Inputs -- people, materials, and resources from the outside
Transformation -- the process transforming inputs into something of value by
the system.
Outputs -- the byproduct of the transformation.
Feedback -- how the system communicates to its parts and the
environment.
Boundaries -- systems are differentiated from their environments.
Environment -- is anything outside the system.
Homeostatis -- a steady state of equilibrium
Entropy -- the tendency for all systems for run down and die.
Equifinality --the same end can be achieved many ways.