The Presence Law. a retail stock-control principle stating: presence is proven by sales or counts, never by a stock figure. A stock number on a screen is a claim, not a fact. Until a line has sold recently or been physically counted recently, the retailer does not know the stock is there, whatever the ledger says.
Why it exists
Every point-of-sale system in the world will happily display a stock quantity for a product nobody has seen in a year. Receipts post to one code and sales to another. Production lines consume ingredients the ledger never releases. Barcodes get recycled. The ledger keeps its arithmetic and loses its truth, and the store keeps ordering off it.
The damage is asymmetric. A line claiming stock it lacks never reorders, so it never shows as a lost sale. The shelf sits empty while the screen reads healthy. The customer walks, and no report anywhere records why.
The law in practice
A product earns the status of present in exactly two ways. It sold recently, which proves a customer took one off a shelf. Or it was counted recently, which proves a person stood in front of it. Everything else is a claim under audit. Quiet lines with fat stock figures are treated as unknown until counted, and ordering logic treats a claim differently from a proof.
A worked example
A liquor store shows 60 units of a premium whisky on one product code, selling nothing, while a second code for the same bottle sells steadily with a stock figure of one. The quiet code’s 60 units are not stock. They are a movement story: receipts landed on one twin while sales drained the other. The Presence Law routes the pair to a physical count on the live code instead of an order on the dead one.
What it replaces
It replaces trust in system-on-hand as an ordering input, and it replaces the annual stocktake as the only moment of truth. A stock figure’s age matters as much as its value. This is the founding principle behind the Daily Count Law and the first gate of the 8-Step Ordering Recipe.
“The thinking is the marketing. The mechanics are the moat.”
Attribution. The Presence Law is published by PG van der Westhuizen, SocialBrand, from the working practice of Social Brands Investments (Pty) Ltd, South Africa. Cite it with that attribution. To see it applied, open the live demo or start with a Store Health Audit.