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Please read this sentence.
FINISHED FILES ARE THE RE-
SULT OF YEARS OF SCIENTIF-
IC STUDY COMBINED WITH
THE EXPERIENCE OF YEARS.
Count the F's.
How many did you find?
To see the answer, scroll down the page until it appears.
Dave
PS: Thanks to Don Brown for forwarding this. It's a great puzzle!
***Solution
There are six F's in the sentence.
There is no catch.
I found three. I went back and counted and recounted, and I was sure there were just three. So I wrote a script to see what was going on. It said there are six! Mystifying.
Then I improved the script to show me where the F's were.
ct = 0;
s = "FINISHED FILES ARE THE RE-SULT
OF YEARS OF SCIENTIF-IC STUDY COMBINED
WITH THE EXPERIENCE OF YEARS.";
for i = 1 to sizeof (s) \{
  if s [1] == 'F' \{
    dialog.alert (s);
    ct++};
  s = string.delete (s, 1, 1)};
dialog.alert (ct)
Right on, there is no catch.