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Why We Should NOT Look For Aliens - The Dark Forest

50 videos recommended on HN
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Cited on HN 4 times, 2021–2026, never outright recommended score 0
Years with an HN recommendation, 2007–2026

HN commenters cite it as the accessible summary of the Dark Forest theory whenever SETI, alien contact, or hostile-environment analogies come up.

Kurzgesagt animated explainer on the Dark Forest answer to the Fermi Paradox. It argues that if advanced civilizations exist, staying silent may be the safest strategy because revealing yourself invites a first strike.

“This video summarizes the details[1]” (HN, 2021)

4 citations · Explainers

4 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@guerrilla Dec 2021 Cites it
on HN thread The timing of evolutionary transitions suggests intelligent life is rare
> I mean really, a priori, if there were loads and loads of intelligent species in our galaxy, wouldn't you expect to see them? Not according to the Dark Forest theory. There are either quiet civilizations or dead civilizations due to realpolitik. This video summarizes the details[1] 1. [this video]
Summarizes the Dark Forest theory
@throw0101a Feb 2022 Cites it
on HN thread A Lonely Universe
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See also The Dark Forest: > The universe is a dark forest. Every civilization is an armed hunter stalking through the trees like a ghost, gently pushing aside branches that block the path and trying to tread without sound. Even breathing is done with care. The hunter has to be careful, because everywhere in the forest are stealthy hunters like him. If he finds other life—another hunter, an angel or a demon, a delicate infant or a tottering old man, a fairy or a demigod—there’s only one thing he can do: open fire and eliminate them. In this forest, hell is other people. An eternal threat that any life that exposes its own existence will be swiftly wiped out. This is the picture of cosmic civilization. It’s the explanation for the Fermi Paradox. * [link] * [link] Kurzgesagt video (12m): * [this video]
Video explanation of Dark Forest
@fhdkweig Oct 2025 Cites it
on HN thread What do we do if SETI is successful?
Kurzgesagt – In a Nutshell posted two videos studying the possible ways a malevolent society can cause problems without even leaving their star system at all. The Dark Forest solution to the Fermi Paradox (the first strike advantage): [this video] How to Win an Interstellar War (without leaving home) [link]
Dark Forest solution to Fermi Paradox
@throw0101c Feb 2026 Cites it
on HN thread The Internet Is Becoming a Dark Forest – and AI Is the Hunter
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For anyone not familiar with the concept of "dark forest": > […] In Liu Cixin's 2008 novel The Dark Forest, the author proposes a literary explanation for the Fermi paradox in which countless alien civilizations exist, but are both silent and paranoid, destroying any nascent lifeforms loud enough to make themselves known.[181] This is because any other intelligent life may represent a future threat. As a result, Liu's fictional universe contains a plethora of quiet civilizations which do not reveal themselves, as in a "dark forest"...filled with "armed hunter(s) stalking through the trees like a ghost".[182][183][184] This idea has come to be known as the dark forest hypothesis.[185][186][187] * [link] > The "dark forest" hypothesis presumes that any space-faring civilization would view any other intelligent life such as theirs as an inevitable threat and thus destroy any nascent life that makes itself known. As a result, the electromagnetic radiation surveys would not find evidence of intelligent alien life.[8][9] […] > The name of the hypothesis derives from Liu Cixin's 2008 novel The Dark Forest,[11] as in a "dark forest" filled with "armed hunter(s) stalking through the trees like ghosts".[12][13] According to the dark forest hypothesis, since the intentions of any newly contacted civilisation can never be known with certainty, then if one is encountered, it is best to make a preemptive strike, in order to avoid the potential extinction of one's own species. The novel pro

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