skysight-inc/HackerNews huggingface dataset:
I think intensity here is a proxy for metabolic equivalent task (MET). In a lot of literature surrounding recommendations for aerobic activity, it’s generally acknowledged that you need to be around about 3 MET before the cardio activity counts towards cardio health. 2.5 mph walking on flat ground is a benchmark for 3 MET. (This agrees with the findings of this study in that the low-MET slow walking wasn’t correlated as positively with health.)

To extend to your point about more intense slower walking, that would still be a higher MET value than slow walking on flat pavement.
On Twitter’s Layoff Day, Elon Musk Makes the Case for Subscription Fee
You got engaged to your stalker and it didn't work out and it surprised her and what is the moral of this story?
Will they? I don't think they reorder live objects relative to each other, so any object allocated between two nodes would still end up between those nodes after the GC ran.
I guess saving the government billions of dollars in money that would have otherwise gone toward corporate graft and protectionism isn't a "benefit to society". Not to mention the extensive tax revenue that follows from the operation of his companies.
are there any non-crypto examples?
Thanks, didn’t mean to offend, just thought the article could explain it better then I could .

> The problem is that some people don't think well of some specific groups of people and whatever term is being used to refer to the specific group of people quickly becomes a Bad Word.

If a group of individuals actively find a word offensive and ask others not to use it, I think it’s generally kind to respect their request.

Word associations may change over time, and it’s great you have that insight. I don’t have a solution, other than recognizing the words we say invoke feelings in others. We live in the now.

Finding someone whom feels targeted by the word and is open to a conversation can help you understand why the word is harmful.
If we’re thinking about the same situation, it was whether the President can block people, thus excluding them from civic discourse.

They can mute people but not block them.
Hmm, you have a way to pull email addresses out of that picture?
I believe the point is that, yes what biden did here is bad, but what trump did regularly was significantly worse (especially calling into question the 2020 election)
I thought calories were measured using a calorimeter which burns the food. I'm pretty sure nutritionists don't have armies of volunteers who eat nothing but a single ingredient for 24-hours, whose poop is then burned in a calorimeter to measure the difference?

How much increased absorption are we talking about? If I don't drink a can of Coke containing 150 calories of pure sugar, and instead drink a Diet Coke with basically 0 calories, are you saying that my gut is going to somehow grab 150 calories that it would have otherwise ignored?
When you layoff 75%, that is a change of policy. Lots of people are needed to operate the system as it was.
Ok, but the hardware data prefetch functionality seems basically unchanged:

"Characteristics of the hardware prefetcher are:
• It requires some regularity in the data access patterns.
— If a data access pattern has constant stride, hardware prefetching is effective if the access stride
is less than half of the trigger distance of hardware prefetcher.
— If the access stride is not constant, the automatic hardware prefetcher can mask memory latency if the strides of two successive cache misses are less than the trigger threshold distance (small- stride memory traffic).
— The automatic hardware prefetcher is most effective if the strides of two successive cache misses remain less than the trigger threshold distance and close to 64 bytes."
> It's an ITALIAN serial conman...

Wow. I have been guilty of this very same blunder many times and I understand it's just a joke, but please realize that it is not pleasant to be on the wrong side of a joke for no reason.

I'll be more careful with my generalizations in the future. I am confident you will be, too.

Thanks.
As hinted previously, IRL she would have beenn tipped off when he doffed his fedora to m'lady.
To be fair this is how a lot of industrial engineering works too. Ol joe retired and now we don’t know what’s that special modification we need to make to smooth the flight of planes, cause Joe just knew. This is a lot of military and airplane production.
> I'm trying to think of a case where you'd want a custom implementation of ne... I'm not sure I can come up with one

One old example from school was comparing unordered sets of numbers, each backed by a flat array. Summing such an array, contiguous in memory, was very fast: faster than many individual numeric comparisons. So "not equals" checked for equal sums before dropping back to iteration. Of course, that only made sense in situations where more things weren't equal (and didn't share sums) than not, but it helped someone win some performance/vanity extra credit. And I didn't know about vectorized code at the time, so that might make it a wash.

