skysight-inc/HackerNews huggingface dataset:
"We don’t give them any specific instructions with regards to what they should or shouldn’t do while resting,” Dewar says. “But questionnaires completed at the end of our experiments suggest that most people simply let their minds wander
In one study, for instance, participants were asked to imagine a past or future event during their break, which appeared to reduce their later recall of the newly learnt material. So it may be safest to avoid any concerted mental effort during our down time.
"

Astounding. I assumed that the high performing test subjects would have used some sort of special memorization technique, but in fact doing and thinking nothing actually wins out.
This is really cool and good to know about. I hadn't heard of this technique before, but have caught some interest in SPIRV lately while learning about WebGPU. Well I just noticed that Polly is used in the LLVM SPIRV backend... Makes sense!
https://github.com/KhronosGroup/LLVM-SPIRV-Backend/blob/mast...

I'm very excited about the potential for writing GPU code from whatever high level language is convenient. (Which will not be WSL, by the way).
A huge part of that is all the lawsuits and "regulations" designed to keep new plants from being built. Regulations pushed for by the green energy constituency...

I'm all for safety but if you read some of the regulation stories we would be banning CT scanners from hospitals..
I feel like this story has played out before but with a slightly different technology set...
> Google engineers if you're listening - FIX AND IMPROVE HANGOUTS AND STOP WASTING YOUR EFFORTS ON NEW MESSAGING PROJECTS

No don't fix hangouts, help out with matrix.org. They are really offering what nobody else is these days and making huge progress in the short period of time they've been around.
Thanks for the recommendation! I didn't know this one. I try and lap up everything I can by Marsden, (though more often through the lens of applied researchers: e.g. Desbrun, Hirani, Crane, and others -- much involving computer graphics and/or discrete differential geometry applied to physical simulation. In short, I better say that I am not familiar with the scope of Marsden's work. I am sure much of it is beyond me, but gosh darned it, the exterior calculus is beautiful and these guys write brilliantly readable stuff for an engineer.

Even as a hydrodynamics software guy, I found the computer graphics research community to be the easiest entry-point for, especially, the topology and modern differential geometry. It's especially nice when they do a simulation paper with a high end geometric/analytic approach.

This might be a good place to go in order to have a start at, say, Arnold's ``topological methods in hydrodynamics'' or anything TQFT-esque.
> Check out the statistics for how many people completed each problem in 2018

I suspect you'd see a dropoff like this regardless of whether the problems get more difficult or not. Going to the gym doesn't get any harder in February but they see the same effect.
That's because their alternative is homelessness and starvation. Obviously they disagree with that even more than with being exploited.

But for society overall it's better to have even the most mundane jobs pay a living wage AND a safety net for those in between jobs.
Great news. Especially with the CANDU reactors being decommissioned it’s nice to see that there’s still at least some political push to invest in nuclear, even if I think Doug Ford is a cretin.

Fun fact, my father used to buy drugs in Doug Ford’s house when he was a teenager.
I have no idea, but everywhere I've been in the US, both public and private sector, seems to have Dell products, very occasionally HP. I'd expect them to be made in China too, I dunno.
Gosh that's odd; Ravpower has a blog post about UL certification's importance ( https://blog.ravpower.com/2018/04/usb-charger-safety-certifi... ) but you're right, their RP-PC104 45W GaN USB-C wall charger and its manual don't list UL certification information ( https://cdn.shopify.com/s/files/1/0257/5656/5579/files/RP-PC... , https://www.ravpower.com/products/rp-pc104-45w-pd-wall-charg... ).
Re: color — it's not just restaurants. Board games, card games, Google/Microsoft/other logos, etc. also use 4 colors. Why?

