skysight-inc/HackerNews huggingface dataset:
Doesn't matter; there are no technical details for this, and so far nobody has a solution on how to do this. Yes, permissionless networks exist; but no network has transitioned from a permissioned to a permissionless network. While transitioning from a permissioned to a permissionless network, you open your gates to a horde that are financially incentivized to exploit this newfound permission. How then are you going to secure yourself from an attack? Nobody has this figured out. It's mathematically unsound.
>PLT does not have any tools whatsoever to determine which language is more or less suitable and it is not interested in that question.

You are slightly off here. Look at [1], it views over a metric which correlates with language utility and provides 1) result of the metric applied to various languages and 2) reason why some languages can be more of utility (less errors, for example).

[1] http://www.cs.stir.ac.uk/~kjt/techreps/pdf/TR141.pdf
The greying-out of the above comment might suggest one reason people don't want to engage with the issue here.

In technical discussions on HN, people are allowed to bring up contrarian opinions and ideas.

In highly-politicized issues, people tend to line up on sides, and downvote accordingly.

There are legitimate scientists who think climate is a potentially serious problem, like many others, but neither a crisis nor an emergency. It's hard for them to get heard.
Love this! We Strive everyday at Routefusion.co to model our developer experience and attention to detail off of what Stripe has done. They turned credit card payments sexy, not an easy thing to do, but when you have great experiences like this and focus on a the builders of tomorrow I guess it works!
> My perspective comes from Hannah Arendt and her opinion that goodness demonstrated publicly necessarily becomes corrupted

I checked your profile for info to contact you privately to ask, but there wasn't anything, so my apology for the public request. Could you suggest any of Arendt's writings, especially around this subject? I've seen her referenced in interesting contexts and would love to read more.
There are upsides and downsides to being a reserve currency though that other nations might not want to take on, a non nation state currency that wants/needs to inflate might be a better bet.

The US built up on the good side of being a reserve currency.

> The advantages of reserve currency status for the dollar are well known. The world’s willingness to accumulate dollar reserves in the post World War II period first removed and later reduced the requirement of maintaining balance of payments equilibrium, or, more specifically, current account balance. By removing or weakening this restraint, U.S. policymakers had more freedom than policymakers in other countries to pursue strictly domestic objectives. We ran current account deficits year after year, balanced, or paid for, by capital inflows from our trading partners. The good side of that was that we could import real goods and services for domestic consumption or absorption and pay for them with paper, or the electronic equivalent. In other words, our contemporary standard of living was enhanced by others’ willingness to hold our currency without “cashing it in” for goods and services, or, before 1971, gold. [1]

The US is in the bad side of this process now and losing because of the reserve currency status.

> The bad side of our reserve currency status, although seldom recognized, was that the very leeway that enhanced our current standard of living built up debt (and/or reduced foreign assets) to dangerous levels. I remember well when, in 1985, the United States ceased being a net creditor nation to the rest of the world and, instead, became a net debtor nation. Our net indebtedness has only grown over the years, and hangs over us like the legendary sword of Damocles. [1]

Every nation knows that being the reserve currency comes at great risk and harms middle class and internal markets eventually. It might even be a fatal flaw. What other country wants to take that on other than one with decades and decades of growth ahead of them and an already robust middle class they can devolve.

Being a reserve currency helps build up the middle class and then when you switch to debt, which is natural as a reserve currency, it slowly widdles it away. US is scraping the barrel and the middle class is all but tapped, stagnation and lower purchasing power since the 70s in lower/middle class is evident. Worker share of GDP being on a long dwindle down [2] and velocity of money is off a cliff [3].

[1] https://www.forbes.com/sites/bobmcteer/2013/09/05/reserve-cu...

[2] https://fred.stlouisfed.org/series/W270RE1A156NBEA

[3] https://fred.stlouisfed.org/series/M2V
http://archive.is/IhGTh
> ... We thus attribute our light-based signal injection results to mechanical movements of the microphone’s diaphragm, which are in turn translated to output voltage by the microphone’s internal circuitry.

