Black Box Theory is a concept used in various fields, including systems theory and psychology, to describe a system whose internal workings are not known or are not important for understanding its behavior. Instead, the focus is on the inputs and outputs of the system. By analyzing how the system responds to different inputs, one can infer its functionality without needing to understand the underlying processes. In computer science, Black Box Theory is often applied in software testing, where a program is evaluated based solely on its outputs in response to specific inputs. This approach allows testers to identify errors and assess performance without needing to examine the code itself, making it a practical method for evaluating complex systems.