A similar example might be with probablistic checksums of large data. If a checksum answers "maybe the same or definitely not the same" a la a HyperLogLog, comparing checksums is a quick way out for "not equals". Of course, that'd require some uniquely small/untrustworthy checksums, or some uniquely paranoid comparison programmers! That applies similarly to "equals", though.

About the only even vaguely realistic example I can think of is for non-complementary notions of equality and inequality, i.e. an application context in which case it makes sense to have rules like "two MyLists are equal if they contain the same elements, but are not equal if they contain different elements or have different orders". And I call that "realistic" because I've seen code do things like that .... not because it's anything but a terrible idea.
Perhaps QuiteRSS.
I believe they're counting inflation itself as a derivative
This is such a good point. Many of us may be able to afford a couple hundred dollars for a textbook but people in poorer countries don't. Without services like Libgen and Z-lib, we are effectively restricting access to information and only making it available to an affluent class who can afford it. In my opinion, the information should flow freely... Aaron Schwartz pretty much gave his life for this principle.
The bulk of UK government revenues are dispersed to the sick and poor, and to educate children. Iron fisted despots.

https://yougov.co.uk/topics/politics/articles-reports/2014/1...
They have something like 25k terminals in use. They’ve been acquired from various sources. It’s highly likely a temporary billing or technical issue yet the article makes it sound like it’s being done deliberately. Maybe it is? But Occam’s Razor.

Also, this has proven to likely be the most important piece of tech on the battle field. The US government could march into SpaceX HQ in a moment and turn it back on if needed.
I (Canadian) had to call our mortgage advisor about something unrelated to the rate hikes, but they said people are losing it because their 30 year mortgage now has a 40+ amortization period due to the payments on the mortgage staying the same but the rates going way up. If rates don’t stabilize it is going to be a bloodbath once peoples 5 year terms are up. You can easily see your monthly payments double.
اللامركزية مستقبل "الشبكات الاجتماعية"
Congestion should be managed by throttling heavy users only at the point of congestion, during congested times. Applying a per-month cap is ridiculously coarse and is more about punishing users than discouraging behavior that the network cannot reasonably support.
Even within what’s said I’d be curious for the exact quote. NYT doesn’t exist in a vacuum, if the exact quote had been “plenty of other outlets have fawning coverage, let’s focus our efforts on casting a critical eye on the industry” that… doesn’t really seem scandalous at all to me?
Tell HN: Musk's Twitter Plan is Proceeding as Stated
Back in April, Mr. Musk plainly stated his idea to restructure and then flip Twitter back to the public:

> Elon: It is better, in my opinion, to take Twitter private, restructure and return to the public markets once that is done. That was also Jack's view when I talked to him.

https://danluu.com/elon-twitter-texts/#41

--

It's also worth perusing this exchange with the delightful kitten know as Jason C.; So far things seem to be going "according to plan":

https://danluu.com/elon-twitter-texts/#47

> Jason: 5 Teams: 5 Northstar metrics 1. Legacy Opps: uptime, speed 2. Membership team: remove bots while getting users to pay far "Real Name Memberships" $5 a month $SO a year. Includes 24 hours response to customer service 3. Payments: % of users that have connected a bank account/made a deposit 4. Creator Team: get creators to publish to twitter first (musicians, You Tubers, tiktokers, etc) by giving them the best % split in the industry (and promotion) 5. Transparency Team: make the Algorithm & Moderation understandable and fair

> Jason: I think those are the 5 critical pieces ... everyone agrees to "year one" sprint, including coming back to offices within the first 60 days (unless given special dispensation for extraordinary contribution)

> Jason: Hard Reboot the organization

> Jason: Feels like no one is setting priorities ruthlessly .. 12,000 working on whatever they want?!? No projects being cancelled?!

> Jason: Move HQ to Austin, rent gigafactory excess space

> Elon: Want to be a strategic advisor if this works out?

