Autocroaking

You often like to use carp and croak to issue error messages
These are defined in Carp.pm:

        use Carp qw(carp croak);

Issuing an error message is usually unusual
Why load Carp unless it is necessary?

        if (some unlikely error condition occurs) {
          require Carp;
          Carp::croak("Millions for defense, but not one cent for tribute");
        }