skysight-inc/HackerNews huggingface dataset:
Precisely why the Mariana trench has such elevated levels of polychlorinated biphenyls remains unclear. Dr Jamieson suspects it has to do with the trench’s proximity to the North Pacific Subtropical Gyre, a whirlpool hundreds of kilometres across that has amassed enormous quantities of plastics over the years, and which has the potential to send the pollutants that bind to those plastics deep into the ocean as the plastics degrade and descend.

I think that this guess is likely to be right. It would take a very long time for fluid convection and diffusion to transport these pollutants to such depths. But particles of plastic that are higher-density than water will collect a lot of these strongly hydrophobic pollutants on their surfaces and sink deeply much faster than convection/diffusion operate.

There is a "missing plastic" question in environmental science. We see a lot of plastic trash near the surface in oceans, but the visible amount is much less than the amount humans seem to be adding to the ocean each year.

http://www.sciencemag.org/news/2014/06/ninety-nine-percent-o...

Where is the "missing" plastic? It seems likely that some of it is sinking to the ocean floor, either because the plastic itself is denser than water or because it builds up denser-than-water growths on its surface. Finding polychlorinated biphenyls and brominated ethers concentrated at such depths is, IMO, pretty convincing evidence for plastics and the pollutants concentrated on their surfaces sinking into the benthic zone.

(Another part of the missing plastic may be gone due to colonization and digestion of plastics by natural hydrocarbon-eaters; see "Life in the “Plastisphere”: Microbial Communities on Plastic Marine Debris" for a really fascinating paper about this phenomenon.

https://www.researchgate.net/profile/Tracy_Mincer/publicatio... )

It's rather alarming to find such concentrated pollution so far away from its human sources. But at the risk of sounding callous, it's kind of good news for humans and our critical ecosystem services: these very deep ocean regions are relatively isolated from most seafood eaten by humans, and from the photic zone whose photosynthesis is an important part of the carbon cycle. If persistent pollution has to partition somewhere, partitioning into the deepest parts of the ocean is about the best case scenario for surface life.
I can confirm this setup works quite well. Initially it was a bit hit/miss whether it would unlock, but they clearly fixed something, it's much better now.
Who knows, the next great interview question could be asking it.
> People use Craigslist, for example. If the thing is useful, people will use it. If there's a product being sold, and if it's useful to the potential clientele, they'll buy it. Without regard to the UI.

Craigslist achieved critical mass in the 90s, so it's not a good example. Many useful products disappear because they can't attract enough users to become sustainable. A nice UI can affect users' credibility judgments and increase the chance that they'll stick around or buy things.

[1] http://dl.acm.org/citation.cfm?id=1315064
Executives create the organization itself. A company has many moving parts, each with their own constraints, their own goals, and their own limitations. We talk about building a company because all these parts need to be shaped in such a way that they work together towards a common goal. This is not just difficult and cross-disciplinary, it's also intellectually challenging work, and as real a form of creation as writing software. Companies don't create themselves, and people don't automatically organize themselves. You need people who specialize in this, if you want it done well; you need executives.

Sure, we roll our eyes at the nonsense language executives spout, and at the political games they play. And yet good executives create functional companies with a good corporate culture, where good engineering can take place. You might ask yourself: if everything is running smoothly, what do we need the executives for? Much like the IT guy who doesn't get appreciated for preventing disasters, the work executives do is invisible when done well.

Besides, the line between creation and facilitation is a blurry one. Without salespeople there is no budget for programmers to create things. Does that mean salespeople as non-creators are deserving of our disdain? Or should we just appreciate them for fullfilling a vital role within the company? Suppose that executives were non-creators (and they're not), why does it matter? They're nonetheless vital for the company's success.
I think that's because (at least on some CPUs) it takes three macro-operations. http://www.agner.org/optimize/microarchitecture.pdf (section 17.4, page 188):

"Vector path instructions are less efficient than single or double instructions because they require exclusive access to the decoders and pipelines and do not always reorder optimally. For example:

; Example 17.1. AMD instruction breakdown
xchg eax, ebx ; Vector path, 3 ops
nop ; Direct path, 1 op
xchg ecx, edx ; Vector path, 3 ops
nop ; Direct path, 1 op

This sequence takes 4 clock cycles to decode because the vector path instructions must decode alone."
It may be all but dead and a mockery to some purists, but the platform is still a pretty good one.

Even now, it's still the mirrorless system that has AF tracking that comes closest to an SLR in terms of performance (if you take Thom Hogan at his word).

They got a lot of stuff wrong in the early iterations (price, UI, handling), but the last iteration, the J5 was pretty darned good (basically an RX100MK3 with interchangeable lenses).

