in reply to
different between die and exit
Also, die (by default unless caught) returns a non-zero exit status to the operating system, whereas exit (by default) returns a zero exit status.
Update: corrected as per ikegami's comment.
It makes no sense to talk of "by default" for die. There's no argument to specify the exit code, so it can't be omitted to use the default.
Also, die always returns non-zero ($! || ($?>>8) || 255).
I make decisions, and my brain carries them out
My brain makes the decisions, and I observe them (if I'm lucky)
I make some decisions, and my brain makes others
My spouse makes decisions and I and my brain carry them out
I wrote a program to relieve me and my brain from the burden of decision-making
The black-helicopter people project the decisions into my brain and then I do as ordered
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