frontpage.
newsnewestaskshowjobs

Open Source @Github

fp.

Turn off and restrict access to Apple Intelligence features on Mac

https://support.apple.com/guide/mac-help/turn-restrict-access-apple-intelligence-mchlb2e44f94/mac
120•alwillis•2h ago•78 comments

What Sun got wrong

https://bcantrill.dtrace.org/2026/09/20/what-sun-got-wrong/
382•chmaynard•5h ago•200 comments

The NASA/ESA Mars Sample Return mission has been canceled

https://www.science.org/content/article/nasa-s-mars-sample-return-mission-dead
19•Muhammad523•31m ago•3 comments

Attention is all you have

https://alicegg.tech/2026/09/21/attention
369•zer0tonin•5h ago•108 comments

Why Does an NPM Math Library Need an Encrypted Loader?

https://safedep.io/mathmain-encrypted-loader/
42•abhisek•1h ago•5 comments

In Search of a Compositional Theory of Self-Stabilization

http://muratbuffalo.blogspot.com/2026/09/in-search-of-compositional-theory-of.html
11•matt_d•40m ago•0 comments

The Advisory Group on Mathematics and Artificial Intelligence

https://terrytao.wordpress.com/2026/09/21/advisory-group-on-mathematics-and-artificial-intelligence/
8•digital55•27m ago•0 comments

Grok 4.7

https://x.ai/news/grok-4-7
352•meetpateltech•3h ago•296 comments

US halts flights at busy East Coast airports, says fiber line cut

https://www.reuters.com/world/us/faa-halts-some-us-east-coast-flights-due-communication-issues-20...
74•allanbreyes•1h ago•34 comments

AI coding has made CI a bottleneck, so we reworked ours to keep up

https://linear.app/now/ci-bottleneck-reworked
4•julian_digital•21m ago•1 comments

Avoiding the babbling-idiot failure in a time-triggered communication system

https://ieeexplore.ieee.org/document/689473
13•ronfriedhaber•1h ago•2 comments

Python Workers are now generally available

https://blog.cloudflare.com/python-workers-ga/
124•torutofu•6h ago•16 comments

Gravity Linux Alpha Release: Linux on the M4 Mac Mini with GPU and DCP Support

https://gravitylinux.org/blog/early-alpha-m4-mac-mini/
7•ADevWithAnIdea•1h ago•0 comments

A restored PDP-11/83 serving this page on 211BSD Unix

http://pdp1173.com/
63•davepl•4h ago•25 comments

This Digital Radio Gets Messages to the World’s Remotest Locations

https://spectrum.ieee.org/hermes-shortwave-radio-digital-data
49•SamuraiLion•3h ago•27 comments

Kev: Tiny Jev-like family of decision models built on top of Qwen3.5

https://github.com/jaredpalmer/kev/tree/main
336•tosh•12h ago•159 comments

How do Traffic Signals Work (2019)

https://practical.engineering/blog/2019/5/11/how-do-traffic-signals-work
34•at1as•3h ago•25 comments

Fable 5 – Median thinking declined in August

https://twitter.com/Lon/status/2101793422487204027
241•espeed•3h ago•162 comments

Advisory Group on Mathematics and Artificial Intelligence

https://openai.com/index/advisory-group-on-mathematics-and-ai/
34•js73js8•2h ago•20 comments

Grim Fandango Puzzle Document (1996) [pdf]

http://gameshelf.jmac.org/2008/11/13/GrimPuzzleDoc_small.pdf
342•kelseyfrog•13h ago•78 comments

Whirlpool Washer Transmission Repair (2007)

https://k0lee.com/2007/01/whirlpool-washer-transmission-repair/
29•userbinator•22h ago•36 comments

What happened to the Snowden archive

https://libroot.org/posts/what-happened-to-the-snowden-archive
649•EXHades•21h ago•464 comments

Help 404 Media Find Out How Your Local Police Are Surveiling You

https://www.404media.co/is-your-city-using-axon-license-plate-cameras-we-need-your-help/
42•paimapi•1h ago•2 comments

AX – Google’s Open Agentic Orchestrator

https://agentexecutor.io
624•blazarquasar•21h ago•284 comments

Wall Street Is Growing Skeptical of the Data Center Boom

https://www.nytimes.com/2026/09/21/business/ai-data-center-ipos.html
12•mikhael•30m ago•4 comments

