skysight-inc/HackerNews huggingface dataset:
The radio waves are collected at points and don't have any x or y data, so making an image out of it is pretty challenging and usually requires moving the radar beam. He just kept the beam still, so the only things you can really see are things that move.

In the image, the bottom axis is distance(calculated from the time the reflection took/the frequency output by the mixer), the color is the strength of the reflection, and the left axis is the time. He walked away from the setup and then back, visible as the two lines, which fade out almost completely as he changes direction, because he is far away and therefore looks smaller to the radar.

http://hforsten.com/static/img/fmcw/football_field_range.png

From this data you could theoretically build an image of his upper torso and head, but it would be very blurry. His arms and legs were not static, and the radar doesn't know how they were moving, so they would just show up as blurs.
$60/sf by the above poster's metric(monthly) would be insanity.
Probably not as much as you think. The author seems to be taking her students' comments and writings at face value, but her students have to praise the Great Leader and kimchi and whatnot in public, regardless of what they actually think. Remember, her students were the elite of DPRK, the kids of high-ranking party functionaries etc, who certainly have access to Western goods and South Korean TV and whatnot. They know full well that much of what they are taught and the line they have to parrot is a lie; but there is just no safe channel to express that, particularly to a foreigner like her.

Now they may not realize the full extent to which everything is a lie, and there's probably a few particularly dim true believers in the mix, but in the North Korea of the 2010s, post murderous famine and in an era of mushrooming black markets, the failure of Juche is pretty obvious.
It's natural for a mature industry (coal) to require less labor than an immature industry (solar) which is in a phase of rapid growth.
Have we come far enough yet with mapping the earths magnetic field that you could use it to cross check your location with the star tracker's data?
Yeah, think about it. Who benefits from the idea that North Korea is behind this? Literally everyone.

Hell, they could even have contributed by donating VPN capacity to leave the tell-tale footprint or whatever without providing any of the actual talent to pull off this operation.
It's not about ego, it's about taste. Specifically the tastes of the majority of HN.

Sure, lots of software gets written in Java. And (less so) Cobol and Fortran. Every sensitive Java (and PHP, etc) user who is on HN and feels compelled to respond to every slight has to understand, though:

HN was founded by the guy who wrote Beating the Averages[0].

We're in PG's house. And he never liked Java.

So if Java fans come here with a chip on their shoulder about it and constantly take the bait and get into flamewars about how solid and adequate their language is, they should remember what forum they're in. Not that opinions in the forum can't be changed, but why bother when there's plenty of Java love out there elsewhere?

[0] http://www.paulgraham.com/avg.html
The problem is that people hate adopting tools like Slack. They see it as just another tool they have to look at, and they totally discount that the communication is happening otherwise(either in person or another tool). It's not necessarily net new data that they now need to keep abreast of if you are, for example, replacing most email with it.
One Month (YC S13) Is Looking for Amazing Teachers – JavaScript, Python, UX
It's beautiful. There's a strange feeling in my heart.

- Someone who built a simplistic lisp->lua compiler a couple of years ago at https://github.com/meric/l2l
The Principle of Computational Equivalence says that Wolfram and his employees are equivalent, right?
I'm skeptical anytime someone tries to attribute an attack to someone else without detailed explanation of why they believe that.
Should have used js, fuckin noobs
China has big plans to explore the Moon and Mars
It strongly depends on how many you order, since nearly all the cost is in the setup. A 10 in^2 2-layer board is ~$300 for ten boards.
Saving money on office space is the main reason management goes for Open Plan. Note that in most companies more senior staff typically get their own office still.
> The high level functions, while nice for demos, never quite do what you need. Want to display data vs. time with errorbars around the data? Sorry, no function for this completely exotic use case, please hack a DateListPlot on top of an ErrorListPlot [1].

'Never' seems like quite a generalization. What about e.g. Classify and Predict, or FormFunction, or Interpreter, or Nearest? Do those all not do quite what you need? Conversely, does other software do better, on average, in 'doing what one wants'? Which software?

