Alejandro García Serna

Colombian Software engineer living in Barcelona | mentor at @CYF_CO

Trust the plan

[Atlético de Madrid @Atleti]

No, el Atlético de Madrid nunca haría algo así. Sin embargo, en los últimos meses venimos sufriendo una campaña de acoso y derribo sobre uno de nuestros jugadores. Filtraciones interesadas, 'fake news', faltas continuas de respeto, la versión culé de la maquinaria inventando historietas, llamadas antes de enfrentamientos directos... Pero claro, a nosotros tampoco se nos ocurriría tener a sueldo al vicepresidente de los árbitros o recurrir a favores políticos para inscribir a jugadores. RESPETO y VALORES.

[Alejandro García Serna @alejogs4]

@santb__ Tu historia de vida

[Charlie L ⚡️ @charliesbot]

Lectura para el fin de semana: “La guía completa de para construir SKILLs para Claude”

Es una guía oficial de @claudeai con muchísimos detalles e instrucciones para tener tu AI setup al 100 y construir SKILLs efectivos para tu día a día

Y es gratis

[Anders K. Hvelplund @Falliblemusings]

I used to think Sapiens was a great book. Sweeping, provocative, the kind of book that makes you feel like you finally understand the big picture of human history. It's on every CEO's bookshelf, assigned in universities, praised as a masterwork of synthesis. Yuval Noah Harari is treated as one of the serious thinkers of our time.

But something nagged at me. Some passages felt off. Claims that human rights are just figments of our collective imagination, not real things, just stories we tell ourselves. That nations, laws, money, justice, doesn't exist outside our heads. That meaning itself is a delusion we've invented to cope. That we're far more powerful than ever before but not happier. That hunter-gatherers had it better because they had no dishes to wash, no carpets to vacuum, no nappies to change, no bills to pay.

That sounded depressing to me, but was perhaps just the realistic scientific worldview? What it meant to see the world clearly, without comforting illusions.

Then I read The Beginning of Infinity by @DavidDeutschOxf. Deutsch has a concept he calls 'bad philosophy.' Not philosophy that's merely false, but philosophy that actively prevents the growth of knowledge. Ideas that close doors rather than open them. That makes problems seem unsolvable by design.
After soaking in Deutsch's framework (it's dense, a bit like digesting a delicious whale), it becomes clear: Harari's books are riddled with bad philosophy. They're smuggling nihilism in under the guise of scientific objectivity. Some examples:

On meaning: "Human life has absolutely no meaning. Humans are the outcome of blind evolutionary processes that operate without goal or purpose... any meaning that people inscribe to their lives is just a delusion."

On human rights: "There are no gods in the universe, no nations, no money, no human rights, no laws, and no justice outside the common imagination of human beings."

On free will: "Humans are now hackable animals. The idea that humans have this soul or spirit and they have free will, that's over."

On progress: "We thought we were saving time; instead we revved up the treadmill of life to ten times its former speed." The Agricultural Revolution? "History's biggest fraud." We didn't domesticate wheat, "it domesticated us."

On our cosmic significance: "If planet Earth were to blow up tomorrow morning, the universe would probably keep going about its business as usual. Human subjectivity would not be missed."

On the future: "Those who fail in the struggle against irrelevance would constitute a new 'useless class.'" Homo sapiens will likely "disappear in a century or two."

This is bad philosophy. It tells us our problems are cosmically insignificant, our solutions are illusions, and that progress is neither desirable nor within our control. It's also perfect nonsense. No one would ever go back to being hunter-gatherers. Would you rather worry about your kid spending too much time on Roblox, or face the 50% chance she won't reach puberty?

And our so-called "fictions"? They ended slavery. They gave women equal rights. They solved hunger. They eradicated smallpox. They turned sand into computer chips. They got us to the moon, and hopefully soon, to Mars and beyond. These "fictions" are already reshaping the universe, and over time they may become the most potent force in it.

Now compare Deutsch:
"Humans, people and knowledge are not only objectively significant: they are by far the most significant phenomena in nature."

"Feeling insignificant because the universe is large has exactly the same logic as feeling inadequate for not being a cow."

"Problems are soluble, and each particular evil is a problem that can be solved."

"We are only just scratching the surface, and shall never be doing anything else. If unlimited progress really is going to happen, not only are we now at almost the very beginning of it, we always shall be."

Where Harari sees a species of deluded apes stumbling toward obsolescence, Deutsch sees universal explainers, the only entities we know of capable of creating explanatory knowledge, solving problems, and potentially seeding the universe with intelligence.

The difference isn't academic. Ideas shape action. If you believe life is meaningless, progress is a trap, and humans are hackable animals with no free will, how does that affect what you build? What you fight for? What you teach your children?

Harari's books sell because they flatter a fashionable pessimism. They let readers feel sophisticated for seeing through the "delusions" everyone else lives by. That smug cynicism is corrosive. And it's everywhere: in schools, in media, in bestselling books. More than half of young adults now say they feel little to no purpose or meaning in life. This is what happens when you teach an entire generation bad philosophy. Less progress, less health, less wealth. Less flourishing. And ultimately, a higher chance that civilization and consciousness go extinct.

Fortunately, there's another equally well-written, but much truer, account of homo sapiens, appropriately titled 'The Beginning of Infinity'. And this one smuggles no despair in by the backdoor. But let's give Harari credit where it's due. He is right about one thing: if planet Earth blew up tomorrow, we wouldn't be missed. Because there'd be no one left to miss us, just a careless universe, blindly obeying physical laws. We are the only ones who can miss, but we're not going to. We're going to aim, hit, and keep going.

