Because some math illiterate always tries it with 2.5 to see if a number is divisible evenly with it... ala: if ($num/2.5 == int($num/2.5)) {print "$num even!\n":} Evil!

If they didn't understand it when they did that, how do you explain to them why they are wrong? I usually resorted to "Mr. G? Kelly has a question about her code..." =)

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