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Team out NASAThe Jet Propulsion Laboratory has theorized why we haven’t encountered any yet aliens.
V paper introducing the ‘great filter’ theory, five NASA researchers claim that other civilizations may have existed throughout the history of the universe, but they were all wiped out before they came into contact with us.
The theory expands to suggest that we too may be well on our way to erasing ourselves – or ‘filtering’ ourselves. The bright side is that we can avoid the same fate if we understand this or even how other civilizations destroyed themselves.
The team begins the paper: “Evidence for life should exist in abundance in our galaxy alone, but in practice we have not given any clear confirmation of anything beyond our planet.” So where is everyone?
‘The silence of space beyond Earth reveals a pattern of human limitation and unwavering curiosity.’
“We hypothesize that an existential catastrophe may be upon us as our society progresses exponentially towards space exploration and acts as the Great Filter: a phenomenon that wipes out civilizations before they can meet, which may explain the cosmic silence.”

A California team at NASA’s Jet Propulsion Laboratory has determined that the Great Filter Theory is the reason Earth’s inhabitants have yet to encounter intelligent extraterrestrial life forms.

The theory suggests that while there is a great potential for other intelligent life forms, each one essentially self-destructs before making significant contact with other inhabitants of the planet.
The authors of the yet-to-be-reviewed study write: ‘The key to humanity successfully passing such a universal filter is … recognizing these attributes in oneself and neutralizing them in advance.’
The big filter theory was first proposed in the late 90s by Robin Hanson, an economist at George Mason University.
In September 1998, Hanson wrote‘The fact that our universe seems essentially dead suggests that it is very, very difficult for advanced, explosive, sustained life to form.’
‘Explosive’, used in the way Hanson did, meant a civilization that could achieve cheap spaceflight and the potential colonization of other planets.
Hanson argued that there are some or many things out there that prevent intelligent, flourishing life forms from surviving long enough on their home planet to meaningfully spread to others.
The California co-authors of the recent study — which includes Jonathan Jiang, Philip Rosen, Kelly Lu, Kristen Fahy and Piotr Obacz — theorize that whatever existential threats life on Earth faces, life elsewhere may also be facing them.
These threats have included uncontrollable events such as an asteroid hitting a planet, as well as threats believed to act as self-inflicted civilization killers. Among them are nuclear war, another deadlier pandemic, artificial intelligence out of control and climate change.
Such human “dysfunction,” as the study calls it, can “quickly snowball into the Great Filter.”
Although extinction could come fast and furious, the researchers write, they believe increased human maturity could prevent the last filter.
“History has shown that intraspecies competition and, more importantly, cooperation have led us to the highest peaks of invention. And yet we perpetuate notions that seem the antithesis of long-term sustainable growth. Racism, genocide, inequality, sabotage… the list goes on,” the study says.
Increased understanding on the planet between groups, societies and civilizations – along with some major technological advances – should increase our chances of overcoming the Great Filter, according to NASA scientists.
But Hanson himself somewhat disagrees with this part of the theory.
He said Daily beast that he believes that increased centralized control and management is not the answer.
“In fact, I see excessive centralization of governance as a likely contributor to our future Great Filter,” he told the publication.
He believes that the more decentralized we are, the more likely some of us will survive an Earth-ending event.
If individual pockets of people – such as those engaged in private space travel – manage to survive a pandemic that has shaken humanity or any other end of civilization, they could theoretically persist as part of colonies on Mars or the Moon. .

Robin Hanson, a professor of economics at George Mason University, initially proposed the Great Filter theory in the late 1990s, but disagrees with some of the conclusions reached by the NASA team. He believes that increased centralized governance will hasten the erasure rather than increase our chances of preventing it.

The California-based NASA team is led by Jonathan Jiang, who helped formulate a theory that partly posits increased human understanding and groups working together will help prevent the Great Filter from starting on earth
Others in the field simply believe that the big filter theory doesn’t hold water.
Seth Shostak, an astronomer at the SETI Institute in California, told the Beast: ‘The large filter theory depends on the supposed observational result that there is no one out there.’
“But that conclusion is way too early. We’ve just started looking.”
Wade Roush, a science lecturer and author, said the theory seems “too deterministic.”
It’s as if “the great filter is a law of physics or a single looming force that confronts any growing technological civilization,” he said. ‘We have no direct evidence of such a force.’
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