F-Test

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Count the number of 'F's in the following text: Read it only once!





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 "OF".


Incredible or what?
Anyone who counts all six 'F's on the first go is a genius(or a cheat), Three is normal...