They believed that aliens have been keeping our planet under observation and quarantine to avoid causing panic among the human population who are not ready to make first contact with extraterrestrial beings.
Many studies indicate that other forms of life likely exist in other planets. Some propose that aliens might be smart enough to communicate with humans and advanced enough to travel between stars.
However, decades of searching for any signs of extraterrestrial life have turned up nothing. Humans have yet to (officially) find any form of alien life out there, much less intelligent life.
Therefore, researchers from Messaging Extraterrestrial Intelligence International (METI International) considered that intelligent aliens have already known about the existence of Earth and the human race. However, the extraterrestrials have chosen to conceal their presence from humans because they believe that we were unprepared for the reality of their existence.
In their theory, the aliens do not wish to disrupt the existing human culture and society, so they have been treating Earth like a zoo or wildlife research center where they might observe humans, but never interfere until the latter is ready for first contact...read more>>>...
