skysight-inc/HackerNews huggingface dataset:
> The new calculation indicates that for ordinary sound waves in most materials, the mass carried is equal to the sound wave energy multiplied by a factor that depends on the speed of sound and the medium’s mass density.

Since the effect is proportional to the density of the medium, you can't get actual antigravity. The mass is always positive. It can just be lighter than the other matter around it.

Practically speaking, you definitely can't use this for levitation or anything. This is E=mc^2 stuff; you need far more energy than conventional levitation would take. The energy in normal sound waves is very low, so high energy sound waves are very destructive.

For reference, the reference level sound intensity is 1 picowatt per square meter. That's zero decibels, the human audible threshold or the quietest sound we can hear under ideal conditions. A conversation is ~60 decibels, or 1 microwatt/m^2. Hearing damage comes at >90 dB or 1 milliwatt/m^2. >140 dB is quite painful, but it's only 100 watts/m^2. A household extension cord can carry about a kilowatt in less than a square centimeter- millions of times more power.
That's an ironic claim on this platform. If you make $200k/year (normal high tech comp, probably not far from the average person here), save $100k/year and average 6.5% returns over 10 years, you have $1.4M.

You can then on average draw down $63k/year assuming 2% inflation to retain your purchasing power until the end of time. That's very comfortable if you're just willing to not live in the bay area or NYC.
Your comment makes no sense whatsoever. Let's say you're an NSA target. You're probably already hacked. If not, then you are very smart or you haven't been an NSA target for long. Let's assume you're a very smart malware researcher - that means you 1. Already have tools like IDA and don't need this, 2. Have an in depth knowledge of how to acquire and run potentially malicious code safely, 3. Have experience figuring out if that code is malicious.

Do you think the winning strategy for the NSA here is to attack you in a way that you're perfectly equipped to deal with?
Useful Libraries and APIs for Java Developers
I do list stuff on Facebook Marketplace. You still have to create a "proper listing": you have to take photos, and you have to do some kind of write-up if you want to actually succeed in selling it and getting a decent price. Listings don't post themselves.

For a phone, yes, $7 or so will ship it anywhere in the US with a USPS Priority Mail small flat-rate box. But for anything larger, the costs go up; I was kinda talking about the general case of selling any of your stuff on Ebay.

I do agree you'll make out better than some trade-in program if your item is small and high-value and you're willing to put in a little bit of work to list it, take some photos, etc. But my point was that many people are too lazy to do this work, especially people who value convenience over saving money (which describes Apple users to a tee).
Google Chrome exploit with a full sandbox escape found in the wild
In general, highway infrastructure was routed through minority neighborhoods to bulldoze them to the ground.

Today, poor minorities get forced to live in the lowest value land, which is usually right alongside major roads. The lack of safe pedestrian facilities means that these neighborhoods have higher levels of pedestrian fatalities: https://www.inverse.com/amp/article/26210-pedestrian-deaths-...

Because they live alongside major roads, they also suffer from higher rates of respiratory disease from air pollution. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4454972/
Thank you. I'll show more features and how it works on the homepage.
I already asked about this in the parent post that refers to Erlang, but do you happen to have a write up by any chance, where you go into more details. I’m super interested! It would be really appreciated. (This is not the first time I hear people praising Erlang in comparison to popular OOP languages)
I can't speak for others, but I know that, and I think that it is consistent, rather than inconsistent, with my points 1) that Scheme is fine as an academic language and 2) Common Lisp is preferable for real programs.

Scheme's simplicity is awesome if you're implementing it; it's awesome if you're learning it; it's not so awesome if you're trying to actually use it. As LoL notes, it's dumb to throw away information in conditionals. As LoL also notes, hygienic macros are toys and DEFMACRO is generally what you really want. I'll add that having only a single namespace for variables, classes, functions, types, packages & everything else means that you end up having to be extremely verbose: foo, fooClass, fooFunc, fooType, fooPackage. call/cc is incredibly cool & powerful, but also really hurts efficiency in a way that I don't think is acceptable in a production system (it's fine, of course, in a teaching language, because the experience of understanding it is really useful). dynamic-wind is broken compared to UNWIND-PROTECT.

