Elizabeth Haze

[Noticias ONU @NoticiasONU]

🔴URGENTE. La Asamblea General de la ONU aprueba, por 34ª ocasión, una resolución que pide el fin del embargo de Estados Unidos a #Cuba.

A FAVOR: 130
EN CONTRA: 17
ABSTENCIONES: 25

[Ian Corona @IanCorona]

Bye bye Bolsonaro

[Valy 🎩🎭 @liderfiscal]

HOY GANÓ BRASIL!
HOY GANÓ EL MUNDO!

La abarrotada Avenida Paulista envió su mensaje a Brasil y al mundo. Un mar de gente, esperanza y futuro tomando las calles.

#UrgenteCOMPARTAN #RTMasivo 👇🏼👇🏼👇🏼👇🏼👇🏼

[Macklemore @macklemore]

Wanting all humans to be treated equal should never be controversial.

[Jacob Coxon @hilbertspaess]

I resigned from Anthropic today. I spent the last three years doing pretraining research at both OpenAI and Anthropic. Neither company is acting responsibly. They are racing straight to self-improving superintelligence and gambling with our lives. More thoughts below.

[Abby Martin @AbbyMartin]

Celebrate America’s 250th by watching a film that will change how you see the US military and environmentalism itself.

🇺🇸 Earth’s Greatest Enemy on Apple TV & Amazon July 4 🇺🇸

[Daniel Mayakovski @DaniMayakovski]

"El esclavo negro doméstico ama a su amo, quiere vivir cerca de él, pagaría 3 veces el valor de una casa para vivir cerca de su amo, solo para luego jactarse de ser el único negro que vive allí".

Malcolm X, sobre la mentalidad de esclavo que agradece a su amo las migajas a costa del sufrimiento de la mayoría, hasta el punto de creerse que es del mismo bando del amo y querer civir como él.

Como decia Frantz Fanon, "Una mente colonizada luchará con más fuerza para proteger la imagen del amo que para recuperar su propia dignidad".

[Operador Nuclear @OperadorNuclear]

¿Quieres saber cómo funciona un reactor nuclear de agua a presión?

Miles de pequeñas pastillas cerámicas de óxido de uranio, de apenas 8 milímetros de diámetro y 1 centímetro de altura, van alojadas dentro de largas varillas metálicas fabricadas con una aleación de circonio. Un conjunto de 17 por 17 varillas forma un elemento combustible, de unos 20 centímetros de lado y alrededor de 4 metros de altura. En reactores de agua a presión diseñados por Westinghouse, como los de Almaraz, Ascó o Vandellós II, el núcleo del reactor está formado por 157 de estos elementos combustibles, alojados dentro de una enorme vasija de acero al carbono.

Todo el núcleo está cubierto por agua desmineralizada. Esa agua cumple una doble función esencial. Por un lado refrigera el combustible y, por otro, ayuda a frenar los neutrones para que puedan producir nuevas fisiones. El agua del circuito primario circula a unos 306 ºC de temperatura media y a una presión enorme, de unos 157 kg/cm², para que siga siendo líquida y evitar que hierva.

Dentro de las pastillas de combustible se produce la fisión del uranio-235. Un neutrón impacta contra un núcleo de uranio, lo excita y hace que se rompa en dos fragmentos más ligeros, que son otros elementos de la tabla periódica. En ese proceso se libera una enorme cantidad de energía en forma de calor, además de radiación y nuevos neutrones. Estos neutrones chocan principalmente con los núcleos de hidrógeno del agua, perdiendo velocidad mediante colisiones elásticas. Al frenarse, aumentan mucho la probabilidad de provocar nuevas fisiones del uranio-235, manteniendo así una reacción en cadena controlada.

El agua del circuito primario se calienta unos 30 ºC al atravesar el núcleo y después se dirige a unos grandes intercambiadores de calor llamados generadores de vapor. Allí circula por el interior de miles de tubos metálicos. Por fuera de esos tubos pasa agua más fría y a menor presión, perteneciente al circuito secundario. Esa agua absorbe el calor, se transforma en vapor y es enviada a la turbina. El agua del primario, que se ha enfriado unos 30 ºC, se vuelve a introducir en el reactor para refrigerarlo.

El vapor hace girar la turbina a unas 1500 revoluciones por minuto. Acoplado a ella hay un generador eléctrico que transforma esa energía mecánica en electricidad, la misma que finalmente llega a nuestros hogares.

Didáctico vídeo de Zack D. Films @zackdfilms1

[Viri Ríos @Viri_Rios]

La ultraderechista Díaz Ayuso acaba de anunciar que cancela el resto de su gira por México.

Se va, pero no sin antes haber destrozado a la derecha mexicana👇

https://t.co/BkakBZXIO4

[Jason Bassler @JasonBassler1]

We’ve officially reached the part of the timeline where war crimes are pitched like product features.

[Science Magazine @ScienceMagazine]

For decades, biology textbooks have enshrined a simple rule: DNA is made by copying a template. After one enzyme unzips a DNA double helix into separate strands, another called a polymerase builds a complementary sequence, base by base, for each strand. Presto: two copies of the original DNA.

But new research into how bacteria defend themselves from viruses now shows this synthesis rule isn’t absolute.

Now, a team describes a bacterial enzyme that synthesizes DNA without a nucleic acid template, using its own structure as a guide.

Learn more on #DNADay: https://t.co/ksN5lBxRw3

[Jason Bassler @JasonBassler1]

If Alex Karp had to say the quiet part out loud...

[Furkan Gözükara @FurkanGozukara]

LMAO who made this extremely based 😭😂🤣

[Elizabeth Haze @EilenGx]

WTF

[Palantir @PalantirTech]

Because we get asked a lot.

The Technological Republic, in brief.

