skysight-inc/HackerNews huggingface dataset:
Epoxy-coated steel rebar has the problem I mentioned, as well as being more expensive than standard rebar. You can remove the steel and use non-corroding materials, but these tend to have significantly less stiffness than steel (and reinforcing stiffness determines the load-to-crack-size ratio)
Learn linear algebra properly. Like many folks on HN, I really enjoyed Axler's Linear Algebra Done Right, but ymmv. I got a ton out of going through each of the proofs + practice problems and really taking the time to work through the solutions. It wasn't enough for me to just read the text.

There's a linear algebra lurking everywhere in the realm of applied math (some people like to joke that machine learning is really just linear algebra) so it really is worth your time to have a firm understanding of it.
The slow progress is not an indictment of self driving. This is one of the toughest engineering challenges ever mounted by humanity.
Stranger then Fiction, you couldn't make it up, no one would believe it:

“This tendency towards pseudoreligiosity surfaces most clearly in Campbell’s relation with that mountebank and founder of exploitative cults, Hubbard”

L. Ron Hubbard had a talent for grifting people. Later on he joined Jack Parsons magical order 'Ordo Templi Orientis'. At Parsons Pasadena mansion, Hubbard and Parsons engaged in the occult task of raising a moonchild, before Hubbard ran off with Parsons money, girlfriend and yacht. There's a fictionalized version on 'CBS All Access' called "Strange Angel". Hubbard turns up at the end of season 2.
Holy fuck this is a stupid idea.
Udacity Welcomes Gabriel Dalporto as Our New CEO
Bullets, bombs, and missiles are produced in quantity with a long safety-assurance development and learning cycle. Mistakes are known to have happened.

Sensitive electronics are small-batch (if not one-off) deployments. Mixing volatiles and circuits with confinement and altitude tends to put a lot of risk adjacent to extremely low tolerances for out-of-range behaviours.

At the very least, that's an argument for using a Standard Thermite Pack separately packaged (and possibly with separated incredients and factors) which could be applied as needed, when needed.

Or some equivalent mechanism.
Cool a mini space shuttle that is still flying around for testing stuff. Any chance it has seats and can be used for rescues?
ARM isn't going to license their GPUs to a competitor.
> true social justice

What is "true social justice"? If you ask ten people, you'll probably get ten different answers.
^ This is so wonderfully naive, I'm at a loss for words.

https://www.jacobinmag.com/2017/03/russia-us-clinton-boris-y...
While true, Iron is much more accessible than Lithium. Which potentially would make it cheaper per pound (eventually). Today that’s not the case, but with time, who knows. Still interesting.
Maybe, but as a pilot you are tested in depth in systems to a degree not found in automobiles.

Aeronautical engineers also miss a lot of the skin in the game that a pilot would have.
The 150 cycles is a killer, as is the energy density in certain circumstances, But for something less space conscious like home or commercial energy storage would it matter if it's (I assume) cheaper? Even 150 cycles might be fine for things that discharge very slowly, like a battery in a fire alarm.
This is the upstreamed version of the code that Netflix uses on its Open Connect CDN. In addition to software crypto, it also has support for inline hardware TLS offload (eg, where the NIC encrypts the stream as it is sent).
Where in Toronto? I don't really notice this phenomenon.
Maybe learn about stoicism. I have two children, and watching them experience life for the first time is the most fulfilling thing I've ever seen. I was 38 when my youngest was born, I'll be 40 in November.

Stoicism teaches that we all will die, and true death is when we're forgotten, but more than that we need to only worry about the things we can change, or the things we have 'some' control over, but stop worrying about stuff we have zero control over. Another teaching is that if you focus on the fact that you're just worm food, for a few minutes every day you can learn to appreciate the small time you have hear.

Given, when I was in the grips of depression I shared your nihilism about forming bonds, and I'm still an introvert, and I used to be religious (Mormon), now I'm agnostic, though I think there's a 5-10% chance of an afterlife (our mind is just energy right?), I do not think a supreme being exists --especially a narcissist who demands fealty and worship.

