in reply to How does Lingua::tlhInganHol::yIghun work?
See perlfilter for info on source filters, as well as Filter::Simple (as mentioned by bluescreen above) for a simple way to create source filters, and Filter::Util::Call for a not-so-simple way.
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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