>>4Doesn't stuff like
sub Sensorium; # PERL by Example p. 351 Forward declaration clue you in?
The dude is literally mentally retarded, IQ 60 or something like that. That's why he's using all these crutches, reminders to himself where to find how forward declarations work and so on. And when with all those crutches he finally manages to create some sort of trivial program, he's overwhelmed by the feeling of accomplishment and wants to share it with everyone.