skysight-inc/HackerNews huggingface dataset:
As a counterexample, my parents traveled alone as children in the U.S. in the 40s and 50s; it was more common then. But they both grew up to be risk-averse adults anyway. And maybe you would have been a brave adult regardless?

As a parent, you're often forced to weigh a high probability of nothing bad happening vs. a very small probability of something terrible happening. But putting your kids on a bus or dropping them off at school isn't likely to scar them for life.
I don't necessarily disagree with your conclusion but your analysis is an oversimplification. It's possible reading broadly across domains results in deeper individual domain expertise by enabling cross-fertilization between the domains. So the relationship between depth and breadth isn't necessarily inverse or linear.

Take the recent solution to the Kadison-Singer problem. A group of relative outsiders with comparatively little mathematics expertise solved a long standing problem using techniques from their own field, computer science. The depth they achieved in math exceeded that of people who focused solely on the math. And similarly they achieved more in their own field by tackling problems from other fields.

Obviously there's a very tight conceptual relationship between those two fields even if that isn't always the case institutionally. But I think you can easily find examples where knowledge from dramatically different domains contributed to some paradigm shift, breakthrough, or other significant achievement.
That doesn't sound good. Luckily here in India, I have to pay $8 a year for Prime and most items get delivered within 36 hours.
> The only thing that made it somewhat unsafe was the bullying by other school kids. Of course there is an overlap there as yesterday's bullies are tomorrow's criminals

Do you have a source on this? I could see there being perhaps some correlation, but it's far from an obvious fact to me that bullies just turn out to become criminals. Most of the bullies I'm aware of from school simply grew out of it as they got older and were never at risk of not becoming productive members of society, they just developed more empathy and/or became less mean. I'd be curious to know if someone's run a longitudinal study to measure correlation between bullying at younger ages and violent criminality at older ages.
There's no way we're going to simulate every single condition a car could encounter anywhere on Earth and get the cars to do the "right thing" 100% of the time by 2019-2020.

I like how you added "by 2019-2020", as if doing the right thing 100% of the time was ever possible - let alone the goal. Of course, it isn't - Level 5 is just as good as a human. And extremely rare situation won't be handled well by a human either.
For people interested in the relationship between algebra and geometry, there is a quite rigorous, yet not too long discussion of these topics in the "Elements of Geometry for Computer Vision" [1].

It comes the from the engineering end and finds a good balance between going into too much depth and introducing the necessary theory for bridging algebra and geometry.
E.g. representing motion as a change in basis in linear space, the perspective camera as a mathematical model, etc.

[1] http://cmp.felk.cvut.cz/~pajdla/gvg/GVG-2016-Lecture.pdf
A new fast Linux OS?
They also have to put up with all manner of political interference from Congress with regard to rates they can charge, what they can pay employees & what business plans they can implement.

The Post Office has been a political battleground for 40 years and it shows.

The “they are subsidized & squander their money” angle seems unfair given that. Personally I think they do a fairly good job.

That said I think it’s fair to say they are tax subsidized, it’s just not much of one.
And you determined this, how? First hand observation and reporting? Raw reported data (which can have racial bias, if the majority culture reports higher against immigrants or minorities), or what?

You made a bold claim regarding religious practice, and to my view you are now moving the goalposts by adding refugee/minority status into the claim. Should I assume no formal metastudies?
> I'm hopeful that we'll learn from this.

Consider for a moment what you think the lesson is.

Now that you have it...

(have it? great)

... is it different from the lesson when Pocket was made part of the browser?
Yeah... What could be the reason? This one is tough one to crack...
You can put all the speed limit signs you want on that street, but it doesn't change the fact that the road is too wide and straight and people will go the speed they feel comfortable at, regardless of the signs.

That street needs to be narrowed, have parked cars on the side, have speed tables, a boulevard, dynamic feedback signs, or other traffic calming measures. Physical objects and changes to the environment are what cause drivers to slow down in urban environments, not flimsy metal signs.

