Paleontologist Nick Longrich of the University of Bath, UK, in his article published on The Conversation portal, stated that humanity may be the only intelligent civilization in the universe.
Nick Longrich indicated that the universe is amazingly vast. If we consider the Milky Way alone, there are over 100 billion stars in it. As far as the visible universe is concerned, there are more than one trillion galaxies. Even so, although the "Universe is large, ancient, and has time and space for intelligence to evolve, there is no evidence of it."
According to the paleontologist, our evolutionary history shows indispensable adaptations that go beyond intelligence into the list of photosynthesis and complex cells, which were unique and therefore unlikely events in the history of wildlife development.
"Many critical events in our evolutionary history are unique and probably unlikely. One of them is the bone skeleton of vertebrates, which allows large animals to move around the ground," the article says.
Sometimes living organisms from different groups have developed similar anatomical structures, including eyes, legs and jaws, as well as an aerodynamic body shape in marine animals. This convergence is called convergent evolution, and occurs in organisms that live in similar ecosystems.
As the publication indicates, convergence of complex organs has occurred in living Eumetazoa organisms or real multicellular organisms. This includes all animal species that have a multicellular structure, symmetry, digestive organs, muscles and nervous system.
There are many examples of convergence in the Eumetazoa, but the very appearance of a complex body has proved to be unique. In addition, during the evolution of the Eumetazoa, there were other events that no longer repeated: the appearance of the internal skeleton, sexual reproduction and the development of intelligence.
"Photosynthesis evolved 1.5 billion years after Earth's formation, complex cells – after 2.7 billion years, complex animals – after four billion years and human intelligence – 4.5 billion years after formation of the earth ", explains the paleontologist.
According to Nick Longrich, "The fact that these innovations are so useful but took so long to evolve implies that they are extremely unlikely."
Longrich believes that the adaptations of evolution that led to the emergence of man can be seen as lottery winnings, whose overall probability may be very small.
"Intelligence seems to depend on an unlikely chain of events. But given the vast number of planets, and how an infinite number of monkeys hitting an infinite number of typewriters to write Hamlet, is bound to evolve somewhere. The result unlikely we were, "concluded the paleontologist.