skysight-inc/HackerNews huggingface dataset:
the m in that equation is the rest mass (m_0) which is a proper scalar.

the m in E=mc^2 is the relativistic mass which depends on rest frame and therefore isn't a proper scalar quantity and that isn't a proper tensor equation.

the (E, px, py, pz) energy-momentum 4-vector is a tensor that transforms to any reference frame with a lorentz transform. all observers will agree on the shape of that 4-vector object, although they'll measure the components differently. that equation is just the dot product (rearranged), where the rest mass is the length of the 4-momentum vector (and a proper scalar quantity that all observers agree on is exactly that value in all reference frames). the rearrangement introduces a negative sign which actually comes from the SR metric -- usually diag(-1, +1, +1, +1) but sometimes diag(+1, -1, -1, -1).
You threw out a database because it didn’t offer compression in your specific use case? That’s it?

Just solve compression on the block level, why are you so specific about it happening in the database? It’s probably one of the least interesting feature comparisons when betting on which database to trust.
Wow. Is Ars really stretching this hard? Can we not just let the evidence speak for itself?

Despite their desperate attempt to scarequote and chop up excerpts from a direct quote, they fail to demonstrate "Google exec said users get hooked on search engine like “cigarettes or drugs.”"

He didn't say that from what I'm seeing; the quotes they use don't say that, and anyone who can read can clearly see the evidence they provide doesn't support the claim. The unquoted part ("with /economics/ that[...]") even indicate it's not a behavioral observation.

That subheadline really detracts from the point of the article.
As soon as you mention childfree on HN, you get downvoted into oblivion. It’s happened to me quite a few times now. Perhaps people with children find it offensive whenever someone talks about a different lifestyle, regardless of their reasons.
> the focus on EVs is a distraction.

Indeed.

> EVs tend to shed around 20 percent more

... for the same capacity. Isn't it funny how people focus on per-vehicle numbers for one segment? There are more oversized gas-burning pickups and SUVs than electric anything, plus millions of diesel-burning vehicles that are even heavier. But somehow those all get left out of most stories on this topic. Truly a strange coincidence, everyone forgetting the same thing all at once.
Guide to Timescript
In France, workers build a castle from scratch the 13th century way
Senior programmers used to require 7-9 years of development. Now we have those folk called principal level. Senior is mostly used to say "not in the first year or two out of college".
ChatGPT and the Rise of Semi-Humans
The amount of sheer bile and hostility towards Musk on this HN item alone says a lot about the hivemind at work here.

Unsubstantiated claims abound.

I mean, it's OK to dislike Musk - there are one or two things he says which I don't like, but there also things I agree with him on; I'm a big fan of SpaceX, and I wouldn't ever purchase a Tesla (even if I could afford one), but I'm finding a lot of the bile being spewed here a bit of an eye raiser.

There's a guy on here who complains about "getting stuff from accounts they're not following" - and that's probably because they're on the "For you" setting rather than the "Following" setting; they're basing their dislike of X/Twitter on something they are in complete control of, in other words. I just have to shake my head at that one. And even if they were on "Following" - it's very likely one of the accounts they're following retweets a post from some account they might not necessarily be following.

There's a post on here accusing Musk of being anti-semitic; I've yet to see one anti-semitic post Musk has ever made.
America? Maybe. PRC? Probably
How in the world was WW2 a power play for the US?
My parent is also wishful thinking. There is no timeline where Ukraine keeps their nukes and the world is just OK with it. Ukraine would need to be far more authoritarian and non-EU oriented if it wanted to keep their nukes. It would basically need to be more like Belarus. And at that point there is no world where they want to break away from Russian influence and enter the EU influence.
Agreed. I hope chemo gets replaced by biologics too
A Penny a Function: Towards Cost Transparent Cloud Programming [pdf]
Fun fact for you, a lot of pubs in the UK are shifting to requiring photo ID to enter, and scanning that ID into a centralised system, often as a requirement from the police to retain their license to serve alcohol.

