Do you see the grey circles? Edward H. Adelson Checker-shadow illusion: The squares marked A and B are the same shade ol gray. I %%»*# # %%•*# $ %% # %%•*# § !%•## D #|||%«##$|%«##||%* !%•## % iw# I !%•## I # !%### # %%•*# I !%##! <- not a gif ENJOYTHE MIND F*CKN!,funny pictures