There have been numerous studies and research projects on this. Here's one by the Federal Highway Administration showing the effects of various traffic calming techniques in situations just like this one:
https://www.fhwa.dot.gov/publications/research/safety/08067/
"To sum up, we’ve just seen that the three most famous single number summaries of a data set are very closely related: they all minimize the average discrepancy between s

and the numbers being summarized. They only differ in the type of discrepancy being considered:

The mode minimizes the number of times that one of the numbers in our summarized list is not equal to the summary that we use.
The median minimizes the average distance between each number and our summary.
The mean minimizes the average squared distance between each number and our summary."
Dark Souls the Card Game
> Don't you think it's time we changed our strategy and rose above this animalistic, purely instinctual nature?

The poster's reaction is justified disgust toward someone who is clearly dangerous to his fellow humans.

Why should traditions that have served humanity well be cast aside because it is $CURRENTYEAR? The burden of proof is on those who would do otherwise, not the natural and obvious thing.
OP here.

erikb is spot on in the sibling comment. This hasn't been expert-reviewed, hasn't been audited so I'm pretty confident there is a bug somewhere that I don't know about.

It's educational in the sense that I tried as best a I could to implement the various algorithmic parts (mining, validating blocks & transactions, etc...).

I originally used MD5 because I thought I would do more exploration regarding difficulty and MD5 is faster to compute than SHA. In the end, I didn't do that exploration, so I could easily replace MD5 with SHA. I'll update the notebook to use SHA, but I'm still not gonna remove the warning :)

I'll also try to point out more explicitly which parts I think are not secure.
For any individual, there must be a breadth vs. depth tradeoff.

However, across individuals, there certainly need not be (and I think that is the intuition). Saying someone "reads for breadth" or "reads for depth" doesn't seem as justified if they read 10x as much as anyone else - relative to others, they "read for both."
One big issue for the US would be where to find kindergarten teachers that can/would want to do this as part of their job.
https://grpc.io/ is Google's internal solution I believe
What is net neutrality and how could it affect you – Debate on Net Neutrality
TPC and the End of Language Dominance
This approach? Quote from this article:

”The cars would be able to run in fully "unsupervised" autonomous mode on certain, pre-approved and pre-mapped freeways in their respective communities”. Volvo said that drivers would be able to fully disengage from the driving process, instead spending time reading a book or watching a video.
I often hear stories like this but in roughly 6 months I've spent in Japan the only interaction I've had with police is when I initiate the interaction to ask directions, and they are always super friendly and helpful. (I'm a middle aged white guy)
The biggest risk in Times Square used to be vehicle traffic. That's true of most places, but it was especially so in Times Square. However, now that it's been turned into a pedestrian plaza, I'd say your biggest risk is being detained by the police for being an unaccompanied minor. There's always lots of police there, and a young child that was perceived to be alone or lost would quickly be put in custody.

Other than that, it's just full of tourists from other parts of the US and abroad, mostly families. Can't see any real risks to children there now that the vehicles are gone.
On a related topic, what are the pros and cons of having a toll on the freeways during peak hours? I find this works well in many countries.
That opposition is constant. Huge numbers of people object to Uber and are concerned about taxi drivers, while Uber has made no effort to alleviate the externalities of their business. And small bookstores, their owners, and their patrons complain constantly about Amazon. Have these criticisms really not reached you?
Germany's Wolf Population on the Rise
What if it's a big, tangled problem? Software is not easy and it takes time to fix a large amount of small issues?
Introducing the New GDPR Center and Navigating GDPR Compliance on AWS Whitepaper
It's an obligation to the United Nations. The original intent was to make it possible for poorer countries to send mail to wealthy countries. Basically, members agreed that they would offer a service to deliver mail within their own borders for free/cheap so that sending mail in poorer countries would be affordable. It makes sense if the volume of mail is relatively low and symmetric, but it wasn't really intended for the sort of volumes Chinese discount sellers are using nowadays.

https://en.wikipedia.org/wiki/Universal_Postal_Union

There have been reforms in the works to help cover the costs in the terminal country, but I'm not sure if they have been effective or not.

http://news.upu.int/no_cache/nd/member-countries-adopt-new-t...

