So here we are, our eyes boggling

ALZHEIMER'S EYE TEST

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 are there then?

  WRONG, There are 6 -- no joke.

  READ IT AGAIN !

 Seriously, go back and read again.

  The reasoning : 

  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.