This is an interesting psychological test.
Move down by one line at a time and read the text only once.
Count the number of letter F in the next text:
FINISHED FILES ARE THE RE-
SULT OF YEARS OF SCIENTIF-
IC COMBINED WITH THE
EXPERIENCE OF YEARS.
How many is there?
What's the result?
How many did you found? 3?
There's 6 of them and this is no joke.
Read the text again.
The explanation follows below.
The brains cannot process the word OF.
Someone who can see 6 Fs the first time is a genius.
3 is normal.
P.S. This was sent to me by e-mail and I translated that from Slovenian (except the green text), so I hope I managed to do it right.