> Jason: Board member, advisor, whatever ... you have my sword

> Elon: ["loved" above]

> Jason: If 2, 3 or 4 unlock they are each 250b+ markets

> Jason: Payments is $250-500b, YouTube/creators is $250b+

> Jason: Membership no one has tried really .... So hard to estimate. 1-5m paid members maybe @ Jason $50-100 a year? 250k corporate memberships @ 10k a year?

> Elon: You are a mind reader

Classic old-school PE (Private Equity) strategy. No 5d chess.
How does giving the vote aggregators a piece of paper assure to you that the outcome reflects that paper?
I have to wonder if it should be considered a legal conflict of interest for a CEO to sit on the board at all, forget being chairman.

The powerful really love rigging stuff in their favor huh
Ask HN: What would happen if a court orders to take down a smart contract
Ask HN: what would happen if a court orders to take down a smart contract ? e.g. on Ethereum.
I don't buy this.

https://www.youtube.com/watch?v=WDIkqP4JbkE

Prefetching in CPUs predates this talk.

https://www.youtube.com/watch?v=Nz9SiF0QVKY

That talk is 2018.

Cache prefetching works best for linear accesses like with a vector, not for random pointer lookups. Prefetchers are also going to have an extra harder time with double indirection since they're unable to see which value is going to be fed to the lea.

Prefetching is also expensive in and of itself, the CPU doesn't do it unless you're already incurring cache hits. This makes cache misses even worse. There are also multiple prefetchers in the CPU and the L1 prefetcher is very basic and is only going to help with contiguous accesses. Your allocator might be doing some nice things for you that let the one of the L2 prefetchers help, I would expect that you'll see better L2 performance due to prefetching.

If you have an example of a linked list being as fast as a vector for iteration, please do show it.
Hundreds of billions.

I could believe, maybe, 'millions'. A hundred thousand dollars buys you a lot of ads on twitter.
Words mean what people who use them intend them to mean.
How does this kind of transaction take place? I've bought plenty of things on Amazon that I've left 5 star reviews for, including electronics, but haven't once been approached with refunds or incentives.
It is worse than that because the "market cap" in the context of crypto scams is meaningless.

Spot price times the number of tokens means nothing if the tokens have no intrinsic value.

Apple may be overvalued, but they have enormous assets and revenue backing their price. Their P/E ratio is a rational number.

Crypto could fall to zero at any time and all the hodlers are left holding nothing but the bag.

And of course a lot of the tokens are just locked away, keys are lost, etc.
I know a lot of people agree, but the most effective organization I ever worked in had managers who _only_ knew how to order furniture, arrange travel, and sign expense reports. The less effective orgs have all had managers who at some level or another believed they were involved and knowledgable about the work.

The person who can estimate effort and risk, and sort the truth from the B.S., is your tech lead. The person who can do the seating chart, and relay the work products of the tech lead up the chain, is the manager.
I was expecting this to be about the various Mastodon groups that have all instance-banned each other, so you can't communicate with everyone in the fediverse without making multiple accounts. (IIRC there are at least 3: the American alt-right, the American left/progressives/etc, and the Japanese instances where people draw pictures that are illegal to possess in most other countries.)
You lost me somewhere between "regexp" and "pretty safe."
Limit video to 720P and everything will be fine.
You should also spend a week getting into homeopathy and a week writing horoscopes.
I blame an over reliance on Big O as an arbiter of what is a fast algorithm. Linked lists are commonly taught as having much better insertion speed than arrays.

This ignores constant factors and cache coherency, of course. More, it also ignores that most lists that folks will make have a VERY predictable access pattern. Typically just a one way scan, if any traversal at all. With very few inserts, and mostly just appending.
Oh, thanks for that tip! I was a 6502/Z80 and occasional Forth guy back in my youth so this feels both nostalgic and futuristic.
In other words, have something to offer that is worth more to others than it is to you,so people want to be around you but don't drag you down.
(This is looking-gglass similar but very diffrent from desperately simping, which costs you more than it benefits them).
AFAIK there's nowhere on Comcast's site that says unlimited bandwidth. I just went to sign up and they were pretty clear about data caps.
A lot of this is pure preference, and if we try to debate the merits of prefix vs infix operators we're just going to yell MY PREFERENCES ARE RIGHT AND YOURS AREN'T at each other until we get bored.

