A tradition is a practice, custom, or story that is memorized and passed down from generation to generation, originally without the need for a writing system. Tools to aid this process include poetic devices such as rhyme and alliteration. The stories thus preserved are also referred to as tradition, or as part of an oral tradition.Tradition is a knowledge system (a means of transferring knowledge). Economists Friedrich Hayek and Thomas Sowell explain that tradition is an economically efficient way to transfer and obtain knowledge of all kinds. Sowell, for example, notes that decision-making consumes time (a valuable resource), and cultural traditions offer a rich, low-cost, consensually authenticated way to economize on the resources required to make decisions independently Chemist and philosopher Michael Polanyi argues that the importance of tradition stems precisely from the fact that we know more than we can articulate, and that we amass and communicate