Count every "F" in the following text: FINISHED FILES ARE THE RE SULT OF YEARS OF SCIENTI FIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS... (SEE BELOW) HOW MANY ? ...................... 3? WRONG, THERE ARE 6 -- no joke. READ IT AGAIN ! The reasoning behind is further down. The brain cannot process "OF". Incredible or what? Go back and look again!! Anyone who counts all 6 "F's" on the first go is a genius. Three is normal, four is quite rare.