Opponent-process theory (https://psyc.ucalgary.ca/PACE/VA-Lab/colourperceptionweb/the...) says that the eye converts the three wavelength inputs into six orthogonal axes (dark-bright, yellow-blue, red-green). From these axes we get the four primary colors: red, yellow, green, blue. Of course things are never so simple. There are various attempts to measure the perception of color (https://www.handprint.com/HP/WCL/vismixmap.html#ncs), and none of them place red-yellow-green-blue exactly along the axes.
I don't think it has any context with schools other then the average person has been into a school gym and has an idea how big one of those are. If you left them guess how big one of these reactors without something to compare I would have no idea what a compact reactor would be for size. I personally thought we would see trailer sized nuclear reactors. But a gym sized one is not that big of a foot print either and can fit in any city.
"... better to truck in heavy fuel oil..."

Your answer right there. The nuclear power industry just doesn't lobby hard enough.
It's a figure of speech to give the audience an idea of the size of the reactor, since a large majority of citizens have attended school.

Please try to be more generous in your interpretation instead of just throwing out the worst possible scenario thinkable.
Using this to excuse my 6+ hour Cities Skylines binge on a Sunday.
Yeah totally agree.
Just finished The Butchering Art by Lindsey Fitzharris. I can’t express strongly enough my gratitude that if I were to need surgery, it wouldn’t be in an operating room where “the screams of those struggling under the knife mingled discordantly with everyday noises drifting in from the street below: children laughing, people chatting, carriages rumbling by.”

Currently reading These Truths: A History of the United States by Jill Lapore where she argues for the pressing relevance of our foundational principles. It’s a hefty tome of about 800 pages, so I still have a ways to go.

Next up are two books which have been featured in several end of year lists: Say Nothing: A True Story of Murder and Memory in Northern Ireland by Patrick Radden Keefe and Exhalation by Ted Chiang.

Reading aloud with my 10 year old daughter: Little Women by Louisa May Alcott (Penguin’s 150th anniversary annotated edition with a Patti Smith foreword). Enough said about how influential this experience is for both of us.
Well, reading the IRS guidelines on what qualifies as UBI, it seems like it might fall under that category, but I'm also not an expert, which is why I'm asking for a more qualified opinion. However, assuming it's UBI, it's pretty clear to me that having a large percentage of their income this year being UBI would be a red flag to the IRS.
Fair enough. Do you have a more accurate number?
Regarding hanlons razor, I'm not making any accusations of malice. It could be malice, or it could be stupidity. Either way the results are the same. Frankly my opinion is that the line between the two is often quite blurred.

Regarding "undermining" novel innovation, you're right for sure. In this example, however, it's not undermining, I'm alleging they're not even doing compressive sensing, and that a competent unbiased reviewer would have caught it.
Observations from a neighbouring country: In Toronto where I live, I never expected to see things like winds from actual hurricanes, earth quakes, total electrical blackouts, deadly flu virus epidemics, debilitating ice storms, terrorist attacks, severe flooding... But I've experienced all the above within recent years. Some very mild. Some very destructive. But all are things I never expected to see here. And with those we still deal with killer heat waves and cold snaps, fuel production plant explosions, and tick borne diseases. Right here in the city called "Toronto The Good."

Avoid the obvious disaster-prone or expecting places (you've listed a few of your own) and even still, do not expect Nirvana. There is no American Garden of Eden to discover. It's just not there. Or anywhere.
Edward Snowden's 'Permanent Record' Summary with Audio
It is unbelievable to me that nobody knows who this was. It makes me wonder if somewhere out there is some software engineer, nearing the end of their career, who carries this in their conscience. Do they know about it? It seems it is such a famous case and the medical device industry so small that surely they must.
Best+water+purification+systems+|+Tonys+Pure+Systems
The obvious solution seems like some kind of service which tracks all of the shows you watch and are interested in, and changes what service you subscribe to every month.

If there is a new season/show coming out on one service that you are interested in your next subscription will be that service, otherwise it is some kind of random/RR and you get a notification of which app to use this month.

All the shows are available to watch when you want, why bother to have all the subs always?
Richard, I swear to carry on you’re cause!
I can’t tell if you’re trolling or not, but I’m just going to assume you’re being sincere.

