skysight-inc/HackerNews huggingface dataset:
I guess the glib answer is that the big thing is specifically designed to avoid disrupting those signals, and the small thing is designed to disrupt them as much as possible.

A tiny radar reflector has the cross section of a huge object, because it intentionally has right angles that send signals back to their source without scattering them in other directions (as much as is possible).

Passive radar still requires the object to reflect signals, it just doesn't require the signals to be reflected back to the source of the signal. Consider a monitor with an anti-reflective coating (so lets take a non glossy monitor). It is effective at reducing the reflection of the window behind you, it uses a thin film to cause destructive interference so that the light coming in the window not reflected, and you see a greenish-purplish image of the window instead of getting a bright reflection. However, if you take a flashhlight and shine it down on the monitor from near the top of the monitor, you will easily see the glare from the flashlight as it illuminates the monitor.

I think this is a good analogy for active vs passive radar. The F-117 was built to avoid right angles, this is like the light from the window behind you. The F-117 won't send radar back in the same direction it came from, so active radars are thwarted. However, if it is being 'lit up' from somewhere else, it is not as effective since by not sending radar back to where it came from it sends it in other directions instead.

However, it also has a coating to just straight up absorb radar. The F-35 is much more reliant on such coatings, and so it should scatter very little EM radiation in those frequencies, regardless of whether the detector is in the same location as the transmitter.
Bret Victor pointed out Alan Kay had to wait 50 years before something like the Dynabook was possible.

And with a bit of creativity, multi-use tactile interfaces can be accomplished today.

https://en.wikipedia.org/wiki/Nintendo_Labo
From the announcement blog post:

"From a technical perspective, WARP is a VPN. But it is designed for a very different audience than a traditional VPN. WARP is not designed to allow you to access geo-restricted content when you’re traveling. It will not hide your IP address from the websites you visit. If you’re looking for that kind of high-security protection then a traditional VPN or a service like Tor are likely better choices for you."

https://blog.cloudflare.com/announcing-warp-plus/
I stopped procrastinating and did something
People complain about an "IPO shortage" and the problem of VCs capturing all of the pre-IPO growth.

But if there's a silver lining here, it's that VCs can pull this shit until the cows come home without causing the same systemic problems that led to the first dot-com crash. They tend to have a small handful of wealthy LPs, and the financial system doesn't really give a shit if they get wiped out - grandma's pension may not be growing fast enough, but it's not going to evaporate.

In this case, SoftBank and the Saudis run away with their tail tucked, and everyone else just looks at them like they were idiots and moves on.
I got my BS in CS 16 years ago. I always thought I'd go back for a PhD, but every time I started looking, I quickly lost interest. (I don't think I'll ever get one.)

But, here's the important quote:

> After I acquire my PhD, I surmise that I would go to industry.

Go into industry first. Why do I say this? I've been involved in hiring for about 8 years, and I've only seen a very small amount of candidates with PhDs. (They usually come from inexperienced recruiters who don't know how to hire software engineers.) The candidates fresh from a PhD program usually have very little experience in complicated software engineering, and thus will work at the same level as a recent college grad. The only time they are useful is if their field of study directly applies to the work we're doing; but I've never seen a PhD candidate like that.

The thing to realize is this: (Computer Science) != (Software Engineering). Industry mostly does software engineering; it only gets into "computer science" if you're writing a compiler, a database, ect. So, unless you pick a field of study that industry will need when you graduate, you'll end up being as useful as an entry-level CS grad.

BTW: If you find something interesting, you can always leave industry to go back to school. It's critical, however, that you set up your finances to do that. Going back to school will be a huge paycut, so you need to make sure that you don't have a big mortgage, large car payment, ect. (That being said, assume that you'll work for 5-15 years before going for a PhD, so if you buy a nice car now, and pay it off, you'll start your PhD program with a free used car in good condition.)
It's not an either-or kind of thing, where we can either put people in a hell-on-earth where they're traumatized or we can let them go free. It's possible to acknowledge that a person has done something terrible while also treating them with some basic human dignity. Lots of professions agree that you get from people what you expect, and when you expect people to act with dignity many of them do.

Prison doesn't have to be a place where punishment is meted out upon some imperfect soul for an eternity. It can just as easily be a place where the inmates are expected to make an effort to understand why they are there and how they can move on from that chapter of their life. And we can still lock up the unrepentant for a very long time.

Many of the Christians that I've talked to use the phrase "hate the sin, love the sinner." Maybe it's time we took that to heart and allow our prison population the dignity of being treated like human beings?
They got rid of the % operator for error propagation for one.
Hopefully this works out the same way to how California sets clean car standards just for themselves. California is a big enough market and it's not worth making different cars just for California. So all cars sold in the U.S. are manufactured to that standard.
What are the bounds on the ratings? Out of 5? Out of 10?
Most management companies are local. One can kind of see how WeWork would work by being bigger than all management companies and having a global presence.

