How many F's did you find?

The sentence was:

FINISHED FILES ARE THE RE-
SULT OF YEARS OF SCIENTIF-
IC STUDY COMBINED WITH
THE EXPERIENCE OF YEARS. 

	One 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.

There is no catch. Many people forget the "OF"'s. 
The human brain tends to see them as V's. It fools almost everybody.