The boundary markers found within a physical environment create a framework within which the activities and interactions of individuals can be understood.

These boundary conditions set the stage for daily life, dreams, expectations, and change.

When generating a mathematical model of a system, the first step is to observe and describe the relationships between different variables or interacting bodies. These relationships are written as a series of differential equations which can then be solved, often yielding a wide variety of solutions. In order to find a specific solution, it is often necessary to observe and incorporate the conditions at the edges of the modeled space. The application of these boundary conditions defines the space within which the solution can be found.