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Byrne Hobart

Byrne Hobart

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Author of The Diff; technology, finance, and public equity fundamentals.

Red Lobster’s Collapse Reveals Elitist Contempt in Populism
Social•Apr 3, 2026

Red Lobster’s Collapse Reveals Elitist Contempt in Populism

Red Lobster did go bankrupt after a PE firm bought them. But it was also after that PE firm sold them to a non-PE company. There’s an elitist strain to economic populism where they have utter contempt for the people they’re trying to persuade.

By Byrne Hobart
Google Could Gauge AI's Impact on Doctor Visits and Emissions
Social•Mar 29, 2026

Google Could Gauge AI's Impact on Doctor Visits and Emissions

I don't know what Google's policies on sharing anonymized data across services are, but given that they have Gemini and Maps, they're uniquely qualified to see if AI causes a big enough reduction in visits to doctors, CPAs, etc. that...

By Byrne Hobart
Tiny Efficiency Gains Could Offset 25bn Gallons of Diesel
Social•Mar 29, 2026

Tiny Efficiency Gains Could Offset 25bn Gallons of Diesel

Great post illustrating the opposite of its actual point: big rigs use 25bn gallons of diesel each year, so we could offset this wasteful activity by making them 0.0007% more efficient. Or 0.0014% more efficient if you count the return...

By Byrne Hobart
AI-Revived Actors Spark Debate Over Authenticity Over Time
Social•Mar 18, 2026

AI-Revived Actors Spark Debate Over Authenticity Over Time

When they make movies with AI versions of now-dead actors, will they update them as models get better? Will there be purists who insist that the 2027 version just doesn't have the soul of the '26 original?

By Byrne Hobart
Estimating Billion‑Dollar Price Tag for Anthropic's
Social•Mar 17, 2026

Estimating Billion‑Dollar Price Tag for Anthropic's

If you were Ken Griffin, how much would you pay Anthropic to do this? Feel free to round to the nearest billion.

By Byrne Hobart
Kids Outpace Parents in DIY Electronics Basics
Social•Mar 15, 2026

Kids Outpace Parents in DIY Electronics Basics

I never learned about electronics, so my knowledge is always 5-10 pages in the Sparkfun manual ahead of my 6yo’s. (This project is an LED that can be toggled on and off by a photoresistor.) https://t.co/nO6A6BgYZS

By Byrne Hobart
AI‑written Stories About AI Job Takeover Go Viral Unnoticed
Social•Mar 9, 2026

AI‑written Stories About AI Job Takeover Go Viral Unnoticed

It's a kind of interesting literary development that one of the most popular kinds of LLM-written content is fiction about LLMs replacing all the jobs. These stories reliably do numbers, and apparently their audience doesn't notice or care that it's...

By Byrne Hobart
PBM Critics Overlook Their Owners' Low, Stagnant Margins
Social•Mar 6, 2026

PBM Critics Overlook Their Owners' Low, Stagnant Margins

So I've read a few long essays on how abusive pharmaceutical benefit managers and group purchasing organizations are, and they all make a strong case. And then I look at the companies that own PBMs, and their margins are a)...

By Byrne Hobart