skysight-inc/HackerNews huggingface dataset:
Bernoulli force is just a way to look at things. It can fully explain the lift - as well as why planes can fly upside down. Alternatively, you can operate with direct Newton laws without referring to Bernoulli effect. You can mix these two explanations :) or have some other one - these are all just different aspects of the same process.

For example, from Newton one can state that the whole lifting force F_lp acting on the plane is opposite to gravity force F_gp acting on the plane, so plane flies horizontally (in the simple case): F_lp + F_gp = 0. Next, from third law of mechanics the lifting force F_lp acting on the plane is opposite to F_da force acting on air downward: F_lp = -F_da. From the second law of mechanics force F_da acting on air causes the air momentum to change: F_da = dp/dt, which means that either the plane pushes a lot of air down or the plain pushes air down really fast, just like article says.

Looking into the picture from Bernoulli perspective, we can talk about flows around the wing. If say we have a wing which is flat underneath and curvy on top, the air is initially pushed upwards until the top point of the wing is reached. From there air continues along the wing profile, which goes down, so air has a chance to accelerate - this is effectively an empty space which becomes available to the air, and air goes from points of higher pressure to points of lower pressure. The air speed increases, the pressure remains less than in (unchanged) air below, so we're getting the Bernoulli effect - lower pressure above the wing.

If the plane is upside down, it won't fly horizontally. It has to fly somewhat upwards - in which case flows on both sides of wings change, with net effect the same - the air is pushed down, pressure under the wing is higher than above, both Newton and Bernoulli explanations work.
To use the webapp you have to send the master password over the network. So if that connection is captured in some way, your account is hacked. But extensions actually save the encrypted store locally - you can even access them offline (password is still required).
Tracking Bluetooth Skimmers in Mexico, Part II
Steve Wozniak on why Steve Jobs Left
Grab a dictionary - there's "us", and there's "all".
All of your references are discussing and debunking misapplication of Bernoulli.

In fact, Bernoulli applied correctly explains all of the lift. The Newton approach also explains all of the lift. They are just two different ways of looking at the same thing. Bernoulli comes from applying conservation of energy. Newton comes from applying conservation of momentum.

See this discussion from NASA: https://www.grc.nasa.gov/www/K-12/airplane/bernnew.html

What's puzzling is that it is not at all uncommon in other areas of physics for there to be different ways to explain something, and this causes no problems.

If one person calculated the velocity of a dropped object by integrating the acceleration, and another person did it by using conservation of energy on the conversion from gravitational potential energy to kinetic energy, people might argue over which approach works better, but no one would argue that the other approach does not work and does not explain 100% of the velocity.

Or one person might calculate the response of a linear circuit to a sinusoidal signal by working in the frequency domain, and another person might work in the time domain. People might argue over which approach is easier, but again no one would say that only their approach works.

But with lift, people seem to like to latch onto one approach to the point of rejecting the very idea that there might be a different way to get the same result. It makes no sense to me.

The Newton approach is easier to teach reasonably correctly, so that's probably best up through, say, first year college physics and for pilot training.
At least it's not fart apps. They're both selling real services. One of them is concrete and the other overvalued, is all.
Object-Oriented Controversies: Tell Don't Ask vs. The Web
How do you mean? Patents are generally reasonably expensive to pursue in time and money. I'm curious to hear more about the prank aspect of this patent application if you care to share.
Maybe the ad-heavy Internet was just a phase. Business models come and go. Craigslist killed newspaper classifieds as a business. Ad blockers may kill web ads as a business.
Sounds gay
Congrats Josh and team!!!!
> Were I to say that the expression of gene A is 'random,' then it would seem to imply that there is some minute chance that the result is a billion copies of the gene

Not at all (in mathematical terms, anyway). You can certainly define the probability distribution of a random variable such that only certain values are possible. This is known as its support: https://en.wikipedia.org/wiki/Support_(measure_theory)
Sad, if so. I'm a paying user of Evernote. I have noticed that it hasn't really gained new features lately.
What about the benefits to teachers? Taking a test on a computer won't make you perform any better, but it frees up a lot of the teacher's time grading, which is often spend "after hours".
You bring up good points. But...

