Joe Rogan Experience #2554 - Carlo Rovelli

What happened in this episode?

Physicist and author Carlo Rovelli joins Joe Rogan for a wide-ranging discussion spanning quantum mechanics, relativity, consciousness, AI and geopolitics. Rovelli sets out his relational view of reality, arguing that physics—especially quantum mechanics—undermines the idea of a single, fully objective description of things independent of interactions. He uses the double-slit experiment and measurement as examples of why “where is the particle?” can be a badly posed question without specifying interactions.

On relativity, Rovelli gives an accessible demonstration of gravitational time dilation: sufficiently precise clocks will desynchronise even when separated by only inches of height, and the effect becomes extreme near massive objects such as black holes. He discusses black holes’ scientific acceptance and recalls that a senior particle physicist still doubted their physical reality in 2000, contrasting that with today’s imaging and multi-messenger evidence.

The conversation turns to consciousness and AI. Rovelli argues “consciousness” is often a rebranding of “soul”, and rejects a strict mind–body split; he also says there is no principled reason an artificial system could not, in future, have human-like experience, while emphasising present-day AI systems differ profoundly from humans.

On world affairs, Rovelli voices alarm about military-driven AI development and nuclear escalation risks, and argues the US faces a strategic choice between preserving dominance and building collaborative international arrangements. Rogan and Rovelli also debate whether war is deeply rooted in human evolution or largely a product of recent agricultural societies.

What are the key points?

• Rovelli argues quantum mechanics supports a relational, interaction-based account of physical properties.
• He says precise clocks measurably diverge with small altitude differences due to gravitational time dilation.
• Rovelli outlines competing ‘before the Big Bang’ possibilities and says he would currently bet on a bounce scenario.
• He recalls that in 2000 a senior physicist told him he did not believe black holes were real.
• Rovelli says there is no obvious a priori barrier to conscious artificial systems, while stressing current AI is unlike humans.
• He warns that military incentives for AI development could increase nuclear escalation risks.

Who is speaking?

Named speakers identified in Egleze's source-linked moments from this episode.

• Carlo Rovelli

Which topics are covered?

How is this page sourced?

Programme

Joe Rogan Experience

Published

15 September 2026

Duration

2h 32m

Original episode

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