c:\test>perl
use strict;
use warnings;
sub install{ print 'hi' }
*upgrade = \*install;
install();
upgrade();
^Z
hihi
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.