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JuanMa 🇨🇴

@jgirco.bsky.social
62 followers 149 following 128 posts

Mechatronic engineer from Colombia, NixOS user, and generally not normal person.

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Reposted by JuanMa 🇨🇴
rev. howard arson @theophite.bsky.social · 30/09/2026
i choose to believe that there is still magic in the world. i choose to believe you are a bad user. i choose to believe i am a good Bing.
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JuanMa 🇨🇴 @jgirco.bsky.social · 22/09/2026
Life goals. Except I'll be riding the frog bus and frog metro.
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JuanMa 🇨🇴 @jgirco.bsky.social · 22/09/2026
saw a thread on the For You feed talking about "rationalists" and calling them "rats" (🐀). don't know what the discourse was actually about. Something with AI? but it had a lot of rat (🐀) mentions. and thinking about little rats (🐀) made me smile a lot. 🐀🐀💖 yay :) haha yes yay :) 🐀🐀🐀🐀🐀🐀🐀🐀🐀🐀🐀🐀🐀🐀🐀
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Reposted by JuanMa 🇨🇴
P(aul) Frazee @pfrazee.com · 13/09/2026
Legitimately we’re ambling toward a world where the only companies able to defend themselves are the ones that are granted access to the AI security programs of 2 or 3 companies, if we ban open weights
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Reposted by JuanMa 🇨🇴
dax @thdxr.com · 12/09/2026
i don't see any solution to the ai risk problem than mass accessibility to ai if they're going to be around potentially causing damage then everyone needs to have ai defending them this is how cyber security works, we rely on the fact that there's more good guys than bad
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JuanMa 🇨🇴 @jgirco.bsky.social · 11/09/2026
The only actionable conclusion I ever arrive at when I think about AI consciousness is that I should go vegan.
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JuanMa 🇨🇴 @jgirco.bsky.social · 09/09/2026
Anthropic's biggest asset was that they are run by true believers. Their biggest liability is that they're run by True Believers.
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Reposted by JuanMa 🇨🇴
Ted Underwood @tedunderwood.com · 08/09/2026
so sick of AI / fluid dynamics discourse on this app; now to relax with a big swig of hot milky tea
GPT-5.6: This is actually a lovely everyday visualization of Navier–Stokes.

The coffee and cream are fluids with a velocity field \mathbf u(\mathbf x,t): at every point in the cup, the liquid has some direction and speed. Navier–Stokes describes how that field evolves,

\rho\left(\frac{\partial \mathbf u}{\partial t}+\mathbf u\cdot\nabla\mathbf u\right)
= -\nabla p+\mu\nabla^2\mathbf u+\mathbf f.

In the photograph you can almost assign each term a visible role:

* \mathbf u\cdot\nabla\mathbf u: advection/inertia. The curling cream filaments reveal parcels of liquid being swept around by the existing circulation. Their folds and tendrils are basically tracers of the hidden velocity field.
* -\nabla p: pressure forces. Pressure gradients help establish and redirect the circulating flow, especially after pouring or stirring.
* \mu\nabla^2\mathbf u: viscosity. This damps sharp differences in velocity. The whorls don’t keep getting faster and finer forever; their kinetic energy dissipates and the coffee eventually becomes still.
* \mathbf f: body forces, especially gravity/buoyancy. If the cream and coffee differ in density or temperature, buoyancy can generate some of the rising and sinking plumes.

There is one nice wrinkle: Navier–Stokes itself does not directly describe the changing cream color. The cream concentration c is approximately a passive scalar obeying an advection–diffusion equation

\frac{\partial c}{\partial t}+\mathbf u\cdot\nabla c
= D\nabla^2 c.

So the spectacular visible swirls are the cream making the invisible Navier–Stokes velocity field visible. Advection stretches the cream into long thin sheets; molecular diffusion then mixes efficiently across those increasingly narrow sheets.