And on & on & on.

Steele also wrote the Java spec, and he wasn't wrong when he said 'We were not out to win over the Lisp programmers; we were after the C++ programmers. We managed to drag a lot of them about halfway to Lisp,' but I don't think in 2019 anyone thinks that his involvement with Java means it is anywhere near as good, powerful or acceptable a language as Lisp.
Store it in salt domes for use on U.S. roads for the inevitable ice age-level snow removal that we will have to contend with. Seriously though, i would guess that this remaining salt is likely not suitable for food preparation...but can't it be used for salting roads in winter? Or, perhaps, maybe in molten salt reactors/energy storage systems?
That sounds like a really interesting project! It could make the solving of issues really efficient.
I wonder if there are not well-know assisting tools of the same kind.
C++ match expressions would make std::variant a really nice alternative.

I assume there is already a proposal out?
The irony is thick here. All of this can be said about social sciences and gender studies.
Thank you. I will work on it
There was a weird time in the 80s when lawyers figured out they could sue light aircraft manufacturers after a plane crash, and almost killed general aviation.
Evidence Grows That Trump's Trade Wars Are Hitting U.S. Economy
How to Cheat at Xi Jinping Thought
I started my career as a designer and I agree with you in principle, but this site was really frustrating to browse. I closed it after looking at one photo because I didn't want to wait to see more.
They do too. Is not as simple as having money or not, the social fabric is the base of healthy neighborhoods and tourism is really invasive against that matter. I said a bunch of reasons there. The visitors should be aware of that. Why would we want to have more money if we don't have a place to live that we can call home? Or if those who are "pumping money" are making our life's more expensive while our salaries remain the same? I don't think you are addressing the problem from the vision of someone suffering the gentrification.
Pretty much a sum up of the Essentialism book. I recommend it to anyone who is interested in this philosophy.
I work in this space. The question that should be asked is how much power do I need to charge my devices? Am I charging my phone (18W) or am I charging my laptop (60W)? The technology exists to create a multi-port USB-C PD charger. However, is there enough market demand today to drive a company launch a product. Would the market accept a giant wall adapter, do to the space needed to dissipate the heat on a dual 60W charger?

I believe as more devices switch to USB-C PD charging, you will see more of the products you want on the market place. And technology will keep improving to reduce the size of the adapter.

I saw this on Amazon
https://www.amazon.com/Satechi-Type-C-Travel-Charger-Adapter...
What's a good small project + stack for someone to start with formal methods and/or program synthesis?
x2go for opensource or nomachine if you don't mind paying are good options.

They are better than X over ssh and usually a little better than rdp
I was hoping you had something to contribute to the conversation besides appeals to authority and PR sites.

> Bank of America (NYSE: BAC) is no stranger to paying fines. According to data compiled by investment firm Keefe, Bruyette and Woods Inc., the Brian Moynihan-led company has shelled out the most money in fines over the years, especially in the time span following the 2008 financial crisis.

> “Bank of America Merrill Lynch went to astonishing lengths to defraud its own institutional clients about who was seeing and filling their orders, who was trading in its dark pool, and the capabilities of its electronic trading services,” New York Attorney General Eric Schneiderman said Friday.

https://www.bizjournals.com/newyork/news/2018/03/23/bank-of-...
Don't forget spread the free weekend days randomly between companies.
So you understand the essence of art, and you're saying experimenting with machine learning as an artistic tool should play no part -- it's out of scope?

