skysight-inc/HackerNews huggingface dataset:
The "can't melt down" property is usually referred to as "passive safety": https://en.wikipedia.org/wiki/Passive_nuclear_safety . These tend to have components that cause all of the nuclear fuel to passively flow out of the reactor and into a cooling chamber in the event of coolant failure. In liquid-fueled designs, this is accomplished via a "freeze plug," essentially a cork made of a low-melting-point material at the bottom of the reaction chamber that's kept solid by active cooling and rapidly melts in the event of a power failure such that the reaction chamber drains. Equivalent mechanisms exist for pebble bed reactors, though, where all the pebbles fall into a cooling chamber. In either case, production reactors have been build that include these features and the physics are very well understood.

Proliferation resistance is trickier, and not all gen IV designs focus here. There are a couple of areas of attention here. The first, and probably more mature development-wise, are alternative fuel cycles like the Thorium fuel cycle that don't produce easily usable fissile material out the other end (and do produce a bunch of U232, which in addition to being non-fissile is also difficult to steal because it's super-dangerous to handle). Secondly, there are designs that breed and then immediately burn fuel in situ without reprocessing, such that there's no point during which the fissile material exists outside the reactor to be stolen. I don't think any of this class have actually been built yet, but the Traveling Wave design is probably furthest along, and TerraPower is building one of those in China with a target completion date of ~2025.

Two important caveats though: these are "proilferation-resistant" in the sense that fuel would be hard for non-state actors to steal; state actors are another concern as that article points out, but they also don't really need to breed fuel, and can just enrich uranium directly without that much difficulty, as Iran and North Korea have both demonstrated, if they're willing to pay for it. At this point the physics are very well-understood, so this is a problem in need of diplomatic solutions more than technological ones. And second, the focus here is on material for fission weapons. I don't think any nuclear technology has good defenses against using material for dirty bombs.

All of that said, I'd still stand by my original point that newer designs are well-understood and dramatically better in these respects than most currently operating plants, and are only not being built (at least in the US and Europe) for political reasons.
Free Server Monitoring/APM Solutions for Startups and SysAdmins
PIPs are the worst. I've seen them basically emotionally destroy people when they were probably not the right tool. In many of those cases firing would have been better for them.
Ejecting presumably shoves the plane downward in recoil from the pilot shooting upward. The autopilot would notice that.

Also, the plane would be lighter after the ejection.

And perhaps—I'm just guessing—the cockpit window or ceiling might now be gone? In which case there'd suddenly be a lot of drag from air swirling down into the cockpit.

So no, I don't expect the autopilot would continue to do exactly what it was doing before. It'd have to do a bunch of corrections, and then it would return to what it was doing before :)

(Or those corrections might be enough to make it decide "the pilot" should take over. What happens when there's no pilot and no autopilot? I'm guessing that's down to the way avionics hardware reads out when nobody's touching it.)
> 7-X is a research project about controlling a plasma.

Which is the primary impediment to developing viable fusion reactors. So yes, it is absolutely about fusion. We're not trying to contain plasma because we think it'd be a neat thing to do. We're trying to contain plasma because it's necessary for fusion.

We already know that energy production is viable if we can solve the containment problem. Saying this project "isn't about fusion" is like saying "guns don't kill people, bullets do".
Re: Mig-23 incident - at the time of the incident it was a popular theory that this was Soviet's answer to Mathias Rust landing his Cessna on Red Square two years prior.

https://en.wikipedia.org/wiki/Mathias_Rust
I've had to explain this to coworkers in the past, kinda awkward but at the same time I wanted them to not be surprised....
Wow, great counterpoint. Thanks.
Why? There are many different organisations including universities companies and so on that want to use the open cores and many of them either develop new stuff fully open or partly open.

Also, the chips can be both, you can have open source implementations and close source implementations and when you are building a chip you have to make the choices just as in software.
It's not ignored at all- AFAICT the biggest problem is that there's no critical mass of people who can agree on what to do about it.

Furthermore I'm not sure that there's even a critical mass of people in SF who think it's a problem. In any thread about homelessness in SF, you will see at least a few locals get very incensed that anyone is complaining about the sheer numbers of homeless on the streets, and accuse people who would like to move them off sidewalks and into shelters as being heartless monsters.

I don't know how many SF locals are in the homelessness-as-a-human-right camp, but enough to be visible here and elsewhere, and probably enough to muddy the waters even further politically. I've lived in the Bay Area for 10+ years and it always seemed like no one could even agree on what the problem was, much less a solution.
Amazon’s favorite poaching ground for senior executives is Microsoft
Bell and Ross X Renault Sport Formula One Team Chronograph
The major OSs all behave differently depending on if the media with the UDF volume has a partition table or not, among other strange implementation quirks, because nobody expects it to be used outside of optical media.
I am not claiming media conspiracy, I am claiming media incompetency.

