When thinking about whether we are alone in the universe or not, it seems to me that it isn’t a question of whether we (intelligent life) are rare? Or are we first/early compared to other intelligent life? Or are we simply too far away? But rather a question of enduring. Are intelligent civilizations enduring enough to travel beyond their solar system or galaxy?
The Fermi paradox is the discrepancy between the lack of conclusive evidence of advanced extraterrestrial life and the apparently high likelihood of its existence. Scientists today are looking for life in our very own solar system. It’s possible, in our vast universe, that our quest for life beyond earth may be as close as Saturn’s moon, Enceladus. It would probably b\e microbes, too small to see without a microscope, but that would still suggest that life is way more abundant than even most scientists would have imagined just a few years ago.
But I’m more a believer that the reason we don’t see alien life is for two reasons, the first being distance. Quite simply, even the nearest galaxy to our Milky way is astronomically far away. “The closest known galaxy to us is the Canis Major Dwarf Galaxy, at 236,000,000,000,000,000 km (25,000 light years) from the Sun. The Sagittarius Dwarf Elliptical Galaxy is the next closest , at 662,000,000,000,000,000 km (70,000 light years) from the Sun.” If intelligent life started sending messages to us from the Canis Major Dwarf Galaxy 10,000 years ago, it would still take 15,000 years to reach us if they could do the unlikely task of sending that message at the speed of light… and the crazy thing is, why would they send a message our way? 10,000 years ago there was no evidence coming from earth that we are a worthy planet to send a message to!
And the second reason we don’t see any intelligent life ‘out there’ in the universe is The Great Filter. Either it is extremely rare and difficult to get beyond simple, unintelligent multicellular life, or civilizations themselves getting to multi solar system travel capabilities are extremely rare. This second point is my belief. Civilizations are not enduring enough. It took Homo sapiens 300,000 years to become a scientifically intelligent life form that attempted to leave our planet and explore our solar system. During this time, we’ve been brutal to each other. We’ve created weapons of mass destruction and quite literally drawn lines in the sand to keep us separate from our brothers and sisters.
We’ve created religions that don’t like each other and think all other Gods are unworthy of following. We’ve created borders that keep ‘others’ out. We’ve created governments that are more interested in power than in caring for fellow humans. We’ve created corporations that worry more about profit than about caring for our planet. All the while we also create technologies that threaten the longevity of humanity. As technological innovations occur, it becomes easier for individuals and small groups to terrorize larger groups. It becomes easier for a single unstable person to threaten larger and larger populations around our planet.
What happens 50 years from now when a kid can create a devastating bomb or virus in their basement with readily available resources? Is that a world where we continue to advance technologically? Albert Einstein is often quoted as having said: “I don’t know with what weapons World War III will be fought, but World War IV will be fought with sticks and stones“. In other words, we will destroy ourselves and become far more primitive, much less advanced. Imagine our world with no power grid, and no internet. How long would it take to get back to where we are now? What if the next pandemic is far more deadly and has us living like subsistence farmers, keeping ourselves in tiny communities, afraid of outsiders. How many hundreds of years would we be set back, and would we be trying to explore the cosmos when survival is our greatest concern?
I tend to be an optimist, and I’m excited about the future ahead of us. I think my kids have the potential to live healthy, productive, and cognitively sound lives past 100 years of age. I think there will be universal basic income for every human alive, and that things like childhood starvation and extreme poverty could come to an end. Technological advances could make us live healthier, longer, more fulfilling and creative lives. But I also fear that greed, power, and beliefs in bad ideas could corrupt us, and undermine our potential. Are we 50, 100, or 1,000 years away from ravaging our planet or at least the human race? Or are we a species that will populate other parts of our galaxy?
If I was an alien who came to explore earth today, I’m not sure I’d report back to my planet the the inhabitants are intelligent? I’m not sure I’d consider humans technologically advanced enough to seek contact? I’d be conveying that earthlings are as likely to destroy themselves as they are to send someone out of their own solar system. I’d send a message home and say, ‘Let’s leave them alone for now and see what they can do in another couple hundred of their earth years?‘
‘Let’s see if this race of humans will endure?‘