I ended up chatting to one of the bouncers at a bar a while back and he was telling me about how they refused entry to someone not long before because they were flagged as having caused trouble in a bar 70 miles away.

In some regards I’m not even against this, if you have a record of attacking women in bars I don’t want you in the bar I’m at, but this does seem incredibly prone to abuse. I can totally see someone who has a grudge getting people banned from every pub in the country.
More so an issue in NI than RoI, even back then according to older relatives the division was a lot less in RoI.
Every time there is a discriminator, someone suspects Ian.
What was the technical work you did? Was most of your time spent on market research, coding, blockchain, or designing/implementing algorithms?

I would pick one or more job titles that are both relevant to the job you're applying for and to the work you did and put those on your resume, e.g.

Crypto trader/blockchain developer/investment analyst (self-employed)

- Developed trading platform with X latency

- Implemented blah blah algorithm

- (Throw in more metrics about how you were able to beat competition)

The proof is the skills you built along the way, the same as any job you put on your resume. In data science, at least, we're rarely asked for references. Don't think of yourself as unemployed during that time, and especially don't call yourself unemployed.
Part of the answer is that people now are forgetting just how much goodwill Google had with the tech folks around the time Google came out with Chrome. It was open source! You could easily run it without Google! It was a titan squaring up against Internet Explorer, that did horrible things like not follow web standards or invent its own. And it was really really good.

It took a handful of years for tech folks to see Google (and Chrome) the way they do now.

Here is the most voted HN post from the time of Chrome's release: https://news.ycombinator.com/item?id=291946
The same way Europe and Asia have electrified their entire rail networks.
iPhones charge at 20watts. Doing that sustained by hand is probably fairly tiring but would be trivial wattage for say biking. From my experience the hand crank radio's would be pretty futile for charging a phone. There are some charging specific devices out there that can generate decent power.

https://www.amazon.ca/Powerhouse-Watt-Hand-Crank-Generator-Q...
european data plans tend to be cheaper iirc
Humans don't have 100dB dynamic range across their full hearing spectrum. We're less sensitive to high frequencies, which means you can apply high-frequency dithering to improve the dynamic range without adding audible noise.

https://en.wikipedia.org/wiki/Noise_shaping
They may be a factor in where the services are built; they are not a factor in consumer choice.

It's not like there was a European Facebook competitor that users shyed away from because of European speech restrictions.
Real engineering is about liability and licensing. "Software engineering" is just not a real thing as software people are not engineers.
> My question is if this robot drives on to my property, is it trespassing? The answer is obviously yes.

Surely the answer is “no” if it is delivering something you asked for.
That is the point of 2. The single application is the API.
English is my second language. I agree with your definitions except that I've always thought "several" is more than "a few". Say 3-5 is a few and 5-7 is several. 5 works for both, but 4 is too few for "several" and 6 is too many for "a few".
This doesn't matter much on the Amazon.

I live a few thousands of kilometers south from it, it is still doesn't matter a lot here. Brazil is passing through an abnormally hot season, but those come from chaotic reasons that can happen on any time at all.

Around here the summer tends to be hotter than the winter, but it's a slightly biased coin-toss. At the Amazon, it's much more random (slightly biased into being the hottest at the fall).
>It's a common property for secure messaging systems, and I don't see why emails shouldn't have it too.

Because emails, fundamentally, are not, and cannot be, a secure messaging systems.
You seem to have different issues than the person I'm replying to. Maybe your situation is different. If you nearest grocery store is 45 minutes away by walking maybe your situation requires a different solution than someone who has expressed interest to walk but stated that they might buy too many groceries to walk that home.
i heard enough about bluesky from an IRL friend that i finally went to check it out and…

sorry, but it’s got all the branding of a tech startup whose employees discuss “growth hacking” with a straight face.

https://bsky.social is just a giant splash screen where it’s impossible to learn anything more about the platform before signing up. there’s an invite system, yet simultaneously it’s supposed to be decentralized? Google around and you’ll find blueskyweb.xyz with an FAQ page which talks up the decentralization angle massively. search “how would one deploy a Bluesky instance” for an hour and eventually learn that the stack is split into like four different conceptual layers with meaningless acronym names and the parts that actually matter are closed source.

so idk, until proven otherwise Bluesky is just a PR campaign promising everything to everyone and what they’ll actually deliver is a complete mystery. still, i wish they would bridge to Activity Pub so that i could peek inside without having to tie myself to it.
Also from the US, I grew up with "couple few" used to indicate anything between 2 and, I dunno, 6?
how does this work? you have the "real" database and this "api" database makes queries to the real database? how does that work?
> The lack of a hangover after copious amounts of beer was quite a nice surprise though.