But there are some places where I think Lisp syntax is objectively worse than the alternatives. Parsing Lisp is easy because it shifts all the hard parts to the semantic layer. Everything looks so similar that you have to do a lot more reading, and memorization, to know what's going on at all.

----

To take a supposedly good example from elsewhere in this thread[0]:

> (do-a-thing b (+ a 5))

Is this a function call, or a thing that expands into something totally different? It matters, because (+ a 5) may not be something so trivial - it may have side effects, or be evalulated multiple times. (If it was a lazily evaluated pure function, there would arguably be no point to having macros at all.)

This one is trivially solvable by making macros visually distinct in some way, e.g. Rust's ! suffix, or C's convention of MACROS_YELLING_AT_YOU. It doesn't matter what the syntax is, as long as it exists.

----

Is (progn a b c) a function call or a special form? What about (proxy a b c) or (pregen a b c), both totally plausible names for functions? It's totally possible, even easy, to tell those things apart if you're paying attention, but you have to actually read the word at the start and comprehend it. In languages with dedicated syntax for this, you can just recognize { and } and instantly know what's going on, no need to involve the word-recognition parts of your brain at all. This sounds trivial - nearly all syntax decisions are - but it adds up when everything in the language is like this.

----

[0] https://news.ycombinator.com/item?id=33469932; I've renamed the macro here to make my point clearer, because the obvious response would be "well obviously someMacro is a macro", but in the real world people do not name their macros that.
Discussed here: https://news.ycombinator.com/item?id=33470079
Apple and Netflix do not engineer their tooling in house. Googe and Fb do to a large extent and Amazon is somewhere inbetween. So no, not exactly the same
Can anyone find a NYT article that is pro-tech?
Two Podcast Interviews: Arjun Khemani, Alex LaBossiere
> I think there’s a massive difference between correcting something that is untrue, and just deciding you want to have your own say because the truth isn’t representative of what you feel is the broader issue.

Well stated. I think the job of the platform should be limited to calling out actual falsehoods, which this is not.

Additionally, a great platform could surface this kind of additional context effectively, but only as provided by the users of the platform. That's something I would love to see.
Writing a Symbolizer for the Cinder JIT
I've been a Starlink user since March 2021 and this is a huge disappointment. My service quality took a nosedive in January 2022, it's clear they greatly oversold capacity and are congested. But all along they've been promising these great speeds and no caps. Now they aren't even going to pretend they might deliver that level of service. Still going to charge me the same though.
I think if you tried to do that, you'd basically be mixing type-driven optimizations with the C FFI, which sounds sketchy, to me at least. The null-optimization for Option is just that, an optimization, and I don't like taking it for granted where safety/security is at stake.
Inflation is the first derivative. The rate of increase of inflation is the 2nd derivative. The idea that the rate of increase of deflation is itself decreasing would then be the 3rd derivative (think "the rate of the rate of increase of inflation is negative")
web3 is multiversX https://multiversx.com/
I've often received little cards in my orders asking for a screenshot of a 5-star review in exchange for a 90% off coupon for my next purchase, or something like that.
Malinformation is info that’s true but presented in a disingenuous way. Misinformation is false info that’s stemming from a person who truly believes what they’re saying. Disinformation is false info spread purposefully.
The main problem with this idea is battery life. Mobile devices are designed to go to sleep really often to conserve battery, and you can't do that if you're running a server. iOS in particular heavily restricts when and how apps can do stuff while the screen is locked.
>They are quite pointed and amusing and he does not discriminate in throwing any of the counter parties in this story under the bus

You are right, there even are comics poking fun at the moderatorial slant of the site! Oh wait no, there isn't any.
partially, it is happening worldwide though
How do fake reviews on something like Amazon work? Wouldn't they only allow you to leave a review if you have purchased the item?

