It has been argued that perhaps the symbols people use are what create concepts, and therefore no common understanding between cultures, races, or times is possible. Dramatica works because indeed there ARE common concepts: Morality, for example. Morality, a common idea? Yes. Not everyone shares the same definition of morality, but all cultures and individuals understand some idea that means "morality" to them. In other words, "morality" may have many different meanings--depending on culture or experience--but they all qualify as different meanings of "morality." Thus there can be universally shared essential concepts even though they drift apart through various interpretations. It is through this common reference of essential concepts that communication is possible.