Trust me if you ever do settle down and have children, it'll change you. Also -- you learn that even without an afterlife there is still so much beauty and inspiration in this world to appreciate. Think about it, you've been given a gift. As far as we know we're the only intelligence in the entire universe. If that is true then only you and those of us born human on this rock will ever know what intelligence is like. We're the only ones ever to understand science, and build technological achievements. Only we can appreciate the beauty of a space, or a sunset, or the love of family.

Without those experiences then yeah there's nothing holding us here, and why wait till you die of natural causes? I thought about that a lot when I was depressed, and losing my religion, then I had my children and wanted to get better for them so I got help and learned to enjoy the beauty of life regardless of what happens after.
GhidraX64Dbg – Port your debugging notations between x64 Debug and Ghidra
I Am the Cheapest Bastard in Indie Games
IMO in supermarkets in the UK they're both under and over cooked - too consistent in colour and texture throughout.

In France, even in les supermarchés you get a nice crisp exterior and soft fluffy inside.
I think it parallels nuclear fusion in a lot of ways. The impact is unquestionable, but the feasibility is an ongoing debate.
Here's the link to the publication in ChemComm: https://pubs.rsc.org/en/content/articlelanding/2019/cc/c9cc0...
The Japanese always manage to excel at importing delicacies and perfecting them. Take for example Japanese whiskey, which is renowned and considered by some to be superior to the Scottish variety.
Try this guy:

https://nullprogram.com/

He has been known to take on students.
I thought most (if not all) fitbits are set to only activate the display when you rotate your wrist to look at it. Given that the screen isn't on for a majority of the time, wouldn't e-ink barely affect the battery life?
Maybe Musk will be proven right in time but having followed Tesla for a long time and having recently purchased a Model 3 (It's an incredible car). The Solar City purchase is the one thing that never made a lot of sense to me.

Even if you start from the premise that it makes sense for Tesla to be in the solar business, it's hard to rationalize that the best way to break into that market was to buy a debt laden solar panel installer.

I don't buy the short's narrative that this is anything like an Enron style fraud but the only point that the Tesla short sellers are a little bit right on, among the mounds of BS they publish, is that the Solar City acquisition was a shitty deal and Tesla would be better of today had it not happened. That said I don't think it is going to sink the company the Model 3 is just too good.
Yeah PHP is a super fast way to get your product on the road.

I didn't have a very good experience with Laravel since I feel it adds a lot of overhead but the pros are it integrates tightly with Vue and offers hundreds of pre-baked packages that allow you to do handle everything (from file uploads to sending HTML emails).

PHP is a good language and there is a reason why a lot of high traffic websites from pornhub to facebook still use it and it has really improved a lot since 7. The people who look down or red flag php devs arr just taking the jokes too seriously or drinking the kool-aid.
> He was wrong about diminishing resources, he was wrong about the population explosion, and he was wrong that we would lose 50% of all species by the year 2000. He devoted his life to intensely felt issues, yet he has been spectacularly wrong.

Spectacularly wrong... by about 20 years.
This is a response to the responses to this article:

https://news.ycombinator.com/item?id=20765521

Posted a few days ago.
There does not need to be a special case. Just higher penalties and fines.
Bullfrog County, Nevada
It's interesting how this tradeoff works. Lighter elements have a higher ratio of electrons to total mass, so they can store more chemical energy per kilogram, but are also less dense so they store less chemical energy per volume.

Of course, chemistry being what it is, it's not that straightforward. Here's a chart of atomic mass and specific gravity against atomic number: http://mrtitanium.com/images/density.gif?lbisphpreq=1

If you look for elements with a high ratio of density to atomic weight, you'll find most of the elements that we typically use in batteries (eg. Lithium, Magnesium, Aluminium, Manganese, Iron, Nickel, Cobalt, Silver).

