Naur, P. Computing: a human activity
Dom, 04/11/2010 - 14:45 | 
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p.11
The reason for introducing data representing a given physical reality is that we have to influence or change that reality and that the data may help us to do this.
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Basically we replace the direct operation on the real world by operations on data representing the world, a model of the world, (...)
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The notion of data is meaningless without the notion of processes working on data.
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