In addition to evaluating changes to an existing system, simulation is also used to establish the feasibility of a proposed new system. In such cases there may be little or no data available, and the modeling must be done at a high level since details will only be worked out if a "go" decision is made. In this project, a company is trying to decide whether to do some electronic assembly and testing in house; previously this job was subcontracted to another company. The key (ประเด็นสำคัญ) is whether they can attain a desired cycle time with a limited commitment of labor and capital.