> Many parts of rural India are quite lawless and mob justice is the rule

I am the one who is living in rural India, they are not lawless provinces of Afghanistan. Most Indian villages have strong social structures, local laws and ways to resolve disputes even outside government run courts. I am claiming that foreign media just dumbs down things that they can not understand without putting efforts to find facts.

Are you going to trust BBC on issues that happen in India ? Is there any chance that the BBC rep himself is simply fabricating a story over phones ?
Real-Life Schrödinger’s Cats Probe the Boundary of the Quantum World
About Having a Good Time While Building Better Things
Even moreso, I would expect that with most experimental or non-commodity military craft in actual combat situations (i.e. the kinds you really don't want the enemy analyzing or using against you), the plane would just explode as soon as you're a safe distance away.

Like scuttling a ship, but smaller.
No they haven't. They are lurking around the corner waiting to hit you when you least expect it. The mugging you are about to get is what your ops team has had and are trying to prevent.

Enjoy the learnings...
Lots of people don’t seem to understand that it’s possible to be both socialist and anti-Stalinist.
I find myself using it for development more than anything else and it is very nice for that. For example I have a little universe of very singularly purposed things that work together in a bundle. Come time to actually deploy it in production, I would typically have these individual things broke out into their own clusters of servers or cherry pick managed services that make the most sense for cost/reliability/ease of use etc. but I'm sure I'm just inexperienced with all the different scenarios larger orgs would do. At least for development, it really is beautiful to work with and saves loads of time fiddling to get some monstrosity of permutation settings just right after googling many hours to get there. I don't recall spending a day on setting up an env and thinking that it was worth knowing how to do or time well spent.
“Radical Markets: Uprooting Capitalism for a Just Society” Glen Weyl
Quite. This is a live topic for me. Wiser heads pointed me toward

https://medium.com/@jimmysong/the-truth-about-smart-contract...

when I had my own blockchain moment. I think that immutability and lack of human judgement limit the usefulness of these things. And of course, not everything needs decentralised.
At my work, we've had mixed results using it in production. I'd still prefer to using to avoid Ops, but besides that Docker comes with its own bag of issues even though it eliminates versioning conflicts.

For development, on the other hand, I absolutely love it. Being able to have different docker-compose.yml files for each of my projects and being able to spin up isolated versions of database services(each with their own volumes!) has been a tremendous win for me.
I think that's a very valid objection.

However, you could ask a similar question with a modified premise: you'd want to build in a way to have control over the fate of the airplane.

Depending on the situation, the right thing might be to safely land it (if in friendly territory), destroy it as thoroughly as possible (if in hostile territory), or protect lives on the ground (if you don't think you can land it).

But whatever the goal may be, maybe the autopilot could do better than leaving it to chance.

EDIT: I forgot about a fourth possibility. If in hostile territory, maybe use the autopilot to turn the plane into a weapon. You're leaking fuel so fast there's no way you'll make it back to base, but maybe you still have enough fuel to pick up a lot of speed before slamming into a nearby enemy asset.
I think we've reached the point where "X considered harmful" articles can be dismissed as easily as headlines that end with a question mark.
You answered your own question, the cravings. People who only do CICO with junk food will lose some weight, but a good number of people who do that don't have the will power to overcome the cravings and they regain all their weight.

However, if I'm not mistaken, you've lost weight, gained, and lost it back again, right? The so-called yo-yo effect, another harbinger of people who only do CICO. The vast majority of people who lose weight regain it back within 5 years. As someone who kept it off for a decade and only started gaining it back when I start taking my resistance training a lot more seriously, I can say that if I only did CICO, I would not have kept it off. The only way to take off weight and keep it off for long periods of time is to change what you eat, get regular exercise, and know this is something you will be doing for the rest of your life.
Right, I agree that it's a good high-level assessment of US geopolitical strategy. Was just offering an idea of when we possibly should have realized it wasn't going to work on China.
An URL of "https://github.com" means looking up A and AAAA records for "github.com". The HTTP vendors are arrogant enough to demand that your host address for the whole domain is that of the web service, and not any other service.

Because it's at the apex of the domain, that record also cannot be a CNAME alias, because the apex includes DNS metadata that is not allowed to be aliased. So instead we have numerous ugly hacks from DNS providers that vary that address record by tracking an alias target, with varying degrees of reliability.

In other words, your DNS is now entirely subordinate to the demands of the web protocols and using ugly hacks to work around limitations of address records. You can stick a "www" on the front as a cheap, poorly specified, and untyped service selector, but because of the convention of just entering a domain name you'll still have to do the apex record.