Alibaba also has some sort of logistics deal in place with the USPS to cut costs, but I can't really seem to find much in the way of details.

http://postalnews.com/blog/2015/09/16/chinas-alibaba-and-usp...
No, he's implicitly claiming that the crimes are disproportionally committed by immigrants and refugees, who are disproportionally not Christian. The following article (note the URL), after mutch hemming and hawing, manages to spit out the sentence:

According to the most recent study, people from foreign backgrounds are 2.5 times more likely to be suspected of crimes than people born in Sweden to Swedish-born parents.

Rapidly qualified by statements about income of course: In a later study, researchers at Stockholm University showed that the main difference in terms of criminal activity between immigrants and others in the population was due to differences in the socioeconomic conditions in which they grew up in Sweden.

http://www.government.se/articles/2017/02/facts-about-migrat...

Crying RACIST! at everyone who points this out may be effective in silencing them but it doesn't make it any less true, and it doesn't make the pro-immigration side any less obligated to explain why Sweden is obligated to accept this. It may well be that it's the right thing to do, but using accusations of racism instead of actual moral reasoning, such as, "if we didn't accept them they would be persecuted" is intellectually dishonest.
but why stop there, your own home would be statistically safer without a motor vehicle, alcohol or knives. and wow I hope you aren't in possession of perscription drugs, haven't you heard we are suffering an opioid epidemic?

isn't it time you thought of the children?

and as it stands I also believe one should have the right to take one's own life, so I completely discount scare tactics predicated on suicide stats
"does that mean black people are more suited to be piano players"

Maybe I'm misunderstanding things, but if some statistical factor was identified with predictive power, does that not literally mean that generally they'd be more suited to be piano players?

This isn't some argument about philosophically what constitutes a piano player. If this were true, you'd expect on average that this group has a higher proportion of piano players, and you could say heuristically that, yes, they are more suited to be piano players.

Caveat: this does not necessarily mean you should base decisions solely off of whether they belong to the group, as it depends on how strong said predictor actually is.
Burglaries are often done by crews that roam through an area and then move on. When they get caught, it's often by piecing together information reported by victims and neighbours etc. It's then a cat and mouse game of reaching them before they move on, and it requires concentrated effort from the police. Often at the end you can get them on all 3 categories.
when I was 9-10, while living in Munich around 1989-1990, I rode the U-bahn (subway) to school with 2 other kids around the same age everyday. Had to do a transfer in between also....
Thanks ! I've completely left out communication from this because it wouldn't fit in the notebook and I haven't researched it. Would also appreciate if anybody has good resources on it.
So the only way is to get reported to the cops, get my children held against their will, mount a legal challenge and win to set a legal precedent in my state/county. Ouch.
> On a more serious note, I can't believe any government can keep a tight enough lid on something like that. Someone, somewhere is bound to defect or to leak it is somehow.

Except that what you are swatting away with that comment is someone claiming to have heard that leak. One could also look at the NYT article as another leak, no?

I would think that if one had something top secret like this that one desperately wanted to keep under wraps despite the inevitable leak, the best strategy might well be to intentionally sow lots of bogus UFO sightings and create a subculture of UFO paranoia, so that when the true leaks eventually happen they are lost in the noise.

Which of course does not mean that is necessarily what has actually been happening.
You just completely ignored my post . You don't seem to be reading what people are writing.
Thanks ! The awesome-blockchains is a great resource, thanks for sharing.
>It’s full of people who will make good employees.

