dont cheat!

 its actually quite good.

 Quickly 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!

Down

 Down

 Down

 Down

 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

 genius, Three

 is normal.