Assuming their kind of risk in a robust economy is lucrative. But I fail to see how WeWork could ever weather a recession, US or global.
Historically weren't some wars decided via a duel between two champions? Or is that just fiction?
Football teams are coed.
The new async/result location stuff reminds me of the Pin concept that Rust fairly recently adopted. It seems like a pretty huge step forward for the language. Especially since it's casually mentioned that it also solved "safe recursion".

I'm curious about the tools zig offers around doing asyc work while guaranteeing certain invariants, and how the @Frame builtins work with that, but I'm guessing that's going to be elaborated on in a future post.
I'm not exactly sure why this is controversial at all. And I think most of us know and believe this to be fact.

I am 5'10" tall, born and raised in Western society. I am taller than my most of my ancestors, but only marginally taller than my father. He grew up in India, but his family was non-vegetarian in a village of pure vegetarians.

We might have been able to be a little taller if we understood nutrition a bit better, but it's probably within an inch or so. Our height is limited by genetics, not by environment.

It stands to reason that if physical attributes like height are subject to genetic determinism, aspects of our brain & mind should be too. Now, comparing brains to height is very reductive, since the brain is infinitely more complex. But there's a probably a pretty good reason why my father and I have very good memories, and are fairly intelligent people. But we're also not superstar athletes, or great artists. Genetics and environment have optimized our brains in a certain way. And I'm already seeing the same traits in my 1 year old son.

But isn't that the beauty of genetic determinism? Isn't that the beauty of all of us having vastly different life experiences? I don't lament the fact that I don't have the genetics of Usain Bolt, but I can admire and appreciate his prowess. Similarly, I don't lament the fact that I'm not a great creative like Picasso or Mozart. Something about their genetics and environment allowed them to achieve greatness in areas I am not capable of. And that's fantastic, because our society is enriched because of this diversity.

I think a society that celebrates the individual, gives them the resources and environment to achieve whatever they're capable of, and thus, reach the limits of their own genetics is one I'd like to live in. Realistically, most of us are not even close to be limited by our genetics, but man, how awesome would it be if we were?
The article presents this idea specifically because it is incorrect, and goes on to explain the newer, more accurate understanding of genes, which is (as far as I understand it) that they encode various options and patterns that can be leveraged by the organism in different situations, not a rigid plan to be executed by the cells.
That was due to a weakening of the jet stream which normally keeps arctic air further north. There is evidence (inconclusive AFAICT) that global warming is partly to blame for a weak jet stream last winter.

This is why the term "climate change" is more accurate than "global warming". Increased energy in the atmosphere has uneven effects. The overall effect is to warm the earth but due to second-order effects (changes in cloud cover, changes in precipitation), some places won't experience warming but will experience change.
Even more modern models like SABR got broken by negative rates and the quants adjusted in the same way, they just shifted it.
There is no “durable purpose” for lumber for practical purposes. Today’s construction lumber can last 100 years, maybe 200 years if someone really cares, but beyond that it’s simply not worth maintaining it if it’s not some kind of historic landmark. 100 years is long on human scale, but mere moment with regard to carbon sequestration.
In Mexico, there is a simpler option: universities affiliated with professional teams. Tigres UANL and UNAM Pumas in Liga MX are examples. Leones Negros UdeG in the Ascenso.

https://en.wikipedia.org/wiki/Tigres_UANL

https://en.wikipedia.org/wiki/Club_Universidad_Nacional

https://en.wikipedia.org/wiki/Leones_Negros_UdeG
I assume the complaint is that it doesn't word wrap so most of the text is cut off.
Vernon Vinge's "A Deepness in the Sky". Includes very well put thoughts on the far future of software. Also his "A Fire Upon the Deep" with a fascinating take on AI, cryptography and more in a slightly alternative universe.
David Moles's 'Down And Out In The Magic Kingdom' [1]:

https://dmoles.files.wordpress.com/2017/01/down-and-out.pdf

The final showdown is between object-oriented and functional programs, and the OO programs have a hard time because the functional programs can use the state monad. I am not making this up.

[1] Yes, David Moles's 'Down And Out In The Magic Kingdom', not Cory Doctorow's 'Down And Out In The Magic Kingdom' [2]; Cory Doctorow had a bit of a project of writing stories with titles reused from previous works - for example, his 'True Names' [3] is not Vernor Vinge's 'True Names' [4] [5] - and David Moles thought that what was sauce for the goose may as well be sauce for the gander

[2] https://craphound.com/down/download/

[3] https://craphound.com/news/2008/03/13/true-names-part-01/

[4] http://www.scotswolf.com/TRUENAMES.pdf [6]

[5] Vernor Vinge's 'True Names' [4] is really worth a read too - a neglected early work of cyberpunk, beats the pants off Neuromancer if you ask me.