That's because it's actual, high quality beer that's been brewed right in Munich - in fact, being brewed inside Munich city borders is a requirement to be allowed on the Oktoberfest, and there are only a handful of qualifying beer breweries in the first place [1].

For those wishing to go: keep in mind that the beer served on Oktoberfest is an even stronger variety than regular beer which is in itself way stronger than what is called beer in other places of this world. And for heavens sake don't forget to eat beforehand and during a tent visit.

[1] https://www.tz.de/muenchen/wiesn/oktoberfest-wiesn-festbier-...
https://petapixel.com/2023/09/25/influencers-ruin-beauty-spo...

https://www.thenationalnews.com/lifestyle/travel/instagramme...

https://www.theguardian.com/commentisfree/2018/jan/17/instag...
That was Steve Ciarcia, his Byte column was called Circuit Cellar
I have an emergency radio / USB-C battery combo thing with like 5000mah and the math on the hand crank says I'd have to crank it continuously for like 48 hours to charge it. It's completely useless. I'd die from exertion just trying to charge it if I was stranded.
...and now Britain is a first-world economy with a very high standard of living and home to one of the greatest financial centers in the history of the world.
As an Irish person, I would not _particularly_ recommend Ireland in 1970 as a model to aspire to.

And even given that, the banks did not actually fail, they just weren’t operating, and the expectation was that they would start back up again at some point. When Ireland actually faced the banks failing, in 2008, we bailed them out and nationalised most of them, at a cost of almost 10,000 euro per capita.
Please give some examples.
That is absolutely not true. People can be trained to hear that difference when the testing is not blinded, however in triangle tests that ability vanishes.
agree with 1, hard pass on 2, I worked in a shop like that for a long time and as you end up doing joins and subqueries with the views, query performance goes to shit. the stored procedure part, (edit: on the other hand,) is a whole other level that I wont even get into.
WW2 wasn't existential?

If WW2 wasn't existential I don't know where the bar is.
According to a recent article in Portuguese (https://g1.globo.com/am/amazonas/noticia/2023/10/01/icmbio-v...) "[...] em alguns pontos do lago a temperatura está ultrapassando a marca dos 39°" so the correct value is "above 39°C".
I wonder what you think all those lethal things are.
> There’s a good point to be made that Russia could probably beat the US in conflicts that are not existential.

Russia can't even beat its next door neighbor who is supplied with the US's castoff tech

The US would destroy the Russian forces from a distance, even in non-nuclear combat, it wouldn't even be close.
Yeah this is something that probably will start outside the western world. In poor countries as solar and batteries keep getting cheaper we will start seeing new shapes for vehicles which wont look the same as cars of today. Such vehicles will have a hard time getting cleared for the streets in the developed world because of decades of laws and red tape.
> And you can absolutely be a wonderful senior without knowing the details of the CPU architecture or definitions of OSI layers or whatever.

For me, that was a giveaway author had read a bunch of stuff but doesn't understand it (so, a "packer" in their own terms). I'd suspect that the article's author is either ignorant or tries to provoke readers.

Software engineers don't have to know about p-n junctions and what the heck an electron hole is - that's an entirely different field of science. In modern age, most people stick and try to become knowledgeable in at most one. Unless they design software for microelectronics design or physical simulations, of course.

