this is one of my favorites. you might automatically say down but stare at it a little longer ... is it going up now?
YOU ARE READING
STRANGE AND AWESOME ILLUSIONS
RandomThe picture should be descriptive enough. WARNING: if you get headaches easily, I suggest you DO NOT READ THIS BOOK.
UP OR DOWN
this is one of my favorites. you might automatically say down but stare at it a little longer ... is it going up now?
