Feedback loop

When I make a photograph, my perceptions feed into my mental model. My model adjusts to accommodate my perceptions (leading me to change my photographic decisions). This modeling adjustment alters, in turn, my perceptions. And so on. It is a dynamic, self-modifying process. It is what an engineer would call a feedback loop. 
It is a complex, ongoing, spontaneous interaction of observation, understanding, imagination, and intention. 

– Steven Shore, The Nature of Photographs

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