There are gaps, definitely, one small example you've pointed out. My pet peeve, for example, is that it is unnecessarily difficult to map colors and sizes onto graph vertices based on vertex properties, which I needed to do for [1].

Still, the scope of visualization functionality is so vast [4] that it's not surprising there are gaps (which we continue to plug, the whole language is a never ending project). And having users report to us what they want lets us prioritize those things. Anyway, clearly DateListPlot should learn about error bars, and I'm sure in a year or two it will. Although it is frustrating you can't just go in there and tweak the source code yourself, I agree.

> Don't get me started on the KelvinsDifference vs. Kelvins thing, which are both represented by the same symbol to maximize your confusion when your unit conversions are failing...

I think Quantities should probably gain a little box, like DateObjects have [2], that lets you mouse-over for more information, which should make this problem easier to diagnose. But the distinction is apparently important [3], although I don't want to "get you started" :-). Either way, Alpha shouldn't change its interpretation from under you, that's definitely a bug.

> http://mathematica.stackexchange.com/questions/65600

Unfortunate, but fixed within a day of being reported! 10.0.2 has passed many weeks of SQA and will ship shortly. So at least this bug will only have been around for 0.0.2 versions :-)

[1] http://blog.stephenwolfram.com/2013/04/data-science-of-the-f...

[2] http://reference.wolfram.com/language/ref/DateObject.html, http://reference.wolfram.com/language/ref/Entity.html

[3] http://reference.wolfram.com/language/tutorial/TemperatureUn...

[4] http://reference.wolfram.com/language/guide/DataVisualizatio..., http://reference.wolfram.com/language/guide/FunctionVisualiz..., http://reference.wolfram.com/language/guide/ChartingAndInfor..., http://reference.wolfram.com/language/guide/MapsAndCartograp..., http://reference.wolfram.com/language/guide/DynamicVisualiza..., http://reference.wolfram.com/language/guide/GraphicsOptionsA..., http://reference.wolfram.com/language/guide/GraphicsInteract..., http://reference.wolfram.com/language/guide/SymbolicGraphics..., http://reference.wolfram.com/language/guide/ImportingAndExpo...
How do you know? This article has been up for as long as I've known Wolfram to have a website. I strongly suspect he wrote it himself.
Fat isn't transformed into sugar, it breaks down into fatty acids which are metabolized using a different pathway.
http://en.wikipedia.org/wiki/Fatty_acid_metabolism
http://en.wikipedia.org/wiki/Fatty_acid_degradation
PSY broke YouTube (or: “the limit of 32-bits”)
Most people in this thread are focusing on developer effectivenss as the sole criteria for office layout. But developer effectiveness != startup's health.

There are three things many people in the discussion are forgetting:

1) Open office vs closed office is not a strict binary- I have noticed that employees in open office layouts are also the most lenient on WFH. I do not see as much leniency/openness towards WFH in closed workplaces. So we have to compare Open Office with lots of WFH vs Closed Office with less WFH.

2) Open offices lead to higher employee retention- Open offices might lead to more interruptions, which might decrease developer effectiveness. However, I have also noticed that open offices lead to a greater social cohesion (since people are more likely to talk and form social bonds), which in turn leads to higher employee retention. It is hard to leave a company where all your friends are. Which would you prefer as a CEO: A company where developers are 20% more effective but 50% more likely to leave, or developers who are more likely to leave? In my experience, CEOs would prefer the latter, as it's difficult to onboard new engineers.

3) Open offices engender more diverse ideas- Companies are also filled with product managers, designers, sales teams, marketing heads, customer and community support, finance, QA, and other teams. An open office will more likely lead to different teams talking to each other, which in turn creates a whole new batch of ideas. Startups rely on new ideas. New ideas often come from diverse group of people interacting.
Yeah, I find this article very insulting and condescending. "Don't worry your pretty little head, our ideas are far too complicated for you to understand!"
Tech Pro Challenge
Having worked in a place with offices and now being in a place with an open plan, I'll never go back.

