Quick Eye Brain test

>>>> Quick Eye Exam...
>>>>
>>>> This will blow your mind...!
>>>>
>>>> Just do it - don't cheat !!
>>>>
>>>> Try this it's actually quite good.
>>>>
>>>> But don't cheat !
>>>>
>>>> Count the number of 'F's in the following text:
>>>>
>>>> FINISHED FILES ARE THE RE-
>>>> SULT OF YEARS OF SCIENTIF-
>>>> IC STUDY COMBINED WITH THE
>>>> EXPERIENCE OF YEARS
>>>>
>>>> Managed it?
>>>>
>>>> ............ Scroll down only after you have counted
>>>> them!
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> OK?
>>>>
>>>>
>>>>
>>>> How Many?
>>>>
>>>> Three?
>>>>
>>>>
>>>>
>>>>
>>>> Wrong, there are six - no joke!
>>>>
>>>>
>>>> Read again!
>>>>
>>>> FINISHED FILES ARE THE RE-
>>>> SULT OF YEARS OF SCIENTIF-
>>>> IC STUDY COMBINED WITH THE
>>>> EXPERIENCE OF YEARS
>>>>
>>>>
>>>> The reasoning is further down...
>>>>
>>>>
>>>>
>>>> The brain cannot process the word "OF".
>>>> Incredible or what?
>>>>
>>>> Anyone who counts all six 'F' on the first go is a
>>>> really good, Three is normal.