I switched to the 1 series a few years ago from an APS dslr because I just wanted smaller gear, and I've been totally happy with absolutely no regrets. When I go on vacation, I bring two bodies and three lenses and they take up about as much room as one APS-C DSLR with a superzoom. Why two bodies? So I don't have to bother switching lenses like I had to when I had an SLR.

I get that the platform isn't for everyone and I wouldn't recommend it to many people, but it's far from being the bad system that a lot of people make it out to be.
The problem is that internet ads are very different to IRL advertising. They are executing code in your browser, and have been a source of countless exploits. Not to mention that they are incredibly bloated.

Reddit does this correctly -- they only self-host ads that they've vetted. I have no problem unblocking ads on reddit, but that's the only website I can think of which has non-scummy advertising practices.
It's not so safe, if not developers just copy paste code given by a third party they might inject insecure JS code
If you are serious about photography, you will want something better than a P&S ( or, a very expensive model such as sony RX line)
Creator of Commits.io(https://commits.io) here.

Love the project!

Note on trust: I've shipped out hundreds of posters since 2013. BTW you can create a Gist if
you want to control access exactly. Hopefully Github will allow fine grained access
they are trying out in beta right now.

I'd love to send some PRs your way this weekend (I love elixir) about:

- Fonts - I've messed with so many fonts and test prints and trying hundreds of fonts. I finally settled with Fira Mono. Was probably the best that didn't bleed @ 4pt.

- Margin - I ended up having a 1/2 inch margin to allow frames to not cut off letters, I don't think you do this?

- Classification - How do you throw away vendor code? I found that most repos unfortunately have a huge amount of generated code (JQuery, assets, compressed/minified JS)

One final note, since each :text element has an x and y couldn't you create all the elements in
parallel and collect them at the end? That'll probably save you a lot of time on the generation
time.

By Far the hardest thing was to:

- Launch a single use instance
- Clone a repo
- Classify and remove any "generated" and vendor code
- Create a poster (I use PDFs)
- Take a lower quality screenshot (save the user's bandwidth)
- Upload to S3 so the user can view it
- destroy single use instance

all within 3 to 4 seconds

I ended up going from Ruby => Clojure => Go => Rust for the speed.

BTW if anyone just wants a poster https://commits.io/discount/10off to get 10% off. But I think
you should at least try to generate it with elixir_poster first.
oh come on, get off that high horse. if she's impaired she should be in custodial care. if she's not disabled then she's entitled to do what gives her pleasure. if she's as disabled as you say she is, who's to say that's not the best part of her day when she pops open that soda? she's entitled to make that choice regardless of what the hard left such as yourself think about it.
Avast Antivirus 2017 License Key Free Full Latest Download
Show HN: NotePlan for iOS Beta – Daily Planning with Markdown, Calendar and Notes
Link: http://noteplan.co

Hey, Im the creator of NotePlan. The macOS version is done and out in the wild. The iOS version is on TestFlight and will launch in a few weeks.

NotePlan is a simplistic text and markdown-based app for managing daily tasks using Todos, Notes and a Calendar. Now also on iPhone and iPad. It syncs with the Apple Calendar and soon Reminders.

All data is saved in human-readable text files in your iCloud Drive. The user interfaces is super simple and distraction free - perfect for plain planning.

It's made for
- managing daily tasks,
- planning ahead using the calendar and
- making notes all along.

Especially useful, if you struggle with paper notes and physical planners as a professional. I made it initially for myself and digitized the way I planned with my moleskin calendar.

Visit http://noteplan.co and get on the TestFlight list (see beta badge top right).
Let me know if you got feedback or any questions!
> Are the ownership/borrowing mechanics interesting programming tools, or are they a hindrance?

Like any sort of static analysis, some see them as a tool, some see them as a hindrance ;)

> also come with essentially any GC'ed language.

Ownership and borrowing can extend to arbitrary resources, not just memory.

Also, C and D aren't correct; while Rust helps with memory leaks, it absolutely does not prevent them, and Rust prevents _data races_, a specific form of race condition, but cannot prevent race conditions generally.
Crazy Ways People Avoid Tolls
You make it sound like acquisition is an economic net negative.

Very simply, a healthy business creates value. It figures out how to do something people will pay more than cost for.

My hypothetical startup won't have the resources of a Google, but could be made much better if it did. Why is it unreasonable then to target acquisition as a way of ending my responsibility for nurturing the business and handing it off to another party?
As someone who's sick of giving out my mobile number to sites and services, does anyone happen to know which of these might work with Skype, if they've curiously decided to lock you out of your account since they don't have a mobile number for you?
Americans were willing to die in Iraq, and we still don't know "why" they did.
They appear to be sold out already.
Using JSON seems far more pragmatic than the mindset that gave birth to XSLT, so I don't really see the connection.

JSON is widely used and understood, easy to parse and serialise to, and fundamentally simpler than most alternatives.

