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What is an O-ring in this situation? I was expecting an article on sealing but this has me confused.
Richard Rumelt has a nice article about this:

> The strength of a chain depends on the strength of its weakest link. When activities have chain-link logic, the strength of the weakest, or least efficient, part limits the performance of the whole. Thus, a solid rubber O-ring was the weakest link for the Space Shuttle Challenger. Falling out of the winter sky in 1986, it shattered onto the ocean below, killing the crew President Reagan called “pride of our nation.” For the Challenger, making the booster engines stronger or improving its communications systems would be foolish investments if the O-ring remained weak.

https://strategeion.substack.com/p/the-logic-of-the-chain

dead simple: (AI) automation gains can't be modeled via linear task-savings due to "the structure of bottlenecks and how automation reshapes worker time around them"

Nothing in the article about targeting the rate-limiting factors.

And on the first line of the first page, this gem of gratitude: "We thank Refine.ink, ChatGPT 5.2 Pro, and Claude Opus 4.5 for research assistance"

And on this government-sponsored paper, a warning that copying ANY portion of the text REQUIRES I accompany it with full credit, including the copyright notice, so that quote above puts me into noncompliance.