perception

http://www.echalk.co.uk/amusements/OpticalIllusions/illusions.htm a series of excellent optical illusions

(Alan Kay's) [|clever illustration] of how we mis-perceive the world (rotating a table) resonates with the other messages in a haunting manner

> //We see things not as they are but as WE are//

A screenshot would help here!!

change blindness and inattention blindness are well established

example: "‘Gorillas in our Midst’ (Simons, D. and Chabris, C., //Perception//, 1999, **28**), subjects were asked to perform a task that involved watching a video of a casual basketball game that lasts for about a minute. The task involves counting the number of consecutive passes between members of the one of the teams. While the basketball is being thrown from player to player, something unexpected takes place: a person dressed in a black gorilla-suit walks through the play, stops briefly in the centre of the picture, thumps his chest, and then walks off. Although most subjects correctly record the number of passes made by the team, at least half of these subjects fail to notice the gorilla-suited interloper, who is visible for about nine seconds. When shown the video sequence a second time they are amazed to observe what they had previously overlooked"

example: "a picture is displayed of a couple in the foreground with a number of buildings in the background. A brief flicker interrupts the display, which then returns with one substantial change - a large building in the background is no longer visible. This display remains visible for a second or so, and then again the flicker occurs and the switch is made, returning to the original picture. It may take many such alternations between images before the subject finally notices the large scene change not previously attended to; again, this produces surprise on the part of the subjects, when they realise they have overlooked an apparently obvious change. "

reference: [|Is the Visual World a Grand Illusion?] (Book Review)

UNFINISHED (interpretation of above illusions)