A system analysis and model can tell us about system issues:
What modules exist - how to decompose into a set of modules,
the different choices of decomposition and their
properties and behaviors.
What information is processed by each module, what types of
data are processed. We can characterize information abstractly
by giving what choices the information characterizes.
The processing characteristics of each module, what
input information is used, what new information
is computed and what information is transmitted to other
modules.
The information exchange between modules, how do they
supply information to each other and how are
different types of information
obtained by each module.
Control issues, how are the activities of each module
coordinated, so they can each function.
Resources, how are resources such as energy
determined for each module. This is related to
issues of attention.
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