skysight-inc/HackerNews huggingface dataset:
Yup

Seven-ish years ago while working on a hybrid-powered UAV I was checking out high power/weight engine platforms. I found a significant variety of regular Wankel engines that had MUCH better power/weight ratios and were available for purchase (not "real soon now").

Since power/weight is Liquid Piston's main claim to fame, this is rather important.

Today, a quick DDG search similarly returns many Wankel-based engines that definitely have better powr-weight ratios than Liquid Piston. The primary markets seem to be lightweight aircraft and some motorbikes.

The first one is AIE 80S [0]. It puts out 15BHP/11.2kW at 5kg/11 Lbs.

AIE's 225CS puts out 40BHP/30kW at 10kg [1].

In contrast, Liquid Piston's XS-210 weighs 21kg/46.7 Lbs to produce 19kW/26HP (third page of PDF spec sheet in button on [2]).

The net power/weight for these Wankels is 2.24kW/kg and 3.0 kW/kg. Compare this to the Liquid Piston XS210 0.9kW/kg. Liquid Pistoin's main advertised performance is between 1/2 and 1/3 of an already available Wankel. And there are many more Wankel options.

Plus, despite power/weight being Liquid Piston's main claim to fame, I have to wade through multiple pages, multiple "Invest Now!" popups, to finally dig down to their PDF spec sheet to even find an actual weight figure. In contrast, whereas the Wankel's pages post it right up front.

It is quite obvious that the Liquid Piston people know that they are not even close on their main claim to fame, yet are willing to just act as if they are the best available and count on people not actually doing their due diligence.

They literally look like they are in the same position as 7-8 years ago, "ohh we have this great lightweight new technology, shipping real soon now -- get in on the ground floor!!" I used to look at it as "maybe they'll get better". But at this point, it is pretty clear that they know they have nothing groundbreaking and are just trying to ride it as long as possible.

TBF, they MAY have a possible market using JP-8 fuel which is widely used and available in military contexts. But Wankels have been adapted to many different fuels and it would only be a temporary advantage if someone wants to get into this market.

Don't be parted from your money here....

[0] https://www.aieuk.com/80s-15bhp-wankel-rotary-engine/

[1] https://www.aieuk.com/225cs-40bhp-wankel-rotary-engine/

[2] https://www.liquidpiston.com/xts-210-engine
I am explaining the point of the paper. If you don’t think a parody based on that point is useful, maybe take it up with the take it up with the authors, Duh!
That is not true. (TM) has a legal meaning. It's weaker than an (R), but it is still an enforceable trademark.

It's similar to creating a work covered by copyright vs. registering it with the copyright office.
iPad I think.
So 1- I was not referring to cryptocurrencies, crypto market is way too small anyway 2- I'm referring to every country except the US, obviously...

From Middle East to China or even Japan, every country is reducing their global reserves in dollars, and diversifying in other (national) currencies. Also, many countries are trying to conduct trades in other currencies than the US dollar.

Basically, I'm just referring to the decline of the US dollar and that's welcome for everybody except maybe for the US government.

https://wolfstreet.com/2023/04/02/status-of-us-dollar-as-glo...
As a native English speaker, my brain has a strange habit of processing foreign-language films with subtitles seamlessly, while viewing subtitled English-language films/shows feels much more cumbersome. Now that I think about it, the English-language subtitles are more often than not closed-captioning, so there are descriptions of sounds in addition to the transcribed dialog. Maybe that's what throws me off.
As a vendor that tried accepting crypto I can confirm that it's basically non-existent. And the few transactions that do take place have a lot more issues than regular payments: https://blog.shodan.io/accepting-crypto-a-vendor-perspective...
I agree. I don't need much space, but since I work from home I like to separate my work environment from my living environment.
What kind of non-admin entity has permissions to assume any role with `sts:AssumeRole` on `*`?
Slight tangent: Is a UNIX socket faster than TCP over loopback?
Work stress man, it'll kill you
My experience with Coinbase led me to ask people "where do I sign up for the class action law suit?" so this is welcome news.
You mean if you invest your USD into a Money Market Account its able to generate a yield?