You could argue that S-expressions are 'simpler' than JSON, but they didn't take off, for whatever reason - I'm not going to go into opinions on why I think that is, because that never tends to go well on HN :)
Tentative Podcast Episode 32: Sprinting Remotely
Why did NSFW (porn) content come up when I clicked view demo?
Is there a problem with people whose only goal is to acquire a lot of money? Not everyone wants to build a benevolent company that makes the world a better place - some people just want to be rich.
I've been using email since 1992 in a huge variety of work, study and personal contexts. I installed PGP now and then in the '90's out of curiosity but never sent a single encrypted email as I never came across any recipients with it installed. I have never had anyone request email encryption. I don't know what the expert consensus is. But the user consensus is that PGP is invisible, and will never be used outside of a few tiny niches.
Use truecrypt or its successor. Use the plausible deniability option to have 2 encrypted partitions so you can provide a password when requested that opens a partition you don't mind law enforcement accessing.

You must also follow the general rules of use to ensure that it looks like a valid partition to anyone who you are trying to convince.
Took forever to load, then gave me "Page Does Not Exist." Anybody else having issues?
I appreciate the data in your post, but essentially calling the GP "a typical fat acceptance advocate" seems like a needless reductionist attack.
Evidently their intention is that if you write a program with Ellie and save it it is in the public domain. According to my correspondent, they may switch to releasing edited code with the MIT license.

I let him know that those terms would make me very reluctant to use Ellie for anything, even open source code, since the ability to apply an open source license requires that I have a copyright. I suggested that they putting a very visible statement of what they're doing on the page.
That's a huge improvement!
As is your ability to share your fine thoughts with us for free on this site.
You don't have to look at just the last couple decades.

You can look at the last 200 years.

Every decade some smart academic makes the same, Malthusian, population bomb, peak oil, or whatever argument.

And every decade that person gets proven wrong, for the last 200 years.

Is this decade different? Are the Malthusians going to proven right NOW even though they have been wrong every single other time they make these predictions? Maybe. But I think I am going to wait a little while before giving that argument any weight at all.

No arguments, no predictions, only evidence.

We are in late stage capitalism once living standards stop going up, and they have yet to do that.
Agree. When I see people make statements like "but they are not X" its almost always a value statement with a word substitution, and you can just swap in 'good' for 'creator' (or whatever other word used).

GP's opinion that management aren't 'creators' of course neglects a few things:

a) the role of management is necessarily one step removed from direct project output, so yes, they'll probably do less direct work on the project

b) that 'creators' can (and do) move in to management

c) there is no creativity involved in taking uncertain inputs and turning those into the direction & vision of a project

d) that shaping a project's output to maximize outcomes is something that can net a lot more value than adding another 'creator'

e) that 'creators' sometimes don't care about the project outcomes as much as the process

f) that 'creators' may not have experience in the various domains their product or service is ultimately being provided in, and thus may not understand or pick the right constraints to apply during their creative process.

...among many other possible misconceptions.

I've seen this in the education world myself, where teachers (who are similarly front-line workers) were skeptical of management and the viewpoints of those outside their domain being able to add value. 'But they're not educators' was the statement I heard a lot.
> Why is it necessary to volunteer expert time every time someone publishes a new piece of code

I would agree if the author presented a very clearly flawed and poorly thought out implementation, but this is clearly not the case here. There is a quality threshold after which spouting out "No, use NaCl!" becomes a waste of time.

> by their own admission is not a significant improvement over TweetNaCl?

Not everything in the real world has to be a significant improvement.

> [...] if something doesn't do a good job arguing why you need it

Not everyone is good at marketing his/her creations. It's pretty tough to do well in my opinion, and there's always "that guy" who's never satisfied by any explanation.

> [...] _solid engineering advice_

I would agree with you in most other scenarios, but the author of this library mentioned NaCl in the first paragraph. The author also took the time to list the motivation behind this work, as well as the reasons why this could provide potential improvements over prior work.

So I don't see how "NO, use NaCl!" is 'solid' advice in this case.
I would have taken the opposite view-- that a bonus was for hard work already done, not an expectation of future work. A salary increase would represent that expectation.
The financial side is. We no longer need most things to be subsidized by advertising.
No Bugs agile technique (2010)
I too am having issues.
That's also an example where trying to model the strict reality (having no known name) might be worse than just using a workaround in a simpler model. As long as system acknowledges that different people can have the same name and duplicate profiles may be found and need to be merged, John/Jane Doe and Baby <Lastname> seem perfectly fine to me.
It might be useful to ask them to teach you something. How do they explain concepts? Do they allow you to ask questions? Do they speak down to you? Do they admit when they don't know something? Could you imagine yourself going to this person for help or instruction on a regular basis, and trust that they'd lead you in the right direction at a pace you're comfortable with?
New Ammonia Production Method Generates Electricity
No. PFS is about when messages are in transit. Sure thing, it makes sense to encrypt them with ephemeral keys rather than a long-living ones.

