Do not open the tank to think
Fog, frost, and a goblet you cannot read. That is a expensive way to count straws.
Every time the lid comes up, nitrogen leaves. The semen companies print pretty catalogues. They do not know what is in your canisters this morning.
A digital twin — tank, canister, goblet, straw — is a HerdMate module on the map, not a live screen yet. Until it ships, treat the tank like a tool, not a filing cabinet: know the bull before you dip.
When the tank screen exists, the crush lookup should deduct a straw. That is the point. We are not there today. We are honest about that.