HRM 3450 Lecture Notes - Lecture 16: Irreducible Component
5 May 2018
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HRM 3450 Tutorial 16 Notes – The Real System
Introduction
• They represent the real system but are not actually the real system.
• For example, the solar system does not fit conveniently inside a computer!
• It should be obvious to you that all of the illustrations of systems are abstractions.
• The primary reason for humans to group components into systems and to represent
them as abstractions is to simplify understanding and analysis, particularly if the
individual components are numerous and complex.
• We can study the relationships between the different components without the
distraction created by the details of individual components.
• We can decompose, isolate and study individual components when required.
• We can study the interactions between the environment and the system as a whole.
• Effectively, our analyses are simplified by eliminating factors that are not relevant in the
context of our interests.
• In a large network of computers, for example, we may be concerned primarily with the
flow of data between computers.
• The details of the individual computers are unimportant.
• In general, dealing with models at the system level allows us to isolate and focus on the
specific elements of interest more easily, by treating other elements collectively.
• To escape our fixation on information technology systems for an instant, consider, just
for fu, the solar sste that ee used preiousl as a eaple.
• If we are studying the Milky Way galaxy, it is convenient and sufficient to treat the solar
system as a single irreducible component in the galaxy.
• We might be interested in the location and movement of our Sun in the galaxy, for
example, but the structure of the planets is irrelevant to our study in this case.
• On the other hand, if we are interested in studying the effects of the tides on a sea
shore here e are plaig to acatio, e ill hae to epad the Earth
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