80,000 Hours Podcast

#143 Classic episode – Jeffrey Lewis on the most common misconceptions about nuclear weapons

Feb 19, 2025
Jeffrey Lewis, an expert on nuclear weapons and founder of Arms Control Wonk, debunks common misconceptions about U.S. nuclear policy. He reveals that the principle of 'mutually assured destruction' was misinterpreted and critiques how military plans suggest the U.S. aims to dominate in nuclear conflicts. Lewis also discusses the complexities of decision-making in nuclear strategy and the persistent misunderstandings stemming from rigid communication within the nuclear community, emphasizing the need for international cooperation to mitigate existential threats.
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INSIGHT

Outdated Targeting Distinctions

  • Counterforce vs. countervalue targeting is an outdated distinction in nuclear strategy.
  • The US targets what enemies value, including infrastructure, leadership, and war-sustaining industries.
ANECDOTE

Too Much Lin Biao

  • Mort Halperin repeatedly removed details about Lin Biao from a speech, but was told there was still too much.
  • This highlights a decision-making flaw where only what remains is considered, not what's removed.
INSIGHT

MAD is a Myth

  • Mutually Assured Destruction (MAD) was never official US policy, but a term used to criticize arms control advocates.
  • While presidents may privately reject MAD, official plans still emphasize prevailing in nuclear war.
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