Philosophy of Illusions

Thurston_magician_posterResearchers from Edinburgh University have claimed to show that stage illusionists and magicians rely on the phenomenon of “change-blindness” for their tricks. Although we may feel that we normally have visual awareness of an entire stable scene all at once, experiments show that subjects can be surprisingly bad at noticing large-scale changes that occur right before their eyes. In fact, our eyes “saccade” around a scene, very rapidly shifting a very narrow point of focus. Changes that occur during such shifts and outside the narrow range of focus will not be noticed by the subject.

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