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 The discussion on Thursday was very interesting to me. One portion of the conversation that stood out to me was when talking about optical illusions as well as ambiguous shapes  a girl from Paul's class (unfortunately I do not remember her name) brought up a connection between her art class and the optical illusion with the star-burst and the grid (/gifs/changiziillusion.jpg).  Paul then went on to say how artist are in the business of making optical illusions. I have never thought of an artist as having the job of creating an optical illusion, though obviously an artist can't paint a seemingly 3D picture on a 2D canvas without creating some sort of optical illusion. Then this came to my mind: