Above this text is a SciFi art that portrays the interstellar war. So could the firstborn take all the reason for this kind of behavior between hypothetical intelligent space races? The idea of this version of the Fermi paradox is that every single planet has space for only one intelligent race. The origin of this theory is that young intelligent species and young civilizations cannot accept other intelligent species. And that causes the war between species. So those intelligent species try to destroy each other because they cannot accept competitors. When we are looking at human evolution, there is one remarkable thing. When a new member is born in the human evolution its predecessor is lost. So is it possible that this thing can happen on a galactic scale? Could the firstborn civilization destroy all other civilizations? The thing is that ability and will are not the same thing. And if some civilization destroys all its competitors that might cause this kind of civil...