Rafael Ferreira's Avatar

Rafael Ferreira

@rff

412
Followers
747
Following
300
Posts
25.07.2023
Joined
Posts Following

Latest posts by Rafael Ferreira @rff

i am genuinely astonished by how this guy speaks exclusively in cliches

13.03.2026 15:24 👍 5849 🔁 735 💬 509 📌 1

One more time — I'm looking for new consulting clients.

Some ways I can help:

∙ Fractional tech leadership (tackling "leadership debt" in small eng orgs)
∙ Full-stack, 0 to 1 projects
∙ Language design & impl (eg with @ohmjs.org)
∙ JavaScript/TypeScript perf

(🔁 appreciated)

13.03.2026 15:25 👍 6 🔁 12 💬 0 📌 0
Post image

macOS already ships age verification

11.03.2026 13:22 👍 621 🔁 104 💬 7 📌 5

No no no! The president is simply entirely convinced that, if he eliminates the existing leadership of a country, the people left over will come to him, tears in their eyes, begging like a dog, and say "Sir, please, who should rule our country?" He thinks he's cut the gordian knot of geopolitics.

11.03.2026 01:10 👍 595 🔁 62 💬 10 📌 3

One of the things that really trips a lot of analysts, including ones with real skin in the game, is that they refuse - absolutely refuse - to accept how stupid Trump very obviously is. He has no knowledge of anything, is incapable of learning, and only remembers the last thing to happen to him.

11.03.2026 00:56 👍 2967 🔁 663 💬 59 📌 47

Mathematicians have by far the best, most mature, least insane reaction to LLMs showing up.

Honestly, I don't think there's any field of study that adapts better to major IT advances than mathematicians.

11.03.2026 00:47 👍 53 🔁 7 💬 3 📌 2
Post image

Nicholas Carlini at [un]prompted. If you know Carlini, you know this is a startling claim.

04.03.2026 17:46 👍 26 🔁 3 💬 1 📌 1

Rest in peace

10.03.2026 18:39 👍 0 🔁 0 💬 0 📌 0

Lovely anecdote about sir Tony Hoare skipping work to catch a film at the cinema.

10.03.2026 18:39 👍 4 🔁 1 💬 1 📌 0

This is the heart of the problem. "Ultra-processed" foods are considered unhealthy due to their chemical additives or their calorie density but neither of those have anything to do with "processing"!

This is just the word people use to talk about foods they don't like. Scientists should do better.

10.03.2026 14:20 👍 585 🔁 61 💬 20 📌 5

in case you've never seen it, this is Roger Ebert on The Mummy

10.03.2026 14:02 👍 13832 🔁 3159 💬 91 📌 236

This was a great interview. Even assuming that the energy transition succeeds, there are enormous challenges in gracefully decommissioning the old infrastructure.

10.03.2026 08:25 👍 33 🔁 4 💬 2 📌 1

I'm not sure if the average Dem or even the average climate type has really caught on to the fact that ALL the big money guys in DC are absolutely banking on a huge renaissance of natural gas demand. They are looking at more gas, more pipelines, more more more, with no upper limit. They're giddy.

10.03.2026 00:13 👍 331 🔁 83 💬 16 📌 7

Trump did not announce a U.S. policy then walk it back. That is not what happened, and media presenting it that way does a disservice.

Trump said words he thought might appeal to his audience in the moment, with no connection to actual policy, then did that again with a different question/asker.

09.03.2026 23:20 👍 2807 🔁 770 💬 73 📌 29

Even among his haters there’s a kind of mythology around Trump that unfortunately still makes him seem more impressive than he actually is. I think it’s understandably hard to grasp just how stupid this is

09.03.2026 13:49 👍 722 🔁 66 💬 14 📌 3

I don’t think Trump and his people are capable of engineering “distractions,” I think the mind-numbing chaos we see every day is straightforwardly the result of giving the dumbest, cruelest, most corrupt, most selfish people of a generation near-unmitigated power

09.03.2026 13:48 👍 5245 🔁 1284 💬 95 📌 63
Foto de tela de celular mostrando um push do banco Inter com a mensagem:

Última chance! 
Garanta agora o maior desconto do ano com seu cu...

