skysight-inc/HackerNews huggingface dataset:
Not the first time I have heard of gravity batteries, and with the exception of dams, they all look unconvincing.

To make a comparison, there is a human-scaled variant of the concept in the GravityLight by Deciwatt. The concept is clever, it involves lifting a bag of rocks to get a bit of light for 20 minutes. But if you run the numbers, it is tiny. As the name of the company suggests, the generator outputs 0.1W, enough to power a 15lm LED. For 20 minutes you need to lift a 12.5kg bag 1.8m. That's around 0.03 Wh per lift. By comparison, a good 18650 battery is around 13 Wh, about 400x more.

As a niche product, GravityLight is not a bad idea, but it is telling that their new product, NowLight operates the same way, but they replaced the bag of rocks by... a 18650 battery.

Back to the topic, it looks like that "drop a weight in a mine shaft" idea does worse than what you can do with a single Tesla car, which have more energy storage and more power at the wheels. Plus, it is cheaper and you get a whole car with it.
Utah has excellent energy storage possibilities. In addition to lots of topographical relief for pumped hydro, there is a salt formation near Delta that could store enough hydrogen (in solution mined caverns) to power the entire US grid for 30 hours. It would make more sense for them to go with rapidly cheapening renewables + storage than to try one more time to make nuclear work.
So much this. Let's keep our actual utility functions in view. Who cares whether or not it's technically a "monopoly"? It sucks!

Worth remembering that "monopoly" wasn't a bad word until we decided it was in the early 20th century. We can decide other things are bad too.
How to Learn from the Experience of Others as an Entrepreneur
You can do that in azure devops. By default, it shows all commits and then you can go to the commits tab and select the ones you want to view ( multiple or single)
> As usual everyone is fixated on price when the real hurdle will be scale

If it's way too expensive (and there's no obvious way to reduce costs), then scalability is irrelevant, which is probably why people are fixated on it. We need both scalability and price to be favorable.
I think you are suffering a bit from survivorship bias here. Way less than 0.001% of Roman buildings are still standing and the ones that remain have been continuously maintained over the centuries. If humanity will keep maintaining the White House for centuries it will look just as good in 4021 as it does today.
> I don't really get the "movies / TV series preferences"

Basically, I'm experimenting with my dating app. I built the dating app with the premise on some people want to find dates in Linkedin. So I give them space in SwanLove.

Then I'm thinking of adding other social medias to it. So you can find dates in GitHub, Twitter, Strava, Chess.com, etc.

In a nutshell, SwanLove adds dating to any social medias.

Then some people tweeted about creating a dating app based on movies preferences. So I added that to my dating app as well.

I'm throwing many darts and see which ones are stuck.

> I beg you please never sell out to Match Group

So a couple of days ago, some people in HN criticized me on creating this centralized dating app. It would become a honeypot for hackers. So that gave me an idea to build a decentralized dating app (like GitLab or WordPress).

Yes, I'll do my utmost not to sell out to them.
It's just around the corner from my office. If we ever return to the office I'm going to pay it a visit. Tim is such a great example of the classic British eccentric, I love it.
That make me think more of Javascript, which distinguishes between undefined values (usually means “not set”) and null values.

You’re correct that a Perl scalar can always be set to undef, which is the Perl name for null. But that’s not really unique to Perl. For instance, while a Java boolean can’t be null, a Java Boolean can be.
Asia has 4.6 billion people, of 8 billion in total. If technology is distributed equally among all humans, most technology will be predominantly used by Asians.
Are you suggesting we should build a bigger planet?
Seems like a whole lot of extra trouble to be honest. What happens when you need to create a composite index?
Aslong as the message from the deepfake or lookalike actor is authorized by the person you’re intending to speak to.

That’s mostly the problem here.
I don’t see the benefit. This is what changelogs are for.
well technically, everyone else would still be in front the lens regardless of how wide it is.
What is the alternative? The government themselves claim it to be a deepfake[1], not the news.