>Homophobia may be one possible reason. If two men unconsciously stand too close to each other while looking at the same thing someone (a woman did this to me once) will exclaim "ARE YOU TWO GAY!??".

Is that really fear of homosexuals? Or more a heterosexual desire to appear available. Even among other males who make those "accusations", the counter-reaction to not appear gay is also an attempt to appear available to women and not decrease your odds of that (you don't want false rumors to spread).

To me "ARE YOU TWO GAY!??" is more flamboyant curiosity than a homophobic behavioral condemnation.
Internet-based Top Bartercard( http://www.topbartercard.com)
The Internet provides a new medium for the barter exchange industry. Pure Internet-based Top bartercard companies differ from traditional, organized trade exchanges in that they do not have a physical office. In modern Internet Top bartercard exchanges, there is an agreement or process in place to value goods and services exchanged, which is facilitated by the Top bartercard exchange for a fee. A Top bartercard exchange functions primarily as the organizer of a marketplace where members buy and sell products and services among themselves
http://www.topbartercard.com
> if every nuclear reactor was hit by one of these

I don't know, if Iowa and Nebraska got hit by a 9.0 earthquake and tsunami, I would be pretty fucking terrified.
The US still has Peach Bottom station in Pennsylvania. Same reactor design as Fukishima. If they ever lose cooling water pumping, they will have a meltdown, just like Fukishima. All the regulators know this, so they have a lot of backup generators in different locations, and nine ways to get cooling water into the reactor. But the design is still not a good one.
Great post, William. I really appreciated your exposition on both the challenges you folks were facing and your solution to the problem.

As a few others have pointed out, sending a lambda function through NumPy is almost always the last thing you want to do. Unfortunately, you were in a situation where you were either going to have to do something really painful like using einsum: https://stackoverflow.com/questions/29989059/matrix-multipli... or writing your own ufunc:https://docs.scipy.org/doc/numpy-dev/user/c-info.ufunc-tutor...

I suspect that your primary limitation was the Google Compute Engine infrastructure. I'm not familiar with the limitations there, but a quick search on Google turns up a fairly limited set of libraries indeed.

I thought it would be interesting to adapt your code slightly to use Numba acceleration. Here's what it looks like:

from numba import jit

def avg_transform(image):
m, n, c = image.shape
for i in range(m):
xi = image[i]
for j in range(n):
avg = xi[j].sum()/3
xi[j][:] = avg
return image

fast_avg_transform = jit(avg_transform, nopython=True)

I observed 25ms per image https://gist.github.com/ahmadia/c1f8be119f3cb2d2b8e5 processing times on my laptop on 1280x720 pixels.

Re-reading your post, I suspect that einsum might actually be your cup of tea, but I really enjoy the simplicity and performance of using Numba for these sort of tasks.
Your Inner Feather (2014)
Great Lakes region is looking okay right now.
Billions of dollars a year already go into cancer research. Infinite funding != faster progress.

I'd say the allocation of capital has been fairly efficient. Uber will be doing self driving vehicles(among other companies), and that will be as transformational as the automobile itself.
I've no idea, honestly. As a practical matter, first I have to find someplace I can work. And there are no utopias.

There are a few things I'm not fond of: tornadoes, wildfires, periods of extended drought, heavy traffic, extremely high crime, dislike for Californians (Oregon & Montana). A few things I don't mind: cold and snowy Winters (it's just mountaineering with more infrastructure and support), regular storm seasons, earthquakes and hurricanes. A few things I really appreciate: mountains within a couple hours' drive, lots of outdoor activities, younger and more active and better-educated populations. Maybe Utah? (But: http://www.latimes.com/nation/la-na-utah-drought-20150530-st...)