Edit: Changed 'atomic number' to 'atomic weight' in the last paragraph.
The 3 wonderful Roger Nelsen books Proofs Without Words entirely consist of equations & inequalities from various mathematical fields 'proved' in intuitive pictorial form.

http://gen.lib.rus.ec/search.php?req=proofs+without+words
This! This is my philosophy, I picked it up from some stoic readings and teachings. Either you can be depressed and hate life and wallow in depression or take the easy way out or you can stop and find beauty in the 80-100 years we're given while on this rock. I used to be depressed and wanting to take the easy way out, now that I have two little boys -- I'm afraid of missing out on their lives.

Missing just one major milestone scares me, but I know I could die anytime and miss their graduation, or wedding, or grandkids -- it makes me appreciate everything more.
You can stop giving the Nazis so much influence over your life, for starters. Just accept that they, like plenty of societies before them, used a certain cool logo, but that's no reason to hate that logo, or to never use it again.

https://en.wikipedia.org/wiki/Swastika#Historical_use
> I wouldn’t characterize him as a “ruthless dictator”

You mean except for the part where his opposition periodically gets assassinated?
SMIC are now rolling out 14nm - that's apparently competitive enough for people to still use Intel CPUs.
> This industry is cyclical in nature.

I mis-read it as "cynical in nature", and it still fits. May the best process win.
> The data provide the most detailed view yet of the passenger experience inside vehicles from Waymo, which doesn’t disclose the information even though it uses public roads as its testing grounds.

What's up with this statement? Should I be forced to publicize my phone calls just because I made them while driving on public roads? It's utterly bizarre that the author thinks he is entitled to see Waymo's data.
Central Processing Unit
Context: wealthy white parent of a public school student living in NYC. I do not subscribe to the "equality of outcome" goal that some other folks in the thread have imputed on the supporters of this move. I haven't had time to make up my mind on this. However, I can definitely understand the motivation, and I can picture being in support.

So here's the background, as I understand it: one really important question is whether the G&T program actually provides any better education to the kids that are in it. Many people feel it doesn't. It doesn't have its own curriculum, except the citywide program, where they just tackle material a year earlier than usual. The district-wide G&T programs -- which comprise the vast majority of the system -- just leave a little more up to teacher discretion than mainstream classrooms.

So the question then becomes, what is the actual value of the G&T programs (other than the citywide one)? People do not believe that white and asian people are intentionally segregating themselves from black and hispanic people for no other benefit. However, that is the most obvious effect. And as we all know, the purpose of a system is what it does.

From the perspective of that systems engineering-style thinking, unless a positive case can be made for the G&T program, there's a strong argument to be made that it should be scrapped. The school district has no compelling interest in providing a system whose sole benefit is socioeconomic and racial sorting. In fact, the main beneficiaries of this move would be the very folks who work so hard to get their kids into G&T programs. Because that stressor -- getting kids into the program -- would be removed, while giving no worse outcomes than what they could have expected before.

That is the gist of the argument in support of getting rid of the program.

My son did not test in to G&T. He has some various social and linguistic delays, but, more importantly, I did not do any of the test prep I'm led to believe many of my colleagues gave their kids. I will probably have my son retested this year after doing some professional test prep. Even though I think it's possible the G&T programs offer no benefit, it's hard to wager his future on that bet, and he wasn't that far from testing in. A lot will depend on how his first year of classes go.
Because it's an important tool for pain management in some individuals. I would rather train doctors to appropriately use the tools at their disposal instead of removing tools from their toolbox.
The cycle life isn't too bad given that this is still at the "it works at all" stage, not the "refined to be commercially viable" stage. Remember that 20 years ago the only practical bulk storage battery was lead acid and that had a similar cycle life. We're just spoiled these days with LiIon and LiPoly being so cheaply available.

Also the per-kilogram energy storage is far less important given the price difference between iron and lithium. There's a huge market for stationary battery storage where weight and even (to a lesser extent) size are non-factors compared with cost per kWh.
http://archive.is/zKUak
Xmake v2.2.8 released, New vs. project generator
They already are.... 75% of the current public system is minorities.....

