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Marcus Lewis

@probablymarcus.com

205 followers 110 following 13 posts

AI, programming, neuroscience. Previously UMichCSE, Microsoft, Numenta, now working on a better user/code interface for scientific computing probablymarcus.com

Posts Replies Media

Marcus Lewis @probablymarcus.com · 29/06/2026

★ A native graphical shell for SSH probablymarcus.com/blocks/2026/... I spent time rethinking how we should interact with servers, Raspberry Pi, robots, etc., then built it up piece by piece.

probablymarcus.com

A native graphical shell for SSH

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Marcus Lewis @probablymarcus.com · 11/05/2026

I made something. It's like a web view, but native. Rather than parsing HTML and running JavaScript, it fetches machine code binaries over the internet and runs them sandboxed. probablymarcus.com/blocks/2026/...

probablymarcus.com

It’s like a web view, but native

Marcus Lewis

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Marcus Lewis @probablymarcus.com · 10/04/2026

Ubiquiti is the D3.js of WiFi. D3 wins not because it's great (though it may be!), but because it makes you build visualizations from scratch. Ubiquiti wins because it makes you wire up your home with ethernet and APs and switches.

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Marcus Lewis @probablymarcus.com · 09/04/2026

New blog post: "Tip: Use services, not the terminal, to run local backends" probablymarcus.com/blocks/2026/...

probablymarcus.com

Use services, not the terminal, to run local backends like Jupyter / Tensorboard

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Marcus Lewis @probablymarcus.com · 11/02/2026

Reminds me of another favorite few sentences, from Vernor Vinge's "A Deepness in the Sky"

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Marcus Lewis @probablymarcus.com · 11/02/2026

Paul Graham's "Startup = Growth" essay was the one that most exceeded my expectations. Sometimes I come back to it just to re-read the last few sentences. www.paulgraham.com/growth.html

paulgraham.com

Startup = Growth

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Marcus Lewis @probablymarcus.com · 25/01/2026

Watching my 8-month-old kid via "Memories" in my photos app, I feel like Cooper from "Interstellar" watching time skip forward. It's a huge relief when the video ends at the present.

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Marcus Lewis @probablymarcus.com · 20/10/2025

I also wrote a blog post about its internals. "Web apps over SSH can be surprisingly good" probablymarcus.com/blocks/2025/...

probablymarcus.com

Web apps over SSH can be surprisingly good

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Marcus Lewis @probablymarcus.com · 20/10/2025

I built a fun little Mac app called "Outer Loop". It's a specialized web browser that is aware of SSH. It's good at connecting to web apps running on private servers. Use it for Tensorboard, Jupyter, etc. Download it at outerloop.sh

outerloop.sh

Outer Loop

Use web apps over SSH

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Marcus Lewis @probablymarcus.com · 04/08/2025

New blog post: "Smooth Pursuit, and how Screens Don't Mimic Reality" Your brain makes clever use of smooth eye movements. This works in the real world, but it fails on screens. probablymarcus.com/blocks/2025/...

probablymarcus.com

Smooth Pursuit, and how Screens Don’t Mimic Reality

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Marcus Lewis @probablymarcus.com · 13/06/2025

New post: The web could use machine code probablymarcus.com/blocks/2025/... If AI code generation is coming, then it's time to move away from the "write once, run everywhere" web.

probablymarcus.com

The web could use machine code

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Marcus Lewis @probablymarcus.com · 24/10/2023

New blog post. I tried something new, got good results, and learned some surprising nuances of GPU programming. probablymarcus.com/blocks/2023/...

probablymarcus.com

What happens when you vectorize wide PyTorch expressions?

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Marcus Lewis @probablymarcus.com · 21/10/2023

Just realized that 4 of my last 5 blog posts end with variations on the same idea. Apparently I'm on team "Give people tools that encourage them to become experts"

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