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I guess if our brains gave meaning to randomness and what we see is what we expect to see, we would never be able to see anything in a different light.  Although in regards to optical illusions, once we look hard enough aren't we able to interpret what seems like a "simple picture" in multiple different ways? I am willing to accept that information can be interpreted in multiple fashions, but that makes me think of an interpretation of a poem or a metaphor in a story; everyone's take on it is supposed to be little different.  In regards to objects we see daily such as a chair or a lightbulb, we all must be interpreting that image in a similar fashion in order to know what it is, but that doesn't mean we all think alike.  Once I think I've sort of understood a part of this topic, another part confuses me, it's a never ending cycle of learning.