Greg Pfeil

@sellout
397 Followers
348 Following
653 Posts

#prosecuteICE

Freediver, alpine/backcountry/nordic skier, rock climber, programmer. Turning cool ideas into terrible programming languages. Twitter early-abandoner. Thought Mastodon would be more metal.

http://pronoun.is/they

In a former life, I was a composer and classical guitarist.

freediving45m depth / 4:14 static
climbing5.12c / V6
home pagehttps://technomadic.org/
GitHubhttps://github.com/sellout

"Healthy people cost less.
Educated people contribute more.
Housed people are more stable.

...in a healthy society there are no "undeserving".
There are just people."

Since we're on the subject, I'm curious if there's a resource that explains the practical difference between using the Bishop style (equivalence with Fin) and the Kuratowski style (list/tree quotient) for finite sets. Donnacha Kidney covers this topic in his master's thesis, but his approach is somewhat one-sided—he reduces the Kuratowski style to the Bishop style. For decidable types, the two approaches seem to be completely equivalent.

I’m trying to figure out the best way to define FinInj and FinSur, as well as how to build a metatheory on top of them for things that Simpson's framework relates to, such as the Schanuel topos and nominal algorithms. I suspect Bishop is more convenient for some things and Kuratowski for others.

I just received the most human spam text.

“I’ll be in Seattle soon and wanted to say hi in the most human way possible. How are you doing?”

Today, during an IEEE standards meeting, one of the participants had to stop participating and then run to a bomb shelter because of an undeclared war against Iran.

This is obscenely bad. I'd just like to make that clear. People like me are focusing on creating wonderful technical communications solutions, all open source, and participating everywhere we can.

This horrific damage is all because of the United States government.

As a resident of the State of California, I am so sorry.

an LLM is a compiler in the same way that a slot machine is an ATM

In 2013 Aaron Swartz committed suicide for facing 35 years in prison for mass downloading scientific articles.

13 years later, Meta is almost getting away with an infraction orders of magnitude larger.

The law didn't change.

https://torrentfreak.com/uploading-pirated-books-via-bittorrent-qualifies-as-fair-use-meta/

Uploading Pirated Books via BitTorrent Qualifies as Fair Use, Meta Argues * TorrentFreak

In an ongoing lawsuit, Meta now argues that uploading pirated books to strangers via BitTorrent qualifies as fair use.

If a Klein bottle could wear pants, would it be like this or like this?

#mathstodon #math #maths #shitpost

The Department of Homeland Security has shown itself again and again to be an unreliable source. Why do corporate media continue to take its claims about DHS violence at face value?

https://fair.org/home/why-treat-dhss-known-liars-as-reliable-sources/

Why Treat DHS’s Known Liars as Reliable Sources?

It's long past time for news coverage to reflect journalists' knowledge that DHS exaggerates, shares dubious statements and flat-out lies.

FAIR

We had so many talks this time!

GHC compiler plugin to ease backwards compatibility warnings: https://github.com/sellout/ghc-compat-plugin/tree/catch-incompatible-extensions/core

by @sellout

Writing Haskell code to see if a recreational math puzzle was broken by @fractalkitty

Solomon talked about different impedance matching for audio signals or power delivery.

Sandy talked about several Algebraic Theories of Music and why they don't work!

I talked about 10 Gb networking at home.

We had ten people show up! w00!

In related news, the National Park Service today, in compliance with President Trump's order, and in violation of their agreement with the City of Philadelphia, removed the information displays about slavery that were formerly in Independence Hall National Park.

https://www.nytimes.com/2026/01/22/us/politics/park-service-philadelphia-slavery-exhibit.html

https://www.cbsnews.com/philadelphia/news/presidents-house-independence-mall-slavery-trump/

National Park Service Dismantles Slavery Exhibit in Philadelphia

The exhibit memorialized nine people enslaved by George Washington. The Park Service said it was being removed in accordance with a directive from President Trump.

The New York Times