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Boosted by brib@bribstodon.xyz ("brib :neofox_floof:​ :Nonbinary:"):
mira@outerheaven.club ("Mira :neocat_flag_nb:") wrote:

I am a well-adjusted, functioning adult

dysfun@treehouse.systems ("gaytabase") wrote:

what is erasure anyway? it's not the same thing as const. they both imply being known at compile time, but const also implies some runtime presence, whereas erased implies no runtime presence. this makes it perfect for proofs that should be checked during compilation but we don't want to have to check at runtime.

the common case everybody wants of course is generics. are these const or erased? i guess that depends on how you feel about reifying types at runtime.

now, many dependently typed systems choose to have a Prop universe, for runtime irrelevant data. what the world token buys you is not having to have a Prop universe. why is that a problem? imagine we see something used to the right of a colon. it used to be that meant it was a Type, but now it could also be a Prop. so what do you do, assume it's a Type unless they annotate it as a Prop? try both?

by hardcoding the very short list of all types that are erased into the compiler, you don't suffer this problem.

idris 1 had a universe of uniqueness types. not sure what it did about inferring them, probably assume it was a Type unless told otherwise.

Boosted by stephen@social.calmabiding.me ("Stephen Castro-Starkey"):
farseen@fedi.nptr.xyz wrote:

"Programming is building a mental model. It is not mechanical code production. The shared mental model in developers' minds is the real product. A program is "living" only while the team understands this theory. When programmers leave, it becomes "dead". Without the original theory, new maintainers treat software as a black box, creating patchwork fixes that cause side effects and architectural decay."

Absolute truth.

Originally from Peter Naur's "Programming as Theory Building" (1985)

copied from @animesh 's page
thread: https://mastodon.social/@animesh/116685030985963198

dysfun@treehouse.systems ("gaytabase") wrote:

idris has a world type which is runtime irrelevant and used to sequence I/O.. or to sequence linear I/O.

now isn't that a strange thing? we can linearly bind it to enforce the sequentiality, but we want it to be erased too. the normal erasure mechanism is multiplicity 0, which we're not using, because we're already using multiplicity 1. and so we rely on the world token being hacked up in the compiler to get the best of both worlds.

or perhaps linearity and erasure are more orthogonal in reality than the (admittedly nice) semiring of 0, 1, many.

Boosted by baldur@toot.cafe ("Baldur Bjarnason"):
kralcttam ("kralcttam ☕️") wrote:

Happy Stanislav Petrov day!

Today marks 43 years since Petrov decided to wait for confirmation before escalating a missile alert up the chain of command in the Soviet Air Defense, preventing nuclear war.

A hero for not trusting automated systems fully.

https://en.wikipedia.org/wiki/1983%5FSoviet%5Fnuclear%5Ffalse%5Falarm%5Fincident?wprov=sfti1

Boosted by dysfun@treehouse.systems ("gaytabase"):
ezri@shitpost.trade wrote:

after the second world war, some dutch houses were equipped with circular stairwells with the purpose of frightening any future german invaders

Boosted by kornel ("Kornel"):
flaki@flaki.social ("Flaki") wrote:

RE: https://flaki.social/@flaki/117336664204551160

This reminds me, shoutouts to IKEA (not sure if it's every IKEA out there, or just a few like the Tallinn one).

Giant slab of concrete building, flat roof blanketed in solar panels, and they just installed a dozen or so Type 2 EV chargers in the parking lot so you can plug your car in while you spend the next couple hours wandering the aisles and stuffing meatballs.

It costs them literally nothing to charge your car on most days (and maybe pennies at other times which they 10x make back). It's *always* full, all spots occupied (and Tallinn is not as heavy on EVs as some of our northern neighbors).

andrewnez ("Andrew Nesbitt") wrote:

This Week in Package Management: 26 September 2026

https://nesbitt.io/2026/09/26/this-week-in-package-management.html

Boosted by dysfun@treehouse.systems ("gaytabase"):
MaddieM4@raphus.social wrote:

@arichtman @djsundog I have... so many thoughts about this, that I probably need to take a day and write them all out in a character-unconstrained medium, so *I* can better understand what I believe here. But here's... *some* of that.

I truly believe AWS was a mistake. Er- I believe AWS was a swindle, and adopting it was a mistake, let's be precise. Here's the thing about monoliths pointed at a database: it's really rare that you need more than that, and if you think you need more, you should be able to justify that out loud while an old-fashioned powder musket is aimed point blank at your brain stem. Infrastructure is the worst place to have complexity, because it really impairs your ability to locally develop realistically, do CI realistically, etc. And all the abstractions multiply the shit you need to know. It's a fucky, delicate place, where mistakes make very expensive noises.

The cornucopia of flashy goodies in AWS is bait. Quite frankly, the cloud itself usually is.

1/3

Boosted by baldur@toot.cafe ("Baldur Bjarnason"):
mattblaze@federate.social ("Matt Blaze") wrote:

“Our software went rogue!” No. You programmed it wrong.

baldur@toot.cafe ("Baldur Bjarnason") wrote:

How can you build a better life online?

Basically, don't rely on social media for all your information needs

See the full video that talks about how context collapse in social media undermines expertise at https://youtu.be/dcz8YzRNo5M

jwz wrote:

It's a good thing I write these things down, because I'm now about 7 deep in absolute bangers about "how much it sucks to try and run a business" that I can't post about yet.

Like even when I'm talking to my friends I'm like, "oh shit, I forgot to tell you about Apocalypse Number 4!"

