My basic rule is if the relative risk isn't at least 3 or 4, forget it.
It must be a very dour and pessimistic astronomer indeed who seriously doubts that there must be countless numbers of intelligent civilizations scattered throughout the universe on other planets which are orbiting around other stars. An attitude which asserts that man is the only intelligent life form in the universe is intolerably arrogant today ... anyone who holds such an opinion today is, fortunately for those who like to see some progress in human conceptions, something of an intellectual freak equivalent to a believer in the Flat Earth Theory.
It certainly is an embarrassing fact, then, for certain classical scholars to have to face, that the Platonic Academy continued to function in Athens for over nine hundred years.
It should not surprise us that there must be other civilizations in our galaxy and throughout the entire universe.
