Spending

The shelf knows what you have. The ledger knows what you buy.

Those are two different questions, and one row on a shelf could only ever answer the first. Every shop you scan now writes itself down, so KitchenTalk can tell you where you buy a thing, what you tend to buy at each place, and for any single item, what came in against what got used and what got thrown away.

It started writing these down recently, and it says so rather than pretending a blank page means you have never bought something.