Intelligence Test

This has got to be one of the most interesting intelligence tests I have ever seen. It's very short, so try it. You may be amazed.
Don't cheat! Because if you do, the test would be no fun.
I promise, there are no tricks to the test.

Read this sentence:

FINISHED FILES ARE NOT THE RE-
SULT OF YEARS OF SCIENTIF-
IC STUDY COMBINED WITH
THE EXPERIENCE OF YEARS.

Now count ALOUD the F's in that sentence.
Count them ONLY ONCE: do not go back and count them again.

See below for answer...

ANSWER:

There are six F's in the sentence. 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 and not F's. Pretty weird, huh?

It fools almost everybody.