Will Larson
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lethain.com
Will Larson
@lethain.com
Write at lethain.com. Author of An Elegant Puzzle, Staff Engineer, and An Engineering Executive’s Primer. Worked some places.
Thank you! 🙏
October 26, 2025 at 2:20 PM
There's also a sense, for me anyway, that the frontier has moved somewhere else -- I'm not quite sure where -- but a lot of social media today feels like a regurgitation of things that already happened rather than something new/interesting/evolutionary.
October 25, 2025 at 10:24 PM
Yeah, absolutely an era I miss fondly. There was a post from @copyconstruct.bsky.social a week or two ago that captured the reality for me -- most of the folks I want to talk with are gone, and I've personally *mostly* left social media for all significant purposes.
October 25, 2025 at 10:22 PM
*Good 😅
July 20, 2025 at 4:49 AM
Could point! This probably does exist somehow already
July 20, 2025 at 4:49 AM
Yeah, so you can imagine another stage in this process of summarizing all rfcs to extract problems, but I’m more specifically looking for a pattern we could scale across many functions, eg compliance feedback, security feedback, etc
July 20, 2025 at 2:32 AM
I love your post!
July 10, 2025 at 2:20 AM
I think programming languages are already pretty exhaustively represented in the training sets, although it certainly varies language by language, and providing more detailed in-context learning is usually preferable in my experience.
June 14, 2025 at 5:35 PM
Have six (draft, unedited) chapters of my upcoming book exploring this idea in a bit more detail!

craftingengstrategy.com/aic/generate...
AI Companion / Generating Systems Models
Crafting Engineering Strategy has a chapter on systems modeling along with a number of examples. Those examples focus on using the lethain/systems python library to generate models using a Jupyter not...
craftingengstrategy.com
June 14, 2025 at 5:19 PM
Part of this project that I'm excited about is also releasing an LLM-optimized version of the book designed to be throw into an Claude/ChatGPT project as in-context learning, which I'm working with O'Reilly to distribute. Not available yet, but you ca see use examples on website!
June 12, 2025 at 4:28 AM
You can already read the full, unedited version of the book online at craftingengstrategy.com (most of those have also come out on my blog over the past 18 months as I wrote)
Crafting Engineering Strategy
craftingengstrategy.com
June 12, 2025 at 4:28 AM
Coordination between company facilities teams and building’s janitor teams on how to clean rooms
May 23, 2025 at 12:47 PM
Hah, I've heard of a few companies that did something similar! I don't think the _intent_ is wrong, but I do think it might be a lot more direct to educate the folks not sharing the space effectively.
May 22, 2025 at 11:42 PM
I respect you for that, but cannot join you lol
May 22, 2025 at 1:36 AM