How can one sell a Money Market Account for more than they bought one for? The USD isn't generating a yield the Money Market Account is.

> There are people that make serious money just from trading between foreign currencies at the right time.

And if you advertise the GBP as a way for people to invest their USD on the premise that they can sell the GBP for more USD in the end I bet the SEC will not look fondly on you. There are also people that made bank on the stock market; doesn't make it not a security.
This makes me realize that the gestures it is being demonstrated with are going to be hilarious if they are misidentified. I'm /assuming/ that the thing will not pick up gestures between you and someone else. Such that if I pick up a paper with a similar hand shape as their "pinch and move things" gesture, it will realize it wasn't the same.

Or will this be akin to how siri does a shit job understanding anything that is not mechanical in speech? Will be absolutely hilarious if it has a hard time recognizing non-light skinned hands for the gestures. Really hope they don't make that mistake.
Is LATAM hot for crypto, or just one guy in El Salvador?
Because you don’t even know the discord server exists. So how is what they’re currently doing attracting the users searching for communities and answers?
Pretty sure China had no part in popularizing it and third party apps had support for it on iPhone a long time ago. I was seeing and using QR codes here in the US back in 2010 or so pretty commonly. They were limited to college campuses and SF bay area then but still were around plenty.

I remember being frustrated that my non-smartphone flip-phone didn't support them (and no way to add support for them either).
The article drips with bias. I gave up reading and will research this myself.
Devil's argument time. They add support and there's little adoption. Worse yet, it's a meaningful amount of adoption that deprecating is now it's own criticism cycle. So now Google is being forced to add support and maintain an image format because of evangelists?

I think the problem here is that W3C is lagging on listing which image formats are standard and vendors are shipping their own in-house tech in the vaccuum (and that W3C is composed of browser vendors means Google, Apple, Microsoft, Mozila & whoever is there from the community can't agree).
But non-brokered CDs are also locked, and are not considered securities.
‘Your Balls Are Back Online:’ The Ritual Where Bros Platonically Cum Together
The “i” stuff feels really outdated now. The Apple Watch was not the iWatch. There are too many competitors who use it to mean too many cheap things.
iOS 17 Lets You Insert Contacts and Passwords into Any Text Field
Congress people are exempt from those laws. Why wouldn't they be, they literally wrote them
Astrud Gilberto has died
There is literally no other laptop on the market that would be anywhere close to an M1 air in terms of performance-battery life combo. And it is definitely not even on the upper end in price for that, tiny windows laptops are ridiculously expensive!

So, are they really expensive?
Just a side issue, but... can we drop the VR vs. AR terminology now?

It just leads to pointless arguments, e.g. about whether a person said VR when they meant AR, etc. and to the awkward MR and XR terms.

How much is real and how much is virtual is inherently variable, and good devices (at least for general purpose usage) will make it quite fluid.
I mean, yeah if you come to any os with an explanation that it works exactly the same as other os you are going to have a bad time.

I use windows for CAD work and macos for everything else and the switching is annoying for sure.

In terms of functionality (given you actually take time to learn the UI paradigms) neither windows or mac are inferior. You can do all the same things on both. So it all really comes down to familiarity such as “i hate using cmd key instead of ctrl”.

I don’t disagree with people saying “i am more used to windows” - it is true. But there is nothing about macos that is worth not liking.
With the high cost of cloud storage I see it as a pretty big burden to host multiple copies of an image, particularly if you feel compelled to have multiple optimized images such as JPEG, WEBP, AVIF, ... That's why I didn't start using WEBP for images until support was universal enough that I could give up JPEG.

