Reletter
Artwork for Permanent Future

Permanent Future

Julian Estevez

A literary attempt to share my thoughts as a Professor who teaches robots common sense while secretly suspecting they'll soon be teaching me.

Platform
Substack
PricingOnly free issuesPublishesTwice weekly
Issues800Founded3 years agoLast Issue9 days ago
Active
Language
Spanish

Read this Newsletter

jeibros.substack.com
Artwork for Permanent Future

Latest Issues

Quién tiene derecho a la tecnología más peligrosa

Munición de tres líneas

En 1991, Phil Zimmermann subió a internet un programa llamado PGP. Pretty Good Privacy. Cifrado fuerte, gratuito, para cualquiera con un módem y ganas de proteger su correo. Lo que para él era una herramienta cív...

9 days ago
7

Who Gets to Use the Most Dangerous Technology

Munition in three lines

In 1991, Phil Zimmermann uploaded a program called PGP to the internet. Pretty Good Privacy. Strong encryption, free, for anyone with a modem and the urge to protect their email. What was a civic tool for him was...

9 days ago
3

Por qué pedirle a Claude que "se mejore a sí mismo" es una trampa matemática

Hagamos un experimento mental de comienzo de semana. Abres tu modelo de lenguaje de cabecera y le escribes: “Oye, ya sé cuál es tu arquitectura actual. Pero échale un ojo a tu propio código, a tus propios pesos… y mejóralo. Conviértete en t...

16 days ago
4

Why Asking Claude to "Improve Itself" Is a Mathematical Trap

Let’s run a thought experiment. You open your LLM of choice and type: “Look, I know what your current architecture is. But I want you to review your own code, inspect your own weights—and improve them. Turn yourself into your own advanced v...

16 days ago
3

Everyone Fails Somewhere

A few weeks ago, I published an article about grade inflation and top marks around the world, which got quite a bit of traction. The journalist even covered it in ElConfidencial. Well, there’s more to say:

On May 20, 2026, Harvard’s Facul...

23 days ago
2

Key Facts

Contact Information
Newsletter Author
Number of Subscribers
Find out how many people subscribe to this newsletter.

Audience Metrics

Subscribers, engagement, traffic and sponsorship for Permanent Future.

SubscribersEngagement71Monthly Web Visits
Accepts SponsorsEstimated Cost per Ad

Authors

The writers behind this newsletter.

  • Julian Estevez

    This is my literary attempt to share my thoughts as a Professor who teaches robots common sense while secretly suspecting they'll soon be teaching me. I dive into UAVs, AI, and education with equal parts scientific precision and accidental comedy.

  • Frequently Asked Questions

    How can I access the email archive for Permanent Future?

    You can find recent issues that have been published by Permanent Future on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.

    How many subscribers does Permanent Future have?

    To see how many people subscribe to Permanent Future, simply upgrade your Reletter account. We provide readership numbers and lots of other stats for this newsletter so you can decide if it's worth reaching out to.

    How can I advertise in Permanent Future?

    Newsletter advertising can be extremely effective when it's done right. Before you pitch Permanent Future as a potential sponsor or partner, make sure that you've done your research and checked its newsletter stats with Reletter.

    Then, personalize one of our winning pitching templates and send it to the right person using the contact info provided.

    How much does it cost to sponsor a publication like Permanent Future?

    Newsletter ad rates (or CPM) vary depending on many factors, including industry, number of subscribers, open rate, ad placement and more.

    To find out how much an ad will cost, contact Permanent Future using the contact information provided and ask for a copy of their media kit.

    How can I find newsletters related to Permanent Future?

    Scroll up to where it says Related Newsletters to see other publications like Permanent Future. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.

    How do I contact Permanent Future?

    Reletter provides this newsletter's website URL above, where you will often find their contact information. We also provide links to associated social media accounts and pitching templates so you can reach out fast.