There's light, there's space, there's people around, I have a better idea of what people are working on, I learn by hearing people talk, it's easy to move to a new desk if I want, the list goes on and on. It's so much better for me mentally that there's no comparison.

I think this is an area people can disagree reasonably; some people just like quiet and their own space. It's really a matter of taste.

I also really think I'm less productive this way, but, hey, I care about my mental health more than my productivity. Of course, employers may want to balance this differently :-).
A common argument against renewable energy pushes is how it hurts the coal jobs - at least in areas like pennsylvania, kentucky, and west virginia. A "they're tryna take er jerbs" argument is a good way to get voters out against it when most people are in the industry, or have parents, siblings, inlaws, or relatives that would loose a job if that happened.
OMG, that's terrible. 2800 people in a room?!
Nor does it mean that those who work in it are irresponsible, immature, or self-important.

Of course it doesn't. Most of them have no choice.
"But I think the longevity is partly because it is available as a free download. "

I'm not sure that's the correct conclusion to be drawn. I suspect the longevity of the book is more due to the fact that it's a perl (or rather, perl5) book. And perl5, as we all know, is now officially an eternal language, never to be supplanted with a newer version. perl6, that mythical beast, is now officially a separate language not really meant to supplant perl5.

more details for the curious here : http://en.wikipedia.org/wiki/Perl )
But wy?
Using lasers to detect fruit ripeness
By that broad definition, there is practically no free website on the web (analytics, logs, etc.). Actually, by posting this on HN, I just "traded data, screen real estate and attention". Would you argue HN isn't free as well? I get what you mean but I don't think this is how the word free is commonly used.

Besides, I believe the original point made still makes sense if "free" is assumed to mean "non paid".
I am also wearing Mott & Bows right now - grey Horatios. I love the fit and my wife does too.

Alejandro - I was wondering if you could share what you think about the future of jeans in 5 years. You obviously have deep knowledge with Mott & Bow, so where do you think jeans and denim is going? Will everyone be wearing different colors of denim in 5 years? Will fit be more customizable and tailored? Will Levis always be the dominant brand?
This is not an ad hominem. Security is a notoriously difficult field, made worse by the fact that bad security is often very hard to tell from good security.

Asking for the credentials (and the research) of someone claiming to have a new security product is a shortcut to knowing how well acquainted they are with this difficult field. Yes, it's a shortcut, but it's also warranted. It doesn't mean they won't be heard, just that they will be heard with healthy skepticism.
No, the ripples show up for very simple reasons. Each bar is a reflection at a distance, the wider bars represent wider objects(which will reflect over a larger range of distances, since the radar beam is not very straight). He guesses what a few of the reflections are and some of it is probably the ground.

The best antenna for radar is almost always a very directional one. Most radars use dish antennas of various designs. The very large majority of DIY microwave radios(more than you'd think) have horn antennas, which are desirable for their large bandwidth. You wouldn't use a yagi on a radar because its bandwidth is very limited, and bandwidth is directly related to resolution.
Serendipity :)
Is the HN platform open source?
Senator Feinstein Now Using Safety Concerns to Target the Drone Industry
This War of Mine Review
What are the particular advantages of a Lisp on the python runtime?

Interop with existing programs could be good, as well as a potential trojan horse to convert a dev shop to Lispier languages if you care about that kind of thing.

Otherwise I'm not sure - what python libraries stand out as particularly useful in this situation? I haven't really interacted with the world of python that much so I'd love to hear.
I imagine that, given the nature of the business, they don't share an awful lot.
Actually no, a yagi would be very bad. The Radar has a 700MHz bandwidth, almost 12% of the center frequency, and yagis work for a fraction of that. A horn is pretty simple to make.
Bitrig 1.0 released (OpenBSD fork)
One of the greatest assets there come from Kenny at kenney.nl/assets.
AK-47: Weapon of Peace
That a question is controversial does not in itself imply that there is no right answer and it's all just a matter of personal preference. The controversy tells us mainly something about the people holding the divergent opinions, such as the extent to which they embrace or reject the scientific method, and the extent to which they are aware of what scientific research exists.