(For a large image collection you have some images that are heavily requested and most of the cost is network transfer, but you also have many images that are infrequently requested and for those the cost of storage in the dominant factor. I launched a large image collection in the late 2000's and many sites that did the same thing at the same time were ultimately crushed by running costs, Pinterest and Instagram were survivors, overall the economics of video collections turned up to be better than images.)
As said before, the commiter of the JXL removal is an AOM contributor, and the manager who approved it has given presentations on AV1.

This is politics, not a technical discussion.
There is enough variety with wider regional subreddits on the national/provincial scale so that doesn't bother me much. The Toronto subreddit is by far the most dominant and the only general Toronto subreddit worth subscribing to which makes the censorship more aggravating because you can't really get Toronto news elsewhere on reddit.
That's not far off tech in general though
> That's not correct. Firstly, it had taken off in Japan a long time ago.

It was in fact invented in Japan:

* https://en.wikipedia.org/wiki/QR_code
Giving individuals the power to be their own banks is not useless. Unpractical maybe, but not useless.
That’s not enough. Apple built its headset on top of 15 year mobile OS that has been ported across devices, custom built silicon, custom built cameras, screens, etc. Out of all the BigTech companies, Apple is the only one that does custom hardware at scale.
I think you’re overthinking it.

I was considering buying a new studio display for my Mac Studio. I have a single 4K display that is fine most of the time, but for serious work, I want more. That purchase is now on hold until I’ve tried Vision Pro.

For just this application alone, Vision Pro is interesting. As well as a desk, my office has a sofa, and a round conference table. I like to be able to move from one to another for different activities because it’s better for my body. Being able to do this and still access my Mac, or have computing surfaces floating nearby would be a huge benefit for me.

I also have a living room with a TV in it. For me, TV isn’t a social activity - it’s just a way to unwind or watch something of cultural significance. I would love to be able to remove the TV and arrange the room in a more social way. I’d also like to be able to watch movies etc. in other rooms.

I’m considering having roommates, and being able to sometimes watch large screen content in my bedroom feels like it would take pressure off the shared spaces, and allow me to downsize my personal use of space more comfortably.

If it works as well as is claimed, it’s practically a no-brainer for me to buy even at $3500, just based on the added freedom it would give in my own home.
Java has been stable for years I think, they don't switch frameworks and paradigms every weekend. Code you wrote in 10 years ago in Java8 most probably don't even need a refactor for Java 22. And funny enough just yesterday there was a thread on reddit where people still claim to be running Java 8 on prod, now that's not a good thing but 10+ years even after deprecating means something here.

Simplicity, you can code Java apps to be as simple as possible, unless you use a framework like spring, but that's true for any language. I used vert.X and it's expressJS of Java, very lean, basic but more batteries available if needed but still manages to be simple. Java doesn't have complicated concepts to understand nor does it have 100 ways to do the same thing.

Scalability, dockerize and scale to your heart's content or tweak the JVM params and max out your hardware.

What am I missing, not trying to be snarky, maybe you wrote more Java than me, may be for years, so genuinely curious to understand.
For additional context, I coded in NodeJs, Python, Go, Swift and Java. and each have its own merits. So I'm not biased against Java.
Centralized sites can never be free speech zones. Twitter wasn't then and isn't now and never will be because it's a centralized system owned by someone.
Lots and lots of people were waiting for the iPhone 3G model and skipped the first one.

Considering it's the only model with the cell tech in the name (there's no iPhone 5G), I think even Apple knew the first model was a ground laying device, not the "pave the world" model the subsequent versions would become. They still weren't even committed to the app store yet.
I'm not convinced it is or will be an "easy win" because the entire space is still so fundamentally flawed. Everyone I know with a VR headset has one...and barely ever uses it (similar to the smart speaker, which Apple also failed at.) Not because of quality of hardware or software (Meta's stuff is actually pretty impressive now), but that it's awkward and it's strapped to your face. I don't see how this really addresses that aspect.

Apple can surprise you with how successful things they make can be, but I can't think of a product they have now that wasn't already in space with tons of successes. Phones, tablets, watches, earbuds, all were already fairly popular. Tablets maybe being the one they really brough into the fold of common use, but the others already existed they just "perfected" them. This is...mostly a failed space with very little penetration. It will be much harder.
It's almost unbelievable that someone would put something so monumentally incriminating in writing, but there it is.

