HNHacker News
TopNewBestAskShowJobs

Arcorann

221 karma · joined April 14, 2020

submissionscomments
Arcorann··on Teclis – Non-commercial web search
I was a little surprised to see Fandom.com results come up in one of my test searches, given that they are notorious for being very far from "clean" (I counted 25+ uBO blocked when checking the page in Vivaldi, which is far above the threshold of 5 mentioned on your page). Might be worth looking at in more detail.

Also, Marginalia Search link on front page is broken.

Arcorann··on A 2030 Self-Driving Car Bet
Curiously, back in 2016 there was a bet very similar to this one posted on Long Bets (https://longbets.org/712/) -- the bet required commercial self-driving cars capable of driving through Las Vegas by 2024. The timeframes are even the same (8 years).
Arcorann··on Show HN: Angularis – like Tetris, but based on triangles
This isn't the first polyabolo version of Tetris I've seen, though I think it is the first one with diagonal movement in addition to horizontal. I find it playable enough for my liking. Comments on the game:

* Configurable controls would be nice. Most (modern serious) Tetris players would be more used to Z/X for left/right rotate and Shift or C for hold. (Don't listen to the people who want only one rotate button; two are essential nowadays.)

* Ghost piece would be nice as well (I think someone mentioned it elsewhere). Even grid lines would help.

* Pause doesn't work, at least on desktop.

* Line counter is missing.

* The title mentions a version 0.7. Is there a corresponding changelog?

Arcorann··on Cal 9 1752
The Iranian calendar defines its new year based on the exact moment of the northern equinox; if the equinox is before noon (Iran standard time, I believe) then the new year is on that day, while if it's after noon the new year is on the next day. As a bonus, the month lengths are designed to be longer near aphelion, when the corresponding solar months (periods between 30-degree solar longitudes) are longer.

The Chinese calendar is defined (since 1644) based on the days of true new moons and solar terms (corresponding to 15-degree solar longitudes), which also makes it purely astronomically defined.

The various Indian calendars are mostly defined using traditional astronomical texts, but I think there have been occasional attempts to update them to modern astronomical knowledge.

I'm not sure where the rate 0.003% of a day per year comes from in your comment; even the error in the Gregorian calendar is longer than this (if measured based on the northern equinox, about 12 seconds; if measured based on the mean tropical year, about 27 seconds).

Arcorann··on Defrag Like It's 1993
Reminds me of zFRAG [0], which I found had an update recently to add bad sectors. The game allows you to both defrag automatically and manually (by dragging and dropping).

[0] https://losttraindude.itch.io/zfrag

Arcorann··on RFC 3339 vs. ISO 8601
There are some non-trivial changes between the draft standards and the final ISO 8601:2019-1 standard, one of which relates to making the use of T stricter, and the mentioned provision was removed.

Regardless, ISO 8601 has generally discouraged using spaces within expressions. From ISO 8601:2004, section 3.4.1:

> Unless explicitly allowed by this International Standard the character "space" shall not be used in the representations.

Similarly, from ISO 8601:2019-1, section 3.2.1:

> The character "space" shall not be used in the expressions.

However, through looser interpretation of the standard, "2021-10-24 11:02:03Z" could be allowed if treated as a date representation followed by a space followed by a time representation (note that the formal time representation in ISO 8601:2019-1 is T11:02:03Z, but it allows omission of T for extended format as per 5.3.5).

Arcorann··on ROT8000
I remember seeing this the last time it was posted on HN [0] in 2018. The About page seems to be a bit outdated since it actually skips a lot more characters than the 32 mentioned.

Running this on CJK text is an interesting exercise.

[0] https://news.ycombinator.com/item?id=18495518

Arcorann··on Simple test reveals if your mental images are more vivid than other people's
The article is reposted from https://theconversation.com/pseudo-hallucinations-why-some-p...; requesting the link and title be adjusted. (I'm not sure if the link should be repointed to the original research study or not.)

I'm not able to look at the Ganzflicker at the moment but I did skim the research study in question (given that the focus on the article is on the conjectured mechanisms and not the results themselves) and the results found there are somewhat intriguing.

Arcorann··on The Irreplaceable Art of Translation
I was reading an article talking about book translation and translation styles a couple of days ago but I can't seem to find it again. In the meantime, have a link to some quotes on localization and translation: https://legendsoflocalization.com/literary-translators-comme...
Arcorann··on GitHub reinstated youtube-dl but restoring forks is apparently a problem
youtube-dlc has been inactive since December 2020. I use yt-dlp instead: https://github.com/yt-dlp/yt-dlp

Not only does it keep reasonable pace with original youtube-dl, it also incorporates several improvements from forks (detailed on the page).

