A university professor on Library and information science told me that he considers Shannon's information theory too limited since it doesn't apply to open systems.
I couldn't find info to back up this assertion. Maybe the issue might be related to the definition of system.
One definition is:
A system is a group of interacting or interrelated elements that act according to a set of rules to form a unified whole.
But a physical system uses a different definition:
In physics, a physical system is a portion of the physical universe chosen for analysis. Everything outside the system is known as the environment. The environment is ignored except for its effects on the system.
Both definitions shouldn't contradict (moreover, considering both as part of system science). Which definition applies to information theory? The possible contradictions don't apply in this case?
If true, why doesn't Shannon's information theory apply to open systems?
Maybe related
Bibliography
(Given by the professor)