Have you read the book Hackers & Painters [1]? http://www.paulgraham.com/hp.html

Do any of these other Arts & Culture Experiments speak to you? https://experiments.withgoogle.com/collection/arts-culture

[1] https://www.amazon.com/gp/product/0596006624
Teach Programming to Become a Better Programmer
Related: Where's My Flying Car? Coming in for a Landing Soon

https://news.ycombinator.com/item?id=19318425
Users are too confident in their protection from threats
I wish people would stop using the term Aztec because there are no Aztecs known to us. Aztec was the slave name of the mythical civilization that took part on the exodus. They are mexicas not Aztecs.
There was a startup that aimed to "help people buy property together"[0], although it looks like it was dissolved in May 2018[1] (despite the web site still being up). (Side note: I wish companies that were no longer operating would shut down their websites - there used to be a mirror shop near where I live that still has a website listing its address and phone number, and is still near top results for a search for mirrors in my area, despite the shop having been shut and the building demolished nearly a decade ago.)

[0] http://neatsplit.com/

[1] https://beta.companieshouse.gov.uk/company/09581451
I'm afraid you do not understand correctly.

When I started to become concerned about the mass weaponization of autonomous systems I looked into what was actually happening in the field. Tesla is by far the safest out of any consumer-car company with respect to cybersecurity. (Waymo is safer, but their cars aren't in the possession of consumers yet.)

There are some other car companies (e.g., Audi) that are better than others, but many of them are downright disasters. Because many large car manufacturers refused to sell tools to engage the software that is used in cars, but mechanics want to interact with it anyway, what they've resorted to doing is relying on third party diagnostic tools. Most of the times these tools are running some horrible out of date version of linux or, if they're lucky, an Arduino.

Many of the components within automotives are vulnerable. Ironically, some that tried to take safety seriously often bought into promises from vendors that didn't work out as expected. For example, QNX was damn vulnerable (broken SRNG, admin password backdoor, etc) and it's in countless subcomponents of vehicles of many types, including cars, but also military tanks and freight trucks. (I've even heard that it's been used in scarier stuff, like nuclear power plants, but that's third hand.)

Anyway, I don't have all the answers or information, but at least as things stand right now, I'm with Tesla on this one. The last thing we want for our computerized cars is Joe programmer teaming up with Jane mechanic thinking they know what they're doing when they don't.
I like your suggestion. The message is joyful. If you don't mind, can I use your sentence?

Just kidding, I should come out my own version.
> + is not commutative for lists, tuples, or dicts

Yeah, that's a good point. I think I was thinking on the type level rather than the value level, but I am unsure that makes a convincing argument for the behavior here even if it is otherwise true (which I’m not sure it is always, even at the type level.)
Exactly. The writer of the article seems to be mystified and shocked by the (very predictable) outcome.
Who else thinks that this autism was caused by this school and the fact that this guy believed, for some reason, that he deserved such treatment ?
So have many people in the US. However, I also don't think people should act like VC is a four letter word.
>pending tens (hundreds?) of thousands of $ on apparently unserviceable cars

If you read the article, his net cost for the one Tesla he drives was $6500. This is because he bought two junked cars for about $30k, assembled the one "Good" car out of the combined parts, then was able to resell the remaining duplicate good parts for the difference.
pointless forest
I requested desktop site and then from there I read them one by one, tapping the “next” links. It was very readable IMO but I am used to having read cartoons online before that you navigate like this so.
That's OK, bird numbers have gone down significantly over the decades [0], they'll soon not be a problem.

[0] https://www.rspb.org.uk/birds-and-wildlife/advice/how-you-ca...
Awesome, thanks! Didn't hear of either yet.
> Google built a hugely successful Operating System ( Android ), Web browser ( Chrome ) etc because it was important to them that nobody won these platforms.

Or was it important to them that they win? They certainly seem to have with Chrome at least. Does any company intentionally enter a space just to compete? Would google rather not absolutely win in the infrastructure as well?
The example code the author comes up with:
https://github.com/dpugson/examples/blob/master/chpt1_the_vi...

