Uploaded March 2026 | Updated September 2026, 2 weeks ago
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The Boltzmann brain hypothesis states that, between the Big Bang occurring and a fully-formed brain suddenly popping into existence in space, the brain spontaneously appearing is more probable. In a recent paper, a group of physicists have compared the second law of thermodynamics and the Boltzmann brain hypothesis – after analyzing both, they concluded that both are equally legitimate theories of physics. Let’s take a look at what this means and if they might be right.
Paper: mdpi.com/1099-4300/27/12/1227
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#science #sciencenews #physics #entropy
In this video, I explore a recent paper by physicists, including Carlo Rovelli, who argue that the second law of thermodynamics, a cornerstone of physics, is fundamentally flawed due to its circular reasoning and inherent entropy. This provocative claim not only challenges established theoretical physics but also raises profound questions about our understanding of reality and consciousness. The paper suggests that, from a philosophical perspective, our perceived universe might be an illusion, and we could be mere brains in an otherwise empty cosmos, prompting a critical look at logic and science.
🌏 Get Exclusive NordVPN 2Y deal + 4 months extra here → nordvpn.com/sabine It’s risk-free with Nord’s 30-day money-back guarantee! ✌️
The Boltzmann brain hypothesis states that, between the Big Bang occurring and a fully-formed brain suddenly popping into existence in space, the brain spontaneously appearing is more probable. In a recent paper, a group of physicists have compared the second law of thermodynamics and the Boltzmann brain hypothesis – after analyzing both, they concluded that both are equally legitimate theories of physics. Let’s take a look at what this means and if they might be right.
Paper: mdpi.com/1099-4300/27/12/1227
👕T-shirts, mugs, posters and more: ➜ sabines-store.dashery.com
💌 Support me on Donorbox ➜ donorbox.org/swtg
👉 Transcript with links to references on Patreon ➜ patreon.com/Sabine
📝 Transcripts and written news on Substack ➜ sciencewtg.substack.com
📩 Free weekly science newsletter ➜ sabinehossenfelder.com/newsletter
👂 Audio only podcast ➜ open.spotify.com/show/0MkNfXlKnMPEUMEeKQYmYC
🔗 Join this channel to get access to perks ➜
youtube.com/channel/UC1yNl2E66ZzKApQdRuTQ4tw/join
📚 Buy my book ➜ amzn.to/3HSAWJW
#science #sciencenews #physics #entropy
In this video, I explore a recent paper by physicists, including Carlo Rovelli, who argue that the second law of thermodynamics, a cornerstone of physics, is fundamentally flawed due to its circular reasoning and inherent entropy. This provocative claim not only challenges established theoretical physics but also raises profound questions about our understanding of reality and consciousness. The paper suggests that, from a philosophical perspective, our perceived universe might be an illusion, and we could be mere brains in an otherwise empty cosmos, prompting a critical look at logic and science.
