Alexis Rondeau

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Everything I publish, in the order I published it: dispatches from Twitter, videos from YouTube and notes from my vault, archived here in full — text, images, video and links — so they outlive the platforms.

857 dispatches since March 2014 · page 14 of 35

18 views
In reply to @SpringStreetNYC · Dec 5, 2025

LOL, got 100% nerd-sniped by my friend Sönke this week and wound up building a small spaceship.

On Monday he's like "Hey, what if you found obscure seed phrases embedded in public texts? You'd only need to remember the name of the book and the paragraph and go from there."

I honestly could care less about crypto(currencies) and I'm 100% sure this is like cryptanalysis 101. But, yeah, it seemed like an interesting problem anyways.

First, I downloaded a few hundred books from Gutenberg, wrote a ruby script and found BIP39 word sequences with a tolerable buffer for filler-words.

Then, I was like, okay, gotta now check them against actual addresses. Downloaded a list of funded ETH addresses. Wrote the checker in ruby. Ran it. No hits but this was now definitely weirdly interesting.

Because: And what if I downloaded the whole pg19 text corpus to scan! And what if I'd add BTC addresses! And what if I checked every permutation of the seed phrase!

Everything got really slow once I got to processing 12G of raw text for finding sequences and then checking a few million candidates with 44.000+ variations per candidate.

So, let's rewrite this into C! And since I've got 16 cores, let's parallelize this puppy! And since it's a MacBook, let's use GCD! Optimize all the things!

Lol, so NOW this thing is so fucking FAST. Takes four minutes to go through the full pg19 corpus and generates 64,205,390 "interesting" seed phrases. The fully parallelized checker (see Terminal screenshot) processes 460 derived addresses per second.

I really don't care if I get a match or not. I feel like I started with building a canoo and wound up with a spaceship is in itself just the best thing in the world.

Anyways. Just wanted to share this. If anyone wants, I can put the whole thing on github, too. Let me know!

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Small changes, up from 460 to 12,898 checks per second.

37 views

I took the interview just this morning!
Now, here's the whole dataset :D

Quoting @ClementDelangue · Dec 8, 2025

The @AnthropicAI interviewer dataset is number one trending on HF, congrats! t.co/gqmXtaAtk4 t.co/JBCCtxgP27

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huggingface.coAnthropic/AnthropicInterviewer · Datasets at Hugging FaceWe’re on a journey to advance and democratize artificial intelligence through open source and open science.↗ huggingface.co
2 views

@haydendevs Wrote down an idea around this yesterday - basically have LLMs generate text using homoglyphs. Which would be perfectly readable and verifiably of non-human origin

Quoting @SpringStreetNYC · Dec 6, 2025

Idea for "marking" AI-generated text: Make a final pass that replaces the regular letters with UTF8 homoglyphs instead. Still 100% readable and verifiably of non-human origin.

Case in point, here's the homoglyph version of this message:

ꓲdеа fоr "mаrkіոց" ꓮꓲ-ցеոеrаtеd tехt: ꓟаkе а fіոаꓲ раѕѕ tһаt rерꓲасеѕ tһе rеցսꓲаr ꓲеttеrѕ ԝіtһ ꓴꓔꓝ8 һоmоցꓲурһѕ іոѕtеаd. ꓢtіꓲꓲ 100% rеаdаbꓲе аոd νеrіfіаbꓲу оf ոоո-һսmаո оrіցіո.

395 views
In reply to @kimmonismus · Dec 7, 2025

This is actually the biggest danger: that workers still have to keep it a secret that they use AI at work because so many employers still think AI is still at the GPT-4 level.

This has to change, ASAP. t.co/C80moLWxo2

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finalroundai.comAnthropic Study Finds Most Workers Use AI Daily, but 69 Percent Hide It at WorkAnthropic research shows most workers rely on AI but stay quiet about it, with 69% reporting social stigma around using AI tools at work.↗ finalroundai.com
32 views
In reply to @SpringStreetNYC · Dec 6, 2025

Idea for "marking" AI-generated text: Make a final pass that replaces the regular letters with UTF8 homoglyphs instead. Still 100% readable and verifiably of non-human origin.

Case in point, here's the homoglyph version of this message:

ꓲdеа fоr "mаrkіոց" ꓮꓲ-ցеոеrаtеd tехt: ꓟаkе а fіոаꓲ раѕѕ tһаt rерꓲасеѕ tһе rеցսꓲаr ꓲеttеrѕ ԝіtһ ꓴꓔꓝ8 һоmоցꓲурһѕ іոѕtеаd. ꓢtіꓲꓲ 100% rеаdаbꓲе аոd νеrіfіаbꓲу оf ոоո-һսmаո оrіցіո.

Love it. Unicode calls them "confusables" and they have the full list here:

18 views
In reply to @SpringStreetNYC · Dec 5, 2025

LOL, got 100% nerd-sniped by my friend Sönke this week and wound up building a small spaceship.

