Sometimes I wish that Perl could be even more sensitive about this, and issue the same sort of warning for cases like: 
my $variable = "current value";

while ( whatever() ) {
   ...
   my $variable = "new value";  # if "my" was just typed by habit here
   ...
}

print $variable;  # then there's probably a bug when we get here

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At present, perl does not warn about that sort of situation, and on the whole, it's probably better that it doesn't. So I just have to watch myself...

In reply to Re: Explanation of warning created when over using "my" by graff
in thread Explanation of warning created when over using "my" by Tatnall

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