[1] https://www.volkskrant.nl/nieuws-achtergrond/kamerleden-verg...
such a nihilistic view has little ground in reality

> been outside of low earth orbit

we stopped pushing that frontier because we've been there and found it dull and empty, as a matter of fact, we decided zero g experiment were more important than playing with regolith, and build a freaking human habitat in the void to support that endeavor. beside, we've got regolith here on earth now, we can experiment on it in the commodity of our backyard if needed be.

> mach 3 flight

except the routine space launches that ship scientist back and forth from the space station, going through literal plasma on the descent leg.

> Roman concrete

this has just been widely romanticized, we don't use that because it's incompatible with fast building processes requirements, is too heavy for large structures and it's hard to dismantle when a structure is no longer needed or need renovation.

sure, some other stuff one can cite as having reached an apparent sub-optimal minima, like average speed of travel, but that's not because we're backward, it's because we're learning to take care of our own environment. slowly, but we're getting there. just because the tradeoff are different it doesn't mean that a golf id3 is just worse than a bugatti eb110 or a recess from peak technology.
This is a bit misleading. With bikes, you usually only do a couple of km per day, whereas with your car you probably do 10x that.

If you look at the absolute number of deaths, biking is reasonably safe. As I said before, cities can do a lot to make it even safer, such as good bikelanes, better traffic lights for turns, better driver's education and so on.
These days have little to do with historically. The bay is hemmed in by hills and water. LA is similarly hemmed in, creating a nice bowl that traps pollution. Seattle and Portland are both hilly, you are not at a flat grade. Berlin, Amsterdam, Copenhagen are all flat in contrast.

Cities with lots of hills in Europe don’t have as many bikers or biking infrastructure. Eg Lausanne unless you want to go for a jaunt by the lake. Cannes was the similar during a short visit I made 20 years ago. Hilly south Europe (Athens, Rome) doesn’t seem to like bikes very much either.
I think you’ll find its pretty split. Lots of people prefer the privacy of a private car and large yards, but others would prefer walkable denser areas.

On the whole it might be slightly trending to the latter.
>Since that is usually not a thing, what other options do people that want freedom and privacy have?

A realization that your desire to access music and content with freedom and privacy DOES NOT SUPERSEDE the creators right to profit from their work. Look at where you are -- do the people in this community deserve to be paid for their code? Or can you take it from them if their feelings about privacy and freedom do not match yours perfectly?

I could say, I want bread but I don't want to contribute to capitalism, what option do I have? I'll just take. This isn't how we run our society. It's not how good people behave.

If you cannot abide by the authors/owners wishes, then you must set aside the entitlement you feel towards their work and simply move on without it.
That's the one thing I didn't do online. Early on, stock was just so limited and, by the time it wasn't, it just seemed easier to go in person. I was more organized and would go early-on once every week or two and it took me well under an hour.
>You would say that hitting on women is not appropriate in gym. So which places are okay to hit on women? My female friend told me that it's okay to hit on her in yoga classes.

Well, she said that, some other woman might say otherwise.

In general, this is mostly a charade. Being accepted is mostly about being the right person and having the right timing, not about whether space X or Y is appropriate or not. People have hooked up succesfully in every kind of place, including work (heck, especially there), hospitals, and funerals.
The questionable value of two decades of cybersecurity advice
There is a screenshot: https://www.volkskrant.nl/nieuws-achtergrond/kamerleden-verg...
Some eager SJWs, I'll give them that
Where Is Chinatown Vegas? – Chinatown Vegas
Specifically, my left foot. It's more annoying than you'd think: I've had people in and out of my apartment with rulers for weeks, and taking my shoes on and off all the time is a hassle. I finally sent them all packing when someone showed up with a hand saw and an anesthesiologist.
I was thinking the meaning of the caption was ray tracing light through the lens from a single point on one side. I suppose you could stick your head in a fishbowl that is sitting on the ground to get the same effect, as long as there are no planes or manned spacecraft directly above you.