I get that for a cheap product a seller could have a bunch of dummies buy it and then leave reviews, but that... doesn't seem very viable for most things.

Or are normal people getting paid to leave high reviews for something they bought and would not normally review?
Nerdy is not what makes someone unattractive. In the Blockchain space especially, nerdy is not the part that turns people off.
Its the outcome of gutting the educational system, poor methods of teaching (instead of teaching critical thinking they teach how to take the test), and just the fact that in a country of ~332 Million the bottom 20% could be like 67 million people(the bottom 20% is not a direct correlation but still you get the point).
My UP playthrough completed in about 28 hours :)
What I'm curious of is how reliably people can identify fake reviews. Is it that ~30% of customers suck at distinguishing them, or is it fuzzier than that and there's an overall 30% chance the review you think is trustworthy actually isn't?

I've bought a lot of stuff on Amazon, and while I do think there's tons of fake reviews and craptacular products for sale, I've yet to come away with the same opinion of Amazon that many people have here. That is, the idea that Amazon is basically an unnavigable swamp of a marketplace. Somehow, I've avoided bad products to such an extent that I can't name a bad purchase off the top of my head. Ok, there was _one_ time I got an air filter that was used and repackaged (eww!) but it wasn't obvious and Amazon didn't know about it, and that's different than flimsy Chinese goods with fake 5 star reviews. I feel like I can spot fake reviews and other nonsense from a mile away, but I don't know if that feeling is real or not.
Romania signs $385M deal to acquire 32 surplus Norwegian F-16 fighters
Twitter is a very successful product, but by most accounts a highly dysfunctional company. They have one hit product, the core microblogging service. It has evolved admirably. But new products and features introduced by Twitter have had chequered success, to be charitable. Promising acquisitions in growth areas (Periscope, Vine) have withered and died under their stewardship.

The value of their core product is not primarily technical but social and cultural, as has been pointed out ad infinitum (the “twitter clone” microblogging weekend project in new language/framework is a cliche). Musk does have the ability to quickly burn that cultural capital. But it’s too early to tell to what extent it will happen, and in what ways it will hurt the service.

Even the most outraged user claims are unreliable. Too many users get too much value out of the professional, cultural and social networks they’ve formed using Twitter. I’ve already read one gloomy, regretful account of migrating to mastodon. There’s a high probability that many of these users, who are loud but unquestionably in the minority, will eventually return after self imposed exile.

Whether the product itself will implode or degrade for technical reasons, very few are in a position to accurately predict.

Comparing Twitter to Atari seems unfair to Atari, a company that had success in several markets and that successfully innovated for a sustained period of time.

I think an instructive comparison may be Musk’s acquisition of The Onion staff, which (according to my memory of the incident) he did primarily out of spite. His attempt to launch a rival humor website with those writers flopped disastrously, and was quickly forgotten. It’s support for the argument that Musk will approach a cultural product with an engineering mindset. But it remains to be seen what, if anything, he learned from that experience.
It was a real culture shock to go from a smaller company to Google, and this article illustrates why very well. Almost every other bay area tech company does local development on Mac laptops, uses something like Slack extensively, and outsources tooling. Despite its constant hiring Google is so insular that there are many long time Googlers who are not only unused to these things, but completely unaware that they're the norm outside Google.
It sucks that web3 marketing has hijacked the concept of decentralisation.

Suddenly privately hosted data, federation, WoT, or P2P don't count as decentralised if there isn't any blockchain involved with a token to sell.

They've rebranded private keys as "wallets" and act as if cryptography couldn't be done without transferring some Monopoly money at the same time.
Yeah. I mean if people cancel 20% of the time then you could pay the coaches either way and then charge 20% more for the service. At least that is what I am thinking. Maybe it wouldn’t bother the coaches as much if they’re going to get paid either way. Maybe with limits to how often this can occur without a penalty.