The Agent that doesn't need a rewrite
The agent that survives its first year in production is usually a thin layer over the system you already have. Your ten-year-old codebase is not the obstacle. It is the asset.
Evals Are the Tests You Should Have Written First
Renaming tests to evals did not create a new discipline. It created permission to skip an old one - the obligation to define what correct means before shipping.
Why Agents Get Canceled
An agent is a production system that happens to be probabilistic, and it has to be operated like one - the surviving minority are not the teams with a better model, they are the ones operating better.
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