The Fermi Paradox refers to an understanding of the observable universe that appears inherently paradoxical. Put forth by Enrico Fermi, a physicist, the paradox holds that the evidence of extraterrestrial life is incongruous with the likelihood of its existence. In simpler terms, the universe is very big and very old, and there are tons of planets that could support life as we know it. However, there is absolutely no observable evidence of any intelligent life in the universe outside of our own. This paradox, then, begs the question: where is everyone? If we’re alone in the universe, why? And if we’re not, why can’t we find anyone? Today, we’re looking at ten chilling possible answers to these questions.
Virtual Reality is Better Than Real Reality
Humans are just now beginning to develop virtual reality that proves entertaining over a long period. However, imagine a sufficiently advanced alien race that has created virtual reality that is indistinguishable from actual reality. Such a species might find it is much more interested in exploring virtual realms than the real world. Much like the plot of the movie The Matrix, a sufficiently detailed virtual world would be indistinguishable from the real one. As such, it might be the case that advanced life forms are out there, they’re just floating in sensory deprivation tanks and living in a virtual utopia.
The Universe Is a Simulation
Along a similar line of thinking is the theory that our universe itself is a simulation. While scientists and philosophers debate the point, it makes sense: a brain floating in a jar couldn’t tell this world from a dream. Indeed, our world may very well be entirely simulated, and we could be programs in that system. Thus, the lack of life in the universe would be by design: the simulation is only interested in humans. Why this would be the case, however, is unclear. Our universe is unfathomably massive, and we will never explore even one percent of it.
Intelligent Life is Very Rare
The Fermi Paradox is constructed under the assumption that intelligent life would arise if conditions like those on Earth were present on another planet for long enough. Maybe, however, that assumption is wrong. Maybe so many more things must fall in place before intelligent life can evolve and prosper that it’s a mathematical impossibility. Humans may be truly, utterly unique in the universe. The entire vast, cold reaches of space are quiet and uninhabited, making us the sole species that comprehends the cosmos.
No One Else Has Made It This Far
Maybe we aren’t alone at all, but we’re by far the most advanced species to arise in the galaxy. Perhaps we are unique in our ability to leave our own atmosphere, and other intelligent species haven’t pieced that together. Or, perhaps, they simply don’t care to. This solution holds that humans are the only intelligent life that wants to rocket away from the safety of home and explore the dark, quiet cosmos. Why would any other species want to do the same, when they would have no evidence of our existence, either?
The “Sustainability” Solution
Perhaps expanding throughout the stars isn’t all that easy to do. We’ve assumed, up to this point, that colonizing planets would be like colonizing countries on Earth. However, what if it’s too difficult to amass the resources to travel between stars? Perhaps other species have tried to expand, only to collapse under the pressure. Keeping food stores and fuel reserves high could very well be the bottleneck to space exploration.
Aliens are Commonplace but Unseen
Maybe aliens are everywhere. Not on Earth, of course, we’re not suggesting your neighbor is from Mars. No, maybe aliens are common in the galaxy, but we just don’t know what to look for. We tend to use radio signals to communicate, and we’ve assumed aliens would, too. However, it’s possible that aliens are just too far away for us to intercept their signals. Out of a range of a few hundred light years, radio signals become gibberish. Or, even more likely, advanced alien life doesn’t use radio waves at all. It’s possible that we simply haven’t thought of the kinds of communication they use. As such, messages could bounce past Earth every day and we would have no clue.
The “Zoo” Hypothesis
On the same track as the previous solution, the Zoo Solution holds that aliens see us. We just don’t see them. This solution posits that maybe aliens are observing us, unwilling to make contact. They’ve perceived our species as primitive, and as such want to simply watch us develop. Or, perhaps something more sinister is going on. Perhaps an advanced race is acting as zookeeper for all intelligent life, monitoring advancements. This zookeeper could be stymying attempts to explore the galaxy in order to protect its own interests. This could explain why we see no evidence of intelligent life in the galaxy.
The Vast Time Frame of the Cosmos
The galaxy is old, and the universe is even older. Both will be around for countless epochs to come: we simply can’t fathom the cosmic scope of time. It’s possible that we’re not separated from alien civilizations by distance, but instead by time. Perhaps great empires have risen in the galaxy, only to collapse in eons past. We haven’t seen any evidence of their great empires because they’re already crumbled to dust. Perhaps, a million years from now a fledging Solar empire will find odd artifacts of our civilization and wonder who we were.
Aliens are Too Violent to Progress
There are a host of theories referred to as “great filters,” loosely defined as things that stop life from achieving interstellar travel. One such filter would be war. Humans are warlike in some ways, and rational in others. Our odd evolutionary niche as something between predator and prey gives us an odd relationship with violence. However, complex life is generally carnivorous, or at least omnivorous. As such, we could presume that intelligent life would generally be at least somewhat aggressive. What if that same spirit that drives living things to advance is the one that drives them to destroy each other? It’s quite possible that intelligent life has simply bombed itself out of existence before taking to the stars. It’s not unreasonable: humanity still has a chance to do so with nuclear war. Only time will tell if we manage to colonize other planets and visit distant stars before we destroy ourselves.
The Fermi Paradox isn’t Really a Paradox
The most unsettling answer to the Fermi Paradox is that it isn’t a paradox at all. What if we’ve simply been looking for the wrong things? Alien life may just be too truly alien to detect. Perhaps alien species don’t communicate in ways we would even perceive as communication. Perhaps life can develop in ways we don’t understand, and that life values things we don’t understand. It could be that attempts at contact have been made but have gone unnoticed. Maybe if we just knew what to look for, we might find out that alien life is closer than we could have expected.
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