One day in the year 1950, Enrico Fermi was having a conversation with his fellow scientists. While they were talking, Fermi asked a very interesting question: Why haven't we been visited by aliens yet? Any advanced civilization with an immodest amount of space technology and expansion should be able to conquer the galaxy in a few million years.
Solutions to the Fermi paradox
Our signals aren't strong enough.
Maybe we aren't searching hard enough; after all, most of our transmissions become indistinguishable from normal cosmic background noise after a few light years. It could be that intelligent life is incredibly rare in the universe, so we need to step up our game in terms of the strength of our signals to be readable to aliens.
The universe is too boring for the alien's theory.
Photo by Erik Mclean: https://www.pexels.com/photo/toy-figure-in-modern-sneakers-on-stairs-5558237/
Maybe conquering the galaxy isn't the greatest thing after all. Think about it If you had the option of living in a simulated reality where everything is perfect—a utopia where you could do whatever you wanted without being constrained by the laws of the universe—would you still choose to live in the normal universe? With nearly unlimited resources, time, and energy, who knows what might happen?
The dark forest theory
The Dark Forest Theory of the Fermi Paradox is an explanation of the observation that despite the size and age of the universe, no signs of intelligent extraterrestrial life have been found. The theory suggests that intelligent civilizations may be actively hiding from one another due to the possibility of hostile contact. This is because any civilization that is advanced enough to detect signs of life from another species will likely be powerful enough to destroy it if it chooses to do so. This fear of destruction leads to a "dark forest" where civilizations hide from one another, refusing to make contact.
The Zoo Theory
This is probably the most unlikely option; it proposes that we are in a zoo where aliens are not permitted to touch us, similar to natural reserves on Earth.
Aliens are trying to communicate, But we are unable to hear them.
For less than a century, humans have been looking for signs of extraterrestrial life using methods that aliens may have forgotten millions of years ago
The possibility that our communication style precisely matches that of an extraterrestrial civilization looks quite slim.
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