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The two orange circles are exactly the same size; however, the one on the right appears larger. The Ebbinghaus illusion or Titchener circles is an optical illusion of relative size perception.
LSI Denny J.A. Indonesian Survey Circle (read: LSI Denny J.A) is a political consultant and survey institute in Indonesia.LSI Denny J.A was established in 2005 by a group of public opinion makers, researchers, columnists, and survey specialists who have a long history of involvement in the field of research.