[6] Yes, that is a pirate link, but the whole book is about a digital world at the mercy of hackers; you made your bed, Vernor, now you get to lie in it.
Cory Doctorow's short story from 2002, "0wnz0red", about
programmers who hack their own bodies don't need exercise and never get sick: https://www.salon.com/2002/08/28/0wnz0red/
I mean, what you said about if statements (which should be very very rare in Erlang) kind of betrays it: you most likely _are_ holding it wrong.
> Transpo and electrical use are consumption, primarily of the middle and upper middle class and their preference to drive and live in sprawl rather than dense, city centric housing.

It's a self-fufilling problem. Previous generations prefered single family units so cites enacted building height limits and zoned most of their residential land for low density housing. Those areas are still highly coveted so they are too expensive for most people (e.g Boulder) so the current generation of middle & upper middle has to live in the suburbs which are also low density housing.
It's not so simple, because the machines that rank products and serve search results are evaluating the reviews too.

As those machines look for signals of "authenticity," review factories learn to manufacture reviews that fake those signals. If adding a small mix of two-star reviews helps with search rankings, the review factories will start doing it in a heartbeat.
This is a very good answer!

I got a PhD almost 20 years ago (in ML). I worked hard and played hard - and had the time of my life. I learned to surf, got a black belt in Aikido, restored a sailboat, climbed 3 times a week, and made friends for life.

Professionally, it set me up to join industry, and put me on a technical fast track. Do I still use any of the research from my PhD - almost never (although I still dabble with NNs and GAs occasionally). Do I still use the overall research and organisational skills, and the critical thinking I learned - every day!

If you are a self-starter and have the right sort of intellectual curiosity, a PhD will be a worthwhile exercise, whatever you do afterwards. And, as the parent points out, the signalling that a PhD gives can be very useful. The fact that you completed a PhD points out that you are both smart, and can get things done.
I honestly wish more women would try out for football, though I completely understand at least some of the reasons why they might not want to.
The state can change the bylaws. Or at least make the bylaws unenforceable within state boundaries, which has the same effect. I believe that is what California has done here.

For another example, suppose there were some chemical company organization that had a bylaw like, "You cannot print information about carcinogenic ingredients in your products." But then California passes prop 65. The bylaws are now moot -- if you have to choose whether to comply with bylaws or state law, you either have to take your ball and go home, or the bylaws have to change.
Ok fair enough, that's more late Buffett.

I don't think he invests so much in capital starved businesses, more he just uses the cash generated by eg insurance to invest in high quality businesses. I suppose the difference here is the high quality part. Wework doesn't seem to have much of a moat, have particularly good governance, or have much of a track record of anything.
Think of what it "was" when your grandparents were young!

In the 1910s, the observables were extremely faint visible-light nebulae, with M13 (Hercules) closely comparable to M33 (Triangulum), although the spiral structure and larger solid angle of the latter was known since 1850: http://www.messier.seds.org/more/m033_rosse.html (This only about five years after the first known resolution of nebulae into elliptical, spiral, and irregular; at the time the linked sketch was drawn there were enough observations of spiral nebulae to decide that M33 must be one as well).
Observations were consistent with an extragalactic but nearby star cluster.

Better observations led to an evolution of what, retrospectively, M33 "was": from closely comparable with M13 to more than a hundred times further away (~ 6.8 vs ~ 850kpc), and tens of billions rather than hundreds of thousands of stars.

Perhaps it's best to think of "was" and "is" in relation to human observations. (This also comes up whenever someone objects to talking in the present sense about today's observations of objects at kiloparsec distances, as in "Sag A* is noisy today" provoking "no, it was noisy 26 000 years ago!" -- and of course hypotheses about what exactly generates the Sag A* observables have not fossilized yet).

There are still large uncertainties about the exact structure of our own galaxy, but the (cosmological) Copernican principle is alive and well in that area of galactic astronomy since galaxy zoos are full of various subtypes of dusty spirals.
Another one person MUD project is Bo Zimmerman's CoffeeMUD. It's been around for some time. See http://www.coffeemud.org/

I always felt that a MUD would be a fantastic design approach for a graphical MMO. Specifically, start by creating a text (MUD) version of your world and the basic interactions, and only when you've created a compelling story and experience with words do you translate that into visuals.

