The document discusses the use of simulation in various industries and contexts. It provides an overview of what simulation is, its advantages and disadvantages. Specific examples are given of companies in different sectors like financial planning, manufacturing, retail and oil that use simulation for purposes like product development, sales forecasting, research and development, and optimizing plant capacity. One case study describes how a simulation solution was developed for a client to improve sales team efficiencies through a simulated 18-month sales cycle competition. Metrics were tracked at each decision point to measure learning. The document also briefly explains the chemical process simulation software ASPEN Plus and how it is used for modeling, optimization and performance analysis of chemical plants.