Why We Should NOT Look For Aliens - The Dark Forest

Kurzgesagt – In a Nutshell · 17.7M views · 2021 · 10:31

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Cosmology & astrophysicsProbability & game theoryexplainer

Why Hacker News recommends it

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

What it is

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.

Recommended by 0 HN commenters across 0 different months, 2021 to 2026.

What Hacker News said

Cites guerrilla · 2021-12 · on “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]

Cites throw0101a · 2022-02 · on “A Lonely Universe”

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 civi

Cites fhdkweig · 2025-10 · on “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]

Cites throw0101c · 2026-02 · on “The Internet Is Becoming a Dark Forest – and AI Is the Hunter”

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][18