It also would be pretty intriguing to create a MUD that could work in multiple media: text, 2d graphics (think point and click adventure), and perhaps 3d graphics. Theoretically it would be doable. A pretty interesting advantage would be that an MMO with a text option would really open it up from the perspective of accessibility.
Wouldn't this make it illegal to prevent players from profiting from endorsements ? Voluntary organizations can't break the law.
Modelling Time – Eric Evans – DDD Europe 2018
Southpark nailed why this needed to happen in their episode "Crack Baby Athletic Association" [1], where Cartman essentially poses as a Slavery-era plantation owner, and wants to ask the University of Colorado for "business advice" on how to make people work without paying them - like their college athletes ("slavery"):

>> "Now when we sell their likeness for video games, how do we get around paying our slaves…erm - student-athletes then?" - Cartman

NSFW / Trigger warning etc: I realize Southpark isn't for everyone. But on this issue I feel like they nailed it by showing just how ludicrous the NCAA really is.

[1] - https://www.businessinsider.com/the-crack-baby-athletic-asso...
True. The reason I said what I did is because if you have an aircraft that's designed to defeat airborne X band, and somebody on the ground pulls out a truck-mounted radar in a different band, I still wouldn't say the stealth has been defeated, if the reason X band was chosen was to defend against other aircraft.

Don't know your background, so I apologize if this is old info for you: the band of radar you use is driven by the size of the antenna, which is why pretty much all fighter radars are X band (maybe +/- a little bit). You only have so much space in the nose of an aircraft, and that becomes a constraint for what radar frequencies you can use. If you know that, and your goal is to not get shot down by enemy fighters, you can optimize your radar signature for that threat.

To me, this article is like saying something like "bullet-proof vest defeated by falling boulder." My reaction is well...no...not really....
I'm aware of that too.

Point remains: direct solar, or battery storage, won't work, at all. Power and energy to load are simply insufficient.

Wind can. Synfuels can. Wood pellets can. Scales and tech are manageable.

For canal traffic, electric mule traction can. Likewise electrified cable ferries, on limited routes.

Nuclear almost certainly won't. Yes, it's technically proven, but the risks, costs, social, and political hurdles are enormous.

The shifts will eventually not be willing.
The players generate lots of revenue, they should be allowed to have some of it.
Sounds interesting, have you published any more details anywhere?
NCAA literally has the slave model and most likely has origins in that mentality. Just like a race horse can't ask for money because it is a property of its owner, student athletes are not any different from NCAA perspective. It is strange to think that such rule existed for so long in the "free" society.
It's a bit weird to just throw up your hands just because you need to take a logarithm of a negative number. Plugging ina negative number might cause the solution to become complex but as far as I can tell it should remain a solution of the corresponding differential equation. So either the partial differential equation has no real solutions or the complex part cancels out or can be removed. Some information seems to be missing to truly determine Black Scholes to be broken.
Finally exFAT will be supported out of the box!
Yeah, the only thing that goes three times faster when you do something like that is the project budget.

It was a good lesson for me; surprisingly enough it's sort of what made concurrent algorithms click; specifically why "adding more threads" doesn't just magically speed up an algorithm.

I do think microservices would have helped in this specific problem; at least the toe-stepping would have been minimized.
You seem to be suggesting that we should just ignore conflict of interest concerns when the military is involved?

Most jobs involve large periods of mind-numbingly boring work that's not important to the big picture. The problem is the small, sometimes minute, fraction of time spent where the work is important to the big picture and there is a conflict of interest.
I'm surprised Snowcrasher is on there, but Cryptonomicon isn't; I'd put the latter as more hard Comp-fi than the prior even.
Thanks dad.
Show HN: Tiblar a microblogging site built in Nigeria
Number one, unless you love what you study, don't get a PhD. You'll probably never finish.

Number two, if the only reason you want a PhD is for more money, you won't make and it won't help. If you look at the earnings of people with a PhD vs. people without one (but who could have gotten one), the ones who didn't are pretty even because they have four/five years of work experience when their friends are just getting out of their PhD programs.

If you don't like doing reading and research, then you probably won't make it through the PhD. Even worse, the "interesting" work that you get to do in industry with a PhD vs. without is basically more of the same, because all of the stuff that isn't like that is just as open to people with a PhD vs without.

It sounds like the PhD really isn't for you. Get out there and go apply what you've learned thus far.
Unfortunately the opposite way is not possible,yet.
Different Types of Audio File Formats Explained
It is used for quoting between market participants. People may use more complex models for the underlying pricing and risking, but they will quote option prices in black/black-scholes format as an implied vol.
I think the idea is that you spend the recession years in a relatively safe albeit badly paid position which can potentially lead to more lucrative opportunities in the post-recession years. This makes some sense except that your skill in predicting recessions is likely horrible and you probably shouldn't be planning your career based on it.
> Anecdotally, when I watch a baby learn to walk, it doesn't really seem like they are trying a zillion things and picking the one that works. It seems much more like their instincts are telling them to move a certain way, and once they grow strong enough, it succeeds and they are walking.

How much of that comes from seeing everyone around them walking?

It seems hard to argue that horses don't have a genetic component, but I don't think Occam's Razor applies as well for humans when it takes 1-2 years of observing the world in order to start walking unsteadily.