http://www.perlmonks.org?node_id=75599


in reply to (Ovid - accidental obfuscation?)Re: Perverse Unreadable Code
in thread Perverse Unreadable Code

do any monks use English for any production code?

I don't even use it for test code :) It can make a script slower, especially if you are using regular expressions.
Right from the POD:

=head1 BUGS This module provokes sizeable inefficiencies for regular expressions, due to unfortunate implementation details. If performance matters, consider avoiding English.

This is mainly (the RE part) because it brings $& $' and $` into the game.

Cheers,
KM