Yes, it's beginning to make sense: "Barrie Slaymaker calls closures "inside-out objects:" objects are data that have some subroutines attached to them, and closures are subroutines that have some data attached to them."

sub make_counter {
        my $start = shift;
        return sub { $start++ }
    }

    my $from_ten = make_counter(10);
    my $from_three = make_counter(3);

    print $from_ten->();       # 10
    print $from_ten->();       # 11
    print $from_three->();     # 3
    print $from_ten->();       # 12
    print $from_three->();     # 4
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This example helped me understand a lot better.