Noodle Gallery- Open-source, self-hosted alternative to Google Photos and Immich

https://digitalescapetools.com/tools/noodlegallery.html
34•xabd•5h ago•20 comments

M5 Ultra Mac Studio Review

https://www.macstories.net/stories/m5-ultra-mac-studio-review-the-dream-mac-for-local-ai-agents/
189•piotrgrabowski•5h ago•171 comments

Amazon blocks Meta’s new Muse AI agent from shopping on amazon.com

https://www.forbes.com/sites/jonmarkman/2026/09/21/amazon-blocks-metas-new-muse-ai-agent-from-sho...
116•simianwords•2h ago•110 comments

macOS 27: Workaround to avoid downloading AI models and save storage

https://www.reddit.com/r/MacOSBeta/comments/1vlnf13/workaround_to_avoid_downloading_ai_models_and/
156•ano-ther•5h ago•73 comments

Heretic removes restrictions from language models

https://heretic-project.org/
191•Bluestein•15h ago•79 comments
Open in hackernews

US halts flights at busy East Coast airports, says fiber line cut

https://www.reuters.com/world/us/faa-halts-some-us-east-coast-flights-due-communication-issues-2026-09-21/
70•allanbreyes•1h ago

Comments

sc68cal•53m ago
There is also a new ATC system being rolled out, as early as today

https://www.airwaysmag.com/new-post/faa-smart-first-deployme...

whatever1•40m ago
I suspect it is vibe coded. Contract won in June. Deploying in September.

Good luck to all of us.

macintux•17m ago
Deploying first to DC? Yeah, that’ll end well.
gkedzierski•8m ago
I can guarantee you that it was not. Check out DO-278A, and its standards and guidelines that must be followed.
quickthrowman•50m ago
It has been conjectured that the easiest way to locate a buried fiber optic cable is to start digging.

(The actual easiest method is to install the conduit or direct burial cable with tracer wire)

dboreham•35m ago
Local people know where they are because once upon a time a D8 drove through pulling a big orange spool of fiber conduit and passers by chatted about how another fiber was going in. Also around here the contractors seeded the disturbed ground with a wildflower mix (presumably to discourage weeds) so you can also look for straps of wildflowers.

And of course there are marker posts that say "buried fiber optic cable do not dig".

bluGill•9m ago
Fiber was all installed long after we knew locating it was important. I suspect it all had a tracer wire installed with it. Of course sometimes the tracer wire can break.

Before fiber a lot of things were put into the ground with no thought how you would find it again.

atonse•49m ago
I don't quite understand this sort of thing happening. Wasn't the whole point of the internet to be a self-healing network where we route around severed cables, etc?

Or is it that these ATC networks are their own air-gapped network with less redundancy? That just doesn't add up. Or maybe there was only one line going to the ATC, with no multiple "ISPs" like a datacenter would have?

bri3d•38m ago
* Yes, TRACON have their own dedicated links. You can look into ASTERIX and STARS to learn some of the cursed ways the data processing and dataflow work.

* There is supposed to be a primary and a secondary link, in this case the primary failed and the fail-over also failed. It's unclear from the reporting if they were damaged in the same incident or if the failover was not tested or monitored adequately.

The Philadelphia TRACON site has been notoriously unreliable and was supposedly improved in 2025, it's also unclear if these issue actually could stem from that implementation.

wrs•28m ago
I’ve had enough double-redundant links fail - and I mean pretty thoroughly double-redundant, different provider, different media, different physical path - that I’m quite surprised something like the air traffic control system only has two links.
readthenotes1•28m ago
Do you want air traffic control to be on the general internet?

That seems like an extremely foolhardy thing to do.

ssl-3•21m ago
As a tertiary backup: Yeah, maybe I do want that.

It seems like it would present a less-chaotic solution than that provided by having no data communications at all.

cube00•44m ago
> When it went to flip into the backup, we discovered that the backup fiber had a break

Pretty grim that a life critical system wasn't designed to report that the backup fibre was unserviceable until they attempted to switch over to it.

