Counting the "F's" Answer

There are six.

FINISHED FILES ARE THE RE
SULT OF YEARS OF SCIENTI
FIC STUDY COMBINED WITH
THE EXPERIENCE OF YEARS

For some reason, the brain doesn't process the "F" in "of".

A person of average intelligence finds three of them.

If you spotted four, you're above average.

If you got five, you can turn your nose at most anybody.

If you caught six, you are a genius.

Sissy, from Sisu (a great read, by the way) provided this link.