[silbercue]

been eyeing Instruments integration for my own iOS tooling for months and kept bouncing off it. xctrace output + parsing traces felt like a rabbit hole. DuckDB + Parquet is a way nicer angle than what I had in mind.

> Where the AI trips up is getting distracted by aggregate signals

this shows up everywhere in agent loops. anytime I hand Claude a wide slice of anything it starts reasoning in averages. the moment I narrow to ~10 rows it locks onto the actual root cause. so derived views sound like exactly the right shape. how big do real traces get in your duckdb format? does a 5min scroll-heavy trace stay manageable =)