On Monday he's like "Hey, what if you found obscure seed phrases embedded in public texts? You'd only need to remember the name of the book and the paragraph and go from there."

I honestly could care less about crypto(currencies) and I'm 100% sure this is like cryptanalysis 101. But, yeah, it seemed like an interesting problem anyways.

First, I downloaded a few hundred books from Gutenberg, wrote a ruby script and found BIP39 word sequences with a tolerable buffer for filler-words.

Then, I was like, okay, gotta now check them against actual addresses. Downloaded a list of funded ETH addresses. Wrote the checker in ruby. Ran it. No hits but this was now definitely weirdly interesting.

Because: And what if I downloaded the whole pg19 text corpus to scan! And what if I'd add BTC addresses! And what if I checked every permutation of the seed phrase!

Everything got really slow once I got to processing 12G of raw text for finding sequences and then checking a few million candidates with 44.000+ variations per candidate.

So, let's rewrite this into C! And since I've got 16 cores, let's parallelize this puppy! And since it's a MacBook, let's use GCD! Optimize all the things!

Lol, so NOW this thing is so fucking FAST. Takes four minutes to go through the full pg19 corpus and generates 64,205,390 "interesting" seed phrases. The fully parallelized checker (see Terminal screenshot) processes 460 derived addresses per second.

I really don't care if I get a match or not. I feel like I started with building a canoo and wound up with a spaceship is in itself just the best thing in the world.

Anyways. Just wanted to share this. If anyone wants, I can put the whole thing on github, too. Let me know!

Image from the post

I would say it's pretty performance but, the actual cryptanalysis is very naïve. I call it a cute-force attack 😁

18 views
In reply to @SpringStreetNYC · Dec 6, 2025

Idea for "marking" AI-generated text: Make a final pass that replaces the regular letters with UTF8 homoglyphs instead. Still 100% readable and verifiably of non-human origin.

Case in point, here's the homoglyph version of this message:

ꓲdеа fоr "mаrkіոց" ꓮꓲ-ցеոеrаtеd tехt: ꓟаkе а fіոаꓲ раѕѕ tһаt rерꓲасеѕ tһе rеցսꓲаr ꓲеttеrѕ ԝіtһ ꓴꓔꓝ8 һоmоցꓲурһѕ іոѕtеаd. ꓢtіꓲꓲ 100% rеаdаbꓲе аոd νеrіfіаbꓲу оf ոоո-һսmаո оrіցіո.

Until then you can also use Pudding to prove you're writing is human!

1 like · 32 views
In reply to @SpringStreetNYC · Dec 6, 2025

Idea for "marking" AI-generated text: Make a final pass that replaces the regular letters with UTF8 homoglyphs instead. Still 100% readable and verifiably of non-human origin.

Case in point, here's the homoglyph version of this message:

ꓲdеа fоr "mаrkіոց" ꓮꓲ-ցеոеrаtеd tехt: ꓟаkе а fіոаꓲ раѕѕ tһаt rерꓲасеѕ tһе rеցսꓲаr ꓲеttеrѕ ԝіtһ ꓴꓔꓝ8 һоmоցꓲурһѕ іոѕtеаd. ꓢtіꓲꓲ 100% rеаdаbꓲе аոd νеrіfіаbꓲу оf ոоո-һսmаո оrіցіո.

This conversation doesn't need to be covert either. In fact, I think that AI-generated text should have it's own visual voice! And it looks like, for the Latin alphabet at least, there are several 'typefaces" that could be built.

Source:

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GistUnicode Look-alikesUnicode Look-alikes. GitHub Gist: instantly share code, notes, and snippets.↗ gist.github.com
3 replies · 1 like · 32 views

Idea for "marking" AI-generated text: Make a final pass that replaces the regular letters with UTF8 homoglyphs instead. Still 100% readable and verifiably of non-human origin.

Case in point, here's the homoglyph version of this message:

ꓲdеа fоr "mаrkіոց" ꓮꓲ-ցеոеrаtеd tехt: ꓟаkе а fіոаꓲ раѕѕ tһаt rерꓲасеѕ tһе rеցսꓲаr ꓲеttеrѕ ԝіtһ ꓴꓔꓝ8 һоmоցꓲурһѕ іոѕtеаd. ꓢtіꓲꓲ 100% rеаdаbꓲе аոd νеrіfіаbꓲу оf ոоո-һսmаո оrіցіո.

39 views
In reply to @SpringStreetNYC · Dec 5, 2025

LOL, got 100% nerd-sniped by my friend Sönke this week and wound up building a small spaceship.

On Monday he's like "Hey, what if you found obscure seed phrases embedded in public texts? You'd only need to remember the name of the book and the paragraph and go from there."

I honestly could care less about crypto(currencies) and I'm 100% sure this is like cryptanalysis 101. But, yeah, it seemed like an interesting problem anyways.