Nothing about that quote suggests they want nuclear reactors in schools. They’re just trying to give a sense of size. Also, Canada has had very, very few school shootings.
Good to know! Is it all administrable from mobile?
> ok boomer

Why would you call a 96-year old a "boomer"?
Show HN:Elementary CA – A method to reduce Rule 30 computational effort
Given your photography skills, that would be immensely cool!
I would much rather live near a nuclear power plant than a coal plant. I thoroughly support this, and hope they dismantle the big smoke-belching power plant in my city in favor of clean nukes.

My only concern is the scalability of this technology - mciro plants sound fine for powering far off native settlements in the far north. But for providing grid power to the urbanized south of the country, wouldn't it make more sense to build bigger plants in fewer numbers? Chernobyl, for example, was 4 reactors all hooked up to the same electrical generation equipment to save money (high quality turbines are expensive).
We fought our landlord’s secretive plan for facial recognition–and won
"... yay for journal asking for "suggested reviewers" to the authors [themselves])"

That is common practice at a journal like Nature when there are a limited number of investigators in the field with the reputation and experience "necessary" to evaluate the work.

Of course the chosen panel of reviewers is supposed to remain anonymous.

How would you improve the system?
I've recently become an instant fan of Bernadette Banner, historical clothing recrations specialist, with video and Pinterest channels.

In a piece I'd submitted to HN a few days ago, she discussed the matter of a cheap Chinese knock-off of a 15th century gown. Somehow an item made of wool-blend, silk, and other fabrics, constructed over 250 hours, was being sold for $40.98.

Short-cuts were taken.

Aside from a host of other aspects (ownership of ideas, fraud, misappropriation of likeness, etc.), the segment is a tour de force of textile and garment techniques and technologies. As is virtually all of Ms. Banner's video archive. I've virtually no interest in the topic itself, though I'm somewhat aware of the historical significance of clothing technology and its role in the Industrial Revolution. She herself is must-watch Web-V, based on knowledge, wit, charm, diction, geek-out nerdiness, and sheer enthusiasm for her topic.

In the dozen or so videos I've watched to date, she covers many of the elements you describe (possibly excepting zippers).

In overall impact, I'd compare her work with Primitive Technology. Much of the framing is different, but the end result, someone captivated by and exceedingly competent in what they're doing, sharing it with the world, is quite similar.

https://invidio.us/watch?v=J80J4oaGVnY
I'm not surprised. The Ryzen line is the best line of consumer CPUs I've seen since Sandy Bridge.
Yes, I was thinking of that article when I wrote the above comment. Thanks for the link!
This looks like a particularly good fit for Saskatchewan with very small cities (largest is pop. ~ 250k) and almost half of the electricity currently being provided by coal plants.
Having been on both, I can say personally hydrocodone seemed more effective.
Only if the “green energy” people actually had that much power...

In reality there are 2 forces that have stopped nuclear. NIMBYism. And terrible economics.

But the green energy people are an easy punching bag for the nuclear advocates who are simply unwilling to face up to the reality of why nuclear keeps failing to take off.
Bill Gates' foundation was ready to build a thorium reactor. Canada should investigate using that design.
This seems more like an issue with people being out of touch with the theoretical side of war. War, as a concept, has been treated as simply being another means of compelling cooperation since as far back as Sun Tzu. Although western war philosophy has been equally influenced by more recent figures like Carl Von Clausewitz. The US military even acknowledges similar thinking through modern concepts like the DIME model that are oriented towards forming a theory of war that acknowledges itself as part of a larger political environment. From this perspective, where war is just a tool for compelling cooperation, a trade war is simply a trade and economy based conflict which seeks to compel cooperation towards some particular goal like not putting people in concentration camps or buying more USA made rice.
You can’t tell me that interval running app is as useful to you as a Spotify subscription. 10/mo is pretty steep comparatively!
Because the argument for streaming services is _convenience_. And that's especially true when we're comparing them to piracy.

Having to switch streaming apps/programs every month is not convenient.

Having to wait up to a month to change services if I learn about a new show I like is not convenient.

Having to pay for multiple streaming services if I happen to like content by multiple producers is not convenient (or cheap).

