11/8    http://www.patmedia.net/marklevinson/cool/cool_illusion.html
        work safe.
        \- weird to see "mark levinson" in a context other than highend
           speakers/audio. --psb, also not the speaker co.
           \_ Not really.  Mark Levinson was married to Kim Cattrall while
              Sex in The City was running, so his named appeared in a number
              of non-audio contexts.
        \_ this is the coolest illusion I've ever seen
           \- have you seen the pawn on the greyscale chessboard?
              that one is pretty dramatic too.
              this is also pretty good:
              http://home.lbl.gov:8080/~psb/CoolPix/continuous-motion.jpeg
              this is also interesting:
              http://home.lbl.gov:8080/~psb/CoolPix/Christ.jpg
           \_ This one isn't that dramatic but I had to crop the colors to
              prove to myself it was true:
           http://web.mit.edu/persci/people/adelson/checkershadow_illusion.html
              What is this "pawn on chessboard" thing? I vaguely remember
              something like that.
              \- oh yeah, that is the one i meant. i guess it wasnt a pawn.
                 that one is mindboggling. literally.
        \_ I wonder if the military makes some use of these illusions, or if it
           trains its personnels to avoid being tricked by similar illusions.