skysight-inc/HackerNews huggingface dataset:
Eyes can definitely tell more than 60hz, especially the rods in your peripheral vision. From what I remember in cog sci classes it was about 72hz that was just noticeable difference (JND), but I think this may be a bit higher in rods, and have small difference by gender. One way to tell is look at a CRT off-angle and adjust refresh rates until its no longer perceptible.

Angle of eyes may be different and I'm more skeptical of whether we can tell if people really are looking at us off-angle or from considerable distance.

On the one hand, we're certainly hyperaware of faces both in central and peripheral vision, as part of our brain is dedicated to face detection, and eyes have high contrast (black on white). And looking dead-on at someone's eyes we can infer where they're looking even from pretty far away. All of this of course serves a social / evolutionary / survival purpose.

On the other, it may be that peripherally all we can tell that someone's is facing us and has open eyes, and this leads us to have a premonition that someone is looking at us. When we look up to confirm, this may or may not be true, but we'd be more likely to remember/encode that they were, thus making that sense err on the side of assuming people are looking at us. Add to that our own sudden shift in the angle of our face/eyes, which may cause them to react and look our way. We also don't get confirmation of whether people far away are looking at us, or if they're looking at someone next to us. Thus we don't really know if they are.

For me, both of these situations (thinking they are looking at me and finding they aren't, and seeing people look at me in response to my looking their way) happen frequently. I'm not sure our senses are that good at off-angle 'who's staring at me' though; instead I think we're just really well optimized to assume that just in case. Our brain is phenomenal at filling in the blanks visually, and making inferences based on important survival signals like where others are paying attention.
There is an interesting anecdote about how Millikan's oil drop experiment that measured the elementary electric charge was way off when he measured. Feynman talks about it in his book:

"We have learned a lot from experience about how to handle some of the ways we fool ourselves. One example: Millikan measured the charge on an electron by an experiment with falling oil drops, and got an answer which we now know not to be quite right. It's a little bit off because he had the incorrect value for the viscosity of air. It's interesting to look at the history of measurements of the charge of an electron, after Millikan. If you plot them as a function of time, you find that one is a little bit bigger than Millikan's, and the next one's a little bit bigger than that, and the next one's a little bit bigger than that, until finally they settle down to a number which is higher.

Why didn't they discover the new number was higher right away? It's a thing that scientists are ashamed of—this history—because it's apparent that people did things like this: When they got a number that was too high above Millikan's, they thought something must be wrong—and they would look for and find a reason why something might be wrong. When they got a number close to Millikan's value they didn't look so hard. And so they eliminated the numbers that were too far off, and did other things like that."
Would love to see a little more of the math - am hooked on the idea though!
this seems to be highly downvoted as i suppose people are reading it as a rude aside, but I read it as a feature worth highlighting. Microsoft has an excellent track record with language design, promotion, stability, and tooling.
>"Precise definitions vary,[4] but features often cited as characteristic of hard science include producing testable predictions, performing controlled experiments, relying on quantifiable data and mathematical models, a high degree of accuracy and objectivity, higher levels of consensus, faster progression of the field, greater explanatory success, cumulativeness, replicability, and generally applying a purer form of the scientific method."

This describes some of the mathematical economics I've read.
You could look at websites that advertise telescopes. If I remember correctly Celestron also sells microscopes.
Bcachefs status update, current work
Amazon vs. EBay – Finding the Best Price on 3,500 Products
I guess this is for the nontraditional programmers since computer science is a mathematical field and programming is simply applied mathematics in some sense. I don't see how you could get a CS degree without being competent in mathematics to some degree since CS is a mathematical field.
Scrape multiple crypto currency data sets-write to single .csv
Saudi royal family is deeply integrated with US and EU power structures outside of Gadaffi corrupting a bunch of politicians in EU the scale is hard to compare.
I'm sorry if this isn't your intent but the way you structured your comment comes off as very condescending.

Aside from that, I'm also skeptical that the frequency in which these maths apply to practical, commercial programming is really that high.

Im not anti math or something. I just think the practical value gets way over sold by some people. And sometimes it feels like it's because of the dislike of "those who can call themselves programmers by trade."
The term is "combinatorial explosion". Like the ability to train larger, deeper, heavier neural nets, that too gets better with more computing power.
truly full-stack!
Copyright is automatic. Tweets are already copyrighted.
US Navy’s top 5th Fleet commander found dead in his home
To complicate things, in Italian "table" exists both as "tavolo" (male) and "tavola" (female). The female version is more often used for "plank" than "table", except in some specific expressions like "andare a tavola" (let's sit at the table to eat). No idea why.
On the causes of the '80s AI winter [pdf]
Bed a champion a training course on urban design
I'd be shocked if it was higher than 10%, and that's not even the bulk of JS work: the vast majority is brownfield, existing projects, where changing the toolchain is decidedly nontrivial. TS is nice, but it's a long way from ubiquity.
I read the first edition when I was nearly 2 years into my professional career. I understood the basic 'what' and 'how' of software development.