Technically you can do that with a planar lens if you stick your eyeball onto the lens.
When the ID changes on the tag, a nearby device can link the two id's together since they're in the same 'position' (i.e. id x was at y position and now id z is there, so id x = id y). However, someone who is not there wouldn't be able to link those ID's together. This gets you the privacy feature and the anti-stalking feature. (The anti-stalking feature likely wouldn't need a perfect series of matches; if you have a good chain of them, you'd have good confidence.)
But selling previous models isn't interesting to Intel.
Or David Galed-himself to "prove" that the banks hire assassins when someone speaks against them...
> That goodwill pays off over the long term in money terms.

no it doesn't. Goodwill merely keeps the company in the limelight, and if they sell some goods/services, this goodwill is "free" marketing. Good will doesn't pay debts nor obligations.

> it's hard for me to accept they're a cold, calculating money-grubber

better accept it, and the sooner, the better!
Did you know that when you cut grass it sends out distress signal - the lovely smell of fresh cut grass. In principle it is the grass screaming out loud in horror. https://www.mentalfloss.com/article/30573/what-causes-fresh-... Unfortunately we can't survive without hurting other species.
> I think you own your body when you die the same way you own your money: you can specify what should be done with it while you are alive

You have the freedom to specify what exactly should be done with your stuff when you die. Whether those wishes will be legally enforced will depend heavily on what they say.

To test this thesis, go to a lawyer in your jurisdiction and ask them about whether it would be possible to split the proceeds of your estate in equal shares with every man in the Greater London area who wears brown shoes on a Thursday, and prepare for a short explanation of administratively workablity.

Then ask about whether you could posthumously fund some international terrorist organisations. Actually, maybe don't.
Another fun way the Chromium development team is thinking for the end users.
If all kids in your neighborhood get sick, including yours.

Do you first try to heal your kid or everyone at the same time?
You can do both. Use the UUIDs where you need the scalability and serial where you don’t.
In a sense we already have that. PGP works over pretty much anything. You would just send a signed message over the text chat function using ASCII armor.

As with any authentication system the hard part is knowing who owns the PGP identity in the first place. We don't print the PGP fingerprints of famous people in news reports. Perhaps we should.
An Introduction to Computation Expressions
It's pretty unbelievable that someone would do something so insane as creating a script that parses pull requests and automatically merges code from anyone that satisfies some condition.

Any sane person would just have the script approve pull requests from trusted parties instead to achieve their goal.

This in addition to the incompetent programmer who managed to write code that incorrectly parses git diffs.

I think it's important to point out the identity of those people so that there are at least some reputational consequences for the catastrophic harm people like these cause.

The main culprit of this, the person who due to their sheer incompetence and negligence put all Homebrew users at risk of total system compromise by authoring and committing the insane automerge code, seems to be "Markus Reiter", "reitermarkus" on GitHub, who claims to be affiliated with the University of Innsbruck in Austria.

The person responsible for recklessly promoting code as a "Ruby library for parsing the unified diff format generated with git diff" despite the code not correctly performing that task is Andrew Olson, github user name "anolson", claiming to work at Kajabi in Blacksburg, VA.

At fault is also whoever gave "reitermarkus" commit access to the Homebrew-cask repository, and the whole chain up to the Homebrew founder, although it's not clear to me whether it's possible to determine that from the GitHub interface.

The Homebrew founder, who through their reckless assignment of commit rights to incompetent programmers is ultimately responsible for the catastrophe, is Max Howell, "mxcl" on Github claiming to be from Savannah, GA.

According to the web, this person was not capable of inverting a binary tree during a Google interview (a task that any competent programmer can trivially perform), so maybe it's not surprising that he initiated such a catastrophe.
>An honorary degree performs exactly the same function.

No, it doesn't. Richard Stallman didn't put in the work to earn fifteen doctorates, he hasn't earned the right to be considered on par with someone who put in the work to earn even one.