And the Protocol Wars are long over, OSI model is dead, even though some folks still believe it's somehow applicable to modern networking. While I'm pretty sure there's a heavily smoke-stained machine still using X.25 somewhere out there, maintaining it and its software is literal necromancy (and while it is a proper subfield, it's a very niche one to require it for seniority).
I have much of what you describe: 3 listening environments between near field computer speaker setup, reasonably high end home stereo and dac/amp with high end iems.

I have tried multiple times to discern flac vs 320 mp3 across genres. Every time I believe I can figure it out and I consistently fail to exceed 50% (pure chance) accuracy.

Makes me wonder what ultra-linear source gear or speakers would highlight the differences in real-world situations, if at all. But for my purposes I’ll happily accept the roughly 80% file size reduction for no audible difference.
A fair while back I was actually reading about a proposed system for literally CGI/virtual horse racing specifically for gambling purposes, backed by gambling industry money.

Unsure if it ever went anywhere, I kind of mentally filed it as “insane gambling nonsense”.
oh no here come the audiophiles runs away
Plant based hyper-processed is all the hype now, which is sort of the same. Feeding, not nourishment.
Replatforming to chase the hype cycle and sell to non-technical CTOs can be an effective money-making strategy.
> It’s good science explore all avenues, not shutdown a discussion until conclusive evidence and lack of rebuttal shows otherwise.

I couldn't agree more. I don't think anyone should claim to be certain about any of our understanding of the universe. I just say that it isn't very useful to think that way, we make more progress if we have the courage to trust in a theory and dare to be proven wrong, than to go back to the drawing board when we get stuck.
Yep. And if we're talking dolphins specifically... They would if they could, we all know it. ;)
On a related note, Instagram has implemented the /imagine command into DMs now too. Straight copy
I still think that for many cases, small to medium enterprises should consider migrations with downtime. If it’s B2B it’s relatively normal to have maintenance periods.
Accommodating disabilities is cost center and and failing to do so is a liability. Businesses use loopholes to “opt out” so they don’t have to deal with those things.
Very informative! How do you use Google Maps for finding tech companies? What keywords do you use?
decent nitpicking

see also: https://acoup.blog/tag/lord-of-the-rings/
have you given QuestDB a try? it includes its implementation of the InfluxDB Line Protocol, adds SQL for queries and can sustain a higher ingestion rate, without high cardinality limitations
note: ipv6 is 128 bits, which should, in fact, be enough for everybody
I don’t think many airports outside the US are the size and scale of our airports. China maybe
Does it work with lower temps? I’ve always found it odd that human body temp is close to 100F but getting into 90 degree water feels hot. I wonder if it’s the evaporative effect like you said and if it reverses when it’s hot enough. Like if it’s 110 and I get in a 90 degree tub, does it feel good? That’s below the temperature my body naturally wants to be at, why doesn’t it feel “cool”?
There was a video a few years ago in which a professional cyclist is connected to a generator (bike included) and their continuous power output was around 100 W which they could maintain for a few hours. But it would be unreasonable to expect this amount of exertion from an untrained person.

Edit: weeeelll. I'm either thinking of a different one or completely messed up the numbers and duration: https://youtu.be/S4O5voOCqAQ
Alternatively, your eye doctor is exactly the wrong person to ask, because they have an availability bias.
Automobile dependency is not a technological problem, it is a social problem. Enormous sums of money were spent on lobbying, laws, and infrastructure, all just to make driving tolerable. The cost of this social experiment was that walking was made miserable and dangerous.

A century ago people were saying, "in the real world, you can't just get people to not walk". But they did. We coined the term "jaywalking" to refer to walking down a street like a normal person, manufactured consensus against it, and criminalized anything other than crossing streets at 90 degree angles to get from sidewalk to sidewalk. All so that people in cars could drive faster, which prior to this would have been considered, rightfully, reckless.

All the technological problems caused by cars are downstream of the social engineering done to force people into buying them. If people did not have to drive everywhere, then we wouldn't need to worry about tire dust, fuel efficiency, emissions, and all the other things downstream of forcing people to drive heavy metal boxes everywhere.