First, I downloaded a few hundred books from Gutenberg, wrote a ruby script and found BIP39 word sequences with a tolerable buffer for filler-words.

Then, I was like, okay, gotta now check them against actual addresses. Downloaded a list of funded ETH addresses. Wrote the checker in ruby. Ran it. No hits but this was now definitely weirdly interesting.

Because: And what if I downloaded the whole pg19 text corpus to scan! And what if I'd add BTC addresses! And what if I checked every permutation of the seed phrase!

Everything got really slow once I got to processing 12G of raw text for finding sequences and then checking a few million candidates with 44.000+ variations per candidate.

So, let's rewrite this into C! And since I've got 16 cores, let's parallelize this puppy! And since it's a MacBook, let's use GCD! Optimize all the things!

Lol, so NOW this thing is so fucking FAST. Takes four minutes to go through the full pg19 corpus and generates 64,205,390 "interesting" seed phrases. The fully parallelized checker (see Terminal screenshot) processes 460 derived addresses per second.

I really don't care if I get a match or not. I feel like I started with building a canoo and wound up with a spaceship is in itself just the best thing in the world.

Anyways. Just wanted to share this. If anyone wants, I can put the whole thing on github, too. Let me know!

Image from the post

LOL, forgot to mention.

There was a short-lived exploration into writing a Metal shader for a part of the pre-processing. I got pretty far but I backed out because it was slower than running things in parallel.

5 replies · 2 likes · 73 views

LOL, got 100% nerd-sniped by my friend Sönke this week and wound up building a small spaceship.

On Monday he's like "Hey, what if you found obscure seed phrases embedded in public texts? You'd only need to remember the name of the book and the paragraph and go from there."

I honestly could care less about crypto(currencies) and I'm 100% sure this is like cryptanalysis 101. But, yeah, it seemed like an interesting problem anyways.

First, I downloaded a few hundred books from Gutenberg, wrote a ruby script and found BIP39 word sequences with a tolerable buffer for filler-words.

Then, I was like, okay, gotta now check them against actual addresses. Downloaded a list of funded ETH addresses. Wrote the checker in ruby. Ran it. No hits but this was now definitely weirdly interesting.

Because: And what if I downloaded the whole pg19 text corpus to scan! And what if I'd add BTC addresses! And what if I checked every permutation of the seed phrase!

Everything got really slow once I got to processing 12G of raw text for finding sequences and then checking a few million candidates with 44.000+ variations per candidate.

So, let's rewrite this into C! And since I've got 16 cores, let's parallelize this puppy! And since it's a MacBook, let's use GCD! Optimize all the things!

Lol, so NOW this thing is so fucking FAST. Takes four minutes to go through the full pg19 corpus and generates 64,205,390 "interesting" seed phrases. The fully parallelized checker (see Terminal screenshot) processes 460 derived addresses per second.

I really don't care if I get a match or not. I feel like I started with building a canoo and wound up with a spaceship is in itself just the best thing in the world.

Anyways. Just wanted to share this. If anyone wants, I can put the whole thing on github, too. Let me know!

Image from the post
25 views

“As I was floating on the surface, I realized something: When the turtle was swimming, it linked its movements to the movements of the water. When a wave was coming at him, he would float, and paddle just enough to hold his position. When the pull of the wave was from behind him though, he’d paddle faster, so that he was using the movement of the water to his advantage. The turtle never fought the waves. Instead, he used them.”

A notion from "The Cafe on the Edge Of the World" that I remembered (and found the actual quote thanks to a quick @ChatGPTapp deep research) - Cover from The Orb's "Auntie Aubrey's Excursions Beyond The Call Of Duty - The Orb Remix Project - Part 1"

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1 repost · 6 likes · 1.2K views

Just made myself an early Xmas present :)

Quoting @s8mb · Nov 21, 2025

The first print issue of Works In Progress is landing on people's doorsteps today!

Over the next week or so, our thousands of subscribers, everywhere from Alaska to Australia, should be receiving their first copy. We are trying to make the most beautiful physical magazine on the planet, and I am very excited about how we've started.

This issue has pieces on inflatable space stations (which you can read online today – t.co/kP1F46xUtO), the war between the Swiss and Japanese watch industries, the "great downzoning" in the world's cities, and on whether Ancient Greek and Roman statues were really painted as badly as museums claim (perhaps not). And much more.

I hope you all enjoy it! And if you'd like to get a copy of this edition, you can subscribe here and you'll be sent this most recent copy, along with the rest of your year's subscription as it comes out: t.co/hfTpdnnVjF

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3 likes · 117 views

If you're in London on December 4th, do go here:

Quoting @Ananyo · Nov 27, 2025

Seventy years after John von Neumann’s essay “Can We Survive Technology?”, the questions he posed feel more urgent than ever.
On Thursday 4 December, I'm chairing an expert panel discussion at the Hungarian Embassy in London on what that essay means to us now. You're invited! t.co/AW7kL60SaH

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