AI Doomer
Noun · Hacker Culture
Definitions
A person who believes that advanced artificial intelligence poses a severe existential or civilizational risk — ranging from catastrophic misalignment to human extinction — and typically advocates for aggressive regulation, compute governance, or outright development moratoriums. Associated with thinkers like Eliezer Yudkowsky and the rationalist/effective altruism communities.
In plain English: Someone who believes powerful AI could be extremely dangerous or even end civilization, and thinks we should slow down or stop building it.
Example: "He went full AI doomer after reading Superintelligence and now insists we need to air-gap every GPU cluster."