Actually, the use strict pragma and the package statement are not that different. 
use strict;
# strict is on.
{
   no strict;
   # strict is off
}
# strict is on.

[download]
package Foo;
# Currently in package Foo.
{
   package Bar;
   # Currently in package Bar.
}
# Currently in package Foo.

[download]

You can't have two current packages at the same time, just like you can't have two strict states at the same time.

In reply to Re: Use of Carp outside of package won't compile... by ikegami
in thread Use of Carp outside of package won't compile... by memnoch

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