Background

According to inferred history, the Italian physicist Enrico Fermi at a lunch with friends in the year 1950 came up with the idea:

• There are no other Alien Civilizations in the Universe, or
• The Earth's inhabitants are the most advanced technology civilization. 

Enrico further explains, at his lunch, something to the affect:

The problem with believing that the Earth is the most advanced, is the Earth's population of mankind has only been around for a short time, so taking into consideration the age of the proposed Universe at some 13.8 billion years, then if there are Alien Civilizations, then they would have already set up an empire easily in 100 million years. The empire should include the Earth easily by now, as 100 million years is a very short time compared to 13.8 billion years.  Enrico reportedly then asks the question of "where is everybody?".

The Search for Extraterrestrial Intelligence (SETI) and Space.com have two interesting quick reads on the subject:

"Fermi Paradox: Where are the Aliens?" from www.space.com
SETI - Fermi Paradox

Amendments to the Fermi Paradox Theory?

There have been a few amendments and proposals to add to the theory, which the reader can easily find through Internet Searches and reading the links provided. 

What to read next?

See: (a) Time and Time Travel, (b) Time Domains, (c) Kingdom of God, (d) Singularity and the Big Bang Theories, (e) E=mc²,  (f) Ten Dimensions of the Universe, (g) Age of the Earth, Periods that Developed Life, Heavens, (h) Evolution (i) Great Pyramid (j) UFO/UWO