The whites and asians (which for some weird reason, are not considered 'minorities') have already left the system altogether...

I predict the next step is going to be to forbid private schooling altogether, or require minority quotas in private schools....
the quality of your arguments is basically baseless (or more precisely your imagination seems to be the base) fear mongering best illustrated by using the unreal comedic SV episode instead of real offices of real dog friendly companies (Google for example).

To address most of your other "arguments" - dogs can be muzzled when appropriate/prudent and trained. People btw - not.

>Don't mention France, they don't even come close to the concentration of dogs in the US.

about 2x difference on per capita basis.
China Starting to Block Y Combinator.com
Blockage of Ycombinator.com for more than 60% of data points in China, measured by greatfire.org. It is all about freedom to post and comment and whether the CCP has any control.
> I think you are missing my point. Physical phenomena are not reducible to physical laws, and cannot be explained by the laws. You cannot derive a binary adder from the laws of electricity, and that is why computer engineering is not a field of physics, but is its own domain with its own set of laws.

Fair enough, let's just leave it at that.

> As for Darwin's mechanisms, I'm not speaking from personal incredulity, but from what I see reading bioinformatics textbooks and what leading biologists write, not what we are taught in high school. Darwin's mechanisms are only given lip service, and when the rubber meets the road in practice they are completely ignored.

Okay, I've done some googling. Now let me take a shot at reconstructing what happened here. You read that one paper[1] that quite boldly claims that the CRISPR mechanism proves that Lamarckism is real. You stumbled upon it because it appeared to confirm something that you already wanted to believe: "Darwinism is wrong". You otherwise have no background in bioinformatics.

The thing is, that paper doesn't prove Darwin wrong at all - he never ruled out other effects besides random mutation and selection. Darwin just wasn't very fond of Lamarck's work, which wasn't very scientific even by the standards of its time.

The effects of random mutation and selection have been readily reproduced countless times. Lamarckian effects on the other hand have not been observed until epigenetics (a bit of a stretch), HGT (rather uncommon in eukaryotes like us two) or this here CRISPR (more of a bacteria thing). That's despite lots of experiments that have been performed to prove Lamarckism right. If anything, nature has a lot of obvious Darwinism and maybe some not-so-obvious Lamarckism here and there. To quote the paper:

"Neither Lamarck nor Darwin were aware of the mechanisms of emergence and fixation of heritable variation. Therefore, it was relatively easy for Lamarck to entertain the idea that phenotypic variation directly translates into heritable (what we now consider genetic or genomic) changes. We now realize that the strict Lamarckian scenario is extremely demanding in that a molecular mechanism must exist for the effect of a phenotypic change to be channeled into the corresponding modification of the genome (mutation). There seems to be no general mechanisms for such reverse genome engineering and it is not unreasonable to surmise that genomes are actually protected from this type of mutation."

Personally, I actually find the prospect of Lamarckian effects in the evolution of "higher" species exciting and plausible. It's not exactly a proven thing that this is common in nature, as you seem to believe.
So how do people do this?

Manual inspection?
to rescue what exactly?
First Customer Cancellation
An 8-bit microcontroller where memory is constrained and all the vendor libraries are written in C, is a good example.

Your 32-bit ARM M3/M4 cores are probably crossing that line where the memory cost of using C++ is worth it, but I would say there are still real world reasons to use C.

Though I would love to see more microcontroller vendors (or any) support C++ or Rust as part of they HAL libraries, but I think you will still find C to be perfectly viable for the low cost microcontroller application.
Chinese or Russian satellite “rescuer”.
Not just pain clinics. I went to an ortho for a bad shoulder. The doc offered them to me without asking. Granted, I did mention I can't take NSAIDs due to a bad stomach, but the pain is nowhere near the level that I'd require opioids. This happened about 2 months ago, so it's still easy to get them.