1. Silicon Valley owes a moral debt to the country that made its rise possible. The engineering elite of Silicon Valley has an affirmative obligation to participate in the defense of the nation.

2. We must rebel against the tyranny of the apps. Is the iPhone our greatest creative if not crowning achievement as a civilization? The object has changed our lives, but it may also now be limiting and constraining our sense of the possible.

3. Free email is not enough. The decadence of a culture or civilization, and indeed its ruling class, will be forgiven only if that culture is capable of delivering economic growth and security for the public.

4. The limits of soft power, of soaring rhetoric alone, have been exposed. The ability of free and democratic societies to prevail requires something more than moral appeal. It requires hard power, and hard power in this century will be built on software.

5. The question is not whether A.I. weapons will be built; it is who will build them and for what purpose. Our adversaries will not pause to indulge in theatrical debates about the merits of developing technologies with critical military and national security applications. They will proceed.

6. National service should be a universal duty. We should, as a society, seriously consider moving away from an all-volunteer force and only fight the next war if everyone shares in the risk and the cost.

7. If a U.S. Marine asks for a better rifle, we should build it; and the same goes for software. We should as a country be capable of continuing a debate about the appropriateness of military action abroad while remaining unflinching in our commitment to those we have asked to step into harm’s way.

8. Public servants need not be our priests. Any business that compensated its employees in the way that the federal government compensates public servants would struggle to survive.

9. We should show far more grace towards those who have subjected themselves to public life. The eradication of any space for forgiveness—a jettisoning of any tolerance for the complexities and contradictions of the human psyche—may leave us with a cast of characters at the helm we will grow to regret.

10. The psychologization of modern politics is leading us astray. Those who look to the political arena to nourish their soul and sense of self, who rely too heavily on their internal life finding expression in people they may never meet, will be left disappointed.

11. Our society has grown too eager to hasten, and is often gleeful at, the demise of its enemies. The vanquishing of an opponent is a moment to pause, not rejoice.

12. The atomic age is ending. One age of deterrence, the atomic age, is ending, and a new era of deterrence built on A.I. is set to begin.

13. No other country in the history of the world has advanced progressive values more than this one. The United States is far from perfect. But it is easy to forget how much more opportunity exists in this country for those who are not hereditary elites than in any other nation on the planet.

14. American power has made possible an extraordinarily long peace. Too many have forgotten or perhaps take for granted that nearly a century of some version of peace has prevailed in the world without a great power military conflict. At least three generations — billions of people and their children and now grandchildren — have never known a world war.

15. The postwar neutering of Germany and Japan must be undone. The defanging of Germany was an overcorrection for which Europe is now paying a heavy price. A similar and highly theatrical commitment to Japanese pacifism will, if maintained, also threaten to shift the balance of power in Asia.

16. We should applaud those who attempt to build where the market has failed to act. The culture almost snickers at Musk’s interest in grand narrative, as if billionaires ought to simply stay in their lane of enriching themselves . . . . Any curiosity or genuine interest in the value of what he has created is essentially dismissed, or perhaps lurks from beneath a thinly veiled scorn.

17. Silicon Valley must play a role in addressing violent crime. Many politicians across the United States have essentially shrugged when it comes to violent crime, abandoning any serious efforts to address the problem or take on any risk with their constituencies or donors in coming up with solutions and experiments in what should be a desperate bid to save lives.

18. The ruthless exposure of the private lives of public figures drives far too much talent away from government service. The public arena—and the shallow and petty assaults against those who dare to do something other than enrich themselves—has become so unforgiving that the republic is left with a significant roster of ineffectual, empty vessels whose ambition one would forgive if there were any genuine belief structure lurking within.

19. The caution in public life that we unwittingly encourage is corrosive. Those who say nothing wrong often say nothing much at all.

20. The pervasive intolerance of religious belief in certain circles must be resisted. The elite’s intolerance of religious belief is perhaps one of the most telling signs that its political project constitutes a less open intellectual movement than many within it would claim.

21. Some cultures have produced vital advances; others remain dysfunctional and regressive. All cultures are now equal. Criticism and value judgments are forbidden. Yet this new dogma glosses over the fact that certain cultures and indeed subcultures . . . have produced wonders. Others have proven middling, and worse, regressive and harmful.

22. We must resist the shallow temptation of a vacant and hollow pluralism. We, in America and more broadly the West, have for the past half century resisted defining national cultures in the name of inclusivity. But inclusion into what?

Excerpts from the #1 New York Times Bestseller The Technological Republic: Hard Power, Soft Belief, and the Future of the West, by Alexander C. Karp & Nicholas W. Zamiska

https://t.co/8igjazz1On

[Aurélien Geron @aureliengeron]

@nattyover How could evolution produce such a complex and beautiful structure? The Stated Clearly channel has a mind-blowing series of videos on this, I highly recommend it:
https://t.co/8BBSfx91mE

[Mustafa. @oprydai]

@nattyover there is a really cool video on the by smarter everyday

https://t.co/aZXkFbLUVE

[Natalie Wolchover @nattyover]

What's especially cool is that the flagellar motor exploits the indivisibility of 5 by 2 to run on a fuel of rising entropy as protons diffuse into cells. For me as a physics and math person, this is biology at its best. https://t.co/TBAP5H3vR3

[Natalie Wolchover @nattyover]

Bacteria move around using a molecular machine called the flagellar motor that rotates faster than the flywheel of a race car engine and switches directions in an instant. After 50 yrs, scientists have finally figured out how it works. “My lifelong quest is now fulfilled.” Link⤵️

[MeidasTouch @MeidasTouch]

Possibly the worst aged tweet of all time

[Mark Slapinski @mark_slapinski]

America didn't just LOSE in Iran.

They also LOST the propaganda war.