Looking at a century of supermarket history, we would see how, using carts, bar codes, and self checkout they tried to boost what we buy.
When More Is Less at the Supermarket
When supermarkets carry fewer products, they lose the benefit of more variety but also minimize the cost of creating too many decisions.
How Transparency Transformed Food Shopping
When the development of cellophane let us have self-service shopping for meat and produce, it started a retailing revolution.
