A card trick that lasts four or five minutes, for example, might have 20 pages of detailed text to describe exactly where to look, what to say, what to do and so on. And a lot of the understanding of a trick has to be from the perspective of the audience.
Our brains filter out a huge amount of the mass of sensory input flooding in from our environment. Kuhn explains that we see what we expect to see and what our brains are interested in. "Our visual representation of the world is much more impoverished than we would assume. People can be looking at something without being aware of it. Perception doesn't just involve looking at an object but attending to it."
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