Science evolved precisely as a way to avoid this social noise and find the true status of the subject, through the use of empirical observation and repeatable experiments that test specific hypotheses.

Could there be errors in these studies? Sure, and science has a process for dealing with that possibility, too: create another experiment that empirically falsifies one of their conclusions.

The whole point of the article is that the differences are not inconsequential at all. Numerous academic studies have objectively measured many differences in many different specific environments, and show that the open office is worse in almost all ways related to running a successful business.
I thought I'd post this now that I'm using this as my de-facto way to read HN. How annoying is it when the front page is clogged with "We're going to Mars in 15 years" and "Gangnam Style broke YouTube" stories. I read them, but I don't want to see them after that.

Comments and enhanced animations are up next.
I think open office is OK with very self restrained employees.

I was in a pretty big company with super huge open floors, but globally everyone was quite, you would easily prefer to IM a person 10m away than to try to talk directly. Projects would have group IM sessions and it was the polite way to ask or share information.

If some difficult point arises, there was a meeting space at 10 or 20 meters away, or there's the coffee corner otherwise.

When discussion that atmosphere with people working in other fields, retail for instance, they would find it unhuman and creepy, but I think it really strikes the right balance. I moved to another company more 'startup' like in the athmosphere, with people cracking jokes Here and there, and it's just pure hell from a work POV.
Thank you, you are right. But do you get my idea? That the number of qualitatively new things (that give us entirely new capabilities like "not dying from smallpox" or "flying over Atlantic") is suspiciously low in past 20 years. Yes, miniaturization. Yes, GPS. Yes, communication/information access anytime anywhere. Yes, low-clost airlines. Anything else?
My computer today can not do many things which Pentium-166 couldn't do. Navigation on iPhone 3G was as good as one on iPhone 5S (New versions of the apps are only getting slower so we're forced to buy new phone every year. But my old one was fast two years ago!)
It feels strangely.. nice.

I was always turned off by Python syntax, but liked the explicitness of Python code. I always liked LISP “syntax” but never learned any LISPs, and Clojure is really dense/implicit IMO. So Hy has a nice and unexpected balance of explicitness/familiarity and aesthetics.

But I wonder why someone would prefer this, aside from aesthetics. Macros?
> Whenever I want I can stand up and do a quick and dirty eyeball scan of the office and gauge who's deep in thought and shouldn't be disturbed, who maybe needs help with something, who's picking their nose on Facebook. Project goals, milestones, etc. can be on prominent display on the walls, so everyone can easily reference them--no more "oh, I didn't know we were releasing next Monday" excuses.

I worked in an office like this onc- oh, no, what you're describing sounds more like 5th period English than an office. but seriously, it sounds like you're missing a lot of trust in the ability and autonomy of your reports. I feel bad for your reports, it sounds like you either need to let the axe swing and hire adults or learn to trust and delegate.
Funny, I was doing this in HS in 2003. I was one of the few kids with a cell phone (Nokia), I'd quietly dial E-Trade's automated line to check prices on my stock portfolio.

Didn't make 300k though.
I use fossil; like it a lot.

If you use/would like to use fossil, you might also want to take a look at http://chiselapp.com

It's a bit github-ish; online repository hosting, private or public, and free. (I'd happily pay, but they don't provide even a donation page. So: thanks!)
It is not fair to compare the heavy lift capabilities of the Dragon to those of the space shuttle. The fact that the Space Shuttle does both heavy lift and crew transport means that whenever you want one, you also have to pay for the other. Of course you would not use the Dragon to launch the Hubble.

A fair comparison would be 1 Dragon launch and 1 Falcon Heavy launch which leave quite a bit of room for cost overruns before they surpass the cost of a shuttle launch while delivering twice the payload and the same number of people.