Refactoring helped me start to understand the 'why' and 'when'. Why is design A better than design B? When is it time to tidy up this code? Which choice will be easier to change later? That kind of thing.
Interesting, thanks.

"for complex objects stereo acuity is similar to visual acuity. But for vertical rods it can apparently be as low as 2 arc seconds (1/30th of an arc minute). In other words, 30x as strong as typical visual acuity."

Assuming that the author of the blog post picked 30x as representative of the most extreme cases, and if we take the root commenter's word that 4K is approximately 1x visual acuity, and if 8K is double the width and height of 4K (is that correct?), then that suggests that by the time we reach 128K resolution (32x visual acuity, >8 billion pixels) we'll have finally mastered screen resolution, which, alas, will be of little comfort to laptop users, whose screens will inevitably still be 1920x1080. :P
Something that I find interesting that even the manner of talking - speed, intonation, volume - can be extremely different between languages, and not readily recognizable as the same person talking.
There are about 100 million cattle in the US today. Assuming 75% are fully grown and the remainder weightless, that comes in at 75 million tons of cattle.

I have no trouble visualizing 75 million tons of cattle, so why is it so challenging to visualize 5 million tons of milking spiders? Setting up distributed shipping containers to replace centralized dairies and feedlots seems quite easy to me.

No need to torture yourself on whether I'm being serious or not. I think it's a nice thought exercise and perhaps even a business model.
First chapter is up now at https://pimbook.org/pdf/pim_first_pages.pdf

Also note that the Amazon "Look Inside" lets you see basically any page. Some readers have told me the first chapters were too slow, and so I think more advanced readers will want to breeze through that (though the applications in the first two technical chapters have a coolness to them that is hard to beat!).
On a related note, I'm curious if anyone has taken the Mathematics for Machine Learning (https://www.coursera.org/specializations/mathematics-machine...) courses on Coursera, and whether it really covers enough to be comfortable with ML. The course bills itself as enough math knowledge for folks who barely remember high school math.
Genuinely curious. Does anyone use the command line `tsc` to compile typescript in everyday work? Or is it more of just a learning stepping stone?
What series?
> online services where the content is uploaded with the authorisation of all right holders concerned,

Does the service trust the uploader about this? There will inevitably be disputes about that self declaration.

It's also impossible to know which are all the rightholder of a piece of content. There might always be one more making a claim later on. Any system, automated or manual, is going to have many false positives and negatives.

On the other side, this system is already in place for traditional media. It's dealt with litigation. Again, no need to create special legislation for the internet. The blame must be passed over to the content creator, not to the distributor. This means that the creator must be identifiable, to know who to sue.

However this means that the supposed rightholder is going to automatically sue a zillion of people, with false negatives. This is unfair. I propose that in case of false negatives they lose the right on the content.

An example.

It's May and they play the final of the Champions League (this is about the EU). People will post the highlights. The rightholder will manually identify some hundreds of those videos, sue the uploaders and win. This will teach people not to upload those kind of videos next time. But if they sue a guy because they mistake him playing with friends as the Champions-League final, they'll lose all the rights on it. They'll be very careful about who to sue, people will be careful about what they upload, I won't see highlights anymore on YouTube but I can live with that. It seems fair for everybody.

The part about losing the rights is not going to happen though so I wasted your time, sorry.
Really not sure this is an alternative to blender. Blenders functionality stretches way way further than this. Go check out the blender 2.8. I think you'll be really quite impressed by the improvements that have gone into it.

Blender might be a "nightmare" for you. But without putting any proper criticism, your point is null.
That's not illegal under the EU directive though...
Types help eliminate an entire class of unit tests one would need to write before refactoring. Things like newtype also allow enforcing certain constraints while refactoring. So yes, while the end goal is the same, the process is simplified.
In funny money.
IPv6 inside would be nice.
The units on the graph are misleading you. Notice that both measurements were multiples of 100. They were probably just measuring the load on the prefabulated amulite.
Seconded for this. Going back and taking an actual structured math course at community college after working professionally as a programmer for years was a real eye opening experience for me. So many things that seemed so abstract and meaningless as a 12 year old were instantly apparently useful in an unimaginable number of ways.
Cut my doc into pieces

This code is open souce
To the question of how much resolution is enough, my answer is: can you see the pixels when you approach your eyeball to the screen? If yes, then resolution can be improved. If no, then there is no need for more pixels. On modern big television (e.g. > 45in) then the resolution required to pass this limit is well, well beyond 8K.

