You have [ sort {$b <=> $a} keys %{$hash}; ];.
Note the first semicolon (;) inside an anonymous array, which is a syntax error.
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.