Dark Forest Theory
A proposed solution to the Fermi Paradox suggesting civilizations hide their existence to avoid destruction, popularized by Cixin Liu.
OVERVIEW
The Dark Forest theory posits that the universe is a dark forest where every civilization is a hunter. Any civilization that reveals its location will be destroyed because: (1) All civilizations want to survive. (2) It's impossible to know if others are friendly. (3) The safest action is to destroy any discovered civilization first. Therefore, the reason we see no ETIs is that everyone is hiding.
KNOWN FACTS
The theory provides a logically consistent solution to the Fermi Paradox
No evidence of ETIs exists, consistent with the theory's predictions
The assumptions are consistent with evolutionary biology
Human history shows contact between civilizations often ends badly
The theory is discussed in academic philosophy and SETI ethics
CLAIMS
The universe is a dark forest where civilizations must hide to survive
Any civilization that broadcasts its existence will be destroyed
The reason we see no ETIs is that they are deliberately hiding
The theory explains both the Fermi Paradox and the lack of UFO evidence
Humanity's radio broadcasts may have already doomed us
EVIDENCE FOR
The theory provides a logically consistent solution to the Fermi Paradox
No evidence of ETIs exists, consistent with the theory's predictions
The assumptions are consistent with evolutionary biology
Human history shows contact between civilizations often ends badly
The theory is discussed in academic philosophy and SETI ethics
EVIDENCE AGAINST
The theory assumes all civilizations share the same survival logic
Cooperation is also an evolutionary strategy
The energy cost of interstellar destruction is enormous
The theory is a work of fiction, not a scientific hypothesis
Advanced civilizations would likely have moved beyond primitive survival instincts
OPEN QUESTIONS
No open questions recorded.
SOURCES
TIMELINE
Cixin Liu publishes 'The Dark Forest'
Theory gains popularity in SETI discussions