Boosted by baldur@toot.cafe ("Baldur Bjarnason"):
ketan@climatejustice.social ("Ketan Joshi") wrote:

A massive Microsoft data centre was fined after a drone investigation revealed the use of illegally operating gas turbines -->>

https://www.theguardian.com/environment/2026/sep/25/new-jersey-fines-datacenter-unpermitted-generators

Boosted by baldur@toot.cafe ("Baldur Bjarnason"):
ketan@climatejustice.social ("Ketan Joshi") wrote:

I wonder if I maybe don't say this enough: the gas-fired data centre boom is *planned* but not *inevitable*.

In fact, the plans are fragile, and this petrotech dream only works if everything lands with perfect timing and poise.

https://stand.earth/insights/west-virginia-microsoft-monarch-data-center/

Boosted by baldur@toot.cafe ("Baldur Bjarnason"):
tante@tldr.nettime.org wrote:

If you thought the Omarchy Fascist power grab (https://tante.cc/2026/09/11/power-grab/) was over, Alibaba committed another 3 millions to DHH's foundation.

Boosted by jwz:
apilsetas wrote:

Desirée Dolron

#photography

Boosted by baldur@toot.cafe ("Baldur Bjarnason"):
davidgerard@circumstances.run ("David Gerard") wrote:

Oracle invokes ‘force majeure’ on OpenAI data centre contract

Oracle and Blue Owl are going just great

https://www.youtube.com/watch?v=Mj3MYXaR4nA&list=UU9rJrMVgcXTfa8xuMnbhAEA - video
https://pivottoai.libsyn.com/20260925-oracle-invokes-force-majeure-on-openai-data-centre-contract - podcast

time: 4 min 50 sec

https://pivot-to-ai.com/2026/09/25/oracle-invokes-force-majeure-on-openai-data-centre-contract/ - blog post

Boosted by jwz:
gregeganSF@mathstodon.xyz ("Greg Egan") wrote:

“So much for free speech.

The studio releasing Alex Gibney’s new Elon Musk documentary Musk is finding itself unable to buy an ad on the biggest social platforms.”

https://www.hollywoodreporter.com/business/digital/elon-musk-documentary-trailer-rejected-tiktok-youtube-1236710259/

Boosted by jwz:
jwz wrote:

@tuxracer You seem nice.

I have known you for 2 seconds and enjoyed neither of them.

Boosted by baldur@toot.cafe ("Baldur Bjarnason"):
diegoe wrote:

LLM Policies: Progress At All Costs

https://diegoe.be/2026/09/25/llm-policies-progress-at-all-costs/

#gnome #kde #linux

baldur@toot.cafe ("Baldur Bjarnason") wrote:

“A Clearer Picture of AI and the College Job Market”

https://onedtech.philhillaa.com/p/a-clearer-picture-of-ai-and-the-college-job-market?ref=2ndbreakfast.audreywatters.com

> Taken together, the emerging research makes it increasingly likely, in my judgment, that AI is adding to the deterioration in early-career opportunities.

baldur@toot.cafe ("Baldur Bjarnason") wrote:

“The “Nonexistent” Research on AI’s Benefits for Education”

https://www.insidehighered.com/news/tech-innovation/artificial-intelligence/2026/09/14/nonexistent-research-ais-benefits-education

> But according to preliminary findings he published last month, several of the existing peer-reviewed studies that say AI is an effective learning tool are based on flawed methodologies and analyses that rely on misapplied, miscalculated or misinterpreted statistics.

andrewnez ("Andrew Nesbitt") wrote:

Experimenting with Bazel for graphing the dependencies within different git-pkgs repos: https://github.com/git-pkgs/bazel

baldur@toot.cafe ("Baldur Bjarnason") wrote:

“To Dismantle Democracy, You Subvert Public Schools”

https://2ndbreakfast.audreywatters.com/to-dismantle-democracy-you-subvert-public-schools/

> The subversion of democracy -- at its core, that is what the efforts to undermine public school truly are -- has shifted the burden of changing “the system” onto the individual. Such is goal of the neoliberal fantasy, in which everything is reduced to a market transaction.

Boosted by brib@bribstodon.xyz ("brib :neofox_floof:​ :Nonbinary:"):
kestral@masto.hackers.town ("Kestral") wrote:

Happy #Caturday from the keyboardist who is always sleeping during rehearsal.

brennan@social.lol ("Brennan Kenneth Brown") wrote:

Years ago, there was an amazing, free, open-source online community bootcamp called Learn.co by Flatiron School which was primarily Ruby-focused. Of course, all of the infrastructure hasn't existed for a long time.

But the repositories are still on GitHub. Over 12,000 of them. I'm going to see how much I can organize and restore. It would be a great resource to get people into Ruby, and it's just sitting there, unused and rather unparseable right now.

@moonsea

ireneista@irenes.space ("Irenes (many)") wrote:

@jonny also please notice the utilitarianism as an aspect of it

Boosted by ireneista@irenes.space ("Irenes (many)"):
sjpurrs ("SJ") wrote:

You know, the Fediverse reminds me of the local oval in my childhood neighbourhood.

Every day after school, I'd get home, raid the fridge and bolt out the door to the oval. I had no idea who would be there but other kids would always pop in and we'd kick the ball around or organise a game. Then, darkness would fall and we'd all disappear.

We never called each other or planned anything but we connected when our paths crossed. I really like being back in that world.

#fediverse

Boosted by brib@bribstodon.xyz ("brib :neofox_floof:​ :Nonbinary:"):
DocAtCDI wrote:

Anyone want to buy a broken barometer? No pressure.

Boosted by brib@bribstodon.xyz ("brib :neofox_floof:​ :Nonbinary:"):
brib@bribstodon.xyz ("brib :neofox_floof:​ :Nonbinary:") wrote:

@inquiline Damn you, "this documentary is so hated by Silicon Valley that they're not accepting money to promote it" works on me as free advertising. Now I'm gonna have to actually watch the movie to see what all the fuss is about. Smh. /lh