Great Filter
E31694
concept in astrobiology
concept in philosophy of science
hypothesis
proposed solution to the Fermi paradox
The Great Filter is a proposed explanation for the Fermi paradox suggesting that one or more extremely improbable steps in the evolution of life or civilizations drastically limit the number of advanced, spacefaring societies in the universe.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Great Filter hypothesis | 3 |
| Great Filter canonical | 2 |
| Great Filter explanation of the Fermi paradox | 1 |
| The Great Filter | 1 |
| the Great Filter hypothesis | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T245868 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Great Filter Context triple: [Fermi paradox, relatedConcept, Great Filter]
-
A.
Fermi paradox
The Fermi paradox is the apparent contradiction between the high probability of extraterrestrial civilizations existing in the universe and the lack of evidence or contact with them.
-
B.
Drake equation
The Drake equation is a probabilistic formula used to estimate the number of technologically advanced extraterrestrial civilizations that might exist in our galaxy.
-
C.
Pale Blue Dot
"Pale Blue Dot" is a popular science book by Carl Sagan that reflects on humanity’s place in the universe, inspired by the famous Voyager 1 photograph of Earth from deep space.
-
D.
The Cosmic Connection
The Cosmic Connection is a popular science book by Carl Sagan that explores humanity’s place in the universe and the possibility of extraterrestrial life.
-
E.
The Shape of Things to Come
The Shape of Things to Come is a 1933 science fiction novel by H. G. Wells that presents a speculative future history of the world, exploring global war, social collapse, and the eventual rise of a rational, technocratic world state.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Great Filter Target entity description: The Great Filter is a proposed explanation for the Fermi paradox suggesting that one or more extremely improbable steps in the evolution of life or civilizations drastically limit the number of advanced, spacefaring societies in the universe.
-
A.
Fermi paradox
The Fermi paradox is the apparent contradiction between the high probability of extraterrestrial civilizations existing in the universe and the lack of evidence or contact with them.
-
B.
Drake equation
The Drake equation is a probabilistic formula used to estimate the number of technologically advanced extraterrestrial civilizations that might exist in our galaxy.
-
C.
Pale Blue Dot
"Pale Blue Dot" is a popular science book by Carl Sagan that reflects on humanity’s place in the universe, inspired by the famous Voyager 1 photograph of Earth from deep space.
-
D.
The Cosmic Connection
The Cosmic Connection is a popular science book by Carl Sagan that explores humanity’s place in the universe and the possibility of extraterrestrial life.
-
E.
The Shape of Things to Come
The Shape of Things to Come is a 1933 science fiction novel by H. G. Wells that presents a speculative future history of the world, exploring global war, social collapse, and the eventual rise of a rational, technocratic world state.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
concept in astrobiology
ⓘ
concept in philosophy of science ⓘ hypothesis ⓘ proposed solution to the Fermi paradox ⓘ |
| addressesQuestion | Why we do not observe many advanced extraterrestrial civilizations ⓘ |
| coreIdea | There exists at least one extremely improbable step in the development from lifeless matter to advanced spacefaring civilization ⓘ |
| dependsOn |
assumptions about feasibility of interstellar colonization
ⓘ
assumptions about typicality of human civilization ⓘ |
| earlyFilterDefinition | improbable steps that occur before or during the emergence of intelligent life ⓘ |
| epistemicStatus | speculative ⓘ |
| exampleOfEarlyFilter |
emergence of eukaryotic cells
ⓘ
evolution of complex multicellular life ⓘ evolution of intelligence ⓘ origin of life ⓘ |
| exampleOfLateFilter |
failure to achieve sustainable space colonization
ⓘ
global ecological collapse ⓘ nuclear war ⓘ uncontrolled artificial intelligence ⓘ |
| field |
SETI research
ⓘ
astrobiology ⓘ existential risk studies ⓘ futures studies ⓘ |
| hasAlternativeName |
The Great Filter
ⓘ
linked to:
Great Filter
|
| hasComponent |
early filters
ⓘ
late filters ⓘ |
| hasDebate |
whether multiple moderate filters can replace a single extremely hard step
ⓘ
whether the filter is mostly in the past or in the future for humanity ⓘ |
| hasScenario |
filter distributed across many steps
ⓘ
filter mostly ahead of humanity ⓘ filter mostly behind humanity ⓘ |
| ifAheadHumanityImplies | Humanity faces high existential risk before becoming interstellar ⓘ |
| ifBehindHumanityImplies | Human civilization is unusually lucky or early ⓘ |
| implies |
Most civilizations never reach long-lived interstellar expansion
ⓘ
The observable universe may contain very few advanced spacefaring civilizations ⓘ |
| influenced |
discussions at the Future of Humanity Institute
ⓘ
effective altruism community thinking about existential risk ⓘ |
| involves |
civilizational self-destruction risks
ⓘ
constraints on interstellar colonization ⓘ improbable evolutionary steps ⓘ |
| lateFilterDefinition | improbable steps or barriers that occur after a civilization becomes technologically capable ⓘ |
| proposedBy | Robin Hanson ⓘ |
| publicationContext | originally discussed in an online essay by Robin Hanson in the 1990s ⓘ |
| relatedTo |
Drake equation
ⓘ
Fermi paradox ⓘ Rare Earth hypothesis ⓘ existential risk ⓘ longtermism ⓘ |
| usedInArgument |
for prioritizing existential risk reduction
ⓘ
for studying low-probability high-impact global catastrophes ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Great Filter Description of subject: The Great Filter is a proposed explanation for the Fermi paradox suggesting that one or more extremely improbable steps in the evolution of life or civilizations drastically limit the number of advanced, spacefaring societies in the universe.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Great Filter
linked to: Great Filter
linked to: Great Filter
linked to: Great Filter
linked to: Great Filter
linked to: Great Filter