The streaming industry honestly seems like a "prisoner's dilemma" like scenario. Each streaming company (presumably) benefits over their competitors by having exclusives and limiting where certain shows can be watched. But the streaming market as a whole is held back by this.
One illustration of this is that when they changed the formula to prevent injection and insufflation, heroin use rose. [0]

I seem to recall earlier stories linking the rise of prescription opiates in general to a resurgence in what had been declining heroin abuse, but I'm not finding anything.

[0] https://www.latimes.com/local/lanow/la-me-oxycontin-20170109...
The issue is there is very little good content out there. Cable before video games and the internet could charge a huge premium, but spread things out and you end up with a ‘History’ channel showing cheap ‘Ancient Aliens’ crap.

Similarly, break modern content among 5+ services and the content will be worse and simply not worth paying for. Just look a Hulu which has been free on PC and they still can’t compete with Netflix.

In the end my retired 70+ year old mother has Netflix, Amazon prime, and a premium Cable subscription, yet mostly just watches YouTube videos. For people with less free time and less disposable income their not going to maintain a subscription unless their watching something every month.
Fukushima was a good reminder that these “regulations” exist for good reason.
Saskatchewan is a little more than 1M with cities smaller that 250k and New Brunswick is even smaller. Northern Ontario is also quite sparse. I think these are pretty good areas for the tech!
Small nuclear plants are actually something that can possibly help (differently from the large ones). But I doubt anybody will get the costs down enough to make them viable, wind and solar are power horses. It's like creating a non-mainstream computer architecture at the 90's and early 00's, it won't improve fast enough to even match their speed.

About emissions, coal is responsible for a huge share of emissions on electricity generation. If you replace half of it with a 0 emissions source, and the other half a source 4 times more carbon efficient, it does go a long way to help. If we are luck, this will give us enough time to develop batteries, because that is very likely what will happen.
The way your sentence reads is that Sandy Bridge is better. I suspect you mean that the advancement with this generation is as significant as any since sandy bridge. Can you clarify?
I decided to post what I have been working on, as I have been researching this largely in isolation and would value feedback from the community here. I think the approach is novel, it certainly allows one to compute n rows with fewer lookup operations and I haven't found anything else that proposes this particular method, but there may be an iceberg of knowledge I've only just scratched the surface of here, so I hope the community here can provide some insight and feedback.
Came here to ask the same thing. I can’t make heads or tails of it otherwise.
> Does the fact that there were four broadcast networks mean that one of them eventually prevailed, and the others disappeared? No. Was there a cable channel war resulting in one dominant cable network? No.

I get all 4 broadcast networks for free over the air. Cable channels are infamously bundled so if I get one, I have to get dozens, and it's essentially impossible for channels to fail in the market. These comparisons aren't like competing streaming services at all.

If you look at the actual cable service providers, there are very few. They're definitely prone to monopolies. Comcast (#1) would have bought Time Warner (#2) a couple years ago if the government (and everybody else) wanted to block it.
It's pretty common to use IEC C7/C8 for the PSU<->AC connection:

https://en.wikipedia.org/wiki/IEC_60320#C7/C8_coupler
IMO it was clear to me that they mean in terms of value.
The same people who screamed about wind and solar also scream about $BYND and surprise (notice the "eating meat is bad for the environment" meme coming out recently), they are funded by similar pipelines.
It also depends on whether content quality/quantity develops to where 1-2 services can satisfy someone by providing closely tailored content. Right now, a few streaming services can provide more than a person has time for, but only if they watch somewhat indiscriminately. This could satisfaction could be achieved with a power law distribution or perhaps a 3-4x increase in spending per service if the market grows sufficiently.
Thanks! This is a great talk.
Based on the downvotes some people clearly don't have a sense of humour.. but this made me chuckle!
In SRE and DevOps land we’ve mostly had arguments over continuous deployment vs continuous delivery and have mostly let feature engineers decide how they want to use the possible approaches and options available
I didn't try modern machine learning stuff, so I cannot comment on that.