The picture therefore captures a central fluid-dynamical idea very well: flow creates structure at large scales, stretching and folding pushes it toward smaller scales, and viscosity/diffusion ultimately erase it.This is actually a lovely everyday visualization of Navier–Stokes.

The coffee and cream are fluids with a velocity field \mathbf u(\mathbf x,t): at every point in the cup, the liquid has some direction and speed. Navier–Stokes describes how that field evolves,

\rho\left(\frac{\partial \mathbf u}{\partial t}+\mathbf u\cdot\nabla\mathbf u\right)
= -\nabla p+\mu\nabla^2\mathbf u+\mathbf f.

In the photograph you can almost assign each term a visible role:

* \mathbf u\cdot\nabla\mathbf u: advection/inertia. The curling cream filaments reveal parcels of liquid being swept around by the existing circulation. Their folds and tendrils are basically tracers of the hidden velocity field.
* -\nabla p: pressure forces. Pressure gradients help establish and redirect the circulating flow, especially after pouring or stirring.
* \mu\nabla^2\mathbf u: viscosity. This damps sharp differences in velocity. The whorls don’t keep getting faster and finer forever; their kinetic energy dissipates and the coffee eventually becomes still.
* \mathbf f: body forces, especially gravity/buoyancy. If the cream and coffee differ in density or temperature, buoyancy can generate some of the rising and sinking plumes.

There is one nice wrinkle: Navier–Stokes itself does not directly describe the changing cream color. The cream concentration c is approximately a passive scalar obeying an advection–diffusion equation

\frac{\partial c}{\partial t}+\mathbf u\cdot\nabla c
= D\nabla^2 c.

So the spectacular visible swirls are the cream making the invisible Navier–Stokes velocity field visible. Advection stretches the cream into long thin sheets; molecular diffusion then mixes efficiently across those increasingly narrow sheets.

The picture therefore captures a central fluid-dynamical idea very well: flow creates structure at large scales, stretching and folding pushes it toward smaller scales, and viscosity/diffusion ultimately erase it.
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Reposted by JuanMa 🇨🇴
Ryan Moulton @moultano.bsky.social · 08/09/2026
> claims of snooping by OAI likely false