Arcorann··on Why 11 days disappeared in 1752
Something I never see being talked about in these sorts of threads is how Japan switched from the local lunisolar calendar to the Gregorian calendar. In the year 1872 (Meiji 5) the imperial government were paying their officials on a monthly basis, but their finances were in trouble, and the 6th month of the following year (Meiji 6) was a leap month which meant that they would have to budget an extra month's worth of pay for that year. Adopting the Gregorian calendar turned out to be a way out of this problem. As a "bonus", if they adopted it starting 1873 then the 12th month of the current year would only last two days and they could get away with skipping that month's pay completely.

The calendar reform was officially announced on the 9th day of the 11th month of Meiji 5, or 9 December 1872, to take effect 1 January 1873. This understandably caught people off guard, especially since official calendar makers had already started selling calendars for the new year a month earlier.

Arcorann··on This Anime Does Not Exist
As pointed out in the comments to the Know Your Meme article, this was originally generated by a GAN and posted on Instagram by @busyrotting, who isn't credited in the article at all.

Unfortunately their profile [1] is gone, and the Internet Archive doesn't seem to have saved the post [2] either. Nevertheless, we've looped back to neural networks again.

[1] https://www.instagram.com/busyrotting/

[2] https://www.instagram.com/p/Bu2IkGylneb/

Arcorann··on How Ray Kurzweil’s 1998 predictions about 2019 are faring
Not really. Vocaloids are driven by human-written notes; one could argue that converting the notes into singing may involve "machine intelligence" (depending on how much processing is applied to the voice sample bank), but ultimately the software is essentially being used as an instrument.

Similarly a Virtual YouTuber is just an animated model driven by motion-capture software, with the motions and voice provided by a human. I doubt this is what Kurzweil had in mind.

Arcorann··on How the Slowest Computer Programs Illuminate Math’s Fundamental Limits
n (n Knuth up arrows) n (n Knuth up arrows) n = n (n+1 Knuth up arrows) 3, so that's not really impressive either. Your function is comparable in size to f_omega(n) on the fast-growing hierarchy. [1]

At any rate, it's known that BB(18) is larger than Graham's number [2]. In fact, the same person has a bunch of long-lasting Turing machines for values around 18 [3], giving the lower bounds:

BB(15) > f_omega(2046) > 2046 (2046 up arrows) 2046

BB(16) > f_omega(f_omega(5))

BB(17) > f_(omega+1)(10) BB(18) > f_(omega+1)(7e57) > Graham's number

BB(19) > f_(omega+1)^3(9) > f_(omega+2)(3)

BB(20) > f_(omega+1)^4(7e57) > f_(omega+2)(4)

BB(21) > f_(omega+2)(f_(omega+1)^2(4))

BB(22) > f_(omega+2)^3(f_(omega+1)^2(4))

And for larger values again [2]:

BB(38) > f_(omega2)(167)

BB(64) > f_(omega^2)(4098)

BB(85) > f_(epsilon_0)(1907)

Of course, we expect the Busy Beaver function to grow a lot faster than these bounds.

[1] https://en.wikipedia.org/wiki/Fast-growing_hierarchy [2] https://googology.wikia.org/wiki/Busy_beaver_function#Graham... [3] https://googology.wikia.org/wiki/User_blog:Wythagoras/The_ni...!

Arcorann··on Unicode (1889)
Looking at the "similar items" list gives us quite a number of competing schemes for coding words. The "Anglo-American telegraphic code" in particular seems to have gone all out -- it's 500 pages long, four times the length of "Unicode", with over 27000 code words.
Arcorann··on Unicode (1889)
The book has a list of users starting on page 118, so evidently the code had some success. Whether everything in the book is used is another matter entirely, but the extra coverage doesn't hurt.
Arcorann··on Manifesto of the Silent Minority
I remember reading a few years back an article about the most commonly shared views among voters (as in 90%+ agree rates), finishing with a political manifesto designed to incorporate as many of said views as possible (unfortunately I don't quite remember exactly where that article was from, or I would link it). This, being the opposite of that article, is certainly more thought-provoking for obvious reasons, and I note that while there are likely people who agree with every statement in the other manifesto, there is almost certainly no-one who agrees with every statement in this one.
Arcorann··on Using Pokémon to detect scientific misinformation
There are over ten citations there to real articles about predatory journals, all linked in the paper. Even this:

> 28. Stromberg J (2014) ‘Get Me Off Your Fucking Mailing List’ is an Actual Science Paper Accepted by a Journal. Vox 21: 10-11.

(See also HN discussions on the abovementioned paper: https://news.ycombinator.com/item?id=22052019, https://news.ycombinator.com/item?id=11098655)

Arcorann··on 7k MS-DOS Games playable in the browser
Standalone emulators are continuing to make progress for each of these platforms, but there's still quite some way to go. Once we get those to a level where most games are playable without issues at full speed porting them to the browser would theoretically be possible (no idea about the speed hits though), though I don't expect that to happen for several more years.

As for the Internet Archive itself, they recently set up their Internet Arcade: Turbo Edition [1], a collection of arcade games from the 90s and early 00s that cover the most demanding emulated games playable in the browser on the site (apart from Dottori-kun, of course).

