Read this sentence:
FINISHED FILES ARE THE RESULT OF YEARS
OF SCIENTIFIC STUDY COMBINED WITH THE
EXPERIENCE OF YEARS.
Now count the F’s is that sentence. Count them ONLY ONCE.

Do not go back and count them again.
ONLY READ BELOW ONCE YOUR DONE FOR SURE!
Answer:
There are 6 F’s in the sentence. One of average intelligence finds 3 of them. [...]