This optical illusion is amazing. Like Andy, I had to open it in Photoshop to verify its truth. According to the explanation, the illusion takes advantage of the way in which the human visual system evolved to differentiate shapes and find edges, not to make fine distinctions in color.
This entry is part of the kottke.org weblog, of which An entire year is the latest entry.
Within this weblog, this entry belongs in the Cool links categories and was published in September 2002.
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