Aside from the security aspect, this is a pretty cool example of applied physics.

The paper doesn't appear to report anything else on this effect, but AFAICT, it's new. The Wired story described two hypotheses, one of which involved the laster heating the air immediately above the microphone, simulating a sound wave as the light amplitude is modulated.
Our universe is more complicated than e.g. a vacuum Schwarzschild black hole spacetime.

For starters, there are probably lots of black holes in our universe (and even in our galaxy). What happens if the unfortunate friend falling into the black hole is being watched from an orbit close to another black hole?

(General Relativity has the somewhat frustrating property that adding a black hole to a black hole spacetime does not obey the principle of linear superposition, so things can get quite messy if the two black holes in the paragraph above are close together. One can get even kinkier, for instance by considering a stellar-mass black hole orbiting a supermassive black hole, and kinkier still if both of them rotate with unaligned rotational axes and/or with opposite spins.)

Next, the metric expansion of space means that an isolated black hole would be more like a Schwarzschild-de Sitter solution. There we have the problem that two widely-separated observers can be highly cosmologically redshifted with respect to each other even if neither is anywhere near a black hole. One can of course also consider a collapsing universe in which two observers are blueshifted with respect to one another, and one could consider what that blueshift would do to observations by A of B if B were falling into a black hole in the collapsing universe.

Moreover, the presence of matter can make a mess of things. One can contrive an arrangement of matter near to a black hole which is sufficiently dense as to offset the gravitational time dilation of someone near the horizon.

Finally, there's kinematics: we can subject the unfortunate friend and the observer to a relative ultraboost wherein the doppler blueshift undoes the gravitational redshift.

A relatively ultraboosted Schwarzschild black hole would look a little odd to the relatively ultraboosted observer: https://en.wikipedia.org/wiki/Aichelburg%E2%80%93Sexl_ultrab...
Things get weirder when you add other black holes, stars, dust, and so on to the Aichelburg-Sexl picture.

> From the outside, time does not appear to pass at all inside a black hole

From outside the event horizon of a static black hole there is no way to tell, even if one uses tricks like the above to do away with the objection that in general time appears to come to an effective standstill infinitesimally outside the horizon.

However, if the infaller brings in significant mass or angular momentum, we would expect the horizon to reflect the internal configuration change, since it's the internals that generate the horizon in the first place. This is a dynamical rather than a static (up to tiny perturbation) black hole.

This is extremely fiendishly difficult, and is run into in practice in terms of trying to work out exactly what the full theory says about the final merger of two black holes. Roughly speaking, the gravitational interactions between two merging black holes is best described by a metric wherein there is an effective third (and sometimes fourth) body.
Who? I have tried with a couple of other brokerages, but found the entire UX to be absolutely horrendous.

As much as RH is in the news for screwing up, I think that they have stumbled onto something that the more established brokerages either (a) just don't get, or (b) cannot replicate without the risk of losing existing customers.
Tiny brains don't stop these birds from having a complex society
All the CEO's care about is next quarter. Five or ten years isn't even on the radar at most companies anymore.
Okay, thought experiment time: how far back can you do this with Linux? I mean, obviously with enough effort you can make Yggdrasil to modern era, but like, without dropping into a root shell?