However, that particular point I've quoted was - as I understood it - about message archives. Short-lived keys are just fundamentally incompatible with long-term storage. We either keep data, or we don't.

PFS helps for about another point raised, "if a key is broken or leaked..." (but has a trade-off, as it requires some sort of key exchange)
Changing things isn't so simple. Homeowners aren't going to be very keen on voting for politicians who run on devaluing their homes or making them pay thousands of dollars of extra taxes every year.
He gave no testimony, so there's nothing to disbelieve. Everyone has the right to not self incriminate, but that's not a get out of jail free card.

Honestly, what do you envision as an ideal system? The legal system can't be structured like software. You have to be able to cope with unknowns, things that cannot be proven 100%, and people who won't cooperate. This stuff isn't binary.
Ask HN: Anyone else find Intercom pings/msgs jarring?
Maybe I'm sensitive (heh).

Sites that use the Intercom application for live chat, engaging, or whatever and don't blatantly show some icon. Are as bad as walking into a store and being snuck-up on by a employee. Then asked if you've found everything okay three times or more.

Example: I went to this SaaS application's site and clicked around then out of left field. Bewp-Beep (intercom noise), I jump when I haven't heard it in awhile. Then spammed three messages in a row by automated support/engagement tactics.

"Any questions let us know?"
"This John the founder, let me know if you have any questions?"
Click on Pricing. "Hey let us know if you have questions about pricing?"

Or... that side slide out chat interface, like why?

Note: Usually I have intercom blocked but unblocked for something and forgot.
Yi's mirrorless MFT, according to reviews as I don't own one, are half the price of competing models. I have a panasonic G10, but I'am watching Yi...

Have you watched the people that use Action cams? Drones, Dirtbikes, Mountain Bikes, Kayaking and more... A warranty doesn't generally cover "Smashed into building buttress at high rate of speed whilst attached my 250mm racing drone, will you please replace under warranty?"

It seems that most people have settled for smartphones for the bulk of their photographic needs. When you can get a similarly spec'd action cam or MFT cam for 1/2 or even 1/3 the price, a LOT of people will jump on that. Especially people that have broken a GoPro... Ask me how I know that :)

DJI has a lot of competition just getting started... The quadcopter world is absolutely on fire and moving amazingly fast.
Hey, thanks. That's ours too; uses a big chunk of the same technology :)
Serious (and off-topic) question: did Silicon Valley name Hooli XYZ as a nod to that domain name? A whois seems to indicate that the domain was created a year before the second season of the show, when Hooli XYZ made its first appearance.
Please don't contribute to Google's tracking dominance over the web. How insane is it that one company runs their javascript on 90% of the web?
That's been a speculation for decades. Here's a more technical analysis of Heisenberg's calculation of critical mass.[1] He had a figure of tons of uranium. In reality, the bare-sphere critical mass of U-235 is 52Kg. The Hiroshima bomb, which was a very simple design, used 62Kg. With reflectors and compression, smaller amounts can be used.

Whether Heisenberg miscalculated this by intent or mistake remains unknown.

[1] https://www.mpiwg-berlin.mpg.de/sites/default/files/p467_3.p...
How could I possibly know what sort of accent you have? I know absolutely nothing about you other than your screen name and what you wrote yesterday. I don't even know what country you come from or what gender you are.

'Furriner' is a good word to describe someone whose lack of interest in the outside work is so fundamental that they aren't interested in even spelling it properly. I'm not applying it to you, I'm using it to point out that many people are xenophobic to the point of being indifferent to where foreign people come from or what differences exist between them, they're just 'not from around here' and therefore undesirable. This attitude exists and is widespread, I don't know why you're upset at me for pointing that out.
I have never ever thought of a bonus as expectation for future work...
Having had a non-traditional route through learning various math topics, I'd like to advocate the teaching of calculus (the understanding of the accumulation of infinitesimally-small changes) before the teaching of trigonometry (the relationships between different geometric shapes, and the resulting association with waves).

In my (humbly biased) opinion, it's easier to learn how trigonometric concepts operate with a calculus background, than with merely an algebra-and-geometry background. Trigonometry complicates calculus education - knowing trigonometry may facilitate better calculus understanding to some, but not knowing trigonometry doesn't necessarily complicate learning calculus concepts. The trigonometry-first tradition in math education reflects a "number-phile" bias, not the most optimal route for humans to ingest and retain concepts.

Edit: The "number-phile" bias is clear - we want our teachers to be people with passion on the topic, as we're more likely to get a better understanding of the topic. Understanding sine waves as the result of an integral was much easier for me to understand than as the result of a complicated calculation.