Eric Seijo

CTO, Software engineer, jazz musician, triathlete, life hacker, wine lover, truth seeker.

[Eric Seijo @eseijo]

🤯😂

[Murray Rothbard @MurraySuggests]

The Iranian navy, which has been destroyed eight times, has apparently closed the Strait of Hormuz again, because the United States, for the seventh time, won the war that wasn’t a war, so now the United States has to open the Strait of Hormuz that was already open before the not-war began.

The not-war began because Iran had uranium that was totally, completely, beautifully obliterated, so they can’t build the nuclear bomb they weren’t building, which is why the United States had to start the not-war it definitely didn’t start.

Now the United States, which has nuclear weapons, is threatening to use nuclear weapons to stop Iran from getting nuclear weapons, because nuclear weapons are far too dangerous for countries with nuclear weapons to allow other countries to have.

If the United States saw the United States doing what the United States does in other countries, the United States would invade the United States to liberate the United States from the tyranny of the United States.

[Eric Seijo @eseijo]

@_catwu @lennysan Great podcast and insights! “Just do things” 🤩

[Eric Seijo @eseijo]

@Jason I’m in

[Andrej Karpathy @karpathy]

Very interested in what the coming era of highly bespoke software might look like.

Example from this morning - I've become a bit loosy goosy with my cardio recently so I decided to do a more srs, regimented experiment to try to lower my Resting Heart Rate from 50 -> 45, over experiment duration of 8 weeks. The primary way to do this is to aspire to a certain sum total minute goals in Zone 2 cardio and 1 HIIT/week.

1 hour later I vibe coded this super custom dashboard for this very specific experiment that shows me how I'm tracking. Claude had to reverse engineer the Woodway treadmill cloud API to pull raw data, process, filter, debug it and create a web UI frontend to track the experiment. It wasn't a fully smooth experience and I had to notice and ask to fix bugs e.g. it screwed up metric vs. imperial system units and it screwed up on the calendar matching up days to dates etc.

But I still feel like the overall direction is clear:
1) There will never be (and shouldn't be) a specific app on the app store for this kind of thing. I shouldn't have to look for, download and use some kind of a "Cardio experiment tracker", when this thing is ~300 lines of code that an LLM agent will give you in seconds. The idea of an "app store" of a long tail of discrete set of apps you choose from feels somehow wrong and outdated when LLM agents can improvise the app on the spot and just for you.
2) Second, the industry has to reconfigure into a set of services of sensors and actuators with agent native ergonomics. My Woodway treadmill is a sensor - it turns physical state into digital knowledge. It shouldn't maintain some human-readable frontend and my LLM agent shouldn't have to reverse engineer it, it should be an API/CLI easily usable by my agent. I'm a little bit disappointed (and my timelines are correspondingly slower) with how slowly this progression is happening in the industry overall. 99% of products/services still don't have an AI-native CLI yet. 99% of products/services maintain .html/.css docs like I won't immediately look for how to copy paste the whole thing to my agent to get something done. They give you a list of instructions on a webpage to open this or that url and click here or there to do a thing. In 2026. What am I a computer? You do it. Or have my agent do it.

So anyway today I am impressed that this random thing took 1 hour (it would have been ~10 hours 2 years ago). But what excites me more is thinking through how this really should have been 1 minute tops. What has to be in place so that it would be 1 minute? So that I could simply say "Hi can you help me track my cardio over the next 8 weeks", and after a very brief Q&A the app would be up. The AI would already have a lot personal context, it would gather the extra needed data, it would reference and search related skill libraries, and maintain all my little apps/automations.

TLDR the "app store" of a set of discrete apps that you choose from is an increasingly outdated concept all by itself. The future are services of AI-native sensors & actuators orchestrated via LLM glue into highly custom, ephemeral apps. It's just not here yet.

[Eric Seijo @eseijo]

@Mark_Sisson A huge win! #JERF finally getting recommended🙏🏽

[Eric Seijo @eseijo]

Great advice!

[Lulu Cheng Meservey @lulumeservey]

https://t.co/nVVqSm8DhO

[Eric Seijo @eseijo]

@Alan_Couzens 🙌🏾 I’ve done everything except for 4… Do you have a recommended strategy?

[Eric Seijo @eseijo]

This 100% speaks to me as the path to health & wealth. Thank you Mark for the daily apples of wisdom and knowledge! 🙏🏽💪🏽

[Mark_Sisson @Mark_Sisson]

Welp, I turned 72. I try not to obsess about it. The years just fly by.

The hip replacement was the big event for me this year, and I feel like I’m back to 100%. Sprinting (within reason), hard hikes and walking as long as I want without any pain. I'm back playing Ultimate again. Probably will continue to resist pickleball though.

As you may know, I’m the original anti-biohacker. I don’t do wearable devices, trackers, protocols, therapies, or hot/cold regimens. Other than vitamin D and a little TRT, I don't even take supplements (and collagen doesn't count). But that’s pretty much it.

Diet is still 80% of my body comp focus. I don’t train all that hard anymore, most of it intuitively and all based on how I feel that day and what sounds fun. Almost never more than an hour or more than once a day, but I do mix it up a lot. I’m not focused on VO2Max the way some are as the "premier" longevity target.

I walk a lot. I consider myself a hybrid athlete. I want to be competent across a broad range of fitness metrics: sprints, dead hangs, slacklining, plank-holding, deadlifting, pull-ups, rope pulls, etc. I want to be fit enough to do a wide variety of endurance type activities, from Ultimate Frisbee, to long SUP sessions, to high level hiking or biking (zone 3,4,5) for an hour. Always with play in mind. Longevity is a long game, and there are many variables to consider. Once you stop moving, you start dying.

And remember: that's figurative, not just literal. Physical movement is paramount but movement in all areas of life matters just as much. Professional, creative, relationships, cognition. Are you making strides? Are you still creating? Are you growing your most important relationships? Are you still thinking about hard subjects? Are you open to changing your mind? Are you agile enough to change the minds of others?

This is what I'm thinking about when I think about longevity. Movement of all kinds.

[Eric Seijo @eseijo]

@armankhon Awesome! I read through and starred your roadmap today and will share with teams I manage. It’s really well done, thanks so much for sharing it with the community!

[Eric Seijo @eseijo]

2nd place in my age group at the @BestDamnRace 5k. My goal is sub 20 min by the end of the year. #bestdamnrace #borntorun #running

[Eric Seijo @eseijo]

@brady_h Hahahaha 😂

[Eric Seijo @eseijo]

@realDaveFeldman @wideawake_media @Metabolic_Mind Awesome, congrats! I can’t wait to rent or buy it online.

[Eric Seijo @eseijo]

@MetabolicUncle Awesome thanks!

[Jason Fried @jasonfried]

A passage from the Tao that’s frequently worth revisiting.

[Brady Holmer @Brady_H]

Hippocrates had the cure for overtraining.

And it’s better than you think.

[George Mack @george__mack]

Steve Jobs email he sent himself 13 months before he died.

Whenever I re-read this, I regret waiting so long to have read it again.

[Eric Seijo @eseijo]

@t3dotgg Awesome! 🤣😂

[Eric Seijo @eseijo]

@Alan_Couzens ❤️ this, you’re my kind of people!

[Eric Seijo @eseijo]

@maxxithon 🙏🏽🤲🏽