Yeah I would agree with that. You can see the conflict of interest here though - with the existing system US Federal Government employees are making decisions about who might become a citizen one day. Presumably, those citizens will then hold the government employees accountable for their actions.

This biases US Government decision-making towards populations that tend to be pliable and dependent on the state, rather than populations who have the capability of building alternative bases of power.

Honestly what this means is that decisions about who to let in the country are too important for the US Government to be making - exactly because citizens should hold it accountable for its behavior.
Summed over an entire economy, inflationary behavior will result in stealing from the poor and middle class to fund the wealthy and overconsumption and ecologic destruction.
How to Build a Binge-Worthy Product
Sorting: What Algorithm You Should Choose
Playing Your Role
>The only people who can shoot you are cops

And ISIS, as has been shown in France.
See, what's interesting to me is that the grandparent comment describes "50 Shades" as ~8 hours of reading. The zero-sum argument assumes that reading time is some fixed value for all people. I don't remember how long it took me to read "50 Shades," but it was significantly less than 8 hours, and couldn't have been more than an hour. (I'm not saying that to brag. It takes me a lot longer to do many other things than many other people. My only point is that the author of the article completely ignores throughput variability in his calculus.)
Plea-bargaining is totally insane.

Quick example, you own a gun in your Florida home. Unbeknownst to you, your (idiot) cousin smokes a joint in the driveway before leaving and leaves joint on your table. Neighbors call police, they enter your home (based on smell) and find a gun and a joint. You are looking at 10 YEARS in federal jail [i] as a prohibited gun owner, a few months in county (for the joint), possibly some time in state prison for child endangerment (kids were home), and the CPS took your kids that day. IT DOES NOT MATTER if your are innocent or guilty you will do a plea deal. No jury for you. US prosecutors rely on extremely harsh possible sentences to bully innocent defendants into jail.

https://www.justice.gov/sites/default/files/usao-ut/legacy/2...
It's pretty understandable that fanboys are badgering skeptics on social networks. If I had a few hundred thousand pop out of the blue from a cryptocurrency fad, maybe I would be doing it as well. And that's a big problem, because mainstream journalists are guilty of that as well.

MIT Technology Review, to pick one example, wrote an article about IOTA, mentioning their partnerships with mainstream companies, even though IOTA refuted the partnership notion the same day. Clearly, the author didn't reach out to any of those companies for confirmation.

I can't help but think that many of those articles are written by people, influenced by their own cryptocurrency assets. In fact, this conflict of interest for journalists could be one of the key driving forces of the bubble.
Agile’s Three Leaps of Faith
Yup. It was only about a year ago that the undefined behaviour sanitizer stopped segfaulting when I turned it on, despite it being clearly "documented" in the man page. I'm amazed that a company with the resources of Apple has such shoddy developer tools.
I sympathize, I love reading but I intently skip some books until they have surfaced - I view reading as a monte-carlo localization: read what appear to have the most probable high reward as determined by the prior exploration, but occasionally throw a curveball in there in case you might be missing something that is just that far out. Interestingly, can be applied to many other aspects of one's life.
I find it quite silly when after having done science seriously for less than 200 years we think we understand all of physics, especially when our models clearly have gaping holes and contradictions.

Nevertheless you don't even need new physics for this line of speculation. Fusion rockets will do.
A designer, a developer and a product manager walk into a bar …
From simple following of daily news. From frequent visits to Malmø over the years. From Malmø friends who are leaving or have already left because the situation is getting out of hand. From top officials in the Malmø police force, who report themselves unable to cope with the escalation. From the official Swedish bureau of statistics, whose numbers are crystal clear.

Also, I do of course realize that this discussion is pointless and impossible, even in the supposedly rational environment of HN.