Full credit for the amazing meme to @Ben__Jeff

[Alejandro García Serna @alejogs4]

Context is (was always) the king https://t.co/9WWtds8gvB

[Invictos @InvictosSomos]

¡¡COLOMBIA Y PORTUGAL SE ENFRENTARÁN EN EL GRUPO K DEL MUNDIAL 2026!! ¡¡DUELAZO ENTRE LA SELECCIÓN DE CRISTIANO RONALDO Y LA SELECCIÓN DE JAMES RODRÍGUEZ!! ¡¡SHOW GARANTIZADO!!

[david fant @da_fant]

i was fired from @OpenAI today

if you're looking for an expert in model naming, DMs are open

[positivity moon @arrtnem]

Not the way love is supposed to mean safety. Not the way love is supposed to mean “your nervous system is my responsibility too.” You can call what they felt desire, attachment, habit, fear, obsession, trauma-bond, but you cannot look at betrayal and label it love without lying to your own body.

Cheating is not a lightning strike. It is a staircase. There is the first message they did not need to answer. The second look they let linger. The notification they turned face down on the table. The story they told themselves in the shower - “it is harmless”, “it is nothing”, “I am just bored” - while somewhere in another room your toothbrush stood next to theirs like a very small witness. Every step was a choice. Every choice was a vote. None of those votes were for you.

People will say “they loved you, they just made a mistake.” A mistake is spilling coffee on your shirt because your hand shook. Cheating is picking the cup up, walking it across the room, and pouring it slowly on somebody’s shirt, then telling them they should not be so sensitive about stains. It is not clumsiness. It is convenience wearing your name like a discount tag.

If they loved you, really loved you, your body would not have learned betrayal from their hands. Love does not teach your jaw to clench when a phone lights up across the table. Love does not train your lungs to hold half a breath every time they say “I will be home late.” Love does not make you an unpaid detective, reading receipts like runes, staying up at 2:19 putting pins in a map of their lies. Love does not make you feel crazy for asking questions your gut already answered.

The person who cheats is not a monster. That is the problem. They are just a human who decided their urge mattered more than your reality. They wanted the high of being wanted without the weight of being responsible. They did not walk into a storm for you. They left you standing alone in the rain and called it “complicated.” That is not love. Love is not scared of boredom. Love is not allergic to the slow parts. Love does not need a side stage to feel alive.

Real love gets tempted too. Let us be honest. There will always be someone charming at 11:47 on a Thursday with a drink in their hand and an easy laugh. Real love feels the pull, sees the cliff, and steps back. Real love sends the message “I have someone” and means it. Real love blocks the number because “I am drunk” is not a good enough reason to gamble your heart. Real love comes home with a stupid story about karaoke and fries, not a ghost in its pocket.

If they loved you, the thought of you finding out would hurt them more than the thrill helps them. If they loved you, your face would come up before their fantasy, not after it. If they loved you, they would drag their own shadow into the light and say “I am restless, I am scared, I am not okay, can we talk” instead of going to another body to avoid their own reflection. Love chooses the hard conversation at 23:06 in the kitchen over the easy secret at someone else’s address.

You can feel something intense for a person and still not love them. You can miss them, crave them, ache for them, and still not love them. Love is not the size of emotion. It is the shape of behavior. Cheating is a shape that does not fit inside love. It fits inside hunger, ego, cowardice, unfinished grief. It fits inside the need to prove “I still have it” at the cost of “we still have us.” That is not neutral. That is extraction.

Here is the part that cuts: if they cheated, believe the data. Do not rebrand it. Do not say “deep down they loved me.” Deep down is not where your nervous system lives. You sleep in the shallow end. You wake in the shallow end. Your nightmares happen at the surface. You deserve a love that is honest there too. You deserve a person whose mouth and phone and body are on the same side as your nervous system.

[Revista La Liga @REVISTA_LALIGA]

La nueva camiseta de la Selección Colombia está inspirada en las mariposas amarillas del realismo mágico.

Ojalá sea el presagio de un equipo tan exitoso como "Cien años de soledad", la obra cumbre de este movimiento literario.

[Real Madrid C.F. @realmadrid]

SOY LUCHA.
SOY BELLEZA.

[Real Madrid C.F. @realmadrid]

🏁 FP: @RealMadrid 2-1 @FCBarcelona_es
⚽ 22' @KMbappe
⚽ 38' Fermín
⚽ 43' @BellinghamJude
👉 @Emirates

[Víctor Abad @victorabadf1]

Solo él podrá salvar este deporte.

[Invictos @InvictosSomos]

Nos mandaron a dormir.

[ÉPICOS @EpicosTweets]

@FCFSeleccionCol HAGAN HISTORIA Y DESCONGELENSE ESE PECHO

NADIE CREE EN USTEDES, HAGANOS SABER QUE ESTAMOS EQUIVOCADOS

[Telemadrid @telemadrid]

Los Reyes ponen fin a su viaje de Estado a Egipto. Don Felipe y Doña Letizia visitan dos de las excavaciones que arqueólogos españoles están llevando a cabo en el Valle de los Reyes de Luxor.

📌Más información: https://t.co/DS54kBuMVP
En @BuenosDiasTM en 📡DIRECTO: https://t.co/HR30HXIzVt

[Logan Kilpatrick @OfficialLoganK]

Video overviews in @NotebookLM have started to roll out, taking us 1 step closer to the world of infinite content repurposing , reformatting, and reimagining.

Excited for Veo 3 to become part of this too :)

[Rorin @rorintv]

Isaac Asimov falló a la hora de preveer esto en las leyes de la robótica.

[Tendencias @TTendenciaX]

"Conejos":
Por estos conejitos que se pusieron a saltar arriba de un trampolín.

[WarrenBuffering @WarrenInTheBuff]

friendly reminder relational databases shouldn't have JSON in them

[ℏεsam @Hesamation]

please don’t hallucinate bro they got my family 😭