The Cultural Evolution of Meals
Defining a meal is surprisingly subjective. While we often label food by the clock, the distinction between a snack and a meal actually depends on social norms and the intended level of satiety rather than just the time of day.
We tend to think of breakfast or dinner as biological necessities, but their naming and timing are fluid cultural inventions. In many societies, the size and variety of the dish determine whether it counts as a formal meal. This definition even shifts across generations and borders as modern habits change. It is fascinating how our daily eating patterns are structured by tradition rather than strict scientific rules.
Source: Meal