I think you can probably get from ubuntu's release to current. But I also happen to know they 'supported' upgrading from Debian to warty warthog. And I've done a few Debian OS upgrades, so that's also doable. Possibly all the way back to 1.1 released in 1996. Can you upgrade from something else to Debian?
I was surprised Apple didn't crack down harder on non-Apple iTech. That was legitimately confusing.
I was quite surprised to see a Sun article on HN today. Been a member as soon as I moved to Denver last year and have loved seeing it be such a high quality source of journalism.
libarchive use after free vulnerability
Plus, a lot of new library and language features are simply standardized versions of features that mature codebases had their own solutions for years, so "upgrading" to a newer C++ may also imply a long process of deprecating these alternatives in favor of standard ones, and the subtle differences between the two can expose new bugs and issues.
I absolutely hate how such articles are designed to make most readers feel guilty, while not offering any realistic and quantifiable action plan. Nope, the average reader of this will not give up their plans on having a family, to delay the global warming for the less environmentally conscious part of humanity by a couple of milliseconds. They won't change their lifestyle from living in a house, traveling to events and eating tasty food to suddenly sitting in a 100 sqft box and eating sustainable pea soup every day. What those articles do is give more votes to the green politicians, whose platform often consists of taxing things people enjoy and spending that money to produce more fearmongering articles. So instead of a small shop owner flying with their family to a vacation in Hawaii, the same plane seat will be taken by a politician flying to a climate change conference where they will commit to spending more taxpayer money on creating committees, publishing papers and making sure as many people as possible vote green.

On the other hand, there are not many articles on addressing climate change from an engineering standpoint. How much of the CO2 emissions come from burning gasoline? How much of that CO2 could be trapped back by switching to biodiesel? What would be the CO2 output of producing the necessary fertilizers and compensating for the increased corrosiveness? Are there better ways of trapping atmospheric CO2 in something that can be easily loaded into a gas tank in 5 minutes? Can we compensate the greenhouse effect by emitting some reflective particles into the atmosphere?

There are plenty of quantifiable and constructive ways to to reduce the global warming that would actually require research and collaboration across the board, but somehow instead we are stuck in a loop of guilt and are fighting on who should get blamed and taxed for something we are not yet solving.
What's even more efficient now is solar panels running a heat pump.
Sort of, for some value of zero. After a couple of decades of steady work in tech, I had a personal, overwhelming circumstance arise that I knew would kill my productivity (or worse). I resigned my job and did what I needed to do to get through it.

Then started hunting for a new job. As I came to realize, having quit a job without first lining up a new one does kind of put you at zero.

Did eventually find a nice (albeit low-paying) job. No regrets, though. I did a great thing for myself. And I suppose I do feel a certain righteous schadenfreude every time I hear hirers complaining that they can't find anyone good anymore.
Julia is the first language I've worked with that really tries to eliminate all abstractions between math formulas and code AND keep things efficient. LISP and Haskell also have great looking numeric code but I have a hard time figuring out what's efficient and what isn't.
> The OpenTitan project is managed by the lowRISC CIC, an independent not-for-profit company with a full-stack engineering team based in Cambridge, UK, and is supported by a coalition of like-minded partners, including ETH Zurich, G+D Mobile Security, Google, Nuvoton Technology, and Western Digital.

So much for this being a Google-led project with evil intend.
> So, can you name a single Republican politician or not?

I did, though there are more.

> I'm still waiting for a name and a winning campaign from this century.

Nice moving goalpost, but George W. Bush’s 2004 campaign (where social security privatization was a central theme) still counts.
Shopping in the US, is akin to asking the Genie for 3 wishes.

It is deceitful, regardless.
Depends on your needs. If you don't have a lot of or any legacy code yes, go straight to c++17 (or even 20 though you won't be able to use many of the features right out of a the gate, or without third-party libraries). If you can do this you'll be glad you did.

I was able to start a project in c++17 in 2016, though at the time I had to use boost::variant with the Xcode compiler and boost::filesystem for all three compilers (only a limited use so I could even have skipped it). Also for some complex third party libraries I had to make a little trampoline file that compiled in C++14, or with special flags, and then call those entry points.

Since I was starting from a blank slate I also compiled everything with pretty much maximal warnings an -Werror which really improved the code a lot, something you can never get away with with legacy code (not to insult working legacy codebases!)
Like I said. A lifetime of not paying your bills.
The title says "protesting" but that's not what is happening.

