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Avery Pennarun

CEO of Tailscale. Previously at Google. Writes about networking, version control, and systems design.

https://apenwarr.ca/log/

Articles

Billionaire math

Wealth is relative - even startup exit millionaires have limits, while modest savings and tastes can enable financial independence.

NPS, the good parts

NPS's value isn't the score itself, but understanding that people rate based on emotions—lukewarm responses mean you failed to make them feel anything.

Interesting

The author relies heavily on intentional mental models for predictions, acknowledging their power but also the risk of confirmation bias.