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Theory of technological evolution Mankind In Transition ; A View of the Distant Past, the Present and the Far Future , Masefield Books, 1993. Technology (which Richta defines as "a material entity created by the application of mental and physical effort to nature in order to achieve some value") evolves in three stages: tools, machine, automation . This evolution, he says, follows two trends: Development The pre-technological period, in which all other animal species remain today - aside from some avian and primate species - was a non-rational period of the early prehistoric man . The emergence of technology, made possible by the development of the rational faculty, paved the way for the first stage: the tool. A tool provides a mechanical advantage in accomplishing a physical task, such as an arrow, plow, or hammer that augments physical labour to more efficiently achieve his objective. Later animal-powered tools such as the plow and the hors...
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