Foto de tela de celular mostrando um push do banco Inter com a mensagem: Última chance! Garanta agora o maior desconto do ano com seu cu...

Calma lá banco Inter 😶

08.03.2026 13:47 👍 276 🔁 45 💬 9 📌 7

Lots of folks cling to the idea that this comes down to Biden's inability to "sell" these accomplishments. I'm sorry, though, that's pure cope. Whiny resentfulness toward Dems & cities is *constitutive* of the RW worldview today, not something that can be turned on & off with policy.

07.03.2026 21:59 👍 284 🔁 43 💬 18 📌 4

This is brought to you by Pending™ — the productivity app for things you’re definitely doing later. Wink.

Based on our patented Emotionally Acknowledged but Logistically Deferred™ queue.

08.03.2026 01:03 👍 101 🔁 14 💬 4 📌 1
Wait for them to calm down -> They're not calming down

Wait for them to calm down -> They're not calming down

US strategic analysis of Iran:

07.03.2026 17:19 👍 1121 🔁 177 💬 6 📌 1
Caitlin KALINOWSKI over X

I resigned from OpenAl. I care deeply about the Robotics team and the work we built together.
This wasn't an easy call. Al has an important role in national security. But surveillance of Americans without judicial oversight and lethal autonomy without human authorization are lines that deserved more deliberation than they got. This was about principle, not people. I have deep respect for Sam and the team, and I'm proud of what we built together.

Caitlin KALINOWSKI over X I resigned from OpenAl. I care deeply about the Robotics team and the work we built together. This wasn't an easy call. Al has an important role in national security. But surveillance of Americans without judicial oversight and lethal autonomy without human authorization are lines that deserved more deliberation than they got. This was about principle, not people. I have deep respect for Sam and the team, and I'm proud of what we built together.

OpenAI head of robotics just resigned over company deal with the Pentagon saying…

“Surveillance of Americans without judicial oversight and lethal autonomy without human authorization are lines that deserved more deliberation than they got”

07.03.2026 19:05 👍 7142 🔁 2666 💬 141 📌 210

I lack the words to capture it, but ... it's just endlessly remarkable to me that so many people in our society have chosen trans kis -- TRANS KIDS, the smallest, least significant, most vulnerable demographic slice you could possibly pick -- as a repository for all their fears & insecurities.

06.03.2026 19:57 👍 2818 🔁 680 💬 70 📌 46

It's funny communicating with coworkers when we're both using AI to rewrite the content. Definitely a "my lawyer will talk to your lawyer" vibe.

I guess at some point we can just have our AI agents argue it out and wait for the conclusion.

06.03.2026 23:37 👍 45 🔁 2 💬 7 📌 0
screenshot of the one-pager version of the servo readiness report

screenshot of the one-pager version of the servo readiness report

How do we get to more than just three web engines owned by three US companies?

It's a gargantuan question, with no easy or right answer.

I've put together a draft report, thinking about it through a very specific approach - please enjoy:

Servo Readiness Report

webtransitions.org/servo-readin...

06.03.2026 14:35 👍 60 🔁 26 💬 4 📌 1
Video thumbnail

Cool to see the new Rivr robot. They were prototyping based off of Swiss mile dogs before, much more similar to the Unitree dogs we have seen so much of. But now they have custom hardware which seems to make much more sense for package delivery.

07.03.2026 13:37 👍 25 🔁 3 💬 0 📌 2

"We can be as shitty as we want but you have to treat us fairly, because you said you care about fairness."

They are all 12yo boys.

06.03.2026 19:48 👍 351 🔁 53 💬 11 📌 1

having used claude extensively for the past couple of months, i think there is still a lot of value to understanding your code and steering it intentionally. the amount of incidental complexity claude accumulates otherwise (which mostly results in bugs that it can't ever fix reliably) is staggering.

07.03.2026 03:00 👍 590 🔁 65 💬 30 📌 13

Whew, economic anxiety must be real bad down there!

05.03.2026 05:16 👍 241 🔁 27 💬 0 📌 1

> git pull
Already up to date.

> git push
Everything up-to-date

I wish I hadn't noticed that these were formatted differently. I hope I can forget before it destroys me

05.03.2026 05:28 👍 141 🔁 14 💬 11 📌 1