Which implements the pseudocode:
https://cppcrypt.tumblr.com/post/168134402897

main {
thingies = [ purpleThingy, littleThingy ]
interactions = [ commentOn, cherish ]

for (interaction in interactions)
for (thing in thingies)
interaction.interact(thing)
}

The author does mention things like "function pointers can be used in simple cases" and "std::variant would avoid the need to overload the method". But the main reason for having the C++ code the way it is is because "you can't dispatch to overloaded methods at runtime".
https://cppcrypt.tumblr.com/post/169439207562 ff.
According to someone farther down in the comments here, India has no DST and simply starts school later in the winter. I guess that's just too hard for America?
Yes, as I said this one's particularly slow, most transitions should be sped up. However most of them make sense, they're just way too slow.
> Notable exceptions include a lot of Microsoft software, unfortunately. They used to be better about it but they've become exceptionally lazy about it lately.

I don't believe I've ever used a Microsoft product that offered installation via zip files in addition to installer. What are some examples?
I don't know. Don't get me wrong - I like most of the changes. The thing I miss in the final result you create is the presence of "last edited date".

I am a console guru, as such I actually run most of my github (yes github, not only git) interactions from within Vim or the "hub cli".

When I need to actually visit Github, the primary thing I do is look over the shoulders of a colleague and pointing out specific files. It is super convenient to have the "16 minutes ago" at the end of each file or directory, since I can basically just ask the colleague I'm helping to follow the "16 minute" pointer as a rabbit hole to the file in question (without bothering to remember the actual file name).
Thank you so much. I should be aware of that.
Could it be CO2 build-up in your bedroom?
Ghidra Capabilities – Get Your Free NSA Reverse Engineering Tool [pdf]
In most of America it is illegal to build a pedestrian oriented town in the fashion of the old colonial New England towns or the small towns that dot railway lines along the east coast. In fact, in most of America it is illegal to build a building without parking at all, or a building with retail on the ground floor and apartments or offices on top. It is thus illegal to even consider alternate built environments for the majority of Americans and the choice is not available in the market to begin with.

The one signal we do have is price, and price per square foot in walkable neighborhoods is higher than in unwalkable ones. https://www.cnbc.com/amp/2014/06/17/a-citys-walkability-driv...
Interesting, possibly flawed analogy: The Build Your Own Lisp book explains how, and the LoL book explains why. Build your own lisp book is the natural pairing for LoL, despite many people claiming it goes best with Seibel's common lisp book or whatever.

Seibel's book is good, don't get me wrong; I just don't think its the proper pairing in the sense of culinary arts putting together a plate of well paired books.

The common lisp people and the clojure people fight viciously as only siblings can; this will infuriate those in the common lisp tribe but the ideal introductory lisp book in the general sense of the language is probably not Seibel's book its probably the comedic Clojure for the Brave and True. Not aware of anything quite like that, for common lisp.
Exactly! And a cup of coffee is my trigger!
So for BofA the first two results for "Bank of America Money Laundering" are:

from July 2012
[1] FBI: Drug Cartels use Bank of America to Launder Money

and Nov 2018...
[2] Deutsche Bank, BofA, JPM Drawn into Danske Money Laundering Probe

Both make for good reading...
[1] https://mic.com/articles/10959/fbi-drug-cartels-use-bank-of-...
[2] https://www.insurancejournal.com/news/international/2018/11/...
An Open Access Wireless Market(2016)
http://www.cramton.umd.edu/papers2015-2019/cramton-doyle-open-access-wireless-market.pdf
DST causes trauma for people with bipolar disorder, heart attacks go up, etc. Also, on a selfish note, it's irritating to program around.

DST is a legislative solution to the problem of getting everyone to change scheduling. So why not use legislation to get those school boards to change scheduling directly?
Ghidra Software Reverse Engineering Framework
No one is forcing you to wake up at any particular time. If you want to wake up when the sun rises, you can do that. You don't need to control everyone's clock to do that.
Excessive maybe, but not false, and only to counter his blatant miscategorization to which I was responding. I underestimated the support for JDP here, which is my bad but I am happy to defend him. My mother is an anthropologist. The social sciences are flawed in many ways but JDP fully acknowledges and navigates this. If anyone has better ideas or conclusions than he does please share. He wants to know. We all want to know. But if there is one thing a man answering his calling deserves is respect.
Simple jokes from a simple man... I laughed anyway.
Yup, this data is the equivalent of dumpster diving to see what people are eating.
Don't really understand how this is anti-trust behavior. Is a company not allowed to choose whom it's selling its products to?
I have the same problem. The more I sleep past 7 hours the shittier I feel for roughly the number of overslept hours. If I sleep 12 hours, I'll feel foggy and groggy for 5 hours afterwards (12-7=5). I think it is serotonin related.