Those boys are doomed.
> Some of the communities have announced they will remain dark until Reddit reverses their decision, so it will vary by community.

If the sub is popular enough Reddit will take it over and appoint new mods. Has happened before and will happen to some of the subs that choose to go dark as well.

> But this is, I think, where money comes into place; I fully expect some of the 'volunteers' for some of the more popular communities have found a way to make money off of it.

Definitely. Every (lead) moderator of a decently popular community is getting kickbacks one way or another. They do it for "free", but the only ones doing it without some compensation are absolute suckers.
UERANSIM: Open source state-of-the-art 5G UE and RAN (gNodeB) simulator
> They have desperately been trying to figure out how to register, to the point of suing the SEC to get information, and the SEC has time and time again refused to provide any information about how to do that.

And yet, despite how they spin it in press releases, their _filing_, which is where the rubber meets the road, says nothing about "figuring out how to register", but rather says that "for many tokens, registering is not possible due to effort involved, or not economically viable" (surprise, surprise, Coinbase doesn't want to absorb the cost of registering securities when it comes to the Shitcoin of the day).

In other words, "we know how to register these tokens as securities - but our business model doesn't make it possible to do so profitably".
Or that's a well-documented public history of the SEC taunting Coinbase.
Yeah, there’s a big up front cost and it’s an almost total gamble.

My spouse’s company bought an engineering team Oculus headsets. The thinking was they might generate new ideas and concepts worth exploring further.

My understanding is that they use it for virtual golf games in lieu of Zoom meetings sometimes, and that’s about it.

I think VR has a future, but I don’t think it has a broad workplace future. Medicine? Absolutely! Gaming? Sure! Office work? Ehhh
Software support for WebP was also a massive problem up until the last few weeks. Because Chrome forcibly converts image files to WebP, it made my Photoshop work a hassle.
I do understand what you are saying, I just don’t agree.

If it is your expectation that Apple would make an openly hackable headset, I think you have unrealistic expectations, so I find a strange thing to be frustrated about.

As to what is better, open or closed, I think it is very challenging to deliver a complete product in an open way, I can’t think of one successful consumer device that ships in that way.

When I consider privacy and security, the locked down devices Apple create are a positive, especially with a device as personal as a headset with eye tracking etc.

iPhones are not boring, they are used by billions of people to do amazing things every day. Don’t Under estimate the significance of ‘boring’ things like a high quality camera and the ability to share photos easily, Apple Pay / Wallet, and safari in your pocket. It is literally life changing for people, eg grandparents can get daily photos of their grandkids, that is the kind of thing Apple try to do with their devices and services. TBH I don’t know what that ‘boring’ thing is with the Vision Pro, but I’m sure if there’s a future where headsets / glasses are common place Apple will be part of it, and this is the starting point for it.
> I’ll be honest: what this looked like to me was a divorced dad, alone at home with his Vision Pro, perhaps because his wife was irritated at the extent to which he got lost in his own virtual experience. That certainly puts a different spin on Apple’s proud declaration that the Vision Pro is “The Most Advanced Personal Electronics Device Ever”.

> Indeed, this, even more than the iPhone, is the true personal computer. Yes, there are affordances like mixed reality and EyeSight to interact with those around you, but at the end of the day the Vision Pro is a solitary experience.

Absolutely. I can imagine myself using an Vision Pro from my home office. I can imagine myself using a Vision Pro while on a plane. So I can imagine using it either where I'm already physically alone or where I want to be physically isolated from other humans nearby.

I can also imagine myself using a Vision Pro to connect with other humans who are physically distant (the FaceTime demo).

What I cannot ever imagine is having the Vision Pro on my head while interacting with other people in the room (the dad watching his kids demo), nor can I even imagine using them as part of a shared entertainment experience. e.g., I cannot imagine my wife and I each having a pair of these and using them to watch a movie "together".

