Inspiration is sum of many things. First you see a cool trick done with 'unsharp tool'. Then you get a tip to have a look of beautiful pictures and interesting story. And finally you decide to combine multiple old tricks previously inspired by something or someone else. All this can be put under label of constructivism.
Last week I experienced with forms and shapes, trying to focus only on details that define the subject. I was practicing for detail theme task that started at Shoot & Tell on Friday. What also inspired me was Plato's allegory of the cave. On photography it is possible to study the shadows and maybe even pretend to see the real things. But can we see the Idea?