News for hackers. Stuff that matters.

amosj

We just need more bones! It was easy all along
Also explainxkcd: https://www.explainxkcd.com/wiki/index.php/Main_Page

> Today, a remote code execution vulnerability was found in PHP, called php2shell. [...] Since explain xkcd is affected by this exploit, I have decided to take the wiki down until tomorrow.

Re:BB(10) > Graham's Number on Tuesday October 13, 2026 @11:10AM (#50072958)
Busy beaver numbers are interesting from a computational perspective. They verge in some ways on unknowable, but as this post shows, sometimes there is some knowability, if you will. I've always enjoyed this blog post about them https://www.scottaaronson.com/writings/bignumbers.html
Re:No Country for Mediocre Mathematicians on Monday August 31, 2026 @04:33PM (#49514545)
Brilliant
Re:Play Dates on Monday August 24, 2026 @03:32PM (#49424754)
I wonder about this a lot. I've been to small communities where children are still free to roam outside, with minimal to no adult supervision. It always seemed nice. Now that I have a toddler, it seems like a crime not to have it
Re:What Is a Product? on Friday August 07, 2026 @03:40PM (#49215319)
For a second I thought this was going to be about abstract-algebra/category-theory
Re:Thin Desires Are Eating Your Life on Tuesday December 16, 2025 @04:30AM (#46286513)
Well written, this has given a concrete description to a vague notion that has been in my mind for a while
Re:ADS-B Exposed on Tuesday October 14, 2025 @09:24AM (#45579748)
I second this, this video is amazing. It had a big impact on my thinking the first time I saw it
Re:Can artificially altered clouds save the Great Barrier Reef? on Thursday January 20, 2022 @07:42AM (#30008162)
"We don't know who struck first, us or them, but we know that it was us that scorched the sky." [1]

(note: I am absolutely for trying to save the great barrier reef, and I'm not qualified to judge the feasibility or consequences of this approach, so no moral or other judgement intended. If it can be made to work without breaking Earth production, I hope it gets merged)

[1] https://www.youtube.com/watch?v=JVEHSXL9UPM

Re:DuckDuckGo hits 100 billion all time searches on Thursday January 13, 2022 @03:52PM (#29926682)
Brilliant, I've switched to DDG recently and have been very pleased with it
Greetings HN,

This is an app I built to help me combat the (previously!) firmly-established habit of pulling out my phone to read the news / reddit whenever I had 5 minutes of downtime. The idea is to channel that energy in a more productive direction: instead of opening XYZNews for the nth time I'll try reading wikipedia - but in a different language. That way I'll learn something new about the world, practice that language, and not blindly stare at the news feed hoping something interesting came up since the last time I looked at it 1 hour ago.

The app offers sources of content in a foreign language (by default wikipedia but any website can be added) and a built-in dictionary, which is activated by double-tapping a word [1]. It's actually worked quite well, and though I do still read HN I've drastically reduced the number of times I compulsively open news websites.

Fun fact, some wikipedia versions (e.g. Italian) have a "quote of the day". Those have become my favorites. Otherwise all pages have an "article of the day" which is often interesting.

As mentioned the websites are configurable. The languages/dictionaries are hardcoded (mostly wordreference), but trivial to add by modifying the source. The built-in browser is sometimes buggy and gets dizzy if it follows too many redirects, but it builds in Android Studio and otherwise works fine most of the time[2]. Any feedback welcome!

(note: no ads, no sign-in, no data is collected by the app)

(disclosure: I've allowed myself to resubmit this because the last title did not show the relevance to the subject of battling social media addiction, which I think is of interest. I believe this is allowed within the site's guidelines)

[1] Although e.g. Chrome has a built in integration with wordreference, it still requires too many clicks.

[2] might crash if you cross the international dateline in a canoe. I mean it might. If you try please let me know.

Re:Brian Kernighan's Home Page on Friday January 07, 2022 @08:03AM (#29838613)
> MY NAME IS BEING USED IN A PHISHING ATTACK. > DO NOT RESPOND TO MAIL OFFERING MONEY FOR UNDERGRAD RESEARCH ASSISTANTS.

