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... HOW MANY ? WRONG, THERE ARE 6 -- no joke. READ IT AGAIN ! Really, go Back and Try to find the 6 F's before you scroll down. 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.