Fashion is constantly changing and influenced by trends that are accepted by a wide audience. The document discusses what fashion is, including concepts like individuality, conformity, and psychology. It also outlines the roles and processes of fashion forecasting, including analyzing trends, conducting market research, and predicting directions over 18 months in advance to meet consumer demand. The precision of forecasting depends on delivery times, raw material availability, and building confidence. The fashion industry encompasses areas like merchandising, garment production, finance, operations, and selling through various channels.