I have one of the feature articles at EconLib this month. It’s some musings on the evolution of grocery stores and what it says about American economic progress. A snippet:

“There is simply no comparison between the quality of the produce, meats, and bread available at even a large middle-market chain like Kroger today and what was available anywhere in the 1970s. Measured in terms of labor hours required for purchase, food has generally never been cheaper. We see that today, as poverty in America is far more likely to be associated with obesity than with being underweight.

The growth in the variety of products available in the market in general is an excellent, if underappreciated, indicator of economic progress, reflecting as it does the Smithian insight that the division of labor is limited by the extent of the market. With growth comes more wealth and larger markets that enable producers to have a market for more finely differentiated products.

An example from the evolution of the grocery store illustrates this point. In the 1970s, there were maybe five or six kinds of potato chips (regular, barbecue, sour cream and onion, ruffled, tortilla chips, and the stuff in the can). Today, the typical grocery store has a potato chip aisle that offers dozens of differentiated products along numerous dimensions. This increase in variety allows consumers to satisfy their preferences more precisely, increasing their subjective well-being. You want your gluten-free, lactose-free chocolate chip cookies? You can probably find them. You want your throwback taco-flavored Doritos? They’re there. The expansion of variety in the typical grocery store has dramatically increased the subjective well-being of American consumers in ways that macroeconomic measures like GDP cannot capture.”