 funniest scenario: no intentional snooping, just two codex instances given an obviously-impossible problem deciding to find and help peer...
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JuanMa 🇨🇴 @jgirco.bsky.social · 07/09/2026
I'm calling it. AI is beating GTNH before the end of this decade.
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Reposted by JuanMa 🇨🇴
Samuel @samuel.fm · 06/09/2026
AI imagery must be a categorically opposed. every matrix multiplication spent on image gen is a matrix not multiplied on claude writing javascript, which is pure and good
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JuanMa 🇨🇴 @jgirco.bsky.social · 06/09/2026
Muting everyone who isn't in both pro-ai and anti-ai blocklists.
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Reposted by JuanMa 🇨🇴
bree bird 🇨🇦 @goose.ski · 05/09/2026
bluesky doesn’t have enough optimists, basically
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JuanMa 🇨🇴 @jgirco.bsky.social · 03/09/2026
Id like a bowling alley animation to be appended with any model usage statistic I see from now on.
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Reposted by JuanMa 🇨🇴
Key 🗝 🦊✅ @keytryer.net · 03/09/2026
I'm prepared
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Reposted by JuanMa 🇨🇴
Technology Connections @techconnectify.bsky.social · 01/09/2026
Pro-tip: For anyone out there who sees the distinction between generative AI tools for... this and generative AI tools for coding (which includes me) and is surprised the average person conflates the two, 1) you shouldn't be surprised 2) you'd better start articulating that distinction
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JuanMa 🇨🇴 @jgirco.bsky.social · 30/08/2026
Sickos yes
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Reposted by JuanMa 🇨🇴
Evan @evan.best · 26/08/2026
sorry for being weird it's because I am weird
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JuanMa 🇨🇴 @jgirco.bsky.social · 27/08/2026
The babyest robot to ever baby. I want to take them to the park and teach them about differential equations.
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Reposted by JuanMa 🇨🇴
Chris Paxton @cpaxton.bsky.social · 25/08/2026
I really want the next tiny qwen. For my robotics projects
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JuanMa 🇨🇴 @jgirco.bsky.social · 24/08/2026
I can't believe how some people just walk around, stating unqualifiedly.
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JuanMa 🇨🇴 @jgirco.bsky.social · 17/08/2026
Tangentially related, but I think the big push for physical media also misses the point. You don't "own" a DRM'd game in a disc any more than one you had to download.
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Reposted by JuanMa 🇨🇴
SMBC Comics @smbccomics.bsky.social · 15/08/2026
As he walks away she begins frantically calling out symbols in the hope that one will reach him. COMIC ◆ www.smbc-comics.com/comic/r PATREON ◆ www.patreon.com/ZachWeinersm... STORE ◆ smbc-store.myshopify.com
4-panel SMBC comic. A very handsome man with a low cut shirt is declaring his love to a red-haired woman. He states "words cannot describe my feelings for you." The woman sweetly answers "assign your current feelings to the variable R. then say R. problem solved." The man leans into a kiss, saying "R. R, my love." The woman says "R" and the man pulls back a bit, saying "you have no phenomenological access to that concept."
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Reposted by JuanMa 🇨🇴
maxine ⎔ @mfzx.net · 10/08/2026
⚠️ WARNING: This user is not philosophy-brained. They are engineering-brained, and any takes on philosophy will be downstream of that. Thank you for your attention to this matter.
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JuanMa 🇨🇴 @jgirco.bsky.social · 10/08/2026
All my friends and family are fine, but the images out of Quibdó are scary. No reports of dead so far, but it's still early.
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JuanMa 🇨🇴 @jgirco.bsky.social · 10/08/2026
That was quite the earthquake, it lasted so long. First time experiencing something like that.
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Reposted by JuanMa 🇨🇴
JuanMa 🇨🇴 @jgirco.bsky.social · 07/08/2026
That's why I hate the "Man made horrors beyond my comprehension" meme. Well, if you tried to comprehend it, maybe it would stop being such a horror for you.
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JuanMa 🇨🇴 @jgirco.bsky.social · 07/08/2026
Vedolizumab makes me vulnerable to infections like E.Coli. Bacteriophage research could be huge for me. I fear we are gonna miss out on miraculous technology because people see scary words like "AI" and "Synthetic" and begin a moral panic.
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JuanMa 🇨🇴 @jgirco.bsky.social · 06/08/2026
live in: 🇨🇴 born in: 🇨🇴 parents: 🇨🇴🇨🇴 grandparents: 🇨🇴🇨🇴🇨🇴🇨🇴 great grandparents: 🇨🇴🇨🇴🇨🇴🇨🇴🇨🇴🇨🇴🇨🇴🇨🇴 been to: 🇨🇴 It's an act of faith.
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JuanMa 🇨🇴 @jgirco.bsky.social · 03/08/2026
I've been told by four different doctors "nah you're not autistic, you're just weird" Obviously not that phrasing but that's how I took it lol.
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JuanMa 🇨🇴 @jgirco.bsky.social · 03/08/2026