Unfortunately, snowfall over the entire Rockies seems to be on a declining trend (http://usatoday30.usatoday.com/weather/news/2011-06-10-clima...), so any place that relies on the Rocky Mountain watershed is going to be dealing with drier conditions for the foreseeable future.

I'm open to suggestions.
"you don't get to complain that Google doesn't want to license you their app store"

Did they?
Used to use Evernote 10+ times per day. Now it's a few times a week at most. Seems the product has stayed stagnant for a while now.
I disagree, I found OP's statement to be very egotistical. He was painting himself as superior to younger men because "they haven't experienced much, that's why they don't cry!". Should younger men whose hormones don't allow them to cry feel bad about themselves? Are they subhuman for what they are? Have they not had enough "real life experiences"? This is obviously false. In fact, the majority of young men who experienced far worse than OP would still find themselves less likely to cry, and the reason is simply: biology.

edit:

>and think it's a sign of sanity

Right, only OP is sane. Men who don't cry are lunatics.
There was a lot of "first" in the previous comment, which might as well be synonymous with "front" in this context.

As an example, Linux wasn't the first UNIX-like kernel or the even the first free UNIX-like kernel, but it (with GNU) was the first free UNIX-like kernel to bring a UNIX-like kernel to the mainstream PC world and span the entire vertical range of computing scale from microcontrollers to TOP500 supercomputers. I'd call that expanding the technological front.

Edited for GNUtical correctness, which makes it quite a bit harder to read
Why would one think that theory only comes from schooling? Some of the largest contributions ever made to hard sciences have come from people with litte formal schooling. E.g. https://en.wikipedia.org/wiki/Michael_Faraday

I agree with your idea that degrees are mostly about credentialing. In the best case, they can lead to a close mentorship from an expert, but that's rare these days.
I am on a rMBP and I wouldn't call it beautiful.

It's painfully thin, and the eyestrain factor is pretty high.
Without wildcards you can't use the automated tool to pre-provision new servers, for example.

Say 1.example.com is in production and is to be swapped for new1.example.com which is in staging.

new1 can't obtain a useful cert from Let's Encrypt until it becomes 1 in Internet-facing DNS. So you have a service discontinuity whilst moving 1 -> old1 and new1 -> 1 and then applying for the cert.

I appreciate that the set of people managing such issues probably aren't the target market ( they also won't be running an as-root tool to make automated changes on their edge servers... ) but it's an example of why wildcards are so useful.
OK, so the plane shoves air out of the way, and that takes energy. But when the plane passes, air will fill the air tube. Is there any way in theory to recover from that air filling the air tube some of the energy that was expended in making the tube?
I’m on linux, and yes, it does. Opening the font selection menu can take for me, with 7000 installed fonts, about half an hour sometimes. I just don’t do that, instead select fonts by name (I know most of them now).

But you don’t notice it until you open a font selection menu.
Building a Tetris Clone in x86 Assembly, pt. Ⅱ: I/O
None of those things has had any affect on my life or the lives of anybody i personally know (yet).

I booked a ride on Uber just the other day.

edit: typo
Both Uber and SpaceX are technically 'transportation companies' in a loose sense. None of the things you listed above really further any field in basic science and academia. SpaceX's achievements simply sound cooler because it is with big rockets and more tangible to write down for record keeping. They are essentially using rocket tech in a new, different way that employs a new business model for success - which, surprise surprise, is exactly what Uber does as well but with terrestrial transport vehicles.
What's the target audience of the beta program? I'd love to play around with this on a personal domain but I doubt that there will be more than 2 or 3 unique visitors between now and general availability. Do they want signups for the beta program irrespective of the traffic volume of the site or would toy site signups just be more of a hassle for someone to approve?

The verbiage on that page isn't very clear on if there's some manual process for approving beta participants or if it's just grab 100 entries a week out of a Google Sheets page.
OpenSAP – Enterprise MOOCs: Learn anywhere, anytime and on any device
Evernote: "Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important ..."

And they're going down. Not good.

