Editor Saahil Desai walks us through the surprising history of the barcode, from its origins in the grocery business to its role in remaking our consumer habits and appetites. The bar code allowed grocers to stock infinite varieties of everything, which led us to expect infinite varieties and made us the shoppers we are today. Both the grocery shelves, and our inner selves, would be unrecognizable to the grocery magnates of the ‘70’s.  Want to share unlimited access to The Atlantic with your loved ones? Give a gift today at theatlantic.com/podgift. For a limited time, select new subscriptions will come with the bold Atlantic tote bag as a free holiday bonus. Learn more about your ad choices. Visit megaphone.fm/adchoices