in reply to workflow implementation with perl
What do you want to do ? Your question is very vague. FYI: Perl Monks helps those who helps themselves or probably the following links might be of some help to you:
Link1 and Link2
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?
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