Group of workers they made a request and wrote a letter asking for release a company-wide climate plan that commits to cutting carbon emissions entirely.

The most depressing thing is that people don't read the articles posted.
I get that, but if Bitcoin is integrated into Facebook messenger then it would also see a huge boost in users.
> will

Can. It is isn't a certainty for those that understand, but if you don't understand that will is probably correct.
I've always wondered why Braille is in the sequence it is. I would expect an almost binary counting style sequence looking at it, but it always seems so randomized. Why does A have one dot, B a dot below A but C has the orientation of the dots changed? I'm sure there is a practical reason to not have C be three dots in a line but I'm not sure what it is.
A new way to date rocks
The entire strategy for dollar stores (Dollar General, Family Dollar, Dollar Tree, etc.) is to out price their local competition - hence why yours is right next to a grocery store.

They carry higher-profit margin goods, which are mostly canned and processed foods, but ditch the lower-margin items like fresh produce. Grocery stores can't compete with them unless they also ditch their healthier foods.

There are entire communities in the U.S. who don't have access to fresh produce but do have access to five dollar stores. There was an interesting planet money podcast on it called "Dollar Stores vs. Lettuce".
Coming next to backcountry: commingling.

Yes I have purchased climbing equipment on Amazon but I always felt bad about it.
It's not ok to use HN for regional flamewar here, or political flamewar. If you'd please review https://news.ycombinator.com/newsguidelines.html and not post like this again, we'd be grateful.
A Programmer’s Guide to Performance Analysis and Tuning on Modern CPUs
In the Twilio world, I can do something like this, via the command line and their API:

- activate new phone number

- send SMS from that number

- deactivate number

I have not ever done that particular workflow, but I could.

Who is the Twilio of payments/fintech wherein I could perform a workflow like this:

- generate new CC number in my name

- set transaction limit(s) and expiry 10 days from now

- (go use that CC in real life)

- deactivate the CC

or maybe:

- disable existing card

- reenable existing card

I know I could do this if I wrote the API myself and had a big, complicated, sticky relationship with a bank ... but does someone let me do things like this if I am just an end-user (like Twilio does) ?
> I don't think that's the main threat Bitcoin is designed to defend against, though; I think there's a whole spectrum of confiscation threats, ranging from thieves tunneling into bank vaults (I know a woman here who lost her savings that way), to immigration authorities confiscating jewelry, to pirates, to trumped-up "money laundering" charges. And of course if we're mentioning Germany and World Wars, we must not forget the confiscation of Holocaust victims' entire possessions, including jewelry and fillings after the gas chambers. Bitcoin can't make genocide impossible but maybe at least it can make it unprofitable.

You cannot mean this seriously. Every example you write is worse for bitcoins. If your coins are stolen, that's it, you can pretty much kiss them goodbye. If the government wants to confiscate someone's bitcoins, they will beat the private key out of the holder with a $5 wrench. If WW3 breaks out and the world order collapses, a wholly digital asset that relies on a large network of high upkeep, high-tech infrastructure is surely not a particularly safe bet. You can bet that datacenters will be among the first casualties in such an event, whether outright government confiscation or a denial of service attack by the enemy.

If a bank gets robbed, for most cases it won't impact account holders at all. Even if the bank goes bankrupt, there are various government schemes that will cover account holders up to some limit (e.g. $250k currently for the US). There is none of this for bitcoins. There could be of course, but then the argument is: what do cryptocurrencies actually offer beyond what is already possible with normal currencies?

To the best of my knowledge, the only practical benefit of cryptos is that they completely sidestep KYC/AML regulations and therefore one can easily move money between regions that draw regulatory scrutiny. Countries with at least semi-modern banking infrastructure already have instant transfers so let's not bring that argument up. In any case, that's not a feature uniquely enabled by cryptocurrencies.

