Thus, in scientific research, a great deal of our thinking is in terms of theories. The word ‘theory’ derives from the Greek ‘theoria’, which has the… - David Bohm

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Thus, in scientific research, a great deal of our thinking is in terms of theories. The word ‘theory’ derives from the Greek ‘theoria’, which has the same root as ‘theatre’, in a word meaning ‘to view’ or ‘to make a spectacle’. Thus, it might be said that a theory is primarily a form of insight, i.e. a way of looking at the world, and not a form of knowledge of how the world is.