Quick Eye Exam...This will blow your mind...!Just do it - don't cheat!!!!!!!!!!!!Try this its actually quite good.But don't cheat!

Count the number of F's in the following text:
FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARSManaged it?Scroll down only after you have counted them!

OK?How many?

Three?

Wrong, there are six - no joke!Read again!
FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS
The reasoning is ...The brain cannot process the word "OF".Incredible or what?Anyone who counts all six F's on the first go is a geniusThree is normal.