The function of an honorary doctorate is the same as the function of a key to the city, which is to say an ego boost to the receiver and publicity for the giving institution, but make no mistake - a real doctorate and an honorary one are not the same. The former takes years of study, discipline and effort, the latter requires literally nothing but showing up.
You can do indexes that are composites of plain field values and/or expressions! At least in Postgres.

As for the trouble, I agree, it's a bit more involved.
A couple of things to consider:

This is a marginal case of private use of public lands. These are shelters, rather than homes. The size (2' by 6') and construction offers little more than physical security while sleeping.

There are reasons why some homeless people prefer parks. For example: parks tend to be closer to social services and other means of support. There are also homeless people who find other places to squat.

> If we are going to support them, we can support them to live somewhere less desirable.

Unfortunately, there are also people who believe that type of support means forced relocation. There are many reasons to oppose force relocation. In the mildest of terms, it is never intended to solve the root problem of poverty.
I think that Delia Derbyshire has been discussed here previously.

But women have played a huge role in all types of tech, since the early days (can you say "Grace Hopper"? I knew you could!). In the old days of "big iron," the people that actually touched the computers tended to be women. The men did their work with pads of paper. I started programming in the waning days of "big iron," and the roles had started changing. I think that a majority of the staff at Bletchley Park were women.
It's not obvious to me what the bounds of "all websites" are.

The list of all phone numbers is obviously enumerable. There's a registry and a flat list of phone numbers. But, resource constraints aside, is it possible to enumerate all websites? I suppose you could theoretically enumerate every domain name, but that isn't necessarily the same thing.
Why is it easier to halve with the imperial(I assume that's what you mean by 'English') system? Could you give an example?
Plenty of other countries still use “foot” as a measurement. Try asking a Canadian or Brit how tall they are in cm
Two large quad rotors (hex-rototrs?) attached to the feet.
Max distance of under 300 meters.
> You can then manually put the into the diff view of Github and see what changed.

GitHub throws up 404 when I do this. Same with simply trying to view the old commit directly using the `.../commit/<hash>` link.
That way lies a slippery slope ;) It's pretty close to the "Ruinenwerttheorie" of the German Nazis:

https://en.wikipedia.org/wiki/Ruin_value
Surely this seems too hacky to be of real use?
Useful inequalities cheat sheet [pdf]
https://altstore.io/faq/

Not exactly "first class" is it?

"I followed the instructions, why is AltStore still not installing for me?" > This could happen for a number of reasons

"AltStore freezes/takes forever to sign-in." > This could happen for a number of reasons

"AltStore says “Could not find AltServer” when trying to refresh." > This means AltStore could not discover a running AltServer on the same WiFi network

So you have to run your own local server? And it's janky as all get-out? This basically proves the point. If your app isn't on the app store, for 99.999% of users it doesn't exist; they will not be able to install it.

At least on Android you can hand them an .apk and they can trivially install it.
Did this site seriously hijack my browser's back button, so that after trying to read the article, it made me go "back" to their front page?

That's some really shady BS.
I can't help but think this is a huge step backwards.
>It explains why billionaires in Sillicon Valley wear H&M t-shirts and not L&V

Cucinelli and Loro Piana, not H&M :)
TrueVault (YC W14) Is Hiring an Engineering Lead
Funny you should ask, we recently made a platform with exactly this in mind https://ninfex.com/hello
No, not exactly. It is the case when this data is related to a single person. E.g. "has this person subscribed to my newsletter" vs "whan has this person subscribed to my newsletter".
I take your point. It's worth studying these things out of curiosity, but I wouldn't seek guidance from these fables any more than I'd seek Napoleon's advice on air-to-air combat tactics.
There is a whole slew of problems.

1) There is still an expectation women will marry up, and men will marry down, in terms of income potential. If the woman is a little bit ahead, it's okay, but e.g. a doctor marrying a nurse is perceived as acceptable in one direction, but taboo in the other. This means there is a growing shortage of mates for men at the bottom of the socioeconomic heap, and increasingly, women at the top (unless college-age and pretty).

