Engineering
Engineering is the creative application of science, mathematical methods, and empirical evidence to the innovation, design, construction, operation and maintenance of structures, machines, materials, devices, systems, processes, and organizations. The discipline of engineering encompasses a broad range of more specialized fields of engineering, each with a more specific emphasis on particular areas of applied mathematics, applied science, and types of application. See glossary of engineering.
Security
Security is freedom from, or resilience against, potential harm (or other unwanted coercive change) from external forces. Beneficiaries (technically referents) of security may be persons and social groups, objects and institutions, ecosystems, and any other entity or phenomenon vulnerable to unwanted change by its environment.
System
A system is a regularly interacting or interdependent group of items forming an integrated whole. Every system is delineated by its spatial and temporal boundaries, surrounded and influenced by its environment, described by its structure and purpose and expressed in its functioning.
System
What is a system? A system is a network of interdependent components that work together to try to accomplish the aim of the system. A system must have an aim. Without an aim, there is no system. The aim of the system must be clear to everyone in the system. The aim must include plans for the future. The aim is a value judgment. (We are of course talking here about a man-made system.)
W. Edwards Deming (1999) The New Economics for Industry, Government, Education
Security
In the entire world, there is not a single establishment of the security industry that is not based on monopoly or on communism. … Political economy has disapproved equally of monopoly and communism in the various branches of human activity, wherever it has found them. Is it not then strange and unreasonable that it accepts them in the security industry?
Gustave de Molinari, tr. J. Huston McCulloch, §IV of The Production of Security (Auburn, AL: Ludwig von Mises Institute, 2009; orig. 1849), pp. 27–28.
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