Several other people have said "You don't use Perl." One or two have articulated why you don't use Perl, so I thought I'd bring together some of the reasons:

• No operating system is designed to be reliable enough for use in life-safety applications, and all disclaim (or ought to disclaim) their fitness for such purposes in their end-user license agreements.
• The licenses under which Perl is distributed expressly disclaim all liability, including fitness for a particular purpose. That is the only possible way to provide software free (as in beer).
• This means that anyone using off-the-shelf software for life-safety-critical applications assumes the full liability by using such software for purposes it cannot be guaranteed to safely fulfill.
• Some projects just should not be automated, and some problems cannot be solved with computers. In the few places where computers are trusted with life-safety issues, they are invariably custom-built from both a hardware and software perspective, and do not use a general-purpose operating system of any sort.

Enough said.

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