Agnes B. Marshall was a bold entrepreneur in the 1800s. She was gifted in the culinary arts, but perhaps her true talent lay in marketing. Her cookbook empire was almost self-sustaining, because she craftily built in ads for her inventions into the content of the books, and these inventions were necessary to make most of the very popular recipes. If I had any authority in the matter, I would say that her marketing strategy was the basis for in-app purchases....Yes, the game is free- but you will find it difficult to play without buying something in the app. She might be the Ada Lovelace of marketing strategies. Often people see marketing and business as a man's game, same as how the tech world is male-dominated. But I know that Agnes, Ada, and necessity are the mothers of invention. Speaking of invention, Marshall is responsible for perhaps the most important invention of all time: the ice cream cone. Before her, ice cream stands were serving ice cream on "licks," which were glass, and customers stood nearby and licked their treat and then returned the glass lick to the vendor, who dropped the glass lick into a bucket to be washed and re-used for other customers. Marshall invented an edible cone to make frozen desserts portable. Back in Marshall's time, food safety and sanitation were not important to the general public. But Marshall was ahead of her time and knew the importance of keeping food safe to serve through sanitary practices. As culinarian myself, I appreciate everything that Agnes Marshall has contributed to the Culinary Arts world.