[1] https://archive.org/details/internetarcadeturbo

Arcorann··on A Spectre Is Haunting Unicode (2018)
I disagree with your characterisation as "horseshit" -- although eleven of the characters were subsequently located in other texts, these texts are different from the sources that were supposedly cited when they were input into JIS C 6226 in 1978 [1]. Of the twelve characters cited as "ghost characters", nine of them had claimed sources, but on further investigation were not in the claimed sources or were data entry errors of similar characters in those sources, while three did not have any claimed sources, of which two were later found in other texts (and one of those is believed to be an error), and 彁 has never been located in any text predating its input into JIS C 6226.

[1] https://ja.wikipedia.org/wiki/%E5%B9%BD%E9%9C%8A%E6%96%87%E5...

Arcorann··on Falsehoods programmers believe about addresses (2013)
Plus Codes (or Open Location Codes) are simply mappings from latitude/longitude to an alphanumeric string [1], and there are open-source implementations in many languages [2], which means the effect of the project being abandoned would be limited.

[1] https://github.com/google/open-location-code/blob/master/doc...

[2] https://github.com/google/open-location-code

Arcorann··on Keep the nuclear launch codes in an innocent volunteer's chest-cavity (2015)
"As the Last I May Know" [1], winner of this year's Hugo Award for Best Short Story, is based on this proposal. It's certainly a thought-provoking one.

[1]: https://www.tor.com/2019/10/23/as-the-last-i-may-know-s-l-hu...

Arcorann··on Building a computer in Conway's game of life
That question is still open for submissions, and this computer looks to be significantly smaller than the one submitted there. If someone were willing to expand the computer a bit (memory currently seems a bit small) and then port Tetris to it then I suspect they'd be able to beat the QFT processor.
Arcorann··on 1M Cell Minesweeper
According to the landing page "If every cell on the game field was as small as a speck of dust it would take 17 billion years at the speed of light to travel the width of the board." 17 billion light years is 1.608×10^26 metres, while the size of dust specks varies but is roughly around 10^-6 metres. That's a big field.
Arcorann··on A tool that increased my typing speed
I thought this was familiar. Turns out it was posted here before but the article was on a different site.

Here's the previous discussion (40 comments): https://news.ycombinator.com/item?id=24702678

Arcorann··on EU considers phasing out 1 and 2 cent coins
The 1/8 dollar was a feature of the old Spanish dollar (hence the term "pieces of eight", the eight pieces being known as "bits" -- "two bits" is then a quarter), which is where the Americans got it in the first place. In fact, up to 2001 American stock exchanges expressed prices in 1/8 and 1/16 dollar increments (apparently 1/16 was only introduced at the NYSE in 1997).
Arcorann··on Hotels of Pyongyang
Maybe not the size of Australia, but compare it to this map I generated (Winkel-Tripel projection) [1] where Korea is correctly sized, and you can see it's easily 2-3 times as big as it should be (in terms of scale).

[1] http://worldmapgenerator.com/maps/20200926110400_map_5f6f040...

Arcorann··on Youtube-dlc – Download videos from YouTube or other video platforms
I use youtube-dl to download from Nico Nico Douga, which means having to restart the download every few minutes because the program doesn't send heartbeat requests. There's been a PR to fix this for a couple of years now [1], and a more recent updated PR to add encrypted video support [2], both of which are still open. Meanwhile, the corresponding PR on youtube-dlc [3] is actively being looked at.

[1] https://github.com/ytdl-org/youtube-dl/pull/18230

[2] https://github.com/ytdl-org/youtube-dl/pull/23824

[3] https://github.com/blackjack4494/youtube-dlc/pull/55

Arcorann··on Height Modernization: Recalibrating where the U.S. physically sits on the planet
A few comments:

* Sidereal time is different from solar time; sidereal time measures the Earth's rotation relative to the stars, while solar time measures it relative to the Sun, which moves relative to the stars. Thus, UT1 and sidereal time have different rates.

* Wikipedia's page on day length fluctuations (https://en.wikipedia.org/wiki/Day_length_fluctuations) has a discussion of the influences involved. It also has a handy graph, from which we can see that the average day length is around 2 milliseconds shorter than in the 1970s (hence why we had a leap second every year from 1973-1979, but the last leap second was over four years ago).

* There's also UT2 and UT0. UT2 has a corrections for seasonal variations, while UT0 is derived from raw observations, without correcting for polar motion like UT1. These are rarely used.

Arcorann··on Reverse-engineering the 8086's Arithmetic/Logic Unit from die photos
According to the Japanese Wikipedia page [1] it was actually in response to a lawsuit about V30 breaching the copyright of 8086 microcode. The extra speed would just be a bonus.

[1] https://ja.wikipedia.org/wiki/NEC_Vシリーズ

← PreviousPage 2 of 3Next →