Why is Plant Demand not considered an Assumption in the Anaplan Optimizer? "Assumptions are line items with numeric format. They can be calculated or input. If they are calculated, you cannot use a variable as part of the formula." Since Demand would be numeric value, why would it not be an Assumption? You need to be able to balance your on-hand and your forecast to meet current and future needs with production. (in order to make sure that your product is at the current distribution center for shipping to the customer) Or is this answered later in the course?