It doesn't do operator fusion or JIT, but neither does numpy ... numexpr, numba and pythran do, but you were referring to "plain python" in your original post.

Indeed, K is mostly vanilla single threaded code. When I started using K, i was also thinking "neat, simplifiied APL, but it won't be fast" (I had previous positive experience with APL). But it was way faster than plain threaded code should be. The reasons, AFAICT at the time were:

1. Access patterns are extremely predictable, which means much of the data is in L1 much of the time; That, on its own, delivers a factor of ~10 speed compared to having the same data scattered in L2 if you are memory bound.

2. The code is incredibly small and in 2003 when I looked at it, mostly fit inside the I-cache, which meant even the branch prediction available at the time was doing way better than one would expect.

3. The primitives are very well chosen and play well together.

The hidden elephant in the china shop is that your code has to be idiomatic for these to matter. See e.g. [0] from Stevan Apter, for aggregating functions in a toy database e.g. group[avg] - the version he uses, vs. 4x slower one in the comment.

I have no doubt it is possibly to beat k with numpy; it might even be easy if you are more proficient with the latter than with the former. However, for the kind of exploratory data work I did in the day, it is very hard to beat overall when you take thinking, debugging and experimenting into account. And if/when you have converged onto a well-enough defined computational pipeline, the best tool for that specific job (C++, CUDA, TF, MKL) is often the only reasonable choice.

> when I was working in the space it seemed like the hagiography and actual performance were worlds apart.

I don't know who you were talking to, but for me it was always an optimization on the "effort/result" metric, not on either on its own. Python often requires less effort, but iteration runtime speed (even with numpy) is horrible. C+CUDA delivers faster results but the iteration development speed is horrible. For me K struck a sweet spot. YMMV

[0] http://www.nsl.com/k/t.k
Ryzen 9 series seem to be sold out pretty quickly everywhere. They go like hot cakes. Same thing happened with Ryzen 9 3900X after release. Only relatively recently it became easier to buy it, and it's still often sold out.
I'm pretty sure it meant better in terms of a step change. :) Not outright better than Sandy Bridge.
You should become more conservative about drug marketing and profits, less about legalization.
AMD now reminds me of their Athlon/K7 glory days
The topic is small modular reactors, which are defined as reactors producing less than 300 MW.

The Voyager RTGs generate "a few hundred watts" (https://en.wikipedia.org/wiki/Radioisotope_thermoelectric_ge...).

The Virginia class submarines use a GE S9G, which produces 150 MWt. Power output is a mix of electric and shaft torque (https://en.wikipedia.org/wiki/S9G_reactor)

The Los Angeles class submarines use a GE S6G, which produces 165 MWt (https://en.wikipedia.org/wiki/S6G_reactor), power output is a mix of electric and shaft torque.

The Ohio class submarine uses an S6G, rated at 220 MWt (https://en.wikipedia.org/wiki/S8G_reactor).

The Nimitz class aircraft carrier use two Westinghouse A4Ws, which produce 550 MWt each (https://en.wikipedia.org/wiki/A4W_reactor). Power output is a mix of electric and shaft torque.

Chernobyl had 4 RBMK-1000 reactors which produced 3200 MWt each producing 1000 MWe (https://en.wikipedia.org/wiki/RBMK)

Hinkley Point B has 2 reactors at 2 x 1494 MWt, 2 x 655 MWe (https://en.wikipedia.org/wiki/Hinkley_Point_B_Nuclear_Power_...)

Fukushima has multiple reactors, mainly four 784 MWe GE BWRs (https://en.wikipedia.org/wiki/Fukushima_Daiichi_Nuclear_Powe...).

So, you're looking pretty solidly at things on the scale of a fast attack submarine after shielding, turbine, management and maintenance systems, etc.

These are of course not on Wikipedia's list of SMR designs: https://en.wikipedia.org/wiki/List_of_small_modular_reactor_...
My understanding is that you need to apply masks at the sampling stage, and there are legitimate researchers trying to play with that concept using single pixel cameras. Never heard of anyone else try compressed sensing with regular CCD or CMOS sensor array cameras.