Basically, the current convention for HTTP is to overload the address record to be its personal service record and screw everyone else and the consequences.

SRV also provides mechanisms for service fallback and weighted loadbalancing that address records do not. It can also conserve IP space by directing clients to alternative ports without ugly port specifications in the URI. There's a lot to like about it, and a lot to dislike about the current practices.
For enemy recovery reasons?
https://xkcd.com/1319/
If you can't afford to lose it, you should put it in a savings account, a CD or another guaranteed asset until you've accumulated sufficient wealth that you can afford to take risks.

This is investing 101. Any financial planner will tell you the same thing. Most will tell you that you shouldn't have money in the stock market if you're going to need it within the next five years. Ten years is a better number.
What people do in practice with operator overloading is turn regular operators into custom operators that do something different. Your ability to customize behavior is not as extreme as being able to make any custom operators that you want. But the tradeoffs are definitely related.
> The whole idea behind smart contracts that code can be law is fatally flawed, because it is a bet on our ability to write bug-free code. We know from experience that this is virtually impossible, especially at large scale, even for the best people and organisations in the world.

You mean, except for the cases where we do exactly that? Like mars rovers, space shuttles, medical devices, IOT, etc...
I don't agree with the censorship decision, but I completely get why other countries don't like Oliver's show. He likes to denounce other countries' politics from the point of view of liberal, first world policy, which may not be in the best interest of other nations. Even though he is doing comedy for the first world market, it comes off clearly as another attempt of propaganda directed at these countries. The way China has decided to deal with this is banning, so I don't think this is a surprising development.
> If India wants to join the league of the US EU etc then we must be prepared to be judged on those metrics.

Sorry. I do not agree at all. You think India can crawl on all 4 and these countries will give India a seat at the white people's club ? India will not win by playing into the hands of euro-us centrism. Our problems are ours to solve and US/UK etc. should butt out.
There is no such thing as “reasonable protectionism” unless you are dealing with dumping. Harley could hardly be accused of dumping. So why a 6% tariff in the first place? EU clothing tariffs already average 12% in many other categories it ranges from 4-36%.

So is the EU protecting nearly every industry? Isn’t that the point of this “trade war” — the EU has been applying tariffs to almost everything for a long time. Doesn’t the US have a right to retaliate?

French milk is already better than most American milk, yet France puts a 36% tax on dairy imports in addition to heavily subsidizing dairy. So the effective tariff is much higher. And European consumers end up losing because they have to spend more of their money on dairy — all to protect a fairly small industry when measured as a percentage of GDP. Yet every time reforms are attempted, farmers literally riot.

Why should a country accept their goods being taxed without being able to respond in kind?

This is tit-for-tat to be sure, but the tit didn’t start with the Trump tariffs.
Can anyone speak to the significance of Chinese ($) investment in US tech? Would restrictions really be that big a deal, or is should they be more so understood as political posturing and playing to a base?

Thanks.
Are you implying that he was doing anything wrong? Unless he was especially unproductive or ignorant at his job, then the schmoozing can be seen as a multiplier.

At a certain level in a company, playing golf with the client is the job, as it closes the deal.
That's not true in California and likely in many other states.

>[A]n employer may terminate its employees at will, for any or no reason ... the employer may act peremptorily, arbitrarily, or inconsistently, without providing specific protections such as prior warning, fair procedures, objective evaluation, or preferential reassignment ... The mere existence of an employment relationship affords no expectation, protectible [sic] by law, that employment will continue, or will end only on certain conditions, unless the parties have actually adopted such terms.

http://online.ceb.com/CalCases/C4/24C4t317.htm
Show HN: Rush Hour Puzzle Solver and Generator
Ok, now do "I took a job at a huge multinational that you've worked at for your entire adult lifetime, now I have more power over your job than you do, all because I graduated with a minor in HR last month".
I like the JD45/JD40 which I use daily, this is annoying
A few reasons:

1) So that you're eligible for re-hire, either in the future, or when being reference checked.

2) So that you can conduct a less panicky job search

3) Because you believe the issue is a single manager, and you'll be fine once you land outside their reach.
[[citation needed that it’s needed]]
It is hypocritical. No one ever considered banning cigarettes.
Personally I feel it is optimized for constant dopamine and advertisement, at the cost of content density.

Previously, I could navigate to a subreddit, relatively quickly glance at whether anything was new, without being distracted by autoloading images and videos. Now reddit looks more like ebaumsworld 10 years ago.
High energy density systems are quite hard to develop an intuition for.