I wonder how long it was down? Days, weeks, months?

readthenotes1•43m ago
A lot of people don't check their backups until they need to restore.

A lot of people are incompetent.

thewebguyd•34m ago
A backup without a restore test isn't a backup at all
bonoboTP•5m ago
You don't always have a copy of your hardware to restore onto. And the test's entire purpose is that you're not yet sure whether your restore will truly work. So you can't just run a backup and restore on your true prod system, because you're not sure it won't wreck it. So you need extra money to have a second system onto which you try to restore. If you don't have a lot of money, you will want to actually use your disks for storage, not to put them into a second testing server. Of course I'm not talking about very professional companies with super critical data. Just simpler smaller scale places or consumers.
toast0•31m ago
Sometimes your multiple fiber paths end up in the same bundle, severed by the same backhoe. It's always a fun day when that becomes apparent.
tomasphan•43m ago
ATC seems like a great place to have redundancy with a starlink dish on the roof.
peri-cl•14m ago
I think this the same system that was the topic of a major contractor dispute a few months ago, between Verizon (incumbent fiber contractor) and SpaceX (lobbying to replace it).

https://news.ycombinator.com/item?id=43205435 ("Starlink to take over $2.4B contract to overhaul air traffic control comms (theverge.com)")

dctoedt•21m ago
Not to be conspiratorial, but about an hour ago I saw this in The Economist: "Russia’s grey-zone attacks on Europe are growing more brazen"

[QUOTE:]

Russia has been staging covert operations and deniable provocations against European countries for many years. Since its full-scale invasion of Ukraine began in 2022 they have increased. These have included incursions by reconnaissance drones, hacking, arson, parcel bombs targeting cargo flights and plots to kill executives of leading European arms firms. In recent months the pace of such shadowy attacks appears to have risen again. The Russian operations have three main goals, according to analysts and security officials: trying to coerce European countries into halting their support for Ukraine; raising the costs of providing that support; and attempting to make NATO look powerless.

[/QUOTE]

And of course there've been "suspicious" cable cuts in the Baltic Sea and other European waters ....

https://www.economist.com/europe/2026/09/21/russias-grey-zon...

cyanydeez•15m ago
So of course if the FAA is going to put AI into the watchtowers, they're obviously going to use local AI and not rely on some random Amazon cloud infra in some middle eastern country.

right. of course, no ones going to cut corners on the safe use of AI and secure infrastructure in this administration.

kqgnkqgn•9m ago
Building multiple diverse paths and monitoring for fiber cuts is not hard. Having 2 fiber paths is insufficient for even only moderately important workloads at a tech company. Overlapping fiber cuts happen. For something with significant economic and safety impact this is just crazy.

Sometimes the level of incompetence / lack of care in organizations like this astounds me. I understand issues like this can be complicated and systemic but it honestly makes me think very poorly of the technologists building these systems in government.

baggachipz•8m ago
Maybe Sean Duffy was just binge-watching his old reality tv shows and gobbled up the bandwidth?
kqgnkqgn•15m ago
You certainly don’t need to run this over public Internet to get resiliency over multiple paths.
koolba•27m ago
Put all your backups in one basket, and then pray that nobody crushes the basket.
oasisbob•12m ago
This is a pretty classic network operator story: go to great lengths to provide for physically diverse paths, then not notice when your provider refactors and grooms them onto the same bundle.
konfusinomicon•8m ago
last time this happened in my area a local farmer was burying a cow and took out the whole towns connection
krashidov•23m ago
Could this be sabotage?
kqgnkqgn•16m ago
That seems more than merely plausible given current tensions and the location/timing connection with NYC and UN.
zoomablemind•15m ago
That's very uncharacteristic, especially given all those contingency requirements (backup policies, failovers, testing schedules etc.) imposed on corporations/companies in the wake of 9/11.
pixl97•9m ago
You actually have to ensure that someone isn't just checking boxes the tests passed and the tests actually passed.

I worked for a regional ISP that had a major outage when the redundant fiber provided by the telephone company was cut in one place triggering a full loss of connectivity. It also caused a massive 911 outage for 200,000 people as it isolated the 911 center from the city core.

Turns out the phone company didn't connect one side of the ring topology even though they certified they did. Needless to say lawsuits abounded.