How to export your data from Evernote.[1]

[1] http://jasonfrasca.com/deconstructing-everyday-blog/evernote...
Understanding California’s Groundwater (2014)
No offense intended, and I'm not being accusatory, but:

> The amount of groundwater that the farmers are pumping is absolutely insane -- agriculture in that environment doesn't make sense.

This is the sort of statement I was talking about being frustrated with earlier. Given the overall growing conditions in California, it's insane not to farm as much of it as is practical. The water problem in California is complicated and multi-faceted, and it is not entirely the responsibility of agriculture to solve it. (Which isn't to say that they can't do a lot to help, either.)
Top 10 companies winning at remote work culture and their secrets
As a paying customer, I see Evernote as awesome and terrible at the same time. I've enjoyed using Alternote on OSX as an Evernote client to get what I really want out of Evernote...a place to store, umm, notes. No chats. No web clippings and highlights. It's just notes I write, and associated attached media like document scans or images, in a clean interface. One of my favorite Evernote features is automatic OCR of images within notes. They do an excellent job at it.

I only use Evernote for my personal note-taking, and as much as I shake my fist at the massive clutter that has always existed in their first party apps, I can't live without it. (Notebooks AND Tags AND Search AND a map? Why?) It has never once occurred to me to use it as a collaboration tool. It boggles my mind why they would think this is something their customers want from them.

I've been using Evernote for so long the thought of having to move dozens of notebooks and hundreds of notes to another platform does not sound appealing!
Write messages on GitHub Profile
One thing Doc Searls points out is how direct marketing stole online advertising from Madison Ave.

http://blogs.law.harvard.edu/doc/2015/09/08/if-marketing-lis...
For real. This is so damn awesome I feel like letting out a Howard Dean like yell.
Interesting that engagement seems to be waning from a lot of Evernote users (based on this anecdatum and the article). Is it because the product has gotten actively worse, or do you find less need to use it these days (e.g. you realized it was more hassle than it was worth)?
And we slide into closed and centralized places ... that is scary.
It's even worse - classes in ES6 are just functions (their constructors); 'obj = new Class()' is just sugar for 'obj = {}; Class.bind(obj)()'. So if you leave off the "new", you'll end up clobbering whatever 'this' defaults to, which is usually the global window object.
I think the political problem that nuclear poses is very much part of the nuclear energy problem and should be considered a valid part of the discussion.
Given the date and the description of blocking ad banners specifically, my guess is that they were talking about an ad-blocking proxy like Internet Junkbuster.

These proxies weren't as easy to install as browser extensions, but they did a good job of blocking ads, and I remember similar conversations about The Future of Ad Blocking at the time.
I'm not against the idea of using maps for (almost) everything. It's definitely convenient and something I do in Clojurescript.

That said, I mostly use Common Lisp, and I really enjoy CLOS. As far as I can tell none of his examples would be any more complex in CL if the objects were CLOS instances.

It's definitely safer to use a slot reader in CLOS than the keyword functions that look up a value by key in Clojure. This is not helped by the fact that :foo returns nil instead of throwing an error if the key :foo doesn't exist in the map.
Unfortunately, Relay is significantly further from "just working" with push and write-once-run-everywhere-including-your-database query language, than Meteor is from "just working" with React. If you want a realtime immediate-mode-rendered web application without writing tons of boilerplate for data handling, and duplicating business logic in your server (i.e. GraphQL implementation) and client, Meteor+React has the edge today. You're right, though, that frameworks built on Relay+React will eventually catch up. I'm also looking forward to that day.
What is the point of a system that pays people less than a cent?
Why Pay for Apps? Get It for FREE  Unlimited FREE Access with New Apps Update
Man that stuff really drives me crazy. Putting releases is one faux pas, and the inclusion of every library required to build the thing is the other one that burns me up.

