true or false

20. The MPC system is concerned with planning and controlling all aspects of manufacturing except scheduling machines and people. Forecasts are always inaccurate and should thus include both the expected value of the forecast and a measure of forecast error. In general, the farther up the supply chain a company is, the greater is the distortion of information it receives. Through the demand management module, information on the market is gathered, orders are entered, products are configured, manufacturing specifications are developed, and customers are informed of product availability and delivery times