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 !
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'.