But, watching a movie with other people when we are all physically distant from each other? Yes, that I can imagine.

I can see myself buying a pair of these. I'm fascinated by the technology and by the ability to use them in my home office.

I don't really see them taking the place of my home theater, but maybe... 95% of the time I use it alone because my wife prefers to read a book.

> I am completely serious when I say that I would pay the NBA thousands of dollars to get a season pass to watch games captured in this way. Yes, that’s a crazy statement to make, but courtside seats cost that much or more, and that 10-second clip was shockingly close to the real thing.

Personally, I think that watching a game while being virtually part of the crowd would leave me feeling lonely and isolated. It's one thing to watch a game alone, seeing the other people cheering. It seems like an altogether different experience being part of the crowd while not really being part of the crowd.
Microscopic Pillars Can Recycle Waste Heat as Energy
Binance was up for “money laundering and tax offenses” issues because they deal with large sums of fiat money independent from what’s being sold. Replace Bitcoin with physical artwork and you can still run into issues here.

Coinbase similarly ran into issues not because they were selling crypto but from related activities which fall under SEC regulations. It’s one thing to operate an auction selling pigs or crypto, but when you start getting into ‘related activities’ they don’t necessarily fall under the same umbrella. Read up on “Pork Bellies” and you might start to understand the issues.
I mained a 386SX in high school. Windows 3.x really chugged on that thing (only 2 MiB of RAM as I recall), but I learned a lot about Windows programming and x86 assembly.

Then came 1995, college, a Pentium, and something called Linux...
He wouldn't start answering. He was asked "yes or no, is ..." and would start hemming and hawing with words that were neither "yes" or "no."
> Google used to support JPEG XL in chromium

No, they had an experimental implementation, behind a flag. No stable version of Chromium has ever supported JPEG XL.

(The claimed reasons for the removal: https://bugs.chromium.org/p/chromium/issues/detail?id=117805.... This is the last comment by an @chromium.org account.)
US venture capital giant Sequoia to split off China business
I once worked in a computer lab for a graveyard shift on the weekend (midnight to 10am).

One early Sunday morning the clock started making noise. Chunk. Chunk. Chunk. Chunk. Moving the minute hand rapidly. It kept going and going and going.

The clock can only go forward. In order to set the time back 1 hour it had to advance the clock 23 hours, one minute at a time.

This also confused payroll when I handed in my time sheet.

12:00 AM - 3:00 AM (3h)
2:00 AM - 10:00 AM (8h)

They also had trouble when I did

12:00 AM - 10:00 AM (9h)

But they figured that it was going to be easier to just pay me an extra hour ($7.50 then) than it would have been to try to correct it.
Yes it’s all marketing. People have been saying that for 20 years. It couldn’t possible have anything to do with having hardware that is literally years ahead of the competition, tight integration between products, a better user interface, etc.
no, helicopters in LA (and "eyes in the sky" in general) don't contribute at all to effective policing or safety. they actually entice showboats to create a spectacle so they get on tv. this creates more public danger. and there have been a number of chases where the suspect was lost even so.

but all you need in these instances is an incontrovertible photo of the suspect and the car/license plate, witnesses of the crime, and effective investigation, just like any other criminal case. the helicopter is there for cops to show off and waste disproportional money better spend on investigation.

first responders are trained to assess situations quickly, so "situational awareness" has very marginal benefit (not zero, but also not much) in all of the use cases you cite. the extra overhead is simply not worth it in most cases. like legged robots, drones are a technology looking for a market, but there really isn't much market out there.

we don't need more surveillance tech. we need more dogged and trustworthy investigators and first responders.
It does solve few of them, althought it doesn't look it will be easy to scale to more than one engine.

For example the apex seals being on "the outside" instead of on the rotating assembly means they could be made easier to replace and easier to oil too.

But yeah, improvements look not all that big, certainly not revolution