If we decided to end this social experiment, we could. Slowly, and in degrees, of course. But generally speaking there's a lot of people who would like to not drive, but have to, and would be willing to deal with the infrastructure changes necessary to make that happen.
If you are open, would love to hear more about some of the challenges you had with Timescale, esp. with your workload.

mike (at) timescale or DM on twitter?
> But don't essentially all neutron stars spin?

Almost certainly, though they do slow down over time. The distinction is indeed observer-specific, which doesn't matter yet, but will eventually matter for things like the "galactic positioning system" that sometimes gets suggested as a galaxy-wide extension of the current research on pulsar-based_navigation: https://en.wikipedia.org/wiki/Pulsar-based_navigation
cf https://news.ycombinator.com/item?id=37726361
We are influxdb enterprise customers and looking to do the same thing. They've kept their enterprise offering on 1.x, which has kept us mostly happy, but seeing what's going on in their OSS stuff is horrifying and we're looking to avoid the crash and burn at the end of the tunnel.
"Rubber Made From Dandelions is Making Tires More Sustainable – Truly a Wondrous Plant" (2021) https://www.goodnewsnetwork.org/dandelions-produce-more-sust... :

[I'll leave in the hashtags from when I wrote this up to remind myself at the time:]

#DandelionRubber Tires; #Taraxagum

> Aiding the bees and our environment

> Now, Continental Tires is producing #dandelion rubber tires called #Taraxagum (which is the genus name of the species). The bicycle version of their tires even won the German #Sustainability Award 2021 for sustainable design.,

> “The fact that we came out on top among 54 finalists shows that our Urban Taraxagum bicycle tire is a unique product that contributes to the development of a new, alternative and sustainable supply of raw materials,” stated Dr. Carla Recker, head of development for the Taraxagum project.

> The report from DW added that the performance of dandelion tires was better in some cases than natural rubber—which is typically blended with synthetic rubber.

> Capable of growing, as we all know, practically anywhere, dandelion needs very little accommodation in a country or business’s agriculture profile. The #Taraxagum research team at Continental hypothesizes they could even be grown in the polluted land on or around old industrial parks.

> Furthermore, the only additive needed during the rubber extraction process is hot #water, unlike Hevea which requires the use of organic solvents that pose a pollution risk if they’re not disposed of properly.

> Representing a critical early-season food supply for dwindling #bees and a valuable source of super-nutritious food for humans, dandelions can also be turned into coffee, give any child a good time blowing apart their seeds—and, now, as a new source for rubber in the world; truly a wondrous plant.

Taraxacum: https://en.wikipedia.org/wiki/Taraxacum
‘Search and destroy.’
Independent of us, something may or may not exist, but until it can be interacted with, it is not real. It remains hypothetical. You can't do anything with it, only the idea of it is real.

(Edits to make my argument a bit less snarky.)
Most people, presumably, aren’t as bloodthirsty as you; strikes, no matter how inconvenient, rarely result in mass murder of the strikers by the general public. Sometimes by the state, in totalitarian systems, but not by random people.
> Some members of this famous group were from lower castes, and obviously, they were not allowed to physically touch the pickle.

Obviously...

I really enjoyed your post, but that part is just so shitty (not commenting on you, just the dynamic that exists).
Would this be a tiny internal combustion engine?
Ask HN: AI Projects and Research Ideas for Students Focused on Social Good
I am an academic and a researcher, with an expertise in text mining and NLP and with a keen interest in guiding my students to explore the applications of AI aimed at social good. We have a decent number of GPUs hosted at the university, which students access to train models for various tasks. Most of the time, these models go nowhere or at best a research article in some conference. Instead, why not use this opportunity to help society. Having said that, there are some constraints.

1. It should be feasible for undergrad and grad level students with sufficient knowledge in ML to finish within 6 months.
2. Data should be licensed for free academic research.
3. No budget for any additional hardware other GPUs (Tesla V100-PCIE-32GB) to train the models.
4. The application should be ethically fair, transparent, and beneficial to all.

If the HN community has insights, ideas, or can direct us to resources or organizations in this domain, it would be immensely appreciated.
And how much of that financial center wealth ends up working for the average Brit?