| Summary: | To know and to appreciate is an art. It is an art that requires understanding of ‘what’, ‘do and don’t’, ‘when and where’ and ‘is it’ components of the subject involved. Simulation is an operations research (OR) tool used in solving problems concerning a system, by imitating the system. Thus, to appreciate this tool of OR needs the clarification regarding the components of simulation. This paper presents the answers to the question of - what is simulation, how does it work, when and where should it be applied and is it worth simulating. By collecting and understanding the answers to the question mentioned will aid in appreciating simulation as a tool to decision making and forsee the future of simulation. This paper touches on various definitions collected, the main factors of simulation, its application in specific fields and analyzing the advantages and disadvantages of simulation. It is then leave to the reader to make the conclusion regarding the significance of simulation as an OR tool towards decision making.
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