I wonder if that's been effective. I suppose the targets are students at Princeton so once repeated enough, on his web page and elsewhere, it'll make using his name less profitable.

Re:Dark Crystal on Wednesday January 05, 2022 @09:19AM (#29809203)
sincere question: what are the better alternatives?

Do any have a (different) key technological component or do they mostly rely on other non-technology-based trust channels like a notary or a lawyer, as other comments have mentioned?

Re:Ask HN: Building a Desktop App in 2022 on Monday January 03, 2022 @03:49PM (#29786665)
Flutter is excellent, not too heavy and has decent cross platform support
Greetings HN!

Wikireader is inspired by two facts:

  - I like learning foreign languages
  - Some (most) days I will open certain news sites more times than I'd like to admit, "just to check if there's something interesting"
This app is an attempt to channel that energy in a more productive direction. Instead of opening XYZNews for the nth time I'll try reading wikipedia - but in a different language. That way I'll learn something new about the world AND practice that language. At least that's the idea. Sometimes it even works.

Although e.g. Chrome has a built in integration with wordreference, it still requires too many clicks. So I rolled my own. This has been sitting on a dusty shelf for a while. But it still builds in Android Studio, so I thought I'd share. Any feedback welcome!

Fun fact, some wikipedia versions have a "quote of the day". Those have become my favorites.

The list of websites is configurable, so one could use it for other websites too - by default each language has wikipedia and a news site. The built-in browser is sometimes buggy and gets dizzy if it follows too many redirects.

Re:Making Emacs Popular Again (2020) on Thursday November 04, 2021 @03:34PM (#29111567)
Emacs groks my soul. I can't defend it's flaws. But if I'm reborn a developer in a thousand years I sure hope it will still be around. Otherwise I'd rather be a shrimp or a dolphin or something (I hope those will be around too)
Re:I made my own garum on Friday October 29, 2021 @04:25AM (#29036453)
From wikipedia [1]:

> Garum is a fermented fish sauce which was used as a condiment in the cuisines of Phoenicia, ancient Greece, Rome, Carthage and later Byzantium. Liquamen is a similar preparation, and at times they were synonymous. [...] Like the modern fermented soy product soy sauce, fermented garum is a rich source of umami flavoring due to the presence of glutamates.

There's also this wonderful list of fish sauces on wikipedia: https://en.wikipedia.org/wiki/List_of_fish_sauces

Fish-sauce-bar, the next big thing?

[1]https://en.wikipedia.org/wiki/Garum

Re:A Fire Upon the Deep by Vernor Vinge (1992) on Sunday October 03, 2021 @12:56PM (#28738590)
This is an extraordinary book and one of my top 5 among many a science fiction novel.

"You want a deepness that endures, a deepness that [we] can depend on? there is a deepness in the sky, and it extends forever"

it's got VR headsets, distributed computers - hacking plays a major role. Only way it could be better is if I could forget the plot so I could read it again

Re:Why is everything so hard in a large organization? on Thursday September 30, 2021 @08:45AM (#28705668)
I've said no several times when asked if I'd be interested in management - I like writing code and solving problems, management is only vaguely necessary in some bureaucratic unfortunate way. I would say that that approach to writing software defined my 20s. But in the past few years I've become fascinated by the problem of organization and it's made me appreciate good management so much more - getting more than two people to act in concert is _hard_. Getting 10 or 30 or 1000 of them is so much harder. If I think about it too much I start wondering how anything ever gets done at all, anywhere
Re:A different kind of keyboard on Thursday September 23, 2021 @10:53AM (#28630041)
That's an awesome layout, I will have to try it. I actually have two twiddlers - the dream was to split the layout between the two, so that all letters would have easy 2-button chords and to achieve a higher wpm. It works fairly well but I never practiced enough to really make it productive... might have to try that mirrorwalk layout though
Re:That time I told my wife I wanted to quit my job on Wednesday September 22, 2021 @01:19AM (#28613284)
Thank you for sharing, especially your transparency about your doubts, your savings and your time. I find this inspiring and encouraging