Thank you very much tye for your explanation.

I try to think this one step ahead.

Consider this simple example:

my %hash;

foo(\%hash);

bar(\%hash);

sub foo{
    my $ref = shift;
}

sub bar {
    my $ref = shift;
}

# perhaps many more
[download]

So a cleverle might come and say: "Passing around these refs and dereferencing them all the time is a pain" - i make it so instead:

our %hash;

foo();

bar();

sub foo{
    our %hash;
}

sub bar {
    our %hash;
}
[download]

IMHO this idea is, with all due respect, debatable. Or it is against the pure doctrine, as you like.

My best regards, Karl

P.S.: Daddy says globals are the root of all evil ;-)