Can the intellect be the result of natural selection, or it came with impossible odds, forever changed the course of history? Perhaps the answer to this difficult question could answer the mystery about the possibility of the existence of the Universe our brothers on reason are looking for, but I can’t find scientists from all over the world. As is known, the probable events occur frequently, incredible rarely or only once. In any case, the evolutionary history of mankind shows that many of the key adaptation manifested on Earth only in the form of intelligence, but in the event of difficult cells, photosynthesis and animals was a unique, isolated events, and therefore highly unlikely. Our evolution may have been similar to winning the lottery, but only with a much less likely chance of winning than usual. If so, are we really alone in the Universe?
Is there life on other planets?
The universe is amazingly huge. The milky Way has over 100 billion stars, and the visible universe has about a trillion galaxies that make up a tiny part of the universe that we can see within our planet. Even if habitable worlds are extremely rare, a huge number of planets in the Universe implies that the cosmos is literally teeming with life. So where is everyone? This question is the essence of the so-called Fermi paradox:the universe is big, old and huge, we reason, there is no evidence that we are not alone. Maybe it’s all in the mind? Can it be something out of the ordinary?
It is well known that evolution sometimes repeats itself, giving different types of same features. A striking example of such behaviour of nature can be representatives of an extinct Australian marsupial of thylacine, very similar in their characteristics to a kangaroo. So,thylacine largely looked like wolves, their key feature was the presence of abdominal pouch for carrying offspring,the presence of this quality comes from an entirely different mammalian species.
Other outstanding examples of the impact of convergence include dolphins and the extinct ichthyosaurs, which have developed similar forms in order to glide through the water. The same applies to birds, bats and even pterosaurs, which converged separately from each other developed the ability to fly.
The most critical events in our evolutionary history are truly unique events. One of the clearest of evidence is the existence of a solid skeleton in vertebrates, allowing the animals easily change their location with respect to the ground. Eukaryotic cells that make up the bodies of all animals and plants evolved only once in the entire history of its existence; the same can be argued about sexual reproduction, and even about photosynthesis. In addition, the same count can be entered and the emergence of human intelligence and cognitive abilities. Thus, according to an article published on the portal livescience.comconvergence, apparently, is the universal rule of our universe, making the evolution of probability. But at a time when we are trying to find incoherent events becomes clear that complex adaptations are the least repeatable and even unlikely. Moreover, these events are independent from each other.
So, people could not evolve as long as the fish are not “invented” to develop their skeletal system, allowing them to one day crawl out on land. Bones could not develop exactly as long as in nature there were complex animals, consisting of groups of individual cells, at some point in time decided to unite for the formation of still more complex organism. So, step by step, gradually you can calculate that all life on Earth could only have come from one ancestor, which arose as a single event among the same random phenomena. So, life could arise only once?
Taking long millions and billions of years, evolutionary processes could create a narrow goal of natural filters, which made the possibility of our existence is similar to winning the lottery again and again and again. With this approach, it is estimated that the probability of development of life and intelligence in the Universe is 1 in 10 million. If you consider that a number of complex adaptations may be even less likely, the probability of development of intelligence decreases to 1 to 100 trillion. In this case, you may well be the only intelligent life in the galaxy or even the visible Universe.