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Paulo Cesar Siqueira, PhD

@pcsiqueira.academics.blue
220 followers 83 following 1.3K posts

Assistant Professor at UFRRJ. Speech-language pathologist in Rio de Janeiro. Computational chemist specializing in inorganic chemistry and photochemistry. Blues player. Please don't claim autism without a formal diagnosis. #AutismAlly 📍 🇧🇷 🇺🇸

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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 16/10/2026
Walter Russell
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 29/09/2026
The AI trolley problem.
A cartoon of a trolley in front of a switch that goes either to 1 or 5 people tied on the tracks and two people looking at it and saying: “Luckily, the A.I. trolley will decide who to kill all on its own” - made by Paul North for The New Yorker
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 29/09/2026
Kindness is punk.
White background with a pinkish rabbit drawn holding a flag that says "Being kind is punk."  The rabbit wears a big spiked pink collar.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 16/09/2026
My response was hidden. The truth is hidden, even when expressed responsibly and politely.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 04/09/2026
Sim, mas isso evidentemente serve para ambos os lados. Realmente não caberia em 300 caracteres. Contudo, o print resume muito bem. Só não me venha dizer que o Bob's faz menos mal à saúde, por favor...
Private messages can be read.

Your personal data is used for automated decision-making, profiling or AI training.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 15/08/2026
Quer um conselho? Então veja e, inteligente como você é, analise por si mesmo:
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 28/07/2026
By the way, your email account—and those of dozens of other users—are publicly available on the Internet. Do you think that’s right? It might not apply to you, but many people registered their private email addresses.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 23/07/2026
Não é só complexidade desnecessária, mas esses rótulos também são bem questionáveis, tanto os do Bluesky quanto os de terceiros. Eu os assinei mais por curiosidade. Observe uma das respostas oculta. (1)
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 16/07/2026
It’s the signal of a wider intelligence, one that doesn’t need to add but to take away. Learning to function better, it seems, is not a conquest towards the outside. It’s a return home.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 09/07/2026
When someone asks you to explain non-binary gender:
Q from Star Trek saying to Picard and a group of officers, "Not a he, not a she, not like anything you've ever seen before. An enhanced humanoid."
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 03/07/2026
My nephew ;)
Photo of a beautiful sunset.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 14/06/2026
Werner Bischof, A woman stands with a bouquet of flowers and her child. Mexico (1954):
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 07/06/2026
Post blocked, of course. There's no arguing with the truth.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 05/06/2026
It seems the Albanians don't want Jared and Ivanka Kushner to build Epstein Island 2.0...🫡
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 04/06/2026
Two paramedics from the Al-Risala Association, Hassan Ali Mohammad and Mohammad Qassem al-Laqis, were killed in a deliberate Israeli attack on their ambulance while performing their humanitarian duty in the southern Lebanese town of Shhour. (Source: The Cradle)
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 04/06/2026
Schalcken the Painter (1979) «Trappings that are ornate and lovely, and yet set in a darkness that the faltering lamp or candle flame never capable of penetrating.»
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 31/05/2026
Reposting my own posts...
I'm reposting my own posts...
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 12/05/2026
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 09/05/2026
YOLO BUYING THE DIP
Shopping cart full of Ypê detergente.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 02/05/2026
Foi só eu falar... 😅 Os outros dois perfis variam bastante, mas o seu me é sugerido de forma muito recorrente (quase diariamente). Poucos seguidores em comum (apenas três). Acho curioso...
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 02/05/2026
São Carlos? Não... 🤔 Perguntei porque toda vez que acesso alguns perfis, os algoritmos me sugerem algumas contas recorrentemente. E a sua me é sugerida com muita frequencia. Acho curioso...
Os algoritmos do Bluesky sugerindo-me seguir uma usuária de nome Victoria com bastante frequencia...
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 28/04/2026
Four medieval illustrations showing people with trumpets in their butt.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 17/04/2026
Nada... Já está fixado e o botão de curtir simplesmente não aparece para mim. Eu até mudei o idioma do app para o inglês, mas nada funciona. Aliás, essa é a tela que vejo:
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 14/04/2026
Hey, Orbán
My hand holding The Chat's "GET FUCKED" 12-inch
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 07/04/2026
Yes, these are underlying medications. There are no medications for autism itself. They treat the symptoms.
Autism.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 07/04/2026
Prescribe for real autism.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 23/03/2026
I wrote this. I'm not sorry.
JavaScript code that has deeply nested map/reduce/filter/sort chains.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 19/03/2026
Querido, cinquenta anos de docência por aqui. "De acordo com" a norma culta (onde e quando queira pesquisar), não existe a palavra "gênia" [sic]. Como a IA está muito em voga hodiernamente, prefiro deixar que ela ensine aos tolos:
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 23/02/2026
Picked this up. (1st Edition!) at a used bookshop this weekend. Looking forward to reading it!
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 05/01/2026
Nice.
Screenshot of part of my Last.fm Playback 2025:
"Your favourite track this year was Low I.Q by Ghoulies. You scrobbled it 69 times, putting you in the top 0.19% of fans worldwide"
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 22/11/2025
Sunset at the beach with some very dramatic clouds. There is a volleyball net on the beach.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 15/11/2025
A screenshot with two posts from another microblog/social network. Julia Turc suggests: “We need an official name for not-vibe-coding. My top candidates so far — boomer coding, chewgy coding, trad coding, Coding with capital C — suggestions are welcomed. Gabor Varadi replies: “software engineering”
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 29/10/2025
Eu ainda sou professor, aos 66 anos. E se leu, não soube interpretar. Então, deixo o print para que releia novamente, quantas vezes necessário. Área de computação. E da próxima vez, procure não interpretar tudo da pior forma possível. Você consegue. A Internet costuma fazer isso com as pessoas...
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 15/10/2025
Das duas uma, ou estava e você removeu (opção mais provável) ou muito estranhamente me equivoquei (o que eu particularmente não acredito). De todo modo (e desta vez fiz questão de tirar o print), a Gabi está, e eu a conheço pessoalmente, foi inclusive minha ex-aluna na USP e *odeia* o Bolsonaro.
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Paulo Cesar Siqueira, PhD @pcsiqueira.academics.blue · 30/09/2025
Link completo da thread: bsky.app/profile/just... Print anexo.
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