The fact that bitcoins are deflationary I consider a bug, not a feature. Perhaps history will prove me wrong, but in my opinion money is not supposed to be an investment asset. People should not hold cash expecting it will appreciate. It should be reinvested as much as possible.
How do you deal with passing common data between services? For example, does every service checking the holiday endpoint need to write its own access/deserialisation/mapping starting from http or some other RPC layer? If yes, how do you keep that in sync/compatible? Do you have an explosion of versions on each endpoint?

This is likely trivial for the holidays endpoint, but I'm interested in the more complex ones.
This might make for an interesting relationship between the paper and the LDS Church, which is itself a 501(c)3 that gets involved in politics a lot.
You also need to pay interest on the leveraged margin, so on the long term you'll lose more money on interest than you'll gain.
“Some years ago I opined that London was not really an English city any more. Since then, virtually all my friends from abroad have confirmed my observation So there must be some truth in it.” -- John Cleese

In that sense, perhaps London remains a European city while still the capital of a not really European nation.
I think demonizing and banning psychedelics was part of a larger scheme to find reasons to lock more black people up. Because that’s ultimately what the drug war was and is about. Best thing we could do is wash our hands of the whole thing, and try to revert our criminal justice system back to the state it was in prior to prosecuting the Drug War. Based of today’s political atmosphere, I don’t have a whole lot of hope for it, but at least as far as weed and psychedelics go, we’re starting to see something of a correction that will remove them from the scope of the drug war in time.

I think you could make a good case, I don’t know if it would be a winning case today, but I think you could make a good case along those lines in the courts. That said, I am incredibly unfamiliar with psychedelics and either their history or culture so I don’t want to say more than that.

I will say that if a substance were banned for blatantly religious reasons, I don’t think SCOTUS in any age would have upheld the ban as Constitutional. There would have to be a non-religious reason for the substance controls.

I for one would like to get the government out of the Drug War business though. It’s done, it’s a drain on the Treasury, it’s explicitly racist, and it actively distorts our civil and political institutions.
Yeah, it is, given they've done the analysis and reported on how likely it is.

If you have thorough refutation prepared, I suggest you publish. So far your argument appears to be "nuh uh"
The political flamebait in your last paragraph breaks the site guidelines. That's not ok because it leads to flamewars, as it did—wretchedly—in this case.

If you'd please review https://news.ycombinator.com/newsguidelines.html and edit that out of your posts in the future, we'd be grateful. Your comment was great otherwise.
This paper is related and interesting: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p186...
Boom Roasted. That was enjoying to read. I wish most of this didn't go over my head, but I enjoy it nonetheless.
https://blog.firosolutions.com/exploits/libarchive/
Ask HN: Why aren't more native apps compiled for ARM aswell?
The new Microsoft Surface Pro X seems to suffer heavily from a lack of ARM-compiled apps.

I am not much of a developer (light web-dev) and do not understand why this is so hard to provide. Don't most compilers support ARM at this point? What prevents adoption at this point? Who's working on this issue?
Nanorheology of Interfacial Water during Ice Gliding
Some first order guesses:
-Have lots of blades on the same rotor so the assembly can turn slower
-Put the tail rotor inside a shroud
-Having a smaller rotor might help, since the spread in air speed across the length will have less variation (less sure if this would help)
-Turbine engines can be pretty loud, I'm guessing the same is true of other powertrain components. Maybe put the loudest stuff on the roof.
I don't recall a clear causal link being drawn beyond some favoring off cells with inhibitions in apoptotic pathways being more likely to successfully undergo crispr knockout- certainly a risk but nothing like what you're suggesting with that strong statement. Can you elaborate on your point? I'd love to learn if there was any more research into that, it's an important question for sure.
Awesome video from Bell Labs. Watch it if this topic interests you.

https://youtu.be/gf2J3HTYUHE
I suppose the next generation of MEMS microphones can contain photodiodes to mitigate this attack.
not even the most pessimistic IPCC projections describe it as an existential threat. youre buying into hype instead of science.
What does living on a farm have to do with urban planning?