Truth be told, poppies are easy to grow. If I really wanted opioids I'd just grow them again. Yeah, it's not Oxy, but it does the job.
Supernotes: An Argument for a (Taxed) $1000 Bill
The Casio is from a time when there wasn’t a clock staring at you every time you turn around. If the choice were Casio or nothing, I’d just stick with nothing. A time keeping device on my wrist solves no problems for me (except running, in which case the Garmin comes out). A Casio “gets the job done” in the same way a buggy whip still gets the job done: it’s a job that kinda doesn’t need doing anymore, at least for me.

If there were a wrist-worn device that can track my runs, open my garage door, turn on the lights, remind me to water the neighbor’s plants tomorrow at noon, play me some music and...oh, what the hell, tell me the time, too...THEN we’d have something worth wearing on my wrist all day. Which is why I have an Apple Watch and not a Casio.
> NASA has already committed to a permanent moon colony

NASA's priorities get changed for it every 4-8 years and doesn't get given funding increases to compensate. I am very skeptical that we will see a permanent moon colony (run by NASA) in the foreseeable future. I would love to be proven wrong.
I don't think perfection would be required to set hard limits to a simulated being's ability to reason, although perfection would certainly seal the deal.

I'm just thinking that concepts x, y, and z could be forbidden, such that we couldn't think about them, nor even realize that we couldn't think about them. A circle around which our knowledge could expand without ever dipping into.
It's the premise of Harrison Bergeron. Put everyone at the lowest common denominator to make society truly equal.
C's model is great for implementing complex, efficient data structures. Pointers are an amazing abstraction. But in many respects strings are the antithesis of a data structure, and unsurprisingly C falters hard. The problem is that most programmers don't build data structures; they build Rube Goldberg machines for munging strings, even when they're using low-level languages.

Data structures to most programmers are things you import into your Rube Goldberg machine. They don't understand that good programs are made of layers of meticulously crafted, bespoke data structures where the final product is effectively one giant data structure tailored for a particular task, with interfaces to match.

It follows that good C programs don't do very much strings munging even if all they do is process text. The text is systematically atomized from the very beginning. The same is true for good programs in any other language.
Explaining Stablecoins: How DAI Works
It’s mainly a different lobbying tactic:

- Uber and Lyft and more toe-stepping and will encourage their contractors to paint outside the line, deal with the consequence once the administration has caught up with them and is presented with the fait-accompli that this is voters’ expectations now.

- Google/Waymo has better relationships with local authorities and can obtain the permit to drop people off after they’ve proven they are playing within the line — and can wait for, and eventually finance urban furniture changes.

Both use people’s expectations, but differently.
All those claims are proven to be incorrect. Not even the best hypnotist in the world can hypnotize someone into doing something against their will.

I agree “intimidating a creature with primal fear for fun and profit” is not that cool.

But the claims you once believed were never true in the first place.
The Art of Worldly Wisdom - Gracian

http://gen.lib.rus.ec/search.php?req=art+of+worldly+wisdom
Probably at that point the parents who can are going to send their kids to private boarding schools internationally. Depending on where you live currently and what country you send them to boarding school is price competitive with local (good) private schools...
People in the International Space Station?
ONLY 3?!! That game was massive! That sounds like an unbelievable feat of engineering even if the base engine was built off of SM64.
This is pretty cool. While lithium isn’t that scarce iron is plentiful. Also would be even nicer if it used fewer heavy metals and rare earth elements.
Yeah, that's a bit of an overstatement.

We created nukes, landed on the moon, took sludge out of the ground and used it to power the world. We connected this world with wires and glass fibers to build a real-time global communication system that also gathered all of the world's information in a singular and immediately accessible place.

Building a self driving car is hard but really not as tough.

How quickly do think we'd get self driving cars if the USA spent 4% of the federal budget on it like NASA received in the 60s. (That's about $40B a year for a decade).
This is an excellent series from one of my favorite technical bloggers. It is one of the most accessible introductions to a language I've encountered. It is also a great introductions to creating a VM. Highly recommend for anyone that is curious about OCaml or how older adventure games worked.