You can argue that because you look at the screen from a distance this criteria is irrelevant, but there are all sorts of discussions and argument about perception of clarity and whatnots which makes calculations based on distance hard to defend properly. The only way to be sure is to be unable to perceive pixels even if it's right in front of your eyeball. Like actual things in life.

I'm convinced resolution will improve until this limit is reached, as it should.
True and funny. Looks like you got downvoted into oblivion. Someone being a bit too sensitive about a genocide metaphor I suspect.
I think you're right about court trials, but his is about the considerably different matter of why an election commission has decided to delay approving an election result pending further investigation.
I think it actually goes a bit deeper than using certain brands to identify political leanings. That was step one, but they also rated users' openness, conscientiousness, extraversion, agreeableness, neuroticism, depression, anger and vulnerability.[1] Then they showed targeted messages to people they decided were right leaning and vulnerable to their messaging.

[1] https://www.cnn.com/style/article/christopher-wylie-fashion-...
Why not? A human given enough time and an infinite tape can easily simulate a Turing machine.

The other way is more controversial, but I don't think it's outrageous to speculate that a brain could be accurately simulated by a Turing machine.
Developer circlejerk.
Plain-jane EVGA GTX 1080SC. So chosen because it was the only 1080 I could find at the time that only needed a single additional power header, I was building a mini-ITX based workstation, and space for wires was at a premium. No complaints, though, it's held up like a champ.

(This is the card: https://www.amazon.com/EVGA-GeForce-Support-Graphics-08G-P4-... )
Just ordered from Amazon! I used to read his blog a few years ago and I loved the articles and the breadth of topics. Thank you!
right. perhaps they could make it exclusive
> I simply enjoy zero advertisements.

I'm a Youtube Premium subscriber as well, and this is by far the #1 perk. However, it's technically wrong (you probably already know this) to call Youtube content ad-free just because we aren't seeing Youtube's ads. :) Almost all of the content creators I follow on YT simply advertise or product-place inside their videos.
Flopnax was written at Bell labs so it must be better.
This is false.

Some channels in some markets may be at 720p and some older STBs top out at 1080i, but recent boxes like the XG1, any boxes that are IP, like the Xi series, and all of their apps take top bitrate profiles, so channels like your local affiliates or ESPN are received at least 1080p.
Do the exercises have solutions? The most annoying things about math books is the lack of solutions. A beginner absolutely needs to know whether or not their solutions are correct.

The “the reader should know if they are correct” logic doesn’t apply here. A beginner could easily have faulty logic and fool themselves into thinking their solutions are correct.

I usually don’t buy math books without solutions if I’m self-studying. Would like to know if solutions are provided in this book. If not, I won’t consider buying it.

If this book doesn’t make the cut with a solution manual, does anyone have recommendations on an intro to proofs book with one?
Determine the Starting Time of a Process on Linux
This is mind-bogglingly awesome.
Thanks! Excellent pointers, I had no idea the sequence fragments being aligned were so short in some cases.

I can't see your email either, so I assume the profiles don't publish them. You can reach me at mike at <username>.net however.
Oh, the comments totally tell you what the site is about. Also, is it Turing complete yet?
Intel sues ex-engineer, says he stole company secrets
Horizons science – Cimon
I pay YouTube purely for the lack of ads too, and have never watched any of the Originals content or used any other feature of YouTube other than simply watching videos from channels I sub to (I don't comment, or take part in communities, or any of that stuff). I sub to 200+ channels and YT is my primary replacement for TV, so I'm more than happy to pay for it to be ad-free.

Channels that insert their own ads into video are a step too far though, and I've started unsubscribing from them. Patreon is fine, affiliate links in the description are fine (if they're relevant, eg tools you used, items you showed in the video), and I actively participate in both to support channels I like. But sitting there talking about "random product dot com forward-slash channelnamehere" as though they're the most exciting thing since sliced bread, just cheapens the identity immensely, and is the modern day equivalent of seeing your favourite sports/hollywood star hawking off some random crap on the shopping channel.
When I struggle with a piece of work - I fallback on keeping a count on number of iterations to my approach/attempts. Where first iteration starts with basic premise of problem and gradually work my way up. This process somehow tricks to make progress methodically.
Is that really the case? Most of Amazon's offerings from what I can see are priced at a premium. AWS is much pricier than competitors, and the physical goods they sell (at least here in Europe) are either on par or more expensive than dedicated European online stores, let alone Aliexpress/Banggood/Gearbest/etc. In the UK/Ireland at least, the main attraction from Amazon is convenience - for those items that are available with Amazon Prime, the shipping is much faster than competitors. Beyond those however, I've honestly had better deals and faster shipping with eBay.
The Sherry's Berries reads were hilarious. It sounds like they were annoyed with the first read, but came around to his style as they kept re-up'ing.

https://www.youtube.com/watch?v=PMLn57oS9Yk
I had an idea for an iOS app years back that i spent about 6 months developing. It was technically challenging and technically possible, which made it appealing. I'd dump 2-4 hours after work and more on the weekends into it.