So far, the only rebuttal I have seen has been "racist dick".
I would guess that criminals have kids and kids of criminals are more likely to become the bullies and thugs that follow you into the forest to beat you up and take your bike.
just gives you a sense of the protocol, which is probably GTK if you’re technically inclined and speculating.
You seem to define 'pedestrian friendly' as 'not totally impassible by pedestrians'. A dark, unlit cave that requires a pedestrian to potentially walk several blocks out of their way (e.g. from a house on North Avenue to the McDonalds) is not 'pedestrian friendly' in my book.

And this is the best-case scenario, where the highway is relatively permeable because it's next to downtown.

The Columbus freeway cap is a far better example of integrating a freeway into a neighborhood:
http://featuresblogs.chicagotribune.com/.a/6a00d834518cc969e...
https://www.google.com/maps/place/Columbus,+OH/@39.9740161,-...
But it's an expensive enough project that it can't be possibly be duplicated on every street crossing, and the freeway infrastructure surrounding it still profoundly separates downtown from its neighborhoods.

What Strong Towns is about is prioritizing cheap, maintainable infrastructure that supports walking and biking— and freeways are not remotely cheap, especially when designed to be anything but an awful experience for those not in a car.
Age discrimination did not make the list. Maybe the survey poster's audience is not affected by it or maybe it's not controversial to admit that it is common practice.
> So, incidents like the Vegas massacre; is there any response to this kind of thing at all you'd accept, or is it just not a problem that 58 people got killed and hundreds wounded?

A good response would be to react to overall death statistics and not emotional one-time events. I'm quite confident that across the US, cars have killed more people over the Vegas news cycle.
I admire the effort on this pet project. But this is yet another Linux distro, not a new 'OS'.

Unless I am missing on how this is unique than all the others. :S
OP here.

Swapping MD5 for SHA256 is very easy. I'll actually do it - see my other answer above for why MD5.

For the other differences to bitcoin and from the top of my head :

- In my implementation, wallet addresses are the public key of the owner. Bitcoin addresses are slightly more complicated [1] and a wallet can (and should) generate a new address for each transaction.

- Bitcoin uses ECDSA instead of RSA

- Bitcoin transactions use a (simpler than ethereum but still) scripting language [2].

- The whole communication part was left out : you need a way to broadcast blocks. I haven't looked into that

- Bitcoin uses a Merkle tree to store transactions (and prune spent ones).

I think the scripting and communication would be the two biggest tasks. But it would also require unit testing and obviously wouldn't fit in a single notebook.

[1] https://en.bitcoin.it/wiki/Technical_background_of_version_1...

[2] https://en.bitcoin.it/wiki/Script
> So basically the USPS was already losing a ton of money

The USPS isn't losing a ton of money. It is profitable.

The "loss" is that congress mandated that the USPS accumulate 75 years worth of employee retirement funds and gave them 10 years to do it. So they "lose" $5B a year because they are not able to pay that amount into a retirement fund.
So given how recent events have unfolded, how is your friend doing?
Have you ever seen SoapUI tool[1] ?

It takes just a few clicks to generate complete set of requests from WSDL (set, as in "one request per each operation"). I think it's much better user experience than hand-crafting json to use with curl.

[1] https://www.soapui.org/
This incident did not, as far as I can tell, harm anyone's security or privacy. This add-on doesn't appear to track you, send your information to anyone, or grant access to your system to anyone else. People are upset to find the add-on on their systems, but what it actually does is not incompatible with the above paragraph.
Show HN: Bitcoin Christmas Tree
Using a RaspberryPi, some Candle IR LEDs, a small Christmas Tree and blockchain.info API I built the Bitcoin Christmas Tree as a weekend project :)

http://www.bitcoinchristmastree.com/
> I don't remember how long it took me to read "50 Shades," [...], and couldn't have been more than an hour.

Based on ~155,000 words[1], that would be reading ~2500 words-per-minute.

Most everyone else reads around ~200wpm to ~400wpm. Reading at 300wpm is considered "fast" for a college-educated adult.

[1] https://novelwordcount.com/2015/04/11/fifty-shades-of-grey-w...