Lastly the total cost of the Space Shuttle program divided by number of launches gives us a cost of $1.5 billion per launch (2008 dollars), according to Wikipedia. While NASA lists the launch cost as $450 million, that does not include the majority of the cost of the program. NASA paid a comparatively small sum ($270 million) for SpaceX to develop the Dragon (Even if there was a second contract that I am unaware of, the cost still cannot approach that of the Space Shuttle).
Zed Shaw uses Fossil in his Peepcode Play by Play episode. If you have a subscription to Peepcode (now Pluralsight[1]) you can listen to him talk about it and why he likes it.

[1] http://www.pluralsight.com/
If you are a lisp-enthusiast, Python comes with strong support for data science and web applications, if nothing else.

If you are a Python enthusiast, lisp-like languages can be used to write DSLs or cut down on boilerplate code in a way which isn't as easy in Python or similar languages.

But yes, in general, a lisp dialect on Python has the problem that Python itself is a great language.
This is a classic paper from 1982, which contributed in setting Leslie Lamport as a top distributed computing researcher.

What did the poster want to indicate?
There are a couple of things in what you said that raise some pretty big flags for me:

nobody gets to hidey-hole in their office, pretending to not be part of a team.

Seriously? That's what you think people are doing in their office: hiding from the team? I love being part of a good team. I love white-boarding broad design. I love sitting down and hammering out the nitty-gritty details. I even like pair programming and working one-on-one. But I am a classic introvert in that being around people is physically draining. I enjoy company and I'm good company, but it wears me out. Putting me in the same room with 5 other guys for 8 hours a day is a good way to get me burned out and exhausted with your project.

The whole business about having to waste an hour to get back into the zone after an interruption is, frankly, total BS.

This makes me seriously question the kind of work you've been doing. An hour may be on the long side, but there are lots of things I've worked on where an interruption will easily cost 15-30 minutes and have a much bigger impact on my willpower and focus. This is compounded by the fact that I'm mentally exhausted from constantly being in a room full of people.

Tracking a bug down through three layers of application, framework, and security code, for example. Writing that crypto implementation that has to be right the first time or customers get owned is another. Studying that new framework that you want the team to learn because it's the new shiny is another.

where they can go away into if they really need that occasional alone time

Look, I get that you're the boss and you get to tell me what to do. I want the team to succeed, so I'm not going to cause problems; I'll adapt to whatever you've decided we're going to do. But if you really want me at peak productivity you need to understand that alone time is my default mode, not something I need occasionally. I know I'm not the only one like this.
The cross to unlock is nice and the in-app is creative. Do you have any sales?
Does anyone know any good resources for complexity of algorithm (NP, TM etc)?
My Great-Great-Aunt Discovered Francium, and It Killed Her
What about the other requirements like having a master's degree in computer science, EE, math or a related engineering field?
Helluw, one of the core devs here. This was originally an idea just to display whats possible with the Python AST. It's pretty neat. The result is an kinda fancy lisp variant with bidirectional interop, macros and all the fancy lisp stuff.
No, there really isn't a right answer. It may be that it decreases productivity and increases stress, but if it increases employee happiness (regardless of stress), that's a tradeoff that can be made. And the article definitely is less solid on happiness--it appears to vary. I'd certainly never, ever want to go back to an office, regardless of the toll an open plan may take on my productivity.
Unfortunately, the solar workers are not as effective a voting bloc as the coal workers, who are concentrated geographically.
Excellent - will have a play with this tonight. Docs look pretty good too, only thing that stands out right now which I want to dig into a bit more is one of the special forms, specifically the dot one - looks like something that would be tricky to see in an eyeball scan of code, but probably worrying prematurely.
I work in an open plan office and skype people that sit next to me all the time.. it's just a better form of communication for a lot of things
Bitcoin. Ubiquitous news reporting (death of newspapers). Privatized space industry. Twitter. Netflix. Gene sequencing for pennies. Working from home. 3D printing.

Its easy to list whole categories of innovation, and say "Anything else?" Aren't those enough?
The language of the metaverse will be JavaScript
http://arclang.org/