2) Overlapping and poorly-defined roles make for a lot more conflict in marriages.

3) Divorce laws vary by states, but in the most liberal states, tend to be punitive towards men; the de facto standard is women get the kids, and men pay (massive, debilitating) child support. At the same time, the legal industry works hard to increase divorce rates. With half of marriages ending in divorce, this leads to all sorts of misaligned incentives and imbalances which are taboo to talk about, but interplay in complex ways. Marrying down is now a huge liability.

4) And, as you pointed out, social classes are much more likely to calcify.

We kind of got to where we are randomly, without thought or planning. We had a bad system (women were oppressed), and we pushed hard against it. It snapped. We landed somewhere pretty random and still pretty dysfunctional; just dysfunctional in other ways.
Well, in browsers there's `HTMLMediaElement.canPlayType()` which returns one of the following strings:

- "probably"

- "maybe"

- ""

Reference: https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaEl...
The WASM build uses the 'normal' CPU core. In this core the CPU emulator is a collection of indirect calls that performs poorly in WASM due the runtime checks to verify the number of parameters and their types.
For other builds there is a dynamic code generator. A similar approach would work wonders. Assistance gratefully accepted! - see source folders under emulation/cpu for armv7, armv8 & x32 for the 30 odd method implementations.
To get native like performance a binary translator like that used for the x64 core is required
AFAIK the Russians were mainly concerned about the ability of the Space Shuttle to quickly change its orbital plane, combined with the planned high frequency of flights (which never happened though) and high cargo capacity.

Put a few nukes on the Shuttle, and you can drop them anywhere in the world with much less warning time than intercontinental ballistic missiles. At least that's what I read about the reasoning of the Russians building their own shuttle, because when they ran the numbers on the Space Shuttle they concluded that a "civilian use" didn't make much sense.
My wife is a welfare case worker and freely shares her experience with this sort of thing at the end of her day.

It is her observation that mental illness tends to precede everything. It tends to be what leads to addiction, though self-medication. It tends to lead to homelessness through a lack of cooperation with the housing providers, with the welfare providers who would pay for housing, or with the ability to live in a closed space. Even if your rent is paid by the state the landlord will kick you out for destroying property. When the leprechaun tells you to burn things, don't light a fire on your bed.

There are the generationally poor, the people whose luck took a turn for the worse, and refugees from violence but those populations don't usually end up living rough unless they also develop mental illness.
I once saw a video (reenactment but original voices maybe?) of how one of these images was taken. How the earth appeared over the horizon and they scrambled to find a camera or so. Anyone knows which video I'm talking about and could help me find it?

Edit: finding out the picture in question had a name, Earthrise, made it easier to find. Here's the video https://m.youtube.com/watch?v=dE-vOscpiNc
I also like to use emoji for favicons and made a couple of sites to help with it:

https://emoji-favicon.fileformat.info/ - pre-converted ICOs of the Google and Twitter emoji. I especially like the flag ones.

https://favicon.fileformat.info/ - converts SVG to ICO

Sources for both are available (links in the footer of each).

For my personal sites, I serve both favicon.ico and favicon.svg files in the root directory, though AFAIK I'm the only one that uses the favicon.svg file.
I realy like the design of this baterry: Its simple, easy to build and mantain.
AFAIU this is trunk based development. It's just way easier with a system like Gerrit than it is with GitHub.
Now I'm seeing heads of state, exchanging slips of paper in a GPG keysigning party, in my mind's eye.
The more or less dead mall fairly near me--there is still a thriving grocery store and Home Depot in the surrounding complex but not part of the mall as such--had as anchor stores JC Penney, Macy's, and Sears. It's in a smaller city. That (and even more rural areas--surrounding the smaller city is a lot of farmland such as where I live). There's nothing there to support significant co-working space.

The luxury malls in cities that would support more co-working space--though ask WeWork how things are going--are mostly doing better.
You're right, but the question is, how absolutist should we be on that principle? The results of free sharing of "information" can be seen in measles outbreaks, for example.