While average kinetic energy is one way to think about temperature, think about it instead in terms of the Maxwellian particle distribution [1]. In this sense, the Maxwellian is a parameter of this distribution, and as it increases, the location of the distribution changes. A high temperature corresponds to, in this hypothetical system, more particles with higher velocities in the system. (This technically only applies to certain systems in which the assumptions hold. For example, in systems in which other degrees of freedom matter, such as vibration/rotation of molecules, the interpretation is harder. At high temperatures, these degrees of freedom are destroyed, though others, like ionization, can matter significantly.) Of course, these systems are highly collisional, in the sense that each particle will probably go only a short distance before Coulomb scattering off another particle. So the particles are not really vibrating; the energy is in translational motion, but in the mean, there is no real directionality to it, so the particles won't typically stream out of the plasma.

This can be readily understood in the context of achieving controlled fusion. Nuclei are positively charged, and therefore exert forces that tend to repel them away from other nuclei. The nuclear scale, at which nuclear reactions must occur, is very small, and the 1/r* Coulomb potential is quite large at those distances. As a result, it is to be expected that an individual fusion reaction should only occur when the kinetic energy of an incoming nucleus is sufficiently strong to overcome the Coulomb barrier. (Practically, quantum mechanics effectively reduces the barrier through tunneling, but nevertheless it is quite high.) As a result, you need a sufficiently large number of nuclei with high speed to have an appreciable fusion rate, i.e. your temperature must be high enough. (Hence, "thermonuclear" fusion.) This has to be contrasted with your confinement quality, in the sense that you have to keep your fuel at that temperature and at a sufficient density (so that your collision rate is high enough) long enough for fusion burn to consume an appreciable fraction of your fuel.

In context, the temperature seems a simpler quantity to discuss rather than the pressure. It is easier to conceive of this pressure as a momentum flux, and in stars, gravitational confinement demands that the plasma pressure balance the crushing momentum flux of the weight of the star. Such static pressures are simply outside of our ability to intuit, and result in quite counterintuitive properties of matter.

[1] https://en.wikipedia.org/wiki/Maxwell-Boltzmann_distribution

*edit: inverse square is the force, the potential goes as 1/r... update for clarity.
Sounds like similar stories I’ve heard about IBM but not related to cookies. Sell first and hack it together later which is very similar to a lot of places. Except IBM doesn’t seem to be able to hack it together.
So we have some more info out there:

- Their PCF solution is deprecated
- They were still using a deprecated container management solution instead of kubernetes until recently
- If you use Java the for you to use liberty build packs
- They push XP and TDD practices from the garage yet many of their consultants don't practice what they preach.
People aren't faulting IBM for tackling hard systems-integration problems.

People are faulting IBM for over-promising, under-delivering, using misleading advertising, and internally seeming to have foolish management practices.
Out of sight, out of mind, huh? It degrades into smaller pieces of latex, polluting the ecosystems.
Introducing A16Z Crypto
> This article is more realistic than most ML posts, but it’s clear the author is not a practitioner.

No so fast.

Genuine question: how close is the research on 'transfer learning' to something that can be readily used to solve business problems today?

If you can't fire up tensorflow and the like and use it to solve a real problem, or if only the likes of Google are able to successfully apply it, then the author would be correct.
So some random thoughts on the case for this time its actually different are:

1.) The internet and computing has increased the flow of information. Investments in data mining and data science by the Fed lets it make better decisions and test stuff iteratively and react to changes faster. Companies can also track inventory in a more controlled manner and not build too much too fast. Employees can find prevailing wage information easier to find better, more productive jobs. Home buyers can see how overvalued their houses are relative to other cities.

The internet and computing is enabling a much higher control loop (a.k.a. a steeper gradient descent toward optimal economic output based on the production needs for the current population).

2.) Steady reduction in the reliance on oil and gas. Much of the crazy inflation in past cycles was due to oil and gas shortages.

Would love to get opinions and more cases for why its different.
Changed arbitrarily by the author and immutable are pretty clearly not the only two options. Ethereum lets you design whatever governance scheme you want. You can build a system in which people vote on upgrades, for instance. You can structure that scheme however you want. It's just plain lazy thinking to say "welp code imperfect, therefore we can never use it for important stuff".
RISC-V is just an ISA but the foundation and all the people who have bought in have given some political power and dynamism into the movement that it didn't have before.

Just the amount of people meeting and starting to work together on some of these issue makes RISC-V valuable.

Its adoption in research will also lead to some nice stuff (and already has).

So I agree with your core point but we when talking about RISC-V we should think about it more broadly.
Stack exchange has spent an obscene amount of time optimizing their infrastructure for efficiency on dedicated known hardware. Their DB instances also have 1.5TB of ram. You're not getting that for a few hundred dollars.

https://stackexchange.com/performance

Your average site wouldn't get anywhere near the same performance as them.