[Captain Rhino]

In 1950, while working at Los Alamos National Laboratory, the physicist Enrico Fermi had a casual conversation while walking to lunch with colleagues Emil Konopinski, Edward Teller and Herbert York. The men lightly discussed a recent spate of UFO reports and an Alan Dunn cartoon facetiously blaming the disappearance of municipal trashcans on marauding aliens. They then had a more serious discussion regarding the chances of humans observing faster-than-light travel of some material object within the next ten years, which Teller put at one in a million, but Fermi put closer to one in ten. The conversation shifted to other subjects, until during lunch Fermi suddenly exclaimed, "Where are they?" (alternatively, "Where is everybody?") One participant recollects that Fermi then made a series of rapid calculations using estimated figures (Fermi was known for his ability to make good estimates from first principles and minimal data...) According to this account, he then concluded that Earth should have been visited long ago and many times over.

Fermi's Paradox: http://en.wikipedia.org/wiki/Fermi_paradox

Where are they?

[Brett66]

Not enough data to come to a conclusion.....

[Norman Bates]

I thought Fermi’s Paradox, or at least part of it, was about why the night sky was dark.