in reply to NULL Variables
my $x; # this var is undef by default
my $xx = undef; # set the var with a undefined value
There is no Extraterrestrial life
There aren't any suitably capable Extraterrestrials
Interstellar travel is too difficult
We're too uncool / not worth the trouble
What do you mean they haven't visited?
Results (476 votes). Check out past polls.