I have been known to take a copy of reposurgeon to strip out the binaries and demonstrate to the repo owner how much smaller the repo would be if one were to make use of an actual release or build process. I would be glad to fix every one of them I come across, if I thought I had any prayer of having the repo owner accept the new slimmer version.
Previously: https://news.ycombinator.com/item?id=10218637
I don't run ad blocker since 2009. I just got that good at ignoring ads. F12 + delete offending element works wonders for the most annoying stuff. And there are always hosts files.
We tried Evernote for business in our office for around 6 months. The sharing and communication feature-set was really bad. In a shared notebook we ended up with 'conflicted copies' of lots of important notes that really needed to be an authority on things. The 'Work Chat' feature is spectacularly bad and unusable - to the point of comedy. Most of us flipped way to using Google Apps and Keep Notes, which just really nails collaboration and keeps everything nice and simple.

In my opinion Google doesn't get enough credit for it's Apps offering. I see lots of articles on here and elsewhere that deride it as a 'search company' that 'can't build product' - but I really think they're quietly building an excellent product suite.
I use Evernote purely as a tool to store bookmarks. I could probably use anything else but Evernote generally suits my needs for that. Rarely, if ever, use it for taking notes or anything that isn't a bookmark. Best export my bookmarks if the story is correct.
Free upgrade to the new software Apple iOS9 from today onwards
Would've been nice if the article had pointed out that ad-networks have become a popular way to distribute trojans and malware using Flash exploits (though I'm sure when Flash is gone, ppl will keep finding other browser exploits ad's can exploit).
Watch Star Wars by Devon will cost $ 28,500
So what's the alternative to Evernote?

The article lists Google Docs, which doesn't really seem equivalent, and OneNote. I'm using OneNote right now to organize planning for a media/writing project, and the experience leaves a lot to be desired. The writing interface in particular is clunky, in the web client and on Android -- on my phone, I have to pop open a menu and then a drawer just to switch bold text on or off. And the Office365/OneDrive setup just isn't well integrated overall -- navigating OneDrive is confusing, and you can't, for example, insert a picture stored in OneDrive into a note.

Google Keep doesn't fit my needs, as it's missing support for any sort of real organization. It seems more geared toward quick digital post-its and todo lists.

Is Dropbox's Notes product any good? That seems to be in closed beta still...
Or people continue to provide compelling content for free, if only more temporarily.
Cursorio: place where you can easily find mouse cursor for your layouts
So the 'Daily Mail' makes the front page of HN. Interesting times.
Ask HN: Anyone in Tokyo want to hack?
Hey! I get to Tokyo on Sunday and will be there for 7-8 weeks. I'd love to meet up with some awesome local developers for a sprint / hack day.

My background is mostly in Ruby and I'm interested in doing more projects in Go. I'm also interested in playing around with the Github data dumps (https://www.githubarchive.org/).

If interested, post here or shoot me an e-mail.
Well technically, Fab had a $1B valuation and has died, so that's the first dead Unicorn right? ;)
If it has been abandoned, doesn't that mean that anybody can now use this idea? It is part of public domain knowledge now?
Extremely simple side-project made with Readymag that allows you easily find a mouse cursor that you need for your layout to show hover on some buttons or links.

Just grab it and drop it to your layout!
Simple is that!

Hope that it can help someone.
No more hard Google search as «mouse cursor png transparent real size» needed! :)
Space-X has a big order book, but that's not investment funding. That's potential future sales. Space-X only gets paid when they deliver a successful launch.

Space-X has had a huge future launch manifest for years, but they've never been able to keep up with their announced launch schedule. Now they no longer put dates on their launch manifest. Compare the current manifest [1] with one from a year ago [2] They're about 15 missions behind their announced schedule from last year.

[1] http://www.spacex.com/missions
[2] https://web.archive.org/web/20140917002523/http://www.spacex...
Benchmarks would be appreciated. As things are, this is neat and I'm curious to read more of the technique. However, I don't see this being used in either rapid prototyping or in hardened implementations. The first because you would just use a language that implemented regexes anyway; the second because performance is important.