The previous example sends a spurious warning message because the former assumption breaks down ... incomplete assumptions about what constitutes a "single script".

Not quite correct. Lexical variables don't live in the symbol table, they have their own scratch pads. Thus: 

  my $foo;

[download]
and 
  $main::foo;

[download]
are two different variables, and hence the warning msg.

In reply to Re: The Law of Inconsistent Assumptions by qumsieh
in thread The Law of Inconsistent Assumptions by dimar

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