there is plenty of evidence that aliens already visited earth

XKCD: Settled

Principle of Least Astonishment: Any language that doesn’t occasionally surprise the novice will pay for it by continually surprising the expert


In reply to Re^2: Extraterrestrials haven't visited the Earth yet because: by Erez
in thread Extraterrestrials haven't visited the Earth yet because: by Arunbear

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