for whatever it is they buy is going to come down. If the buyers who are taken out were the least price-sensitive buyers, (the theory being that people who aren't venture-backed generally have to spend what they earn) prices are going to come down a lot.
5 Vulnerability Warnings
Optimizing MySQL for High Concurrency on Amazon RDS
Dungeons and Dragons Comes to Virtual Reality Thanks to AltspaceVR
That's probably a better way of putting it even if some of the machines pictured were primarily business systems. The CP/M / S100 bus systems are an interesting historical footnote in that they don't really have the nostalgia factor that the likes of the TRS-80 do. Yet, when I was shopping for my first computer circa 1982, it was by no means obvious whether to go with an S100-based system or one of those newfangled IBM-PC clone things.
DConf 2016 Early Bird Registration Open
I'm ignorant to all the diffs between android versions, is there a succinct place to read about it

Less so about features and more so about semi-subjective statements like "heavy handed FS access"
I think he's complaining about this page sometimes registers your slight scroll-down as scroll-up and goes up a screen.
> Working for free is a luxury for the people not struggling to ends meet.

Not necessarily, this may be also a valid profit-oriented strategy. My wife worked for ca. 8 month almost for free (for lowest rate allowed by the law) to get an entry in her CV which landed her on her next real money job.