Answer:
Models are used to save time, money and lives.
True.
Explanation:
Models are prototypes or replicas of an idea. A model is supposed to represent an object or the proposal of an idea. Models are built to study an idea and understand how the idea functions, its level efficiency, its safety, security and costs under pre-determined working situations.
A model undergoes laboratory, research studies and tests before the real idea is constructed or implemented. Examples are the model of a proposed multi-storied glass and steel building or a long-distance suspended steel truss bridge or an automated robot for an automobile plant or factory.
Models can be expensive to construct but never as expensive as having the real and final idea implemented. The construction of models also prevents lives from been lost as possible accidents caused by human erros and mechanical errors are corrected before the final production stage.
For example, the construction of the model of a space aircraft is very expensive to finance. Its takes many years of research and laboratory tests, the collaboration a number of renowned professionals in the space and navigation field, huge amount of investments and further research to arrive at a reasonable and logical solution. Therefore, as part of the research and testing stage, a prototype is built, it´s mechanism, space worthiness and safety are first ascertained before investing in the real aircraft. This saves lives, money and time as all vary aspects of safety and security are corrected before the final airship is built.
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