I force myself to not sleep more than 7 hours.
If it's your GP, they're really not the expert though when it comes to psychological issues. If you're expecting your GP to do more for that than offer medication or a specialist, you're probably asking too much.
I don't understand why the class instance needs to accept the interaction. Why not just invoke the interaction directly?

interactor_p->interact(thingy_p)

Would this still be considered the visitor pattern or is the extra layer of indirection important?
Why John Urschel Chose Math over Football
25 minutes interval is recommended but you always can change the interval to longer to suit yourself.
I never recovered from the addictive ADHD medication I was put on as a child.

I'd rather have been allowed to fail out of school than grow up a straight-A Addict.
This recently happened to a Kobo e-reader I bought in 2013 and have been using happily. On March 1, the company announced some firmware upgrade that I was required to install to continue even using the device. This was not a security patch and wasn't related to the ereader's core functionality. We're talking about a $50 ereader that only connects to my laptop once in a blue moon to transfer EPUB files.

Can't use it anymore without installing a firmware upgrade now. Turns out, I have a license to use the device, just not to own it.
They certainly seemed to be very much against selling it to private individuals (or were when I asked many years ago).

I guess unless you've got a CV which says "presented at Defcon and Blackhat, five times" or "currently work at {big infosec company}", even if you can afford it the answer will be "nope".

The end result for me was that I bought a Mac Mini and a copy of Hopper and Synalyze It. My entire reverse-engineering of the Polaroid film recorder driver (and the resulting Linux port) was done by reversing the driver DLL in Hopper and shimming the driver and ASPI calls with PyDbg.

I keep looking away for a month or so and finding a new version of Hopper with shiny new features to play with...
When Plasma Becomes Another Fruit of the Vine
It's intuitive to try, but it's not obvious what it actually does when keys overlap.
Some people are even claustrophiles. Isaac Asimov was a famous one. Being in tight spaces makes them feel safe, although being actually stuck may not have the same effect.
If you run in debug mode it listens on port 18001 allowing for RCE on host machine
Using PyInstaller to Easily Distribute Python Applications
Calling The Verge “independent” is a bit missleading.
It spots copy paste? And reproduces a code change on all the occurrences?
No. Same thing happens if the window is left ajar.
No, it's them, not the clock. The people of Spain are in control of their own clock; they're not a dictatorship any more. If they want a better timezone, it's in their power to make that change. If they're stupidly using the wrong timezone and eating meals at a late hour because of that, it's their own fault.
> Moving to summer time year-round means that the mornings in the winter will be darker

The US is already on DST most of the year, so permanent DST is simply the minimum-change method of abandoning clock shifts.
I lived with room mates for nearly 20 years. I would have made a lot of money if I bought with them instead of renting, so I can see the benefits of this.
This was in reference to Binary Ninja, which was neither released at RSA nor is Open Source.
works ok on firefox desktop
This post made me look up the Philip Glass opera to see if the 2016 ENO production has ENO ally released a DVD, and it looks like they’re coming to NYC!

https://operawire.com/a-philip-glass-opera-confirmed-for-met...
I'm sorry to hear that. I'll look into that issue and update you once it's resolved.
..and this is what the "adoptions" talk was a euphemism for during the Trump Tower meeting

[1] https://en.wikipedia.org/wiki/Magnitsky_Act#Ban_on_U.S._adop...
There's no information about price. I heard that lidar's price was a massive problem for their mass adoption and the reason why Tesla try not to use them for self-driving cars. If its price would be signinficantly lower than other lidars, it would be a real breakthrough.

Any idea about its price ?
The Solemn Joy of Lent