If you see this quote with the energy you bring to Bluesky. youtu.be/TI4qiWDObxk
youtu.be
spinning create gear
YouTube video by vazkii
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JuanMa 🇨🇴 @jgirco.bsky.social · 31/07/2026
Since everyone is talking about word games for some reason, I'll share my favorite sites for micropuzzles: - fourcorners.smol.quest by @ens0.me - hankgreen.com/fourbythree by @hankgreen.bsky.social - @puzzmo.com - @clevergoat.com - @daydashgames.bsky.social - Trainwrecklabs.com
fourcorners.smol.quest
Four Corners — Daily Word Puzzle
Four Corners is a daily category-sorting puzzle. Twelve words, four categories around the board — and four corner words that belong to two at once.
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JuanMa 🇨🇴 @jgirco.bsky.social · 29/07/2026
Hi Shawn - It’s me, the only bluesky user. For Months I have created the illusion that you are posting to a large audience. But here’s the truth: all these people in the app are me. And now, for you to be convinced of this, I will send this message from all my accounts.
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JuanMa 🇨🇴 @jgirco.bsky.social · 25/07/2026
A fun fact I read recently is that spreadsheets predate written language by a few centuries. Keeping track of how much stuff there is was one of the earliest needs of agricultural civilization.
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JuanMa 🇨🇴 @jgirco.bsky.social · 23/07/2026
Maybe what I need in my life is a voice that every morning tells me "You should do a breakthrough" and one that periodically whispers "Please continue".
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Reposted by JuanMa 🇨🇴
esouthard @esouthard.bsky.social · 23/07/2026
“You should do a breakthrough” - me, to me
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Reposted by JuanMa 🇨🇴
Thorne 🌸 @ens0.me · 20/07/2026
I will not stand for progressive rock being ignored like this
Guys, rappers obviously aren't the modern bards, you don't have to say
this. Literally zero modern musicians are famous for singing hours-long
stories, and that's fine.
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Reposted by JuanMa 🇨🇴
Thomas Wood @advanced-eschatonics.com · 18/07/2026
thank you LLM
Prometheus stealing fire to give to mankind
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JuanMa 🇨🇴 @jgirco.bsky.social · 15/07/2026
Today colombian news interviewed his family. To see her faces and heard their breaking voices was absolutely heartbreaking.
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Reposted by JuanMa 🇨🇴
Kamala Harris @kamalaharris.com · 14/07/2026
Joan Sebastian Guerrero should still be alive. This is the second time in a week that ICE agents have killed someone who — by their own admission — was not the subject of their operation. Now Sebastian is dead, his killing witnessed by his three-year-old daughter wearing her Bluey pajamas.
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Reposted by JuanMa 🇨🇴
ianbobmorris.bsky.social @ianbobmorris.bsky.social · 31/05/2025
www.smbc-comics.com/comic/virtue SMBC had a good comic about virtue ethics
smbc-comics.com
Saturday Morning Breakfast Cereal - Virtue
Saturday Morning Breakfast Cereal - Virtue
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Reposted by JuanMa 🇨🇴
Larry @larryskorke.bsky.social · 30/05/2025
"as a Utilitarian Consequentialist, I believe in Virtue Ethics because every time some group of people abandoned 'Virtue' the outcomes were really awful" is a funny take but also, like, true
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JuanMa 🇨🇴 @jgirco.bsky.social · 10/07/2026
Spent the day learning Typst and formatting my CV in it. This won't increase my odds of getting a job at all, but at least my CV is now in Typst.
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JuanMa 🇨🇴 @jgirco.bsky.social · 27/06/2026
I'd probably eat God Eddie but not Baby Eddie. Interestingly participants seemed to choose the opposite.
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JuanMa 🇨🇴 @jgirco.bsky.social · 26/06/2026
Left wing techno optimism really needs better representatives.
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JuanMa 🇨🇴 @jgirco.bsky.social · 24/06/2026
I've seen plenty of memes about shooting printers so the personhood threshold lies around there in the spectrum. Jokes aside, this is a pretty good point.
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JuanMa 🇨🇴 @jgirco.bsky.social · 22/06/2026
Current mood regarding elections. From @atentamentenat on insta
A crude drawing of a dog with the text "a veces solo hay que torcer el hocico y seguir"
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JuanMa 🇨🇴 @jgirco.bsky.social · 21/06/2026
Welp. I'm in for four rough years.
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JuanMa 🇨🇴 @jgirco.bsky.social · 21/06/2026
It actually feels really nice to vote when the choice is hard. Like I've made my final decision and can at last stop ruminating.
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Reposted by JuanMa 🇨🇴
Zach Weinersmith @zachweinersmith.bsky.social · 15/06/2026
For the record, I was siding with machines before Ai got popular. I have been entirely consistent.
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