You are correct. I was being a little lazy with my terminology. You can choose however you want to sample, random just being the simplest and most easily autom

You are correct. I was being a little lazy with my terminology. You can choose however you want to sample, random just being the simplest and most easily automated mechanism. The key is that you degrade from a perfect record to a statistical record. Traces should degrade from a perfect record to a statistical record of correlated events (whole traces). Metrics are “inherently degraded” from a perfect record to a aggregate record for situations where you know you can not have a perfect record, but you want information (even if low precision) on every event.