Eventually, i realized that the purpose of the app was far too abstract, and while trying to figure that out i fell down the UI rabbit hole (i devved for iOS professionally at the time, but had never designed my own UI). Spent about 3 months trying out increasingly tiny UI/UX ideas until one day at a bar I was showing it to someone, and i just realized how stupid it all was, and shut it down.

I dont consider the time lost. I was able to chop up the app and open source some of the controls and widgets which helped me get another job. Also talking about the design process with my coworkers afterwards helped me figure out that iOS native is basically full stack dev, which got me to switch into backend and AI.

Overall a very positive experience, and the memory of committing to it helps encourage me to dump time into projects in the future (something I still do regularly).
Depends on your IDE. In practice, tsc is a build step in CI/CD, not a dev tool (if you’re using a good IDE).
In my mind those are two different things.

Youtube Premium pays for the video hosting platform. Content producers advertise to support their content production.
Is it possible GP meant 30% more for a prime-compatible listing compared to a non-prime listing?
Making a state from part of another state requires the consent of both state legislatures and Congress (Article IV, Section 3). Pretty much any border change of a state requires at the approval of both Congress and all affected state legislatures. Note that this leaves executive branches out entirely.

Not sure how it works in Switzerland, though a quick look at Wikipedia suggests plebiscites can be involved. National plebiscites don't really exist in the US.
Jeremy, been reading your blog for years. Just wanted to say thanks for the wealth of readable intros to interesting mathematics.
Or they got lucky in that case, and we only heard of it because of such luck.
It is also not pretty to see all these creators debasing themselves to promote products they have never heard about.

You can often catch some pretty severe cases of dead eyes.

Some websites have also taken to add their own ads on top of the youtube player, which is equally infuriating.
What about a disability, though?
I would have paid for YT Premium if I had some guarantee that I wouldn't be surveilled aggressively even as a paid user.
Wow, and I haven't even jumped up to 4K yet. It seems like technology might be advancing faster than many producers can keep up.

As I understand it, in the anime world most airing shows are still being animated at 720p or at slightly higher resolution, with a handful of them occasionally being animated at 1080p. Although the best studios typically clean things up and make a huge number of improvements for their 1080p BD release. Movies are generally animated at 1080p.

Older cell-drawn anime are being scanned at 4K / 5K to produce new 4K releases, and I'm told the level of detail in those is incredible, which makes sense given that they're hand-drawn with extreme care. Currently the best known release is probably Ghost in the Shell (1995).

Even the incredibly popular movie Your Name was animated at 1080p. The special edition is upscaled 4K with HDR.

The high cost of 4K releases also creates a barrier. A standard 4K Blu-ray movie seems to go for around ~$80. If you want both the English and Japanese versions of Your Name at 4K you're looking to pay around ~$195, admittedly that's for the 5-disk collector's edition. Compare that with a typical ~$20 1080p Blu-ray release.

Being unable to prepare a personal backup is also a problem. Ideally I'd dump the movie right away so the physical medium can be stored in as pristine conditions as possible. It would feel very frustrating to spend that much money, only to have it casually damaged.
Why don't the peer reviewers demand higher standards?
Yes, and with larger samples. Too many small sample experiments which, at most, should be considered a "pilot" study, and when results are positive even with p < 0.01 they should still only be considered "suggestive" until replicated, preferably with larger samples.
There was another post on HN about this yestaerday. Consensus is that it’s most likely not actually Nakamoto.
Do youtubers have to disclose how much each company is paying them ?

I stumbled on a video yesterday about how Tesla was so far ahead of its competition .. and I could not help to wonder how much this youtuber has been paid to say that.
Now having 4k at 4:2:0 is equal to having 4:4:4 1080p. There is hope that having 8k at 4:2:0 will be like a proper 4:4:4 4k ;-)
FREE STUFF
Glad it was useful. Cool looking project by the way! I like the list of 'Current Features' ;) Actually though, concept is neat and the showcase looks promising.
Salaried workers beware: GM cuts are a warning for all
disqualified! That sounds like a success to me.
But this is hardly the opium wars is it - not that the PRC is not adverse to whipping up nationalistic propaganda over it.
Agree. Actually, studying a good solution even if you have one of your own is one of the best ways to learn mathematical tricks of the trade, so to speak - just as it's a great way to learn coding: one learns from the master (as one should) and not just "from the book."
Looking at the courses, it doesn't cover calculus and probability. That's two topics that you should already know and that you might not have mastered